The Library
A pulsating white dwarf in an eclipsing binary
Tools
Tools
Tools
Parsons, Steven G., Brown, Alexander J., Littlefair, Stuart P., Dhillon, Vikram S., Marsh, T. R., Hermes, J. J., Istrate, Alina G., Breedt, Elmé, Dyer, Martin J., Green, Matthew J. and Sahman, David I. (2020) A pulsating white dwarf in an eclipsing binary. Nature Astronomy, 4 (7). pp. 690-696. doi:10.1038/s41550-020-1037-z ISSN 2397-3366.
|
PDF
WRAP-pulsating-white-dwarf-eclipsing-binary-Marsh-2020.pdf - Accepted Version - Requires a PDF viewer. Download (5Mb) | Preview |
Official URL: https://doi.org/10.1038/s41550-020-1037-z
Abstract
White dwarfs are the burnt-out cores of Sun-like stars and are the fate of 97 per cent of the stars in our Galaxy. The internal structure and composition of white dwarfs are hidden by their high gravities, which causes all elements apart from the lightest ones to settle out of their atmospheres. The most direct method of probing the inner structure of stars and white dwarfs in detail is via asteroseismology. Here we present a pulsating white dwarf in an eclipsing binary system, enabling us to place extremely precise constraints on the mass and radius of the white dwarf from the lightcurve, independent of the pulsations. This 0.325-solar-mass white dwarf—one member of the SDSS J115219.99+024814.4 system—will serve as a powerful benchmark with which to constrain empirically the core composition of low-mass stellar remnants and to investigate the effects of close binary evolution on the internal structure of white dwarfs.
| Item Type: | Journal Article | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | White dwarf stars , Astroseismology, Eclipsing binaries , Low mass stars | ||||||||||||||||||
| Journal or Publication Title: | Nature Astronomy | ||||||||||||||||||
| Publisher: | Nature Publishing Group | ||||||||||||||||||
| ISSN: | 2397-3366 | ||||||||||||||||||
| Official Date: | July 2020 | ||||||||||||||||||
| Dates: |
|
||||||||||||||||||
| Volume: | 4 | ||||||||||||||||||
| Number: | 7 | ||||||||||||||||||
| Page Range: | pp. 690-696 | ||||||||||||||||||
| DOI: | 10.1038/s41550-020-1037-z | ||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||
| Date of first compliant deposit: | 24 November 2020 | ||||||||||||||||||
| Date of first compliant Open Access: | 24 November 2020 | ||||||||||||||||||
| RIOXX Funder/Project Grant: |
|
||||||||||||||||||
| Open Access Version: |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
