Hubble Space Telescope and optical observations of three pulsating accreting white dwarfs in cataclysmic variables

被引：29
|
作者：
Szkody, Paula [1 ]
Mukadam, Anjum
Gansicke, Boris T.
Woudt, Patrick A.
Solheim, Jan-Erik
Nitta, Atsuko
Sion, Edward M.
Warner, Brian
Sahu, D. K.
Prabhu, T.
Henden, Arne
机构：
[1] Univ Washington, Dept Astron, Seattle, WA 98195 USA
[2] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
[3] Univ Cape Town, Dept Astron, ZA-7700 Rondebosch, South Africa
[4] Inst Theoret Astrophys, N-0315 Oslo, Norway
[5] Gemini Observ, Hilo, HI 96720 USA
[6] Subaru Telescope, Hilo, HI 96720 USA
[7] Villanova Univ, Dept Astron & Astrophys, Villanova, PA 19085 USA
[8] Indian Inst Astrophys, Bangalore 560034, Karnataka, India
[9] Amer Assoc Variable Star Observers, Cambridge, MA 02138 USA
来源：
ASTROPHYSICAL JOURNAL | 2007年 / 658卷 / 02期
关键词：
novae; cataclysmic variables; stars : individual (SDSS J013132.39-090122.3; SDSS J161033.64-010223.3; SDSS J220553.98+115553.7); stars : oscillations; ultraviolet : stars;
D O I：
10.1086/511854
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Ultraviolet observations using the Solar Blind Channel on the Hubble Space Telescope provide light curves and low-resolution spectra of three pulsating white dwarfs in the cataclysmic variables SDSS J013132.39-090122.3, SDSS J161033.64-010223.3, and SDSS J220553.98+115553.7. The UV light curves show enhanced pulsation amplitudes over those from simultaneous and previous optical photometry, while the UV-optical spectra are fit with white dwarf temperatures near 15,000 K. These temperatures place the accreting white dwarfs outside the instability zone for noninteracting DAV white dwarfs and show that the instability strip is complex for accreting white dwarfs.
引用
收藏
页码：1188 / 1195
页数：8
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