This page gives the schema (or data model) for the GALAH DR3 main and value-added catalogues.

We strongly recommend reading the recommended columns section of our Best Practices page. This discusses how some parameters have different values in GALAH DR3 from different methods (e.g., for effective temperature there is teff, irfm_teff, init_teff, teff_guess; in this case we recommend teff.).

The sobject_id column should be used for joining the catalogues.

GALAH_DR3_main_allstar_v2 and GALAH_DR3_main_allspec_v2

Unless otherwise noted, all columns are found in both GALAH_DR3_main_allstar_v2 and GALAH_DR3_main_allspec_v2. To save space in the table below, the columns related to abundances have been collapsed in single entries (e.g., X_fe), and they are all listed in a table at the bottom of this page.

Column name Description units type
sobject_id GALAH identifier   integer
star_id 2MASS identifier   string
dr2_source_id Gaia DR2 source_id   integer
dr3_source_id Gaia DR3 source_id   integer
survey_name Name of survey as part of GALAH+DR3   string
field_id GALAH field identifer   integer
flag_repeat Repeat observation flag, indicating if used for clean catalog   integer
wg4_field GALAH WG4 field   string
wg4_pipeline SME pipeline version free/lbol/seis   string
flag_sp Stellar parameter quality flag   integer
teff Spectroscopic effective temperature (used for fitting) K float
e_teff Uncertainty teff K float
irfm_teff IRFM temperature (not used for synthesis) K float
irfm_ebv E(B-V) used for IRFM teff estimation mag float
irfm_ebv_ref Reference irfm_ebv   string
cov_e_teff SME covariance fitting uncertainty teff. Only in main_allspec. K float
init_teff SME initial teff. Only in main_allspec. K float
logg Surface gravity (not fitted via spectra if wg4_pipeline not free) log(cm s-2) float
e_logg Uncertainty logg log(cm s-2) float
cov_e_logg MonteCarlo uncertainty logg. Only in main_allspec. log(cm s-2) float
init_logg SME initial logg. Only in main_allspec. log(cm s-2) float
fe_h Fe atomic abundance from Fe lines (final, 1D-NLTE)   float
e_fe_h Uncertainty fe_h   float
cov_e_fe_h SME covariance fitting uncertainty fe_h. Only in main_allspec.   float
flag_fe_h Quality flag fe_h   integer
fe_h_atmo sme.feh from stellar parameter run, fitted from H, Ti, Sc, Fe   float
e_fe_h_atmo Uncertainty fe_h_atmo. Only in main_allspec.   float
cov_e_fe_h_atmo SME covariance fitting uncertainty sme.feh. Only in main_allspec.   float
init_fe_h_atmo SME initial sme.feh. Only in main_allspec.   float
vmic Microturbulence velocity (from empirical relation) km s-1 float
vbroad Broadening velocity (fitted sme.vsini with sme.vmac=0) km s-1 float
e_vbroad Uncertainty of vbroad km s-1 float
cov_e_vbroad SME covariance fitting uncertainty sme.vsini. Only in main_allspec. km s-1 float
init_vbroad SME initial broadening velocity. Only in main_allspec. km s-1 float
mass Stellar parameter fitting product of stellar mass. Only in main_allspec. M☉ float
lbol Stellar parameter fitting product of bolometric luminosity. Only in main_allspec. L☉ float
age Stellar parameter fitting product of stellar age. Only in main_allspec. Gyr float
chi2_sp χ² value of stellar parameter fitting   float
alpha_fe Combined, weighted α-process element abundance   float
e_alpha_fe Uncertainty of alpha_fe   float
nr_alpha_fe Bitmask of used measurements for alpha_fe   float
flag_alpha_fe Quality flag of measurements for alpha_fe   integer
flux_A_Fe Normalised maximum absorption strength of in iron lines   float
chi_A_Fe χ² value of iron abundance fitting   float
ind_X1234_fe Individual uncalibrated measurmenet of line/combo X1234. Only in main_allspec.   float
ind_cov_e_X1234 SME covariance fitting uncertainty ind_X1234_fe. Only in main_allspec.   float
ind_flag_X1234 Quality flag fit for ind_X1234_fe. Only in main_allspec.   integer
X_fe Neutral/ionised X atomic abundance (final, 1D-LTE or NLTE)   float
e_X_fe Uncertainty X_fe   float
nr_X_fe Bitmask of used X ind lines   integer
flag_X_fe Quality flag of X_fe   integer
ra_dr2 Right Ascension propagated from Gaia DR2. Original name ra. deg float
dec_dr2 Declination propagated from Gaia DR2. Original name dec. deg float
parallax_dr2 Parallax propagated from Gaia DR2. Original name parallax. mas float
parallax_error_dr2 Parallax error propagated from Gaia DR2. Original name parallax_error. mas float
r_est_dr2 Estimated distance propagated from Bailer-Jones et al. (2018). Original name r_est. pc float
r_lo_dr2 Lower bound on the confidence interval of the estimated distance propagated from Bailer-Jones et al. (2018). Original name r_lo. pc float
r_hi_dr2 Upper bound on the confidence interval of the estimated distance propagated from Bailer-Jones et al. (2018). Original name r_hi. pc float
r_len_dr2 Length scale used in the prior for the distance estimation propagated from Bailer-Jones et al. (2018). Original name r_len. pc float
rv_galah Best-method radial velocity from GALAH spectra km s-1 float
e_rv_galah Uncertainty of rv_galah km s-1 float
rv_gaia_dr2 Radial velocity propagated from Gaia DR2; identical to dr2_radial_velocity km s-1 float
e_rv_gaia_dr2 Radial velocity error propagated from Gaia DR2; identical to dr2_radial_velocity_error km s-1 float
red_flag Reduction pipeline quality flag   integer
ebv Schlegel et al. (1998) extinction value mag float
snr_c1_iraf Average SNR/px CCD1   float
snr_c2_iraf Average SNR/px CCD2   float
snr_c3_iraf Average SNR/px CCD3   float
snr_c4_iraf Average SNR/px CCD4   float
flag_guess GUESS reduction pipeline quality flag   integer
rv_guess Reduction pipeline best radial velocity. Only in main_allspec. km s-1 float
e_rv_guess Reduction pipeline uncertainty radial velocity. Only in main_allspec. km s-1 float
teff_guess Reduction pipeline best Teff. Only in main_allspec. K float
logg_guess Reduction pipeline best logg. Only in main_allspec. log(cm s-2) float
feh_guess Reduction pipeline best [Fe/H]. Only in main_allspec.   float
rv_5854 Local best fit to RV when fitting A(Ba5854). Only in main_allspec. km s-1 float
rv_6708 Local best fit to RV when fitting A(Li6708). Only in main_allspec. km s-1 float
rv_6722 Local best fit to RV when fitting A(Si6722). Only in main_allspec. km s-1 float
v_jk V magnitude estimated from 2MASS J and Ks mag mag float
j_m J magnitude propagated from 2MASS mag float
j_msigcom J magnitude uncertainty propagated from 2MASS mag float
h_m Band H magnitude propagated from 2MASS mag float
h_msigcom H magnitude uncertainty propagated from 2MASS mag float
ks_m Band Ks magnitude propagated from 2MASS mag float
ks_msigcom Ks magnitude uncertainty magnitude propagated from 2MASS mag float
ph_qual_tmass JHKs Photometric quality flag propagated from 2MASS. Renamed from ph_qual in original catalogue.   string
w2mpro W2 profile-fitting magnitude propagated from AllWISE mag float
w2mpro_error Error on W2 profile-fitting magnitude propagated from AllWISE mag float
ph_qual_wise Photometric quality flag propagated from AllWISE. Renamed from ph_qual in original catalogue.   string
a_ks Used Ks band extinction mag float
e_a_ks Uncertainty of a_ks mag float
bc_ks Used Bolometric Correction for Ks band mag float
ruwe_dr2 Renormalised unit weight error propagated from Gaia DR2. Renamed from ruwe in original catalogue.   float

