Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· On-line Data
· References in the article
· Citations to the Article (2) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (13)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The Kepler Light Curve of the Unique DA White Dwarf BOKS 53856
Authors:
Holberg, J. B.; Howell, Steve B.
Affiliation:
AA(Lunar and Planetary Laboratory, 1541 E. University Blvd, Sonett Space Sciences Building, University of Arizona, Tucson, AZ 85721, USA ), AB(National Optical Astronomy Observatory, 950 N. Cherry Ave, Tucson, AZ 85719, USA )
Publication:
The Astronomical Journal, Volume 142, Issue 2, article id. 62, 6 pp. (2011). (AJ Homepage)
Publication Date:
08/2011
Origin:
IOP
Astronomy Keywords:
stars: individual: BOKS 53856, techniques: photometric, white dwarfs
DOI:
10.1088/0004-6256/142/2/62
Bibliographic Code:
2011AJ....142...62H

Abstract

The faint (g = 16.9) hot white dwarf BOKS 53856 was observed by the Kepler Mission in short cadence mode during mid-2009. Analysis of these observations reveals a highly stable modulation with a period of 6.1375 hr and a 2.46% half-amplitude. The folded light curve has an unusual shape that is difficult to explain in terms of a binary system containing an unseen companion more luminous than an L0 brown dwarf. Optical spectra of BOKS 53856 show a T eff = 34,000 K, log g = 8.0 DA white dwarf. There are few, if any, known white dwarfs in this temperature range exhibiting photometric variations similar to those we describe. A magnetic spin-modulated white dwarf model can in principle explain the light curve, an interpretation supported by spectral observations of the Halpha line showing evidence of Zeeman splitting.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints