Activity and Rotation in the Zero Age Main Sequence cluster h Per

Details Activity and Rotation in the Zero Age Main Sequence cluster h Per Activity and Rotation in the Zero Age Main Sequence cluster h Per

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2525m&link_type=abstract

Chandra proposal ID #10200260

Physics

Scientific paper

We will explore the relation between the X-ray luminosity and rotational period in the young open cluster h Per. The age of this cluster (13 Myr) is crucial for the subsequent evolution of the stellar activity and rotation, being at the transition between the PMS and the ZAMS, when a star has reached its maximum rotational velocity. At that age both fast and slow rotators may co-exist, each group having dynamos and coronae following different regimes. h Per with its age and richness is an ideal target for these studies, hosting a very rich sample of coeval stars. We will also take advantage of the rotational periods recently derived with the program Monitor that is able to determine also relatively long rotational periods, allowing us to study at the same time slow and fast rotators.

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