Volume 407, Number 3, September I 2003
|Page(s)||L63 - L66|
|Published online||17 November 2003|
Letter to the Editor
X-ray rotational modulation of a supersaturated star in IC 2391
Dipartimento di Scienze Fisiche e Astronomiche, Sez. di Astronomia, Università di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy
2 INAF - Osservatorio Astronomico di Palermo G.S. Vaiana, Piazza del Parlamento 1, 90134 Palermo, Italy
Corresponding author: A. Marino, firstname.lastname@example.org
Accepted: 8 July 2003
We present evidence of X-ray rotational modulation on VXR45, a young fast rotator star, member of IC 2391. It is a dG9 spectral type star whose rotational period and X-ray luminosity make it a supersaturated star. Our X-ray observation, made with EPIC/PN on XMM-Newton, covers about two photometric rotational periods. The detection of X-ray rotational modulation implies the presence of structural inhomogeneities. Possible interpretations are presented and discussed.
Key words: open clusters and associations / stars: individual: IC 2391 / stars: coronae / stars: late-type / stars: rotation / X-ray: stars
© ESO, 2003
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