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