2020MNRAS.492L...1W

Query : 2020MNRAS.492L...1W

2020MNRAS.492L...1W - Mon. Not. R. Astron. Soc., 492, L1 (2020/February-2)

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

WADE G.A., BAGNULO S., KESZTHELYI Z., FOLSOM C.P., ALECIAN E., CASTRO N., DAVID-URAZ A., FOSSATI L., PETIT V., SHULTZ M.E. and SIKORA J.

Abstract (from CDS):

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.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Stars: binaries - Stars : rotation - Stars: massive - Instrumentation : spectropolarimetry - Stars: magnetic fields

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 HD 54879 SB* 07 10 08.1487629504 -11 48 09.838940004 6.8 7.60 7.65     O9.7V 98 0
2 CPD-57 3509 * 10 35 48.9972741480 -58 14 54.297364704 10.16 10.82 10.70 10.59 10.49 B2III 43 0

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