XMM-Newton Proposal 02002101

Details XMM-Newton Proposal 02002101 XMM-Newton Proposal 02002101

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop...11p&link_type=abstract

XMM-Newton Proposal ID #02002101

Computer Science

Ngc 6475, Xmm-Newton Proposal 02002101

Scientific paper

We propose to observe the open cluster NGC 6475 (age ~200 Myr) to investigate the activity-rotation-age relationship of low-mass stars emerged from ROSAT observations. We will use XMM observations of the proposed cluster to go a factor of 10 deeper than ROSAT (to detect possible previously unseen low-luminosity populations) and to obtain spectral information on the brightest cluster members. We will compare the X-ray luminosity function of the cluster with the similar age cluster NGC 1039 and with younger and older clusters already observed by us with XMM. This comparison will provide strong constraints on the universality (or lack of) of the activity-rotation-age relationship in the crucial age interval between the Pleiades and the Hyades.

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