A massive helium star with a sufficiently strong magnetic field to form a magnetar-Reference-Cited by-同舟云学术

A massive helium star with a sufficiently strong magnetic field to form a magnetar

Published:2023-08-18 Issue:6659 Volume:381 Page:761-765
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Shenar Tomer¹^ORCID,Wade Gregg A.²,Marchant Pablo³^ORCID,Bagnulo Stefano⁴^ORCID,Bodensteiner Julia³⁵^ORCID,Bowman Dominic M.³^ORCID,Gilkis Avishai⁶^ORCID,Langer Norbert⁷⁸,Nicolas-Chené André⁹^ORCID,Oskinova Lidia¹⁰,Van Reeth Timothy³^ORCID,Sana Hugues³^ORCID,St-Louis Nicole¹¹^ORCID,de Oliveira Alexandre Soares¹²^ORCID,Todt Helge¹⁰^ORCID,Toonen Silvia¹^ORCID

Affiliation:

1. Anton Pannekoek Institute for Astronomy, University of Amsterdam, 1098 XH Amsterdam, Netherlands.

2. Department of Physics and Space Science, Royal Military College of Canada, Kingston K7K7B4, Canada.

3. Institute of Astronomy, Katholieke Universiteit Leuven, 3001 Leuven, Belgium.

4. Armagh Observatory and Planetarium, College Hill, Armagh BT61 9DG, UK.

5. European Southern Observatory, 85748 Garching bei München, Germany.

6. The School of Physics and Astronomy, Tel Aviv University, Tel Aviv 6997801, Israel.

7. Argelander-Institut für Astronomie, Universität Bonn, 53121 Bonn, Germany.

8. Max-Planck-Institut für Radioastronomie, 53121 Bonn, Germany.

9. National Optical-Infrared Astronomy Research Laboratory, National Science Foundation, Hilo, Hawai'i 96720, USA.

10. Institut für Physik und Astronomie, Universität Potsdam, D-14476 Potsdam, Germany.

11. Département de physique, Université de Montréal, Montréal H2V 0B3, Canada.

12. Institute of Research and Development, Universidade do Vale do Paraíba, São José dos Campos 12244-000, Brazil.

Abstract

Magnetars are highly magnetized neutron stars, the formation mechanism of which is unknown. Hot helium-rich stars with spectra dominated by emission lines are known as Wolf-Rayet stars. We observed the binary system HD 45166 using spectropolarimetry and reanalyzed its orbit using archival data. We found that the system contains a Wolf-Rayet star with a mass of 2 solar masses and a magnetic field of 43 kilogauss. Stellar evolution calculations indicate that this component will explode as a supernova, and that its magnetic field is strong enough for the supernova to leave a magnetar remnant. We propose that the magnetized Wolf-Rayet star formed by the merger of two lower-mass helium stars.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Link

https://www.science.org/doi/pdf/10.1126/science.ade3293

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