X-ray rotational modulation of a supersaturated star in IC 2391

Details X-ray rotational modulation of a supersaturated star in IC 2391 X-ray rotational modulation of a supersaturated star in IC 2391

2003-07-09

arxiv.org/abs/astro-ph/0307170v1

Astron.Astrophys.407:L63-L66,2003

Astronomy and Astrophysics

Astrophysics

4 pages with 4 PostScript figures. Accepted for publication in Astronomy & Astrophysics Letters

Scientific paper

10.1051/0004-6361:20031053

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 rotational modulation implies the presence of structural inhomogeneities. Possible interpretations are presented and discussed.

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