Abundance columns

To save space in the table above, the columns related to abundances are collated in single entries (e.g., X_fe). Below we list all of the abundance-related columns.

Placeholder column name All possible column names
X_fe

Neutral/ionised X atomic abundance (final, 1D-LTE or NLTE)		 Li_fe C_fe O_fe Na_fe Mg_fe Al_fe Si_fe K_fe Ca_fe Sc_fe Sc2_fe Ti_fe Ti2_fe V_fe Cr_fe Cr2_fe Mn_fe Co_fe Ni_fe Cu_fe Zn_fe Rb_fe Sr_fe Y_fe Zr_fe Mo_fe Ru_fe Ba_fe La_fe Ce_fe Nd_fe Sm_fe Eu_fe Li_fe C_fe O_fe Na_fe Mg_fe Al_fe Si_fe K_fe Ca_fe Sc_fe Sc2_fe Ti_fe Ti2_fe V_fe Cr_fe Cr2_fe Mn_fe Co_fe Ni_fe Cu_fe Zn_fe Rb_fe Sr_fe Y_fe Zr_fe Mo_fe Ru_fe Ba_fe La_fe Ce_fe Nd_fe Sm_fe Eu_fe
e_X_fe

Uncertainty X_fe		 e_Li_fe e_C_fe e_O_fe e_Na_fe e_Mg_fe e_Al_fe e_Si_fe e_K_fe e_Ca_fe e_Sc_fe e_Sc2_fe e_Ti_fe e_Ti2_fe e_V_fe e_Cr_fe e_Cr2_fe e_Mn_fe e_Co_fe e_Ni_fe e_Cu_fe e_Zn_fe e_Rb_fe e_Sr_fe e_Y_fe e_Zr_fe e_Mo_fe e_Ru_fe e_Ba_fe e_La_fe e_Ce_fe e_Nd_fe e_Sm_fe e_Eu_fe e_Li_fe e_C_fe e_O_fe e_Na_fe e_Mg_fe e_Al_fe e_Si_fe e_K_fe e_Ca_fe e_Sc_fe e_Sc2_fe e_Ti_fe e_Ti2_fe e_V_fe e_Cr_fe e_Cr2_fe e_Mn_fe e_Co_fe e_Ni_fe e_Cu_fe e_Zn_fe e_Rb_fe e_Sr_fe e_Y_fe e_Zr_fe e_Mo_fe e_Ru_fe e_Ba_fe e_La_fe e_Ce_fe e_Nd_fe e_Sm_fe e_Eu_fe
nr_X_fe

Bitmask of used X ind lines		 nr_Li_fe nr_C_fe nr_O_fe nr_Na_fe nr_Mg_fe nr_Al_fe nr_Si_fe nr_K_fe nr_Ca_fe nr_Sc_fe nr_Sc2_fe nr_Ti_fe nr_Ti2_fe nr_V_fe nr_Cr_fe nr_Cr2_fe nr_Mn_fe nr_Co_fe nr_Ni_fe nr_Cu_fe nr_Zn_fe nr_Rb_fe nr_Sr_fe nr_Y_fe nr_Zr_fe nr_Mo_fe nr_Ru_fe nr_Ba_fe nr_La_fe nr_Ce_fe nr_Nd_fe nr_Sm_fe nr_Eu_fe nr_Li_fe nr_C_fe nr_O_fe nr_Na_fe nr_Mg_fe nr_Al_fe nr_Si_fe nr_K_fe nr_Ca_fe nr_Sc_fe nr_Sc2_fe nr_Ti_fe nr_Ti2_fe nr_V_fe nr_Cr_fe nr_Cr2_fe nr_Mn_fe nr_Co_fe nr_Ni_fe nr_Cu_fe nr_Zn_fe nr_Rb_fe nr_Sr_fe nr_Y_fe nr_Zr_fe nr_Mo_fe nr_Ru_fe nr_Ba_fe nr_La_fe nr_Ce_fe nr_Nd_fe nr_Sm_fe nr_Eu_fe
flag_X_fe

