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2015

Refining our knowledge of the white dwarf mass-radius relation

Barstow, M. A., Bond, H. E., Burleigh, M. R. et al.

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The presence of a white dwarf in a resolved binary system, such as Sirius, provides an opportunity to combine dynamical information about the masses, from astrometry and spectroscopy, with a gravitational red-shift measurement and spectrophotometry of the white dwarf atmosphere to provide a test of theoretical mass-radius relations of unprecedented accuracy.

We demonstrated this with the first Balmer line spectrum of Sirius B to be obtained free of contamination from the primary, with STIS on HST.
However, we also found an unexplained discrepancy between the spectroscopic and gravitational red-shift mass determinations.
With the recovery of STIS, we have been able to revisit our observations of Sirius B with an improved observation strategy designed to reduce systematic errors on the gravitational red-shift measurement.

Refining our knowledge of the white dwarf mass-radius relation · Around

Built on

Wood, M. A., Oswalt, T. D., & Smith, J. A. 1995, in American Astronomical Society Meeting Abstracts, vol. 27 of Bulletin of the American Astronomical Society, 1310
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Barstow, M. A., Holberg, J. B., Cruise, A. M., & Penny, A. J. 1997, MNRAS, 290, 505
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Vauclair, G., Schmidt, H., Koester, D., & Allard, N. 1997, A&A, 325, 1055
1997
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Then

Fontaine, G., Brassard, P., & Bergeron, P. 2001, PASP, 113, 409
2001
Later among the works it cites.
Barstow, M. A., Bond, H. E., Holberg, J. B., Burleigh, M. R., Hubeny, I., & Koester, D. 2005, MNRAS, 362, 1134. astro-ph/0506600
2005
Later among the works it cites.
Holberg, J. B., Casewell, S. L., Bond, H. E., Burleigh, M. R., & Barstow, M. A. 2014, MNRAS, 444, 2022. 1407.4332
2022
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