Burn Out or Fade Away? Probing the X-ray Death of Intermediate Mass Stars

Details Burn Out or