Quality flag of X_fe		 flag_Li_fe flag_C_fe flag_O_fe flag_Na_fe flag_Mg_fe flag_Al_fe flag_Si_fe flag_K_fe flag_Ca_fe flag_Sc_fe flag_Sc2_fe flag_Ti_fe flag_Ti2_fe flag_V_fe flag_Cr_fe flag_Cr2_fe flag_Mn_fe flag_Co_fe flag_Ni_fe flag_Cu_fe flag_Zn_fe flag_Rb_fe flag_Sr_fe flag_Y_fe flag_Zr_fe flag_Mo_fe flag_Ru_fe flag_Ba_fe flag_La_fe flag_Ce_fe flag_Nd_fe flag_Sm_fe flag_Eu_fe flag_Li_fe flag_C_fe flag_O_fe flag_Na_fe flag_Mg_fe flag_Al_fe flag_Si_fe flag_K_fe flag_Ca_fe flag_Sc_fe flag_Sc2_fe flag_Ti_fe flag_Ti2_fe flag_V_fe flag_Cr_fe flag_Cr2_fe flag_Mn_fe flag_Co_fe flag_Ni_fe flag_Cu_fe flag_Zn_fe flag_Rb_fe flag_Sr_fe flag_Y_fe flag_Zr_fe flag_Mo_fe flag_Ru_fe flag_Ba_fe flag_La_fe flag_Ce_fe flag_Nd_fe flag_Sm_fe flag_Eu_fe
ind_X1234_fe

Individual uncalibrated measurmenet of line/combo X1234		 ind_Li6708_fe ind_Li6708_NoRV_fe ind_C6588_fe ind_O_fe ind_Na_fe ind_Mg5711_fe ind_Al_fe ind_Si_fe ind_K7699_fe ind_Ca_fe ind_Sc_fe ind_Ti4758_fe ind_Ti4759_fe ind_Ti4778_fe ind_Ti4782_fe ind_Ti4798_fe ind_Ti4802_fe ind_Ti4820_fe ind_Ti5689_fe ind_Ti5716_fe ind_Ti5720_fe ind_Ti5739_fe ind_Ti5866_fe ind_Ti6599_fe ind_Ti6717_fe ind_Ti7853_fe ind_Ti4720_fe ind_Ti4765_fe ind_Ti4799_fe ind_Ti4849_fe ind_Ti4866_fe ind_Ti4874_fe ind_V4832_fe ind_V4784_fe ind_V4797_fe ind_Cr_fe ind_Mn_fe ind_Co4781_fe ind_Co4900_fe ind_Co5647_fe ind_Co6490_fe ind_Co6551_fe ind_Co6632_fe ind_Co6679_fe ind_Co7713_fe ind_Co7838_fe ind_Ni5847_fe ind_Ni6586_fe ind_Cu5700_fe ind_Cu5782_fe ind_Zn4722_fe ind_Zn4811_fe ind_Rb7800_fe ind_Sr6550_fe ind_Y_fe ind_Y4820_fe ind_Y4855_fe ind_Y4884_fe ind_Y5663_fe ind_Y5729_fe ind_Zr4739_fe ind_Zr4772_fe ind_Zr4806_fe ind_Zr4828_fe ind_Zr5681_fe ind_Mo5689_fe ind_Mo5751_fe ind_Mo5858_fe ind_Mo6619_fe ind_Ru4758_fe ind_Ru4869_fe ind_Ru5699_fe ind_Ba_fe ind_La4716_fe ind_La4749_fe ind_La4804_fe ind_La5806_fe ind_Ce4774_fe ind_Nd4811_fe ind_Nd5741_fe ind_Nd5770_fe ind_Nd5812_fe ind_Nd5842_fe ind_Sm4720_fe ind_Sm4792_fe ind_Sm4837_fe ind_Sm4848_fe ind_Sm4854_fe ind_Eu5819_fe ind_Eu6645_fe
ind_cov_e_X1234

SME covariance fitting uncertainty of ind_X1234_fe		 ind_cov_e_Li6708 ind_cov_e_Li6708_NoRV ind_cov_e_C6588 ind_cov_e_O ind_cov_e_Na ind_cov_e_Mg5711 ind_cov_e_Al ind_cov_e_Si ind_cov_e_K7699 ind_cov_e_Ca ind_cov_e_Sc ind_cov_e_Ti4758 ind_cov_e_Ti4759 ind_cov_e_Ti4778 ind_cov_e_Ti4782 ind_cov_e_Ti4798 ind_cov_e_Ti4802 ind_cov_e_Ti4820 ind_cov_e_Ti5689 ind_cov_e_Ti5716 ind_cov_e_Ti5720 ind_cov_e_Ti5739 ind_cov_e_Ti5866 ind_cov_e_Ti6599 ind_cov_e_Ti6717 ind_cov_e_Ti7853 ind_cov_e_Ti4720 ind_cov_e_Ti4765 ind_cov_e_Ti4799 ind_cov_e_Ti4849 ind_cov_e_Ti4866 ind_cov_e_Ti4874 ind_cov_e_V4832 ind_cov_e_V4784 ind_cov_e_V4797 ind_cov_e_Cr ind_cov_e_Mn ind_cov_e_Co4781 ind_cov_e_Co4900 ind_cov_e_Co5647 ind_cov_e_Co6490 ind_cov_e_Co6551 ind_cov_e_Co6632 ind_cov_e_Co6679 ind_cov_e_Co7713 ind_cov_e_Co7838 ind_cov_e_Ni5847 ind_cov_e_Ni6586 ind_cov_e_Cu5700 ind_cov_e_Cu5782 ind_cov_e_Zn4722 ind_cov_e_Zn4811 ind_cov_e_Rb7800 ind_cov_e_Sr6550 ind_cov_e_Y ind_cov_e_Y4820 ind_cov_e_Y4855 ind_cov_e_Y4884 ind_cov_e_Y5663 ind_cov_e_Y5729 ind_cov_e_Zr4739 ind_cov_e_Zr4772 ind_cov_e_Zr4806 ind_cov_e_Zr4828 ind_cov_e_Zr5681 ind_cov_e_Mo5689 ind_cov_e_Mo5751 ind_cov_e_Mo5858 ind_cov_e_Mo6619 ind_cov_e_Ru4758 ind_cov_e_Ru4869 ind_cov_e_Ru5699 ind_cov_e_Ba ind_cov_e_La4716 ind_cov_e_La4749 ind_cov_e_La4804 ind_cov_e_La5806 ind_cov_e_Ce4774 ind_cov_e_Nd4811 ind_cov_e_Nd5741 ind_cov_e_Nd5770 ind_cov_e_Nd5812 ind_cov_e_Nd5842 ind_cov_e_Sm4720 ind_cov_e_Sm4792 ind_cov_e_Sm4837 ind_cov_e_Sm4848 ind_cov_e_Sm4854 ind_cov_e_Eu5819 ind_cov_e_Eu6645
ind_flag_X1234

Quality flag fit for ind_X1234_fe		 ind_flag_Li6708 ind_flag_Li6708_NoRV ind_flag_C6588 ind_flag_O ind_flag_Na ind_flag_Mg5711 ind_flag_Al ind_flag_Si ind_flag_K7699 ind_flag_Ca ind_flag_Sc ind_flag_Ti4758 ind_flag_Ti4759 ind_flag_Ti4778 ind_flag_Ti4782 ind_flag_Ti4798 ind_flag_Ti4802 ind_flag_Ti4820 ind_flag_Ti5689 ind_flag_Ti5716 ind_flag_Ti5720 ind_flag_Ti5739 ind_flag_Ti5866 ind_flag_Ti6599 ind_flag_Ti6717 ind_flag_Ti7853 ind_flag_Ti4720 ind_flag_Ti4765 ind_flag_Ti4799 ind_flag_Ti4849 ind_flag_Ti4866 ind_flag_Ti4874 ind_flag_V4832 ind_flag_V4784 ind_flag_V4797 ind_flag_Cr ind_flag_Mn ind_flag_Co4781 ind_flag_Co4900 ind_flag_Co5647 ind_flag_Co6490 ind_flag_Co6551 ind_flag_Co6632 ind_flag_Co6679 ind_flag_Co7713 ind_flag_Co7838 ind_flag_Ni5847 ind_flag_Ni6586 ind_flag_Cu5700 ind_flag_Cu5782 ind_flag_Zn4722 ind_flag_Zn4811 ind_flag_Rb7800 ind_flag_Sr6550 ind_flag_Y ind_flag_Y4820 ind_flag_Y4855 ind_flag_Y4884 ind_flag_Y5663 ind_flag_Y5729 ind_flag_Zr4739 ind_flag_Zr4772 ind_flag_Zr4806 ind_flag_Zr4828 ind_flag_Zr5681 ind_flag_Mo5689 ind_flag_Mo5751 ind_flag_Mo5858 ind_flag_Mo6619 ind_flag_Ru4758 ind_flag_Ru4869 ind_flag_Ru5699 ind_flag_Ba ind_flag_La4716 ind_flag_La4749 ind_flag_La4804 ind_flag_La5806 ind_flag_Ce4774 ind_flag_Nd4811 ind_flag_Nd5741 ind_flag_Nd5770 ind_flag_Nd5812 ind_flag_Nd5842 ind_flag_Sm4720 ind_flag_Sm4792 ind_flag_Sm4837 ind_flag_Sm4848 ind_flag_Sm4854 ind_flag_Eu5819 ind_flag_Eu6645

