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Oxford University Press (OUP), Monthly Notices of the Royal Astronomical Society: Letters, 2019

DOI: 10.1093/mnrasl/slz174

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No evidence of a sudden change of spectral appearance or magnetic field strength of the O9.7V star HD 54879

Journal article published in 2019 by G. A. Wade, S. Bagnulo ORCID, Z. Keszthelyi, C. P. Folsom, E. Alecian, N. Castro ORCID, A. David-Uraz ORCID, L. Fossati, V. Petit ORCID, M. E. Shultz, J. Sikora
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Abstract It was recently claimed that the magnetic O-type star HD 54879 exhibits important radial velocity variability indicative of its presence in a spectroscopic binary. More remarkably, it was furthermore reported that the star underwent a short, sudden variation in spectral type and magnetic field. In this Letter we examine new Narval and ESPaDOnS data of this star in addition to the previously-published FORS2 data and conclude that both the reported velocity variations and the sudden spectral and magnetic changes are spurious.

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