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arXiv · 2108.00744

The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 3: 3000 High-Quality Spectra of $K_s$-selected galaxies at $z>0.6$

Arjen van der Wel·Rachel Bezanson·Francesco D'Eugenio·Caroline Straatman·Marijn Franx·Josha van Houdt·Michael V. Maseda·Anna Gallazzi·Po-Feng Wu·Camilla Pacifici·Ivana Barisic·Gabriel B. Brammer·Juan Carlos Munoz-Mateos·Sarah Vervalcke·Stefano Zibetti·David Sobral·Anna de Graaff·Joao Calhau·Yasha Kaushal·Adam Muzzin·Eric F. Bell·Pieter G. van Dokkum
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Abstract

We present the third and final data release of the Large Early Galaxy Astrophysics Census (LEGA-C), an ESO/VLT public spectroscopic survey targeting $0.6 < z < 1.0$, Ks-selected galaxies. The data release contains 3528 spectra with measured stellar velocity dispersions and stellar population properties, a 25-fold increase in sample size compared to previous work. This $K_s$-selected sample probes the galaxy population down to $\sim0.3 L^*$, for all colors and morphological types. Along with the spectra we publish a value-added catalog with stellar and ionized gas velocity dispersions, stellar absorption line indices, emission line fluxes and equivalent widths, complemented with structural parameters measured from HST/ACS imaging. With its combination of high precision and large sample size, LEGA-C provides a new benchmark for galaxy evolution studies.

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Arjen van der Wel, Rachel Bezanson, Francesco D'Eugenio, Caroline Straatman, Marijn Franx, Josha van Houdt, Michael V. Maseda, Anna Gallazzi, Po-Feng Wu, Camilla Pacifici, Ivana Barisic, Gabriel B. Brammer, Juan Carlos Munoz-Mateos, Sarah Vervalcke, Stefano Zibetti, David Sobral, Anna de Graaff, Joao Calhau, Yasha Kaushal, Adam Muzzin, Eric F. Bell, Pieter G. van Dokkum. 2021-08-02. The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 3: 3000 High-Quality Spectra of $K_s$-selected galaxies at $z>0.6$. https://doi.org/10.3847/1538-4365/ac1356

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