VAC_ages

Column name Description units type
sobject_id GALAH identifier   integer
age_bstep Age estimate BSTEP-Mod. Gyr float
e_age_bstep 1-sigma uncertainty of age_bstep Gyr float
e16_age_bstep 16 percentile value for age_bstep Gyr float
e50_age_bstep 50 percentile value for age_bstep Gyr float
e84_age_bstep 84 percentile value for age_bstep Gyr float
m_act_bstep Actual stellar mass after mass loss BSTEP-Mod. M☉ float
e_m_act_bstep 1-sigma uncertainty of m_act_bstep M☉ float
e16_m_act_bstep 16 percentile value for m_act_bstep M☉ float
e50_m_act_bstep 50 percentile value for m_act_bstep M☉ float
e84_m_act_bstep 84 percentile value for m_act_bstep M☉ float
m_ini_bstep Initial stellar mass BSTEP-Mod. M☉ float
e_m_ini_bstep 1-sigma uncertainty of m_ini_bstep M☉ float
e16_m_ini_bstep 16 percentile value for m_ini_bstep M☉ float
e50_m_ini_bstep 50 percentile value for m_ini_bstep M☉ float
e84_m_ini_bstep 84 percentile value for m_ini_bstep M☉ float
radius_bstep Stellar Radius BSTEP-Mod. R☉ float
e_radius_bstep 1-sigma uncertainty of radius_bstep R☉ float
e16_radius_bstep 16 percentile value for radius_bstep R☉ float
e50_radius_bstep 50 percentile value for radius_bstep R☉ float
e84_radius_bstep 84 percentile value for radius_bstep R☉ float
is_redclump_bstep Probability to be a red clump star (1.0) or not (0.0) BSTEP-Mod.   float
e_is_redclump_bstep 1-sigma uncertainty of is_redclump_bstep   float
e16_is_redclump_bstep 16 percentile value for is_redclump_bstep   float
e50_is_redclump_bstep 50 percentile value for is_redclump_bstep   float
e84_is_redclump_bstep 84 percentile value for is_redclump_bstep   float
distance_bstep Distance BSTEP-Mod. kpc float
e_distance_bstep 1-sigma uncertainty of distance_bstep kpc float
e16_distance_bstep 16 percentile value for distance_bstep kpc float
e50_distance_bstep 50 percentile value for distance_bstep kpc float
e84_distance_bstep 84 percentile value for distance_bstep kpc float
ebv_bstep Extinction E(B-V) BSTEP-Mod. mag float
e_ebv_bstep 1-sigma uncertainty of ebv_bstep mag float
e16_ebv_bstep 16 percentile value for ebv_bstep mag float
e50_ebv_bstep 50 percentile value for ebv_bstep mag float
e84_ebv_bstep 84 percentile value for ebv_bstep mag float
teff_bstep Effective Temperature BSTEP-Mod. K float
e_teff_bstep 1-sigma uncertainty of teff_bstep K float
e16_teff_bstep 16 percentile value for teff_bstep K float
e50_teff_bstep 50 percentile value for teff_bstep K float
e84_teff_bstep 84 percentile value for teff_bstep K float
logg_bstep Surface gravity BSTEP-Mod. log(cm s-2) float
e_logg_bstep 1-sigma uncertainty of logg_bstep log(cm s-2) float
e16_logg_bstep 16 percentile value for logg_bstep log(cm s-2) float
e50_logg_bstep 50 percentile value for logg_bstep log(cm s-2) float
e84_logg_bstep 84 percentile value for logg_bstep log(cm s-2) float
meh_act_bstep Surface effective [M/H] BSTEP-Mod.   float
e_meh_act_bstep 1-sigma uncertainty of meh_act_bstep   float
e16_meh_act_bstep 16 percentile value for meh_act_bstep   float
e50_meh_act_bstep 50 percentile value for meh_act_bstep   float
e84_meh_act_bstep 84 percentile value for meh_act_bstep   float
meh_ini_bstep Intial effective metallicity [M/H] from isochrones BSTEP-Mod.   float
e_meh_ini_bstep 1-sigma uncertainty of meh_ini_bstep   float
e16_meh_ini_bstep 16 percentile value for meh_ini_bstep   float
e50_meh_ini_bstep 50 percentile value for meh_ini_bstep   float
e84_meh_ini_bstep 84 percentile value for meh_ini_bstep   float
log_lum_bstep log(Luminosity L/LSun)   float
e_log_lum_bstep 1-sigma uncertainty of log_lum_bstep   float
e16_log_lum_bstep 16 percentile value for log_lum_bstep   float
e50_log_lum_bstep 50 percentile value for log_lum_bstep   float
e84_log_lum_bstep 84 percentile value for log_lum_bstep   float
abs_j_bstep Absolute Magnitude 2MASS J mag float
e_abs_j_bstep 1-sigma uncertainty of abs_j_bstep mag float
e16_abs_j_bstep 16 percentile value for abs_j_bstep mag float
e50_abs_j_bstep 50 percentile value for abs_j_bstep mag float
e84_abs_j_bstep 84 percentile value for abs_j_bstep mag float
abs_ks_bstep Absolute Magnitude 2MASS Ks mag float
e_abs_ks_bstep 1-sigma uncertainty of abs_ks_bstep mag float
e16_abs_ks_bstep 16 percentile value for abs_ks_bstep mag float
e50_abs_ks_bstep 50 percentile value for abs_ks_bstep mag float
e84_abs_ks_bstep 84 percentile value for abs_ks_bstep mag float

VAC_dynamics

Column name Description units type  
sobject_id GALAH identifier   integer
use_dist_flag Distance value was used in the Galactic orbit calculations: 0: distance_bstep; 1: r_med_photogeo; 2: r_med_geo; 4: parallax; 8: No distance.   integer
use_rv_flag Radial velocity value has been used for rv_galah: rv_obst (0), rv_sme_v2 (1), Gaia DR2 (2) or n.a. (4)   integer
X_XYZ Best-value heliocentric Galactic rectangular x-coordinate kpc float
Y_XYZ Best-value heliocentric Galactic rectangular y-coordinate kpc float
Z_XYZ Best-value heliocentric Galactic rectangular z-coordinate kpc float
U_UVW Best-value heliocentric Galactic rectangular x-velocity km s-1 float
V_UVW Best-value heliocentric Galactic rectangular y-velocity km s-1 float
W_UVW Best-value heliocentric Galactic rectangular z-velocity km s-1 float
R_Rzphi Best-value Galactocentric Radius kpc float
phi_Rzphi Best-value Galactocentric azimuth rad float
z_Rzphi Best-value Galactocentric height kpc float
vR_Rzphi Best-value Galactocentric radial velocity km s-1 float
vT_Rzphi Best-value Galactocentric tangential velocity km s-1 float
vz_Rzphi Best-value Galactocentric vertical velocity km s-1 float
J_R Best-value radial action km kpc s-1 float
L_Z Best-value azimuthal action / angular momentum km kpc s-1 float
J_Z Best-value vertical action km kpc s-1 float
omega_R Best-value radial orbit frequency Gyr-1 float
omega_phi Best-value azimuthal orbit frequency Gyr-1 float
omega_z Best-value vertical orbit frequency Gyr-1 float
angle_R Best-value radial orbit angle rad float
angle_phi Best-value azimuthal orbit angle rad float
angle_z Best-value vertical orbit angle rad float
ecc Best-value orbit eccentricity   float
zmax Best-value maximum Galactocentric height kpc float
R_peri Best-value Galactocentric pericenter radius kpc float
R_ap Best-value Galactocentric apocenter radius kpc float
Energy Best-value orbit energy km-2 s-2 float
X_XYZ_5 5th Percentile MC heliocentric Galactic rectangular x-coordinate (X_XYZ) kpc float
X_XYZ_50 50th Percentile MC heliocentric Galactic rectangular x-coordinate (X_XYZ) kpc float
X_XYZ_95 95th Percentile MC heliocentric Galactic rectangular x-coordinate (X_XYZ) kpc float
Y_XYZ_5 5th Percentile MC heliocentric Galactic rectangular y-coordinate (Y_XYZ) kpc float
Y_XYZ_50 50th Percentile MC heliocentric Galactic rectangular y-coordinate (Y_XYZ) kpc float
Y_XYZ_95 95th Percentile MC heliocentric Galactic rectangular y-coordinate (Y_XYZ) kpc float
Z_XYZ_5 5th Percentile MC heliocentric Galactic rectangular z-coordinate (Z_XYZ) kpc float
Z_XYZ_50 50th Percentile MC heliocentric Galactic rectangular z-coordinate (Z_XYZ) kpc float
Z_XYZ_95 95th Percentile MC heliocentric Galactic rectangular z-coordinate (Z_XYZ) kpc float
U_UVW_5 5th Percentile MC heliocentric Galactic rectangular x-velocity (U_UVW) km s-1 float
U_UVW_50 50th Percentile MC heliocentric Galactic rectangular x-velocity (U_UVW) km s-1 float
U_UVW_95 95th Percentile MC heliocentric Galactic rectangular x-velocity (U_UVW) km s-1 float
V_UVW_5 5th Percentile MC heliocentric Galactic rectangular y-velocity (V_UVW) km s-1 float
V_UVW_50 50th Percentile MC heliocentric Galactic rectangular y-velocity (V_UVW) km s-1 float
V_UVW_95 95th Percentile MC heliocentric Galactic rectangular y-velocity (V_UVW) km s-1 float
W_UVW_5 5th Percentile MC heliocentric Galactic rectangular z-velocity (W_UVW) km s-1 float
W_UVW_50 50th Percentile MC heliocentric Galactic rectangular z-velocity (W_UVW) km s-1 float
W_UVW_95 95th Percentile MC heliocentric Galactic rectangular z-velocity (W_UVW) km s-1 float
R_Rzphi_5 5th Percentile MC Galactocentric Radius (R_Rzphi) kpc float
R_Rzphi_50 50th Percentile MC Galactocentric Radius (R_Rzphi) kpc float
R_Rzphi_95 95th Percentile MC Galactocentric Radius (R_Rzphi) kpc float
phi_Rzphi_5 5th Percentile MC Galactocentric azimuth (phi_Rzphi) rad float
phi_Rzphi_50 50th Percentile MC Galactocentric azimuth (phi_Rzphi) rad float
phi_Rzphi_95 95th Percentile MC Galactocentric azimuth (phi_Rzphi) rad float
z_Rzphi_5 5th Percentile MC Galactocentric height (z_Rzphi) kpc float
z_Rzphi_50 50th Percentile MC Galactocentric height (z_Rzphi) kpc float
z_Rzphi_95 95th Percentile MC Galactocentric height (z_Rzphi) kpc float
vR_Rzphi_5 5th Percentile MC Galactocentric radial velocity (vR_Rzphi) km s-1 float
vR_Rzphi_50 50th Percentile MC Galactocentric radial velocity (vR_Rzphi) km s-1 float
vR_Rzphi_95 95th Percentile MC Galactocentric radial velocity (vR_Rzphi) km s-1 float
vT_Rzphi_5 5th Percentile MC Galactocentric tangential velocity (vT_Rzphi) km s-1 float
vT_Rzphi_50 50th Percentile MC Galactocentric tangential velocity (vT_Rzphi) km s-1 float
vT_Rzphi_95 95th Percentile MC Galactocentric tangential velocity (vT_Rzphi) km s-1 float
vz_Rzphi_5 5th Percentile MC Galactocentric vertical velocity (vz_Rzphi) km s-1 float
vz_Rzphi_50 50th Percentile MC Galactocentric vertical velocity (vz_Rzphi) km s-1 float
vz_Rzphi_95 95th Percentile MC Galactocentric vertical velocity (vz_Rzphi) km s-1 float
J_R_5 5th Percentile MC radial action (J_R) km kpc s-1 float
J_R_50 50th Percentile MC radial action (J_R) km kpc s-1 float
J_R_95 95th Percentile MC radial action (J_R) km kpc s-1 float
L_Z_5 5th Percentile MC azimuthal action / angular momentum (L_Z) km kpc s-1 float
L_Z_50 50th Percentile MC azimuthal action / angular momentum (L_Z) km kpc s-1 float
L_Z_95 95th Percentile MC azimuthal action / angular momentum (L_Z) km kpc s-1 float
J_Z_5 5th Percentile MC vertical action (J_Z) km kpc s-1 float
J_Z_50 50th Percentile MC vertical action (J_Z) km kpc s-1 float
J_Z_95 95th Percentile MC vertical action (J_Z) km kpc s-1 float
omega_R_5 5th Percentile MC radial orbit frequency (omega_R) Gyr-1 float
omega_R_50 50th Percentile MC radial orbit frequency (omega_R) Gyr-1 float
omega_R_95 95th Percentile MC radial orbit frequency (omega_R) Gyr-1 float
omega_phi_5 5th Percentile MC azimuthal orbit frequency (omega_phi) Gyr-1 float
omega_phi_50 50th Percentile MC azimuthal orbit frequency (omega_phi) Gyr-1 float
omega_phi_95 95th Percentile MC azimuthal orbit frequency (omega_phi) Gyr-1 float
omega_z_5 5th Percentile MC vertical orbit frequency (omega_z) Gyr-1 float
omega_z_50 50th Percentile MC vertical orbit frequency (omega_z) Gyr-1 float
omega_z_95 95th Percentile MC vertical orbit frequency (omega_z) Gyr-1 float
angle_R_5 5th Percentile MC radial orbit angle (angle_R) rad float
angle_R_50 50th Percentile MC radial orbit angle (angle_R) rad float
angle_R_95 95th Percentile MC radial orbit angle (angle_R) rad float
angle_phi_5 5th Percentile MC azimuthal orbit angle (angle_phi) rad float
angle_phi_50 50th Percentile MC azimuthal orbit angle (angle_phi) rad float
angle_phi_95 95th Percentile MC azimuthal orbit angle (angle_phi) rad float
angle_z_5 5th Percentile MC vertical orbit angle (angle_z) rad float
angle_z_50 50th Percentile MC vertical orbit angle (angle_z) rad float
angle_z_95 95th Percentile MC vertical orbit angle (angle_z) rad float
ecc_5 5th Percentile MC orbit eccentricity (ecc)   float
ecc_50 50th Percentile MC orbit eccentricity (ecc)   float
ecc_95 95th Percentile MC orbit eccentricity (ecc)   float
zmax_5 5th Percentile MC maximum Galactocentric height (zmax) kpc float
zmax_50 50th Percentile MC maximum Galactocentric height (zmax) kpc float
zmax_95 95th Percentile MC maximum Galactocentric height (zmax) kpc float
R_peri_5 5th Percentile MC Galactocentric pericenter radius (R_peri) kpc float
R_peri_50 50th Percentile MC Galactocentric pericenter radius (R_peri) kpc float
R_peri_95 95th Percentile MC Galactocentric pericenter radius (R_peri) kpc float
R_ap_5 5th Percentile MC Galactocentric apocenter radius (R_ap) kpc float
R_ap_50 50th Percentile MC Galactocentric apocenter radius (R_ap) kpc float
R_ap_95 95th Percentile MC Galactocentric apocenter radius (R_ap) kpc float
Energy_5 5th Percentile MC orbit energy (Energy) km-2 s-2 float
Energy_50 50th Percentile MC orbit energy (Energy) km-2 s-2 float
Energy_95 95th Percentile MC orbit energy (Energy) km-2 s-2 float

VAC_rv

sobject_id GALAH identifier   integer
use_rv_flag Radial velocity value has been used for rv_galah: rv_obst (0), rv_sme_v2 (1), Gaia DR2 (2) or n.a. (4)   integer
rv_galah Best-method radial velocity from GALAH spectra km s-1 float
e_rv_galah Uncertainty of rv_galah km s-1 float
rv_sme_v2 SME fitted radial velocity from GALAH spectra with correct vbary correction (vbary_v2) km s-1 float
rv_sme_v1 SME fitted radial velocity from GALAH spectra with wrong vbary correction (vbary_v1) km s-1 float
e_rv_sme Uncertainty of rv_sme_v2 km s-1 float
cov_e_rv_sme SME covariance fitting uncertainty sme.vrad km s-1 float
heliocentricJD Heliocentric Julian Date   float
vbary_v1 Wrong barycentric correction used for the original GALAH DR3 km s-1 float
vbary_v2 Correct barycentric correction used for the updated GALAH DR3 km s-1 float
rv_obst Radial Velocity with gravitational redshift correction km s-1 float
e_rv_obst Uncertainty of rv_obst km s-1 float
rv_nogr_obst Radial Velocity without gravitational redshift correction km s-1 float
e_rv_nogr_obst Uncertainty of rv_nogr_obst km s-1 float
MJD_local Modified Julian Date at middle of exposure d float
dr2_radial_velocity Radial velocity from Gaia DR2; identical to rv_gaia_dr2 km s-1 float
dr2_radial_velocity_error Radial velocity error from Gaia DR2; identical to e_rv_gaia_dr2 km s-1 float

VAC_GaiaEDR3

Unless otherwise stated, all values are from gaiaedr3.gaia_source.

