HSOY is a catalog of 583'001'653 objects with precise astrometry based on
PPMXL and Gaia DR1. Typical formal errors at mean epoch in proper motion are
below 1 mas/yr for objects brighter than 10 mag, and about 5 mas/yr at the
faint end (about 20 mag). South of -30 degrees, astrometry is significantly
worse. HSOY also contains, where available, USNO-B, Gaia, and 2MASS
photometry. HSOY's positions and proper motions are given for epoch J2000.
The catalog becomes severely incomplete faintwards of 16 mag in the G-band.
The mean epochs are typically very close to Gaia's J2015.
HSOY still contains about 0.7% spurious close
"binaries" (non-matched stars) from the original USNO-B (marked with non-NULL
clone). Also, failed matches within Gaia DR1 contribute another 1.5% spurious
pairs (marked with non-NULL comp). In both cases, astrometry presumably is
sub-standard.
More information is available at http://dc.g-vo.org/hsoy.
TheoSSA provides spectral energy distributions based on model
atmosphere calculations. Currently, we serve results obtained using
the Tübingen NLTE Model Atmosphere Package (TMAP) for hot compact
stars.
The Panchromatic High-Resolution Spectroscopic Survey of Local Group
Star Clusters PCSLG
Short Name:
PCSLG SSAP
Date:
23 Mar 2022 13:13:17
Publisher:
The GAVO DC team
Description:
This dataset contains spectroscopic observations of 29 globular
clusters in the Magellanic Clouds and the Milky Way performed with
VLT/X-shooter over eight full nights.
A catalogue of 541 nearby (within 10pc of the sun) stars, brown
dwarfs, and confirmed exoplanets in 336 systems, as well 21
candidates, compiled from SIMBAD and several other sources. Where
available, astrometry and photometry from Gaia eDR3 has been inserted.
PPMXL is a catalog of positions, proper motions, 2MASS- and optical
photometry of 900 million stars and galaxies, aiming to be complete
down to about V=20 full-sky. It is the result
of a re-reduction of USNO-B1 together with 2MASS to the ICRS as
represented by PPMX. This service additionally provides improved proper
motions computed according to Vickers et al, 2016
(:bibcode:`2016AJ....151...99V`).
Parts I and III of the sixth fundamental catalog, a catalog of
high-precision astrometry for bright stars combining centuries of
ground-based observations as reflected in FK5 with HIPPARCOS
astrometry.
The result contains, in particular for the proper motions,
statistically significant improvements of the Hipparcos data und
represents a system of unprecedented accuracy for these 4150
fundamental stars. The typical mean error in pm is 0.35 mas/year for
878 basic stars, and 0.59 mas/year for the sample of the 3272
additional stars.
The The VO @ ASTRON's sitewide SIAP version 2 service
publishes all the images published through the site. For more advanced
queries including uploads, all this data is also available through
ObsTAP.
This service provides oscillator strengths and transition
probabilities. Mainly based on experimental energy levels, these were
calculated with the pseudo-relativistic Hartree-Fock method including
core-polarization corrections.
A validator for IVOA identifiers, checking
conformity to version 2 of the specification.
The service returns results in a tabular format, where an identifier is
valid if no row with msg_type="ERROR" is present.
As per DALI, the format of the table returned can be controlled
through the RESPONSEFORMAT parameter; for machine consumption, the
most useful values for that parameter are probably json and votable.
The code used here is available at
http://svn.ari.uni-heidelberg.de/svn/gavo/hdinputs/ivoidval
These are 1.4GHz Very Long Baseline Interferometry images of 532
radio sources with a flux density exceeding 100uJy as determined by
Ibar et al. (2009, MNRAS, 397, 281), obtained between 2010-06-03 and
2010-09-03.
For all fields, we give frames processed using natural weighting to
preserve maximal sensitivity. For the 65 detected sources, we
additionally give frames processed using uniform weighting to suppress
sidelobes (see Middelberg et al. 2013, A&A 551, 97 for details) in
flux density measurements. Some sources have larger images to cover a
larger area because the initial coordinates were not sufficiently
accurate.
Band merged JHKs catalogue for first epoch data from CASU v1.3. VVV
DR1, corrected for header errors (Mike Irwin, Private Communication).
Release of the Milky Way bulge and southern plane from the
near-infrared ESO public survey VISTA variables in the Vía Láctea.