Radio and X-Ray Emissions from Chemically Peculiar B- and A-Type Stars: Observations and a Model
1993 ◽
Vol 138
◽
pp. 507-516
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Keyword(s):
X Ray
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AbstractConventional wisdom holds that early-type and late-type stars have very different outer atmospheres, because the early-type stars lack deep convective zones. I argue that the magnetic chemically peculiar (CP) stars hotter than about spectral type A2 display many of the activity phenomena seen in the most active late-type stars. In particular, many CP stars are luminous nonthermal radio and coronal x-ray sources like the RS CVn systems. A wind-fed magnetosphere model has been proposed to explain both the nonthermal radio and the x-ray emission. In this model the stellar wind plays the role of a mechanical energy source analogous to the role played by convection in the active late-type stars.
2005 ◽
Vol 160
(2)
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pp. 557-581
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1994 ◽
Vol 162
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pp. 498-499
1986 ◽
Vol 116
◽
pp. 113-116
Keyword(s):