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172. STELIB library
- ID:
- ivo://svo.cab/cat/stelib
- Title:
- STELIB library
- Short Name:
- STELIB library
- Date:
- 03 Jun 2020 15:30:50
- Publisher:
- SVO/CAB
- Description:
- STELIB stellar library
- ID:
- ivo://org.gavo.dc/annisred/q/cone
- Title:
- Stripe 82 Photometric Redshifts from SDSS Coadditions
- Short Name:
- s82 coadd cone
- Date:
- 23 Mar 2022 13:13:08
- Publisher:
- The GAVO DC team
- Description:
- This survey gives photometric redshifts of objects within 275 deg² (−50◦ < α < 60◦ and −1.◦25 < δ < +1.◦25) centered on the Celestial Equator. Each piece of sky has ∼20 runs of repeated scanning by the SDSS camera contributing and thus reaches ∼2 mag fainter than the SDSS single pass data, i.e., to r ∼ 23.5 for galaxies.
174. SuperCOSMOS Sources
- ID:
- ivo://org.gavo.dc/supercosmos/q/s
- Title:
- SuperCOSMOS Sources
- Short Name:
- supercosmos scs
- Date:
- 23 Mar 2022 13:13:06
- Publisher:
- The GAVO DC team
- Description:
- The SuperCOSMOS data primarily originate from scans of the UK Schmidt and Palomar POSS II blue, red and near-IR sky surveys. The ESO Schmidt R (dec < -17.5) and Palomar POSS-I E (dec > -17.5) surveys have also been scanned and provide an early (1st) epoch red measurement. Mirrored here is the source table containing four-plate multi-colour, multi-epoch data which are merged into a single source catalogue for general science exploitation. Within the GAVO DC, some column names have been adapted to local customs (primarily positions, proper motions).
- ID:
- ivo://org.gavo.dc/cns5/q/cone
- Title:
- The Fifth Catalogue of Nearby Stars (CNS5)
- Short Name:
- CNS5
- Date:
- 04 Sep 2023 13:07:14
- Publisher:
- The GAVO DC team
- Description:
- 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.
- ID:
- ivo://org.gavo.dc/ucac5/q/cone
- Title:
- The fifth U.S. Naval Observatory CCD Astrograph Catalog (UCAC5)
- Short Name:
- UCAC 5
- Date:
- 23 Mar 2022 13:13:08
- Publisher:
- The GAVO DC team
- Description:
- New astrometric reductions of the US Naval Observatory CCD Astrograph Catalog (UCAC) all-sky observations were performed from first principles using the TGAS stars in the 8 to 11 magnitude range as reference star catalog. Significant improvements in the astrometric solutions were obtained and the UCAC5 catalog of mean positions at a mean epoch near 2001 was generated. By combining UCAC5 with Gaia DR1 data new proper motions on the Gaia coordinate system for over 107 million stars were obtained with typical accuracies of 1 to 2 mas/yr (R = 11 to 15 mag), and about 5 mas/yr at 16th mag. Proper motions of most TGAS stars are improved over their Gaia data and the precision level of TGAS proper motions is extended to many millions more, fainter stars. The database table uses actual NULLs for missing photometry, and all angular coordinates have been homogenised to degrees.
- ID:
- ivo://org.gavo.dc/ucac4/q/s
- Title:
- The fourth U.S. Naval Observatory CCD Astrograph Catalog (UCAC4)
- Short Name:
- ucac4 scs
- Date:
- 23 Mar 2022 13:13:16
- Publisher:
- The GAVO DC team
- Description:
- UCAC4 is a compiled, all-sky star catalog covering mainly the 8 to 16 magnitude range in a single bandpass between V and R. Positional errors are about 15 to 20 mas for stars in the 10 to 14 mag range. Proper motions have been derived for most of the about 113 million stars utilizing about 140 other star catalogs with significant epoch difference to the UCAC CCD observations. These data are supplemented by 2MASS photometric data for about 110 million stars and 5-band (B,V,g,r,i) photometry from the APASS (AAVSO Photometric All-Sky Survey) for over 50 million stars. UCAC4 also contains error estimates and various flags. All bright stars not observed with the astrograph have been added to UCAC4 from a set of Hipparcos and Tycho-2 stars. Thus UCAC4 should be complete from the brightest stars to about R=16, with the source of data indicated in flags.
- ID:
- ivo://org.gavo.dc/gcns/q/cone
- Title:
- The Gaia eDR3 Catalogue of Nearby Stars GCNS
- Short Name:
- eDR3 GCNS SCS
- Date:
- 06 Feb 2024 09:10:02
- Publisher:
- The GAVO DC team
- Description:
- 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.
- ID:
- ivo://svo.cab/cat/gbs
- Title:
- The Gaia FGK Benchmark Stars
- Short Name:
- Gaia Benchmarks
- Date:
- 03 Jun 2020 15:29:07
- Publisher:
- SVO/CAB
- Description:
- The Gaia FGK Benchmark Stars. Library of high resolution and high signal to noise ratio stellar spectra.
- ID:
- ivo://org.gavo.dc/gps1/q/cone
- Title:
- The Gaia-PS1-SDSS (GPS1) Proper Motion Catalog
- Short Name:
- GPS1
- Date:
- 23 Mar 2022 13:13:03
- Publisher:
- The GAVO DC team
- Description:
- This catalog combines Gaia DR1, Pan-STARRS 1, SDSS and 2MASS astrometry to compute proper motions for 350 million sources across three-fourths of the sky down to a magnitude of mr≈20. Positions of galaxies from Pan-STARRS 1 are used to build a reference frame for PS1, SDSS, and 2MASS data. Gaia DR1 is adapted to that reference frame by exploiting that locally, proper motions are linear. GPS1 has a characteristic systematic error of less than 0.3 mas/yr, and a typical precision of 1.5−2.0 mas/yr. The proper motions have been validated using galaxies, open clusters, distant giant stars and QSOs. In comparison with other published faint proper motion catalogs, GPS1's systematic error (<0.3 mas/yr) is about 10 times better than that of PPMXL and UCAC4 (>2.0 mas/yr). Similarly, its precision (~1.5 mas/yr) is an improvement by ∼ 4 times relative to PPMXL and UCAC4 (∼6.0 mas/yr). For QSOs, the precision of GPS1 is found to be worse (∼2.0−3.0 mas/yr), possibly due to their particular differential chromatic refraction (DCR).