XMM-Newton observations of NGC 2547: Probing magnetic dynamos at 35Myr

Details XMM-Newton observations of NGC 2547: Probing magnetic dynamos at 35Myr XMM-Newton observations of NGC 2547: Probing magnetic dynamos at 35Myr

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop...60j&link_type=abstract

XMM-Newton Proposal ID #05017901

Computer Science

Stars, White Dwarfs, Solar System, Ngc 2547, Xmm-Newton Proposal 05017901

Scientific paper

We propose a deep EPIC survey of the open cluster NGC2547 to probe magnetic dynamos and thoroughly characterise coronal emission from low-mass pre-main sequence (PMS) stars at an accurately known age of 35Myr. By comparing the X-ray properties (luminosities, temperatures, flare rates) of about 150 coeval PMS stars in NGC 2547 at masses above and below the fully convective boundary (down to substellar masses) and, by contrasting their coronal properties with stars in younger and older clusters, we will test ideas that PMS magnetic activity is driven by a different dynamo to that in older stars. Such observations are crucial in establishing the intensity and duration of high energy irradiation of the circumstellar environments of young stars.

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