XMM-Newton Probes the Solar Past: Coronal Abundances of Solar Analogs at Different Ages

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We present an X-ray spectral analysis of four solar analogs with different ages and magnetic activity levels. We find largely different coronal compositions. The most active stars tend to show an ``Inverse First Ionization Potential'' (IFIP) effect, i.e., elements with low FIP are underabundant. Less active stars tend to the opposite effect, with relative overabundances of low-FIP elements. Equivalent Chandra results are presented that support these results.
to appear in 35th ESLAB Symposium "Stellar Coronae in the Chandra and XMM-Newton Era", eds. F. Favata & J.J. Drake (San Francisco: ASP), in press

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Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/3337

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/0109265
 http://arxiv.org/abs/astro-ph/0109265

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arXiv