GAVO at Leibniz-Institute for Astrophysics Potsdam
Description:
This service gives access to the 4th data release of RAVE (RAdial
Velocity Experiment). It contains radial velocities of stars, stellar
atmospheric parameters, some abundances and distances.
The catalogue WDSLOAN10 has been constructed by spectroscopically
selecting white dwarfs and subdwarfs in the Sloan Digital Sky Survey
Data Release 10. It offers Teff, log(g) and mass for hydrogen
atmosphere white dwarf stars (DAs) and helium atmosphere white dwarf
stars (DBs), and estimatives of calcium/helium abundances for the
white dwarf stars with metallic lines (DZs) and carbon/helium for
carbon dominated spectra DQs.
The Fifth Catalogue of Nearby Stars (CNS5) aims to provide the most
volume-complete sample of stars in the solar neighbourhood. The CNS5
is compiled based on trigonometric parallaxes from Gaia EDR3 and
Hipparcos, and supplemented with astrometric data from Spitzer and
ground-based surveys carried out in the infrared. The CNS5 catalogue
is statistically complete down to 19.7 mag in G-band and 11.8 mag in
W1-band absolute magnitudes, corresponding to a spectral type of L8.
Continuous updates of observational data for nearby stars from all
sources were collected and evaluated. For all known stars in the 25 pc
sphere around the Sun, the best values of positions in space,
velocities, and magnitudes in different filters are presented.
This is a clean and well characterised catalogue of objects within 100pc of
the Sun from the Gaia early third data release. We characterise the
catalogue using the full data release, and comparisons to other catalogues
in literature and simulations. For all candidates (measured parallax <
8 mas), we calculate a distance probability function using Bayesian
procedures and mock catalogues for the prediction of the priors. For each
entry using a random forest classifier we attempt to remove sources with
spurious astrometric solutions.
This results in 331312 objects that should contain at least 92% of stars
within 100 pc at spectral type M9.
GCNS comes with several auxiliary tables, in particular lists of
resolved stellar systems, of known neary stars not found in eDR3 and
of candidates of Hyades and ComaBer cluster members.
The catalog 1WHSP is the result of a multi-frequency selection for
blazars like SED, further filtered using IR-radio and IR-X-ray
flux-ratios. The sample assembled contains almost 992 sources of HSP
blazars, of which 425 are previously known blazars, 151 new
identifications and 416 blazar candidates. On the very high energy
trend, 299 are confirmed GeV gamma-ray photons emitters and 36 have
already been detected in the TeV band.