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- W1619464511 abstract "We present first results from a deep (130 ks) XMM‐Newton observation of Altair and study the coronal X‐ray properties of a late A‐type star for the first time in detail. We find that Altair’s thin outer convective layer and its fast rotation generate a corona that resembles those of low activity stars of later spectral type. Cool plasma at low density produces weak X‐ray emission that shows moderate variability on timescales of hours to days. We find a neon to oxygen abundance ratio of Ne/O ∼0.2, similar to other inactive stars and the Sun." @default.
- W1619464511 created "2016-06-24" @default.
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- W1619464511 date "2009-01-01" @default.
- W1619464511 modified "2023-09-25" @default.
- W1619464511 title "Altair—the hottest ‘cool’ star in X-rays" @default.
- W1619464511 doi "https://doi.org/10.1063/1.3099190" @default.
- W1619464511 hasPublicationYear "2009" @default.
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