VizieR Online Data Catalog: White dwarf and subdwarf stars in SDSS DR14 (Kepler+, 2019)
Abstract
We extended our search of white dwarf and subdwarf stars to SDSS DR14. In addition to searching all spectra with significant proper motion for new white dwarfs, we also fitted known DAs and DBs that fell in our selection criteria. The SDSS flux calibration is based on hundreds of comparison stars and in general more accurate than those derived from single night observations. We fitted the spectra of highest S/N for each star, taking into account that SDSS re-observes fields and improves the quality of the spectra. Our classifications are independent from previous classifications, and should be considered improvements.
Of the total 37053 objects in our Table 2, only 6 per cent come from plates obtained after DR12, but only 13927 are in the SDSS DR 7 to DR 12 catalogues. The DR7 to DR12 catalogues contain 35590 stars, including 29262 DAs, so our catalogues are not a subset or complete sets, but complementary. The total number of unique stars in Kleinman et al. (2013ApJS..204....5K, Cat. J/ApJS/204/5), Kepler et al. (2015MNRAS.446.4078K, Cat. J/MNRAS/446/4078, 2016MNRAS.455.3413K, Cat. J/MNRAS/455/3413), and this DR14 catalogue is 52299, with 28681 DAs, 2287 DCs, 2148 DBs, 1126 DZs, 572 DQs, 137 DOs, 4 DS, 396 sdB, 410 sdOs, and 324 CVs. (3 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- August 2022
- Bibcode:
- 2022yCat..74862169K
- Keywords:
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- Stars: dwarfs;
- Stars: subdwarf;
- Stars: white dwarf;
- Photometry: SDSS