Projects per year
Abstract
Many white dwarf stars show signs of having accreted smaller bodies, implying that they may host planetary systems. A small number of these systems contain gaseous debris discs, visible through emission lines. We report a stable 123.4-minute periodic variation in the strength and shape of the Ca II emission line profiles originating from the debris disc around the white dwarf SDSS J122859.93+104032.9. We interpret this short-period signal as the signature of a solid-body planetesimal held together by its internal strength.
Original language | English |
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Pages (from-to) | 66-69 |
Number of pages | 4 |
Journal | Science |
Volume | 364 |
Issue number | 6435 |
DOIs | |
Publication status | Published - 2019 Apr 5 |
Subject classification (UKÄ)
- Astronomy, Astrophysics and Cosmology
Free keywords
- Astronomy
- Planetary Sciences
- Astrophysics - Earth and Planetary Astrophysics
- Astrophysics - Solar and Stellar Astrophysics
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Dive into the research topics of 'A planetesimal orbiting within the debris disc around a white dwarf star'. Together they form a unique fingerprint.Projects
- 2 Finished
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A unified picture of white dwarf planetary systems
Mustill, A. (PI)
2018/01/01 → 2022/12/31
Project: Research
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IMPACT: IMPACT: Comets, asteroids and the habitability of planets
Davies, M. B. (PI), Johansen, A. (CoI) & Birger, S. (CoI)
Knut and Alice Wallenberg Foundation
2015/07/01 → 2020/06/30
Project: Research