Data Central uses cookies to make your browsing experience better. By using Data Central you agree to its use of cookies. Learn more I agree


Find information, examples, FAQs and extensive descriptions of the data, curated by the survey teams.

GALAH logo


The Galactic Archaeology with HERMES survey is collecting stellar parameters and abundances for one million stars in the Milky Way. GALAH yields a comprehensive view of the formation & evolution of the Galaxy.
May 5, 2018 by S. Sharma
Oct. 11, 2020, 2:50 p.m. J. Simpson



Data Release 2.1 (2018-05-09)

New Features

The gaia_dr2_id column has now been populated with Gaia DR2 source_id. As the input catalogue for GALAH DR2 is 2MASS, for cross matching we have used the tmass_best_neighbour table created by Gaia.

Bug Fixes

There was a bug related to how the gravitational redshift correction that was applied to the rv_obst, e_rv_obst, e_rv_nogr_obst columns. The size of the effect is between –0.7 km/s and 0.1 km/s for rv_obst. Note that this bug did not affect the rv_nogr_obst columns. See the Table Schema for a description of these columns.

Size of bug in rv_obst in GALAH DR2.0

Median spectra

In the process of calculating the data-based radial velocities (rv_obst in the DR2 table), we have produced median spectra for well-populated regions of the effective temperature - surface gravity - metallicity parameter space. These are fully described in Zwitter et al. 2018, and can be directly downloaded.

Data Release 2.0 (2018-04-18)

GALAH DR2 contains stellar parameters and abundances for 342682 stars observed as part of the main GALAH survey between 2014 January 16 and 2018 January 29. A full description of its contents can be found on the What's in GALAH DR2? page.

May 5, 2018 by S. Sharma
Oct. 11, 2020, 2:50 p.m. J. Simpson