We provide three catalogs matched to the LEGA-C DR3 general catalog, containing measurements of absorption indices and stellar population parameters for 4,081 galaxies. The full dataset and analysis are described in Gallazzi et al. (2026a, b). Vizier-CDS catalogs are also available.
Any work using all or part of these catalogs must reference the following papers:
An explicit acknowledgement to the BaStA dataset and a reference to the BaStA website is also appreciated.
Two versions of absorption index measurements on emission-line subtracted LEGA-C spectra are available:
Both catalogs include measurements of 25 Lick absorption indices, D4000n and 5 composite indices (Hd+Hg, Mg2Fe, [MgFe]', Mgb/<Fe>, [MgFe50]', [MgFe52]') for 4,081 LEGA-C DR3 spectra. Indices are measured on emission-line subtracted spectra at the actual spectral resolution. Each index measurement includes the value, error, quality flag, and resolving power.
Stellar population parameters derived from three independent SED fitting methods:
Physical parameters include: stellar mass, light- and mass-weighted ages, light- and mass-weighted stellar metallicities, dust attenuation, and star formation rates.
The catalog also provides sample selection flags (silver/golden samples) and completeness weights as described in Gallazzi et al. (2026a, b).