Detailed Information on Publication Record
2017
A New Stellar Outburst Associated with the Magnetic Activities of the K-type Dwarf in a White Dwarf Binary
QIAN, Shengbang, Z.T. HAN, B. ZHANG, Miloslav ZEJDA, Raul MICHEL et. al.Basic information
Original name
A New Stellar Outburst Associated with the Magnetic Activities of the K-type Dwarf in a White Dwarf Binary
Authors
QIAN, Shengbang (156 China), Z.T. HAN (156 China), B. ZHANG (156 China), Miloslav ZEJDA (203 Czech Republic, guarantor, belonging to the institution), Raul MICHEL (484 Mexico), Liying ZHU (156 China), Ergang ZHAO (156 China), Wenping LIAO (156 China), X.M. TIAN (156 China) and Z.H. WANG (156 China)
Edition
Astrophysical Journal, Bristol, England, IOP PUBLISHING LTD, 2017, 0004-637X
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 5.551
RIV identification code
RIV/00216224:14310/17:00095345
Organization unit
Faculty of Science
UT WoS
000413701200004
Keywords in English
binaries: close; binaries: eclipsing; stars: individuals (1SWASPJ162117.36 441254.2); stars: winds outflows; starspots; white dwarfs
Tags
International impact, Reviewed
Změněno: 27/3/2018 14:33, Ing. Nicole Zrilić
Abstract
V originále
1SWASP J162117.36+441254.2 was originally classified as an EW-type binary with a period of 0.20785 days. However, it was detected to have undergone a stellar outburst on 2016 June 3. Although the system was later classified as a cataclysmic variable (CV) and the event was attributed as a dwarf nova outburst, the physical reason is still unknown. This binary has been monitored photometrically since 2016 April 19, and many light curves were obtained before, during, and after the outburst. Those light and color curves observed before the outburst indicate that the system is a special CV. The white dwarf is not accreting material from the secondary and there are no accretion disks surrounding the white dwarf. By comparing the light curves obtained from 2016 April 19 to those from September 14, it was found that magnetic activity of the secondary is associated with the outburst. We show strong evidence that the L-1 region on the secondary was heavily spotted before and after the outburst and thus quench the mass transfer, while the outburst is produced by a sudden mass accretion of the white dwarf. These results suggest that J162117 is a good astrophysical laboratory to study stellar magnetic activity and its influences on CV mass transfer and mass accretion.
Links
| GA16-01116S, research and development project |
|