A DEEPLY ECLIPSING DETACHED DOUBLE HELIUM WHITE DWARF BINARY

Parsons, S. G.

doi:10.1088/2041-8205/735/2/L30

2011-06-17

DOI：10.1088/2041-8205/735/2/L30

原文链接

查看原文

摘要

En 中文

Using Liverpool Telescope+RISE photometry we identify the 2.78 hr period binary star CSS 41177 as a detached eclipsing double white dwarf binary with a 21,100 K primary star and a 10,500 K secondary star. This makes CSS 41177 only the second known eclipsing double white dwarf binary after NLTT 11748. The 2 minute long primary eclipse is 40% deep and the secondary eclipse 10% deep. From Gemini+GMOS spectroscopy, we measure the radial velocities of both components of the binary from the Ha absorption line cores. These measurements, combined with the light curve information, yield white dwarf masses of M-1 = 0.283 +/- 0.064 M-circle dot and M-2 = 0.274 +/- 0.034 M-circle dot, making them both helium core white dwarfs. As an eclipsing, double-lined spectroscopic binary, CSS 41177 is ideally suited to measuring precise, model-independent masses and radii. The two white dwarfs will merge in roughly 1.1 Gyr to form a single sdB star.

Keyword:

binaries: eclipsing

stars: individual (CSS 41177)

white dwarfs

AI总结

对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。

期刊

Astrophysical Journal Letters

IF:

11.7

论文数:

1.2W

被引数:

5.9W

机构

California Institute of Technology

学者数:

2.9W

论文数: 2.5W

被引数: 4.9W

university of kiel

学者数:

2.3W

论文数: 1.8W

被引数: 15

University of Warwick

学者数:

2.2W

论文数: 2.2W

被引数: 85

查看更多机构

引用论文

DISCOVERY OF THE ECLIPSING DETACHED DOUBLE WHITE DWARF BINARY NLTT 11748

ASTROPHYSICAL JOURNAL LETTERS

IF11.7

2010-05-28

OAAI

Steinfadt, Justin D. R.; Kaplan, David L.; Shporer, Avi; Bildsten, Lars; Howell, Steve B.

Physiological Techniques for Assessing the Impact of Oil on Seabirds

Avian and Mammalian Wildlife Toxicology

IF0

1979-01-01

PREAI

DB Peakall; DS Miller; WB Kinter

Double white dwarfs and LISA

CLASSICAL AND QUANTUM GRAVITY

IF3.7

2011-04-19

OAAI

Marsh, T. R.

Porous polymer microneedles with interconnecting microchannels for rapid fluid transport

RSC Advances

IF0

2016-01-01

PREAI

Liming Liu; Hiroyuki Kai; Kuniaki Nagamine; Yudai Ogawa; Matsuhiko Nishizawa

Dynamic behaviour and stability of marine propulsion systems

Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment

IF0

2007-12-01

PREAI

M Figari; M Altosole

The Gemini-North multi-object spectrograph: Performance in imaging, long-slit, and multi-object spectroscopic modes

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC

IF7.7

2004-05-01

749

OAAI

Hook, IM; Jorgensen, I; Allington-Smith, JR; Davies, RL; Metcalfe, N; Murowinski, RG; Crampton, D

Tackling the issue of rural–urban water transfers in the Ta’iz region, Yemen

Natural Resources Forum

IF0

2002-12-17

PREAI

Khalid Riaz

Physical and spectral properties of 2-aryl-1,3-dioxolanes and heteroatomic analogs

Journal of Chemical & Engineering Data

IF0

2002-05-01

PREAI

Norman Indictor; Joseph W. Horodniak; Howard Jaffe; David Miller

ULTRACAM: an ultrafast, triple-beam CCD camera for high-speed astrophysics

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

IF4.8

2007-06-06

284

OAAI

Dhillon, V. S.; Marsh, T. R.; Stevenson, M. J.; Atkinson, D. C.; Kerry, P.; Peacocke, P. T.; Vick, A. J. A.; Beard, S. M.; Ives, D. J.; Lunney, D. W.; McLay, S. A.; Tierney, C. J.; Kelly, J.; Littlefair, S. P.; Nicholson, R.; Pashley, R.; Harlaftis, E. T.; O'Brien, K.

Efficient identification of exoplanetary transit candidates from SuperWASP light curves

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

IF4.8

2007-08-20

256

OAAI

Cameron, A. Collier; Wilson, D. M.; West, R. G.; Hebb, L.; Wang, X-B.; Aigrain, S.; Bouchy, F.; Christian, D. J.; Clarkson, W. I.; Enoch, B.; Esposito, M.; Guenther, E.; Haswell, C. A.; Hebrard, G.; Hellier, C.; Horne, K.; Irwin, J.; Kane, S. R.; Loeillet, B.; Lister, T. A.; Maxted, P.; Mayor, M.; Moutou, C.; Parley, N.; Pollacco, D.; Pont, F.; Queloz, D.; Ryans, R.; Skillen, I.; Street, R. A.; Udry, S.; Wheatley, P. J.

查看更多内容