Information on resource 'VHE Redshifts'
This resource is dedicated to the redshift determination of gamma-ray
blazars whose distance is unknown and which are good candidates for
the next generation of ground-based Cherenkov telescopes (CTAO). It
supports the Redshift Determination Group of the CTAO consortium.
Sources are selected from blazars in Fermi-LAT catalogues that still
lack redshift data. Their detectability with CTAO is evaluated via
Monte Carlo simulations. This resource provides access to a database
containing useful information for determining the redshift of the
selected sources: coordinates, counterparts, magnitudes, host
properties, optical spectra, light curves, CTAO detectability, etc. It
also includes the redshift status and is updated with new redshift
results as soon as they become publicly available. We strive to ensure
that the contents of the database are complete and accurate.
Tables defined within this resource descriptor
- vhe_redshifts.main – queryable through TAP and ADQL
This table contains the name and coordinates of each selected source,
published information about its redshift when available, the name and
coordinates of its counterpart, and the magnitudes obtained in the
Pan-STARRS (DR2), DSS (USNO-B1.0), and Gaia (EDR3) surveys. The names
of the counterparts are taken from the Fermi-LAT 4LAC-DR3 catalogue,
and they were subsequently verified and replaced in a few cases as
necessary. The coordinates of the counterparts are the optical ones
when available (the Status column is then set to 1). Details on
detectability by CTAO are provided in the "CTAO simulations" table.
Copyright, License, Acknowledgements
CC-BY
[Manage RD]