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When do stars go boom?
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Richer, Harvey B., Cohen, Roger E., Heyl, Jeremy, Kalirai, Jason, Caiazzo, Ilaria, Correnti, Matteo, Cummings, Jeffrey, Goudfrooij, Paul, Hansen, Bradley M. S., Peeples, Molly, Sabbi, Elena, Tremblay, Pier-Emmanuel and Williams, Benjamin (2022) When do stars go boom? The Astrophysical Journal Letters, 931 (2). L20. doi:10.3847/2041-8213/ac6585 ISSN 2041-8205.
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Official URL: http://dx.doi.org/10.3847/2041-8213/ac6585
Abstract
The maximum mass of a star that can produce a white dwarf (WD) is an important astrophysical quantity. One of the best approaches to establishing this limit is to search for WDs in young star clusters in which only massive stars have had time to evolve and where the mass of the progenitor can be established from the cooling time of the WD together with the age of the cluster. Searches in young Milky Way clusters have not thus far yielded WD members more massive than about 1.1 M⊙, well below the Chandrasekhar mass of 1.38 M⊙, nor progenitors with masses in excess of about 6 M⊙. However, the hunt for potentially massive WDs that escaped their cluster environs is yielding interesting candidates. To expand the cluster sample further, we used HST to survey four young and massive star clusters in the Magellanic Clouds for bright WDs that could have evolved from stars as massive as 10 M⊙. We located five potential WD candidates in the oldest of the four clusters examined, the first extragalactic single WDs thus far discovered. As these hot WDs are very faint at optical wavelengths, final confirmation will likely have to await spectroscopy with 30 m class telescopes.
| Item Type: | Journal Article | |||||||||||||||
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| Subjects: | Q Science > QB Astronomy | |||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||
| Library of Congress Subject Headings (LCSH): | White dwarf stars, Stars, Stars -- Clusters, Quantum theory, Stars -- Evolution | |||||||||||||||
| Journal or Publication Title: | The Astrophysical Journal Letters | |||||||||||||||
| Publisher: | Institute of Physics Publishing, Inc. | |||||||||||||||
| ISSN: | 2041-8205 | |||||||||||||||
| Official Date: | 30 May 2022 | |||||||||||||||
| Dates: |
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| Volume: | 931 | |||||||||||||||
| Number: | 2 | |||||||||||||||
| Number of Pages: | 8 | |||||||||||||||
| Article Number: | L20 | |||||||||||||||
| DOI: | 10.3847/2041-8213/ac6585 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | Published | |||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
| Date of first compliant deposit: | 5 July 2022 | |||||||||||||||
| Date of first compliant Open Access: | 6 July 2022 | |||||||||||||||
| RIOXX Funder/Project Grant: |
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