Detection of photospheric calcium in a DBA white dwarf

Journal Article · Sun May 01 04:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/185161· OSTI ID:6935333

Kenyon, S J; Shipman, H L; Sion, E M; Aannestad, P A

The detection of photospheric calcium absorption lines in the white dwarf star G200-39 (DBAZ4) is reported. The abundance of calcium relative to that of hydrogen is approximately solar, a result which lends support to the hypothesis that accretion of interstellar matter is responsible for hybrid composition white dwarfs. 21 references.

• Research Organization: Smithsonian Astrophysical Observatory, Cambridge, MA (USA); Delaware Univ., Newark (USA); Villanova Univ., PA (USA); Arizona State Univ., Tempe (USA)
• OSTI ID: 6935333
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 328; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
ABUNDANCE
ALKALINE EARTH METALS
ATMOSPHERES
CALCIUM
CHEMICAL COMPOSITION
DWARF STARS
ELEMENTS
HYDROGEN
METALS
NONMETALS
SPECTRA
STAR ACCRETION
STAR EVOLUTION
STARS
STELLAR ATMOSPHERES
WHITE DWARF STARS