The magnetic, spectroscopic, and photometric variability of the Wolf-Rayet star WR55

被引：0

作者：

Jaervinen, S. P. ^{[1
]}

Hubrig, S. ^{[1
]}

Jayaraman, R. ^{[2
,3
]}

Cikota, A. ^{[4
]}

Schoeller, M. ^{[5
]}

机构：

[1] Leibniz Inst Astrophys AIP, Sternwarte 16, D-14482 Potsdam, Germany

[2] MIT, Kavli Inst, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[3] MIT, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[4] NSFs NOIRLab, Gemini Observ, Casilla 603, La Serena, Chile

[5] European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 524卷 / 01期

关键词：

techniques: photometric; techniques: polarimetric; techniques: spectroscopic; stars: individual: WR55; stars: magnetic fields; stars: Wolf-Rayet; COROTATING INTERACTION REGIONS; GALACTIC WN STARS; MASSIVE STARS; ROAP STARS; FIELDS; EVOLUTION; SEARCH; ORIGIN; FORS-1; II;

D O I：

10.1093/mnrasl/slad068

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Studies of magnetic fields in the most evolved massive stars, the Wolf-Rayet stars, are of special importance because they are progenitors of certain types of supernovae. The first detection of a magnetic field of the order of a few hundred gauss in the WN7 star WR55, based on a few FORS2 low-resolution spectropolarimetric observations, was reported in 2020. In this work, we present new FORS2 observations allowing us to detect magnetic and spectroscopic variability with a period of 11.90h. No significant frequencies were detected in TESS and ASAS-SN photometric observations. Importantly, magnetic field detections are achieved currently only in two Wolf-Rayet stars, WR6 and WR55, both showing the presence of corotating interacting regions.

引用

页码：L21 / L25

页数：5

共 50 条

[21] PHOTOMETRIC VARIABILITY OF A COMPLETE SAMPLE OF NORTHERN WOLF-RAYET STARS
MOFFAT, AFJ
SHARA, MM
ASTRONOMICAL JOURNAL, 1986, 92 (04): : 952 - 975
[22] WR 143: a Wolf-Rayet binary
Varricatt, WP
Ashok, NM
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2006, 365 (01) : 127 - 133
[23] Optical spectroscopic variability of possible Wolf-Rayet binaries
Flores, A
Cardona, O
Koenigsberger, G
WOLF-RAYET PHENOMENA IN MASSIVE STARS AND STARBURST GALAXIES, 1999, (193): : 65 - 66
[24] Blobs in Wolf-Rayet winds: Random photometric and polarimetric variability
Rodrigues, CV
Magalhaes, AM
ASTROPHYSICAL JOURNAL, 2000, 540 (01): : 412 - 421
[25] PHOTOMETRIC VARIABILITY STUDY OF WOLF-RAYET BINARIES IN THE MAGELLANIC CLOUDS
SEGGEWISS, W
MOFFAT, AFJ
LAMONTAGNE, R
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1991, 89 (01): : 105 - 119
[26] INTERSTELLAR MATTER AROUND THE WOLF-RAYET STAR WR-125
ARNAL, EM
MIRABEL, IF
ASTRONOMY & ASTROPHYSICS, 1991, 250 (01) : 171 - 178
[27] ANALYSIS OF THE LIGHT VARIATIONS OF THE WOLF-RAYET STAR WR16
GOSSET, E
VREUX, JM
MANFROID, J
REMY, M
STERKEN, C
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1990, 84 (02): : 377 - 396
[28] The infrared and molecular environment surrounding the Wolf-Rayet star WR 130
Cichowolski, S.
Suad, L. A.
Pineault, S.
Noriega-Crespo, A.
Arnal, E. M.
Flagey, N.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 450 (04) : 3458 - 3471
[29] Oscillations in the massive Wolf-Rayet star WR 123 with the MOST satellite
Lefèvre, L
Marchenko, SV
Moffat, AFJ
Chené, AN
Smith, SR
St-Louis, N
Matthews, JM
Kuschnig, R
Guenther, DB
Poteet, CA
Rucinski, SM
Sasselov, D
Walker, GAH
Weiss, WW
ASTROPHYSICAL JOURNAL, 2005, 634 (01): : L109 - L112
[30] COMPLEX STRUCTURE ASSOCIATED WITH THE WOLF-RAYET STAR-WR147
DAVIS, RJ
ASTROPHYSICS AND SPACE SCIENCE, 1994, 216 (1-2) : 67 - 68

← 1 2 3 4 5 →