New white dwarf stars in the Sloan Digital Sky Survey Data Release 10

TL;DR

This paper reports the discovery of over 9,000 new white dwarfs and subdwarfs in SDSS DR10, providing detailed atmospheric parameters and identifying various subclasses, significantly expanding the known white dwarf population.

Contribution

The study presents a large-scale spectroscopic survey of white dwarfs in SDSS DR10, including detailed atmospheric analysis and classification of numerous subclasses, which is a substantial addition to existing white dwarf catalogs.

Findings

Discovered 9,089 new white dwarfs and subdwarfs.

Provided atmospheric parameters for various white dwarf types.

Identified numerous subclasses including magnetic, polluted, and binary white dwarfs.

Abstract

We report the discovery of 9 089 new spectroscopically confirmed white dwarfs and subdwarfs in the Sloan Digital Sky Survey Data Release 10. We obtain Teff, log g and mass for hydrogen atmosphere white dwarf stars (DAs) and helium atmosphere white dwarf stars (DBs), and estimate the calcium/helium abundances for the white dwarf stars with metallic lines (DZs) and carbon/helium for carbon dominated spectra DQs. We found 1 central star of a planetary nebula, 2 new oxygen spectra on helium atmosphere white dwarfs, 71 DQs, 42 hot DO/PG1159s, 171 white dwarf+main sequence star binaries, 206 magnetic DAHs, 327 continuum dominated DCs, 397 metal polluted white dwarfs, 450 helium dominated white dwarfs, 647 subdwarfs and 6888 new hydrogen dominated white dwarf stars.