OpenNGC is a database containing positions and main data of NGC (New
General Catalogue) and IC (Index Catalogue) objects. It has been built
by merging data from NED, HyperLEDA, SIMBAD, and several databases
available at HEASARC.
In this VO publication, we have changed most of the column names,
mostly to make them work as ADQL column names without resorting to
delimited identifiers. The mapping should be obvious.
Parameters of 220 million stars from Gaia BP/RP (XP) spectra
Short Name:
XP ap-pars
Date:
19 Jun 2023 07:31:09
Publisher:
The GAVO DC team
Description:
We present astrophysical parameters of 220 million stars, based on
Gaia XP spectra and near-infrared photometry from 2MASS and WISE.
Instead of using ab initio stellar models, we develop a data-driven
model of Gaia XP spectra as a function of the stellar parameters, with
a few straightforward built-in physical assumptions. This resource is
a VO re-publication of the resulting catalog of stellar parameters.
For bulk downloads, the covariances, the trained model, and more, see
https://zenodo.org/record/7811871.
The database of Gamma Ray Burst (GRB) photometrical observations
obtained on defferent telescopes at Fesenkov Astrophysical Institute,
Almaty, Kazakhstan. Observations were carried out in the optical
range.
From 1986 through 1991, the Astronomical Institute of Münster
University performed a search for flare stars in several southern
associations and open stellar clusters using the GPO telescope (d=40
cm, WFPDB identifier ESO040); the fields suveyed include Coalsack,
M42, B228 Lup, the Chameleon T1 association, omicron Vel cluster, R
CrA association, the Pipe nebula (B59 Oph), and the Sco-Oph
association. This was done primarily through multiple exposures. The
files published here are plate scans done in 2017.
The obscore collection name for these files is Muenster Flare Survey.
This is a redacted version of the SDSS DR16 table prepared for VizieR
(V/154/sdss16). It is mainly here to facilitate local matches; for
original SDSS-related research, it is probably better to somewhere
else.
Over VizieR and SDSS, we are keeping most of the per-band values in
arrays to keep the column list manageable. Note that in ADQL, array
indexes are 1-based.
We are trying to orient our column names on SDSS but use underscores
instead of camel-casing (e.g. spec_obj_id instead of SpecObjID), since
mixed-case identifiers in SQL is asking for trouble.
To save space, we do not keep psf-based classifications, per-band
offsets, spectrum metadata, and USNO-related information in this
table. Let the operators know if you need any of that.
Smithsonian Astrophysical Observatory Telescope Data Center
Description:
This catalog contains derived information and access to spectra for a
catalog of objects in the field of M31, drawn from the study of star
clusters, HII regions, PNe and individual stars in M31 done with
Hectospec on the MMT by Nelson Caldwell and a host of others.
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.