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
收藏
页码：L21 / L25
页数：5
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