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26 April 2024 |
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Article overview
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Coronae of Cool Stars | | M. Audard
; S. A. Drake
; M. Güdel
; R. Mewe
; R. Pallavicini
; T. Simon
; K. P. Singh
; S. L. Skinner
; N. E. White
; | | Date: |
1 Oct 2003 | | Subject: | astro-ph | | Affiliation: | 2,3), M. Güdel , R. Mewe , R. Pallavicini , T. Simon , K. P. Singh , S. L. Skinner , N. E. White ( Columbia University, USRA, NASA/GSFC, Paul Scherrer Institut, SRON-Utrecht, Palermo Observatory, University of Hawaii, Tata Institute of Fu | | Abstract: | We present preliminary results of grating observations of YY Mensae and V824 Arae by Chandra and XMM-Newton. Spectral features are presented in the context of the emission measure distributions, the coronal abundances, and plasma electron densities. In particular, we observe a coronal N/C enhancement in YY Men believed to reflect the photospheric composition (CN cycle). Finally, we interpret line broadening in YY Men as Doppler thermal broadening in its very hot corona. | | Source: | arXiv, astro-ph/0310032 | | Services: | Forum | Review | PDF | Favorites | |
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