Subject: stars / Publisher: The GAVO DC team - STScI NAVO Directory Search Results

ID:: ivo://org.gavo.dc/arigfh/q/cone
Title:: ARIGFH identified objects
Short Name:: arigfh scs
Date:: 27 Dec 2024 08:31:12
Publisher:: The GAVO DC team
Description:: ARI's "Geschichte des Fixsternhimmels" is an attempt to collect all astrometrically useful observations from before ca. 1970 in a way comparable to what has been done to construct the FK* series of fundamental catalogs. About 7e6 published positions are included. In GAVO's DC, we provide tables of identified and non-identified stars together with the master catalog that objects were identified against.

ID:: ivo://org.gavo.dc/arigfh/q/gfhtables
Title:: ARIGFH object catalog
Date:: 06 Feb 2024 09:06:47
Publisher:: The GAVO DC team
Description:: ARI's "Geschichte des Fixsternhimmels" is an attempt to collect all astrometrically useful observations from before ca. 1970 in a way comparable to what has been done to construct the FK* series of fundamental catalogs. About 7e6 published positions are included. In GAVO's DC, we provide tables of identified and non-identified stars together with the master catalog that objects were identified against.

ID:: ivo://org.gavo.dc/arihip/q/cone
Title:: ARIHIP astrometric catalogue
Short Name:: arihip cone
Date:: 27 Dec 2024 08:31:05
Publisher:: The GAVO DC team
Description:: The catalogue ARIHIP has been constructed by selecting the 'best data' for a given star from combinations of HIPPARCOS data with Boss' GC and/or the Tycho-2 catalogue as well as the FK6. It provides 'best data' for 90 842 stars with a typical mean error of 0.89 mas/year (about a factor of 1.3 better than Hipparcos for this sample of stars).

ID:: ivo://org.gavo.dc/ucac3/q/corr
Title:: Corrections between UCAC3 and PPMXL
Short Name:: UCAC3 ICRS corr
Date:: 27 Dec 2024 08:31:13
Publisher:: The GAVO DC team
Description:: Differences between UCAC3 and PPMXL in positions and proper motions, on an all-sky one-degree grid. At each gridpoint we give the differences X(PPMXL)- X(UCAC3) averaged over all stars in a sqrt(2)/2-degrees environment around the gridpoint given. The corrections given here should bring UCAC3 based astrometry to the ICRS.

ID:: ivo://org.gavo.dc/ppmxl/q/corr
Title:: Corrections between USNO-B and PPMXL
Short Name:: PPMXL USNO corr
Date:: 27 Dec 2024 08:31:04
Publisher:: The GAVO DC team
Description:: Differences between USNO-B and PPMXL in positions and proper motions, on an all-sky one-degree grid. At each gridpoint we give the differences X(PPMXL)- X(USNO-B1.0) averaged over all stars in a sqrt(2)/2-degrees environment around the gridpoint given. The corrections given here should bring USNO-B based astrometry to the ICRS.

ID:: ivo://org.gavo.dc/gdr2dist/q/cone
Title:: Estimated distances to 1.33 billion stars in Gaia DR2
Short Name:: gdr2dist scs
Date:: 27 Dec 2024 08:31:05
Publisher:: The GAVO DC team
Description:: This catalogue provides distances estimates (and uncertainties therein) for 1.33 billion stars over the whole sky brighter than about G=20.7. These have been estimated using the parallaxes (and their uncertainties) from Gaia DR2. A Bayesian procedure was used involving a prior with a single parameter L(l,b), which varies smoothly with Galactic longitude and latitude according to a Galaxy model. The posterior is summarized with a point estimate (usually the mode) and a confidence interval (usually the 68% highest density interval). The estimation procedure is described in detail in the `accompanying paper`_, which also analyses the catalogue content. .. _accompanying paper: http://www.mpia.de/homes/calj/gdr2_distances.html

ID:: ivo://org.gavo.dc/gaia/q/dr1
Title:: Gaia Data Release 1 (DR1) gaia_source
Date:: 17 Sep 2020 08:07:06
Publisher:: The GAVO DC team
Description:: This table, corresponding to gaia_source of the full DR1, contains the 1.15 billion objects reliably detected in the first 14 months of Gaia observations. It essentially consists of high-precision positions and magnitudes. The TGAS subset (about 2 million objects observed by both Gaia and Hipparcos) has proper motions and parallaxes. Users are advised to beware strong correlations between the astrometric parameters present for some of the less densely observed objects and the inhomogeneous coverage in this first data release (solution id: 1635378410781933568).

ID:: ivo://org.gavo.dc/gaia/q2/dr2epochflux
Title:: Gaia DR2 epoch fluxes
Short Name:: gaia.dr2epochflu
Date:: 27 Dec 2024 08:31:02
Publisher:: The GAVO DC team
Description:: A table of the light curves released with Gaia DR2 (about half a million in total). In each Gaia band (G, BP, RP), we give epochs, fluxes and their errors in arrays. We do not include the quality flags (DR2: “may be safely ignored for many general purpose applications”). You can access them through the associated datalink service if you select source_id. You will usually join this table with gaia.dr2light. We have also removed all entries with NaN observation times; hence, the array lengths in the different bands can be significantly different, and the indices in transit_ids do not always correspond to the indices in the time series. Furthermore, we only give fluxes and their errors here rather than magnitudes. Fluxes can be turned into magnitude using:: mag = -2.5 log10(flux)+zero point, where the zero points assumed for Gaia DR2 are 25.6884±0.0018 in G, 25.3514±0.0014 in BP, and 24.7619±0.0019 in RP (VEGAMAG).

ID:: ivo://org.gavo.dc/gaia/q2/dr2lcone
Title:: Gaia DR2-light Cone Search
Short Name:: GDR2light SCS
Date:: 27 Dec 2024 08:31:02
Publisher:: The GAVO DC team
Description:: This schema contains data re-published from the official Gaia mirrors (such as ivo://uni-heidelberg.de/gaia/tap) either to support combining its data with local tables (the various Xlite tables) or to make the data more accessible to VO clients (e.g., epoch fluxes). Other Gaia-related data is found in, among others, the gdr2dist, gdr3mock, gdr3spec, gedr3auto, gedr3dist, gedr3mock, and gedr3spur schemas.

ID:: ivo://org.gavo.dc/gaia/q2/ssa
Title:: Gaia DR2 light curves SSA
Short Name:: GDR2 TS SSAP
Date:: 27 Dec 2024 08:31:02
Publisher:: The GAVO DC team
Description:: This service exposes about 0.5 million light curves of stars classified as variable by the Gaia analysis system through the VO SSAP protocol. The lightcurves are published per-band and are also available through obscore.

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