A subsample of white dwarfs among the fbs blue stellar objects

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Surveys, White Dwarfs

Scientific paper

Results are reported from studies of a subsample of white dwarfs in the second part of the FBS survey. Of the 217 WD identified in the FBS, most are DA dwarfs, but the subclasses DO, DOB, DB, DAB, DAZ, DZ, and DC are also encountered. Multiwavelength studies are conducted on the sample from the FBS survey: of the 217 white dwarfs, 178 coincide with 2MASS sources, GALEX (ultraviolet) data exist for 155, 23 are ROSAT x-ray sources, and SDSS data with stellar magnitudes in five photometric bands, u, g, r, i, and z, are available for 120. The WD sample from the FBS survey is compared with similar surveys (PG and SDSS). Average B and R magnitudes, as well as an average value of the length of the low dispersion spectra of white dwarfs from the DFBS are also given.

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