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arXiv · 2106.12101

The Heraklion Extragalactic Catalogue (HECATE): a value-added galaxy catalogue for multi-messenger astrophysics

Konstantinos Kovlakas·Andreas Zezas·Jeff J. Andrews·Antara Basu-Zych·Tassos Fragos·Ann Hornschemeier·Konstantinos Kouroumpatzakis·Bret Lehmer·Andrew Ptak
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Abstract

We present the Heraklion Extragalactic Catalogue, or HECATE, an all-sky value-added galaxy catalogue, aiming to facilitate present and future multi-wavelength and multi-messenger studies in the local Universe. It contains 204,733 galaxies up to a redshift of 0.047 (D<200 Mpc), and it is >50% complete in terms of the B-band luminosity density at distances in the 0-170 Mpc range. By incorporating and homogenising data from astronomical databases and multi-wavelength surveys, the catalogue offers positions, sizes, distances, morphological classifications, star-formation rates, stellar masses, metallicities, and nuclear activity classifications. This wealth of information can enable a wide-range of applications, such as: (i) demographic studies of extragalactic sources, (ii) initial characterisation of transient events, and (iii) searches for electromagnetic counterparts of gravitational-wave events. The catalogue is publicly available to the community at a dedicated portal, which will also host future extensions in terms of the covered volume, and data products.

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Konstantinos Kovlakas, Andreas Zezas, Jeff J. Andrews, Antara Basu-Zych, Tassos Fragos, Ann Hornschemeier, Konstantinos Kouroumpatzakis, Bret Lehmer, Andrew Ptak. 2021-06-22. The Heraklion Extragalactic Catalogue (HECATE): a value-added galaxy catalogue for multi-messenger astrophysics. https://doi.org/10.1093/mnras/stab1799

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