2023Sci...381..761S

Query : 2023Sci...381..761S

2023Sci...381..761S - Science, 381, 761-765 (2023/August-0)

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

SHENAR T., WADE G.A., MARCHANT P., BAGNULO S., BODENSTEINER J., BOWMAN D.M., GILKIS A., LANGER N., CHENE A.-N., OSKINOVA L., VAN REETH T., SANA H., ST-LOUIS N., DE OLIVEIRA A.S., TODT H. and TOONEN S.

Abstract (from CDS):

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.

Abstract Copyright: © 2023 American Association for the Advancement of Science. All rights reserved. AAAS is a partner of HINARI, AGORA, OARE, CHORUS, CLOCKSS, CrossRef and COUNTER.

Journal keyword(s):

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
2 HD 45166 WR* 06 26 19.1551917864 +07 58 28.063354980 9.05 9.81 9.88     WRpec+B8V 101 1

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