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Title:
An atlas of optical spectra of DZ white dwarfs and related objects
Authors:
Sion, Edward M.; Kenyon, Scott J.; Aannestad, Per A.
Affiliation:
AA(Villanova University, PA), AB(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AC(Arizona State University, Tempe, AZ)
Publication:
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 72, March 1990, p. 707-714. (ApJS Homepage)
Publication Date:
03/1990
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
STELLAR SPECTRA, VISIBLE SPECTRUM, WHITE DWARF STARS, RADIATIVE TRANSFER, SIGNAL TO NOISE RATIOS, SPECTRAL LINE WIDTH, STELLAR ATMOSPHERES, STELLAR SPECTROPHOTOMETRY
DOI:
10.1086/191429
Bibliographic Code:
1990ApJS...72..707S

Abstract

An atlas of optical spectra and equivalent width measurements for DZ stars and several related objects is described. These data should improve abundance measurements for Ca/He, Mg/He, and Fe/He in these stars and provide tests for calculations of accretion, diffusion, and radiative transfer in white-dwarf atmospheres. Also reported is the possible detection of He I (3888-A) in three DZ white dwarfs, 0246 + 735, 1705 + 030, and 2215 + 388.

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