Slingshot prominences: a hidden mass loss mechanism
Slingshot prominences: a hidden mass loss mechanism
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弹弓日珥:隐藏的质量损失机制
DOI:
10.1093/mnras/stab1709
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发表时间:
2021
影响因子:
4.8
通讯作者:
Waugh R
中科院分区:
文献类型:
--
作者:
Waugh R
Whilst ‘slingshot’ prominences have been observed on M-dwarfs, most if not all theoretical studies have focused on solar-like stars. We present an investigation into stellar prominences around rapidly rotating young M-dwarfs. We have extrapolated the magnetic field in the corona from Zeeman-Doppler maps and determined the sites of mechanical stability where prominences may form. We analyse the prominence mass that could be supported and the latitude range over which this material is distributed. We find that for these maps, much of this prominence mass may be invisible to observation – typically <1 per cent transits the stellar disc. On the rapidly rotating M-dwarf V374 Peg (Prot= 0.45 d) where prominences have been observed, we find the visible prominence mass to be around only 10 per cent of the total mass supported. The mass loss rate per unit area for prominences scales with the X-ray surface flux asthat is very close to the observationally derived value for stellar winds. This suggests that prominence ejection may contribute significantly to the overall stellar wind loss and spin-down. A planet in an equatorial orbit in the habitable zone of these stars may experience intermittent enhancements of the stellar wind due to prominence ejections. On some stars, this may occur throughout 20 per cent of the orbit.
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DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
J. Stauffer;A. Cameron;M. Jardine;T. David;L. Rebull;A. Cody;L. Hillenbrand;D. Barrado;S. Wolk;J. Davenport;M. Pinsonneault
通讯作者:
M. Pinsonneault
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
J. Ferreira
通讯作者:
J. Ferreira
影响因子:
6.5
作者:
S. Saikia;T. Lueftinger;S. Jeffers;C. Folsom;V. See;P. Petit;S. Marsden;A. Vidotto;J. Morin;A. Reiners;M. Guedel;the Bcool Collaboration
通讯作者:
the Bcool Collaboration
DOI:
10.1086/432716
发表时间:
2005
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
B. Wood;H. Mueller;G. Zank;J. Linsky;S. Redfield
通讯作者:
S. Redfield
影响因子:
4.8
作者:
R. Jeffries
通讯作者:
R. Jeffries