Spectroscopy of white dwarf candidates from the ESO Imaging Survey (EIS-WIDE)

Citation
D. Koester et B. Wolff, Spectroscopy of white dwarf candidates from the ESO Imaging Survey (EIS-WIDE), ASTRON ASTR, 379(1), 2001, pp. 215-223
Citations number
25
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS
ISSN journal
14320746 → ACNP
Volume
379
Issue
1
Year of publication
2001
Pages
215 - 223
Database
ISI
SICI code
1432-0746(200111)379:1<215:SOWDCF>2.0.ZU;2-J
Abstract
In the ESO Imaging Survey of a 1.27 square degree field in the direction of the south galactic pole ("patch B") 32 point sources were identified as wh ite dwarf candidates in the B - V vs. V - I two-color diagram by the EIS te am and published as a candidate catalog. One of these was a previously know n quasar. We have obtained low resolution spectra of 30 of the remaining so urces. Of these only 6 are DA white dwarfs, one is a DQ white dwarf, one a DC. 11 candidates are quasars with redshifts between 1.4 and 3.3. The remai ning sources are stars with narrow Balmer lines, in most cases probably fie ld horizontal branch stars.