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Resource Record Summary

Catalog Service:
Census of blue stars in SDSS DR8

Short name: J/ApJS/215/24
IVOA Identifier: ivo://CDS.VizieR/J/ApJS/215/24
DOI (Digital Object Identifier): 10.26093/cds/vizier.22150024
Publisher: CDS[+][Pub. ID]
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/ApJS/215/24
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2015 Feb 27 09:38:29Z
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Description


We present a census of the 12060 spectra of blue objects ((g-r)_0_<-0.25) in the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8). As part of the data release, all of the spectra were cross-correlated with 48 template spectra of stars, galaxies, and QSOs to determine the best match. We compared the blue spectra by eye to the templates assigned in SDSS DR8. 10856 of the objects matched their assigned template, 170 could not be classified due to low signal-to-noise ratio, and 1034 were given new classifications. We identify 7458 DA white dwarfs, 1145 DB white dwarfs, 273 rarer white dwarfs (including carbon, DZ, DQ, and magnetic), 294 subdwarf O stars, 648 subdwarf B stars, 679 blue horizontal branch stars, 1026 blue stragglers, 13 cataclysmic variables, 129 white dwarf-M dwarf binaries, 36 objects with spectra similar to DO white dwarfs, 179, quasi-stellar objects (QSOs), and 10 galaxies. We provide two tables of these objects, sample spectra that match the templates, figures showing all of the spectra that were grouped by eye, and diagnostic plots that show the positions, colors, apparent magnitudes, proper motions, etc., for each classification.

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