star_id 2MASS identifier   string
sobject_id GALAH identifier   integer
dr2_source_id Gaia DR2 source_id   integer
dr3_source_id Gaia DR3 source_id   integer
angular_distance Angular distance between the two sources. Propagated from edr3.dr2_neighbourhood mas float
magnitude_difference G band magnitude difference between the sources. Propagated from edr3.dr2_neighbourhood mag float
proper_motion_propagation Flag indicating whether E/DR3 coordinates were proper motion corrected. Propagated from edr3.dr2_neighbourhood   boolean
solution_id Solution Identifier   integer
designation Unique source designation (unique across all Data Releases)   string
random_index Random index used to select subsets   integer
ref_epoch Reference epoch yr float
ra Right ascension deg float
ra_error Standard error of right ascension mas float
dec Declination deg float
dec_error Standard error of declination mas float
parallax Parallax mas float
parallax_error Standard error of parallax mas float
parallax_over_error Parallax divided by its standard error   float
pm Total proper motion mas yr-1 float
pmra Proper motion in right ascension direction mas yr-1 float
pmra_error Standard error of proper motion in right ascension direction mas yr-1 float
pmdec Proper motion in declination direction mas yr-1 float
pmdec_error Standard error of proper motion in declination direction mas yr-1 float
ra_dec_corr Correlation between right ascension and declination   float
ra_parallax_corr Correlation between right ascension and parallax   float
ra_pmra_corr Correlation between right ascension and proper motion in right ascension   float
ra_pmdec_corr Correlation between right ascension and proper motion in declination   float
dec_parallax_corr Correlation between declination and parallax   float
dec_pmra_corr Correlation between declination and proper motion in right ascension   float
dec_pmdec_corr Correlation between declination and proper motion in declination   float
parallax_pmra_corr Correlation between parallax and proper motion in right ascension   float
parallax_pmdec_corr Correlation between parallax and proper motion in declination   float
pmra_pmdec_corr Correlation between proper motion in right ascension and proper motion in declination   float
astrometric_n_obs_al Total number of observations AL   integer
astrometric_n_obs_ac Total number of observations AC   integer
astrometric_n_good_obs_al Number of good observations AL   integer
astrometric_n_bad_obs_al Number of bad observations AL   integer
astrometric_gof_al Goodness of fit statistic of model wrt along-scan observations   float
astrometric_chi2_al AL χ-square value   float
astrometric_excess_noise Excess noise of the source mas float
astrometric_excess_noise_sig Significance of excess noise   float
astrometric_params_solved Which parameters have been solved for?   integer
astrometric_primary_flag Primary or seconday   boolean
nu_eff_used_in_astrometry Effective wavenumber of the source used in the astrometric solution um s-1 float
pseudocolour Astrometrically estimated pseudocolour of the source um s-1 float
pseudocolour_error Standard error of the pseudocolour of the source um s-1 float
ra_pseudocolour_corr Correlation between right ascension and pseudocolour   float
dec_pseudocolour_corr Correlation between declination and pseudocolour   float
parallax_pseudocolour_corr Correlation between parallax and pseudocolour   float
pmra_pseudocolour_corr Correlation between proper motion in right asension and pseudocolour   float
pmdec_pseudocolour_corr Correlation between proper motion in declination and pseudocolour   float
astrometric_matched_transits Matched FOV transits used in the AGIS solution   integer
visibility_periods_used Number of visibility periods used in Astrometric solution   integer
astrometric_sigma5d_max The longest semi-major axis of the 5-d error ellipsoid mas float
matched_transits The number of transits matched to this source   integer
new_matched_transits The number of transits newly incorporated into an existing source in the current cycle   integer
matched_transits_removed The number of transits removed from an existing source in the current cycle   integer
ipd_gof_harmonic_amplitude Amplitude of the IPD GoF versus position angle of scan   float
ipd_gof_harmonic_phase Phase of the IPD GoF versus position angle of scan deg float
ipd_frac_multi_peak Percent of successful-IPD windows with more than one peak   integer
ipd_frac_odd_win Percent of transits with truncated windows or multiple gate   integer
ruwe Renormalised unit weight error   float
scan_direction_strength_k1 Degree of concentration of scan directions across the source   float
scan_direction_strength_k2 Degree of concentration of scan directions across the source   float
scan_direction_strength_k3 Degree of concentration of scan directions across the source   float
scan_direction_strength_k4 Degree of concentration of scan directions across the source   float
scan_direction_mean_k1 Mean position angle of scan directions across the source deg float
scan_direction_mean_k2 Mean position angle of scan directions across the source deg float
scan_direction_mean_k3 Mean position angle of scan directions across the source deg float
scan_direction_mean_k4 Mean position angle of scan directions across the source deg float
duplicated_source Source with multiple source identifiers   boolean
phot_g_n_obs Number of observations contributing to G photometry   integer
phot_g_mean_flux G-band mean flux electron s-1 float
phot_g_mean_flux_error Error on G-band mean flux electron s-1 float
phot_g_mean_flux_over_error G-band mean flux divided by its error   float
phot_g_mean_mag G-band mean magnitude mag float
phot_bp_n_obs Number of observations contributing to BP photometry   integer
phot_bp_mean_flux Integrated BP mean flux electron s-1 float
phot_bp_mean_flux_error Error on the integrated BP mean flux electron s-1 float
phot_bp_mean_flux_over_error Integrated BP mean flux divided by its error   float
phot_bp_mean_mag Integrated BP mean magnitude mag float
phot_rp_n_obs Number of observations contributing to RP photometry   integer
phot_rp_mean_flux Integrated RP mean flux electron s-1 float
phot_rp_mean_flux_error Error on the integrated RP mean flux electron s-1 float
phot_rp_mean_flux_over_error Integrated RP mean flux divided by its error   float
phot_rp_mean_mag Integrated RP mean magnitude mag float
phot_bp_n_contaminated_transits Number of BP contaminated transits   integer
phot_bp_n_blended_transits Number of BP blended transits   integer
phot_rp_n_contaminated_transits Number of RP contaminated transits   integer
phot_rp_n_blended_transits Number of RP blended transits   integer
phot_proc_mode Photometry processing mode   integer
phot_bp_rp_excess_factor BP/RP excess factor   float
bp_rp BP - RP colour mag float
bp_g BP - G colour mag float
g_rp G - RP colour mag float
dr2_radial_velocity Radial velocity from Gaia DR2; identical to rv_gaia_dr2 km s-1 float
dr2_radial_velocity_error Radial velocity error from Gaia DR2; identical to e_rv_gaia_dr2 km s-1 float
dr2_rv_nb_transits Number of transits used to compute radial velocity in Gaia DR2   integer
dr2_rv_template_teff Teff of the template used to compute radial velocity in Gaia DR2 K float
dr2_rv_template_logg logg of the template used to compute radial velocity in Gaia DR2 log(cm s-2) float
dr2_rv_template_fe_h [Fe/H] of the template used to compute radial velocity in Gaia DR2 dex float
l Galactic longitude deg float
b Galactic latitude deg float
ecl_lon Ecliptic longitude deg float
ecl_lat Ecliptic latitude deg float
zpt_ll2020 Parallax Zeropoint following Lindegren et al. (2020) mas float
parallax_corr parallax corrected by subtracting zpt_ll2020 mas float
r_med_geo The median of the geometric distance posterior. The geometric distance estimate. Propagated from BJ+21. pc float
r_lo_geo The 16th percentile of the geometric distance posterior. The lower 1-sigma-like bound on the confidence interval. Propagated from BJ+21. pc float
r_hi_geo The 84th percentile of the geometric distance posterior. The upper 1-sigma-like bound on the confidence interval. Propagated from BJ+21. pc float
r_med_photogeo The median of the photogeometric distance posterior. The photogeometric distance estimate. Propagated from BJ+21. pc float
r_lo_photogeo The 16th percentile of the photogeometric distance posterior. The lower 1-sigma-like bound on the confidence interval. Propagated from BJ+21. pc float
r_hi_photogeo The 84th percentile of the photogeometric distance posterior. The upper 1-sigma-like bound on the confidence interval. Propagated from BJ+21. pc float
flag_edr3dist Additional information on the solution. Do not use for filtering. Propagated from BJ+21; original name flag.   string