|
star_id
|
|
char[16]
|
2MASS ID number by default, UCAC4 ID number if 2MASS unavailable (begins with UCAC4-)
|
|
sobject_id
|
|
int64
|
Unique per-observation star ID
|
|
gaia_dr2_id
|
|
int64
|
Gaia DR2 SOURCE_ID
|
|
ndfclass
|
|
char[12]
|
Observation type
|
|
field_id
|
|
int64
|
GALAH internal field ID number
|
|
raj2000
|
Deg
|
float64
|
Right ascension from 2MASS, J2000
|
|
dej2000
|
Deg
|
float64
|
Declination from 2MASS, J2000
|
|
jmag
|
Mag
|
float64
|
J magnitude from 2MASS
|
|
hmag
|
Mag
|
float64
|
H magnitude from 2MASS
|
|
kmag
|
Mag
|
float64
|
K magnitude from 2MASS
|
|
vmag_jk
|
Mag
|
float64
|
Synthetic V magnitude calculated from JHK, used for target selection
|
|
e_jmag
|
Mag
|
float64
|
Uncertainty in J magnitude, from 2MASS
|
|
e_hmag
|
Mag
|
float64
|
Uncertainty in H magnitude, from 2MASS
|
|
e_kmag
|
Mag
|
float64
|
Uncertainty in K magnitude, from 2MASS
|
|
snr_c1
|
|
float64
|
Signal to noise per pixel in the HERMES blue channel
|
|
snr_c2
|
|
float64
|
Signal to noise per pixel in the HERMES green channel
|
|
snr_c3
|
|
float64
|
Signal to noise per pixel in the HERMES red channel
|
|
snr_c4
|
|
float64
|
Signal to noise per pixel in the HERMES IR channel
|
|
rv_synt
|
km/s
|
float64
|
Radial velocity from cross-correlation against synthetic spectra
|
|
e_rv_synt
|
km/s
|
float64
|
Uncertainty in rv_synt
|
|
rv_obst
|
km/s
|
float64
|
Radial velocity from internal cross-correlation against data
|
|
e_rv_obst
|
km/s
|
float64
|
Uncertainty in rv_obst
|
|
rv_nogr_obst
|
km/s
|
float64
|
Radial velocity from internal cross-correlation against data, uncorrected for gravitational redshift
|
|
e_rv_nogr_obst
|
km/s
|
float64
|
Uncertainty in rv_nogr_obst
|
|
chi2_cannon
|
|
float64
|
Summed chi-squared over all spectral pixels
|
|
sp_label_distance
|
|
float64
|
Label distance similar to Ho et al. (2017)
|
|
flag_cannon
|
|
int64
|
Bitmask for spectrum information. Flag=0 parameters are recommended for use.
|
|
teff
|
K
|
float64
|
Effective temperature
|
|
e_teff
|
K
|
float64
|
Uncertainty in teff
|
|
logg
|
log(cm/s**2)
|
float64
|
Surface gravity
|
|
e_logg
|
log(cm/s**2)
|
float64
|
Uncertainty in logg
|
|
fe_h
|
dex
|
float64
|
Iron abundance (not overall metallicity [M/H])
|
|
e_fe_h
|
dex
|
float64
|
Uncertainty in fe_h
|
|
vmic
|
km/s
|
float64
|
Microturbulent velocity
|
|
e_vmic
|
km/s
|
float64
|
Uncertainty in vmic
|
|
vsini
|
km/s
|
float64
|
Line of sight rotational velocity
|
|
e_vsini
|
km/s
|
float64
|
Uncertainty in vsini
|
|
alpha_fe
|
dex
|
float64
|
Alpha enhancement, determined as an error-weighted combination of Mg, Si, Ca, Ti
|
|
e_alpha_fe
|
dex
|
float64
|
Uncertainty in alpha_fe
|
|
x_fe
|
dex
|
float64
|
[X/Fe] abundance for element X. Elements reported in this table are Li, C, O, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Ba, La and Eu
|
|
e_x_fe
|
dex
|
float64
|
Uncertainty in x_fe
|
|
flag_x_fe
|
|
int64
|
Bitmask indicating difficulty in abundance determination. Flag=0 abundances are recommended for use.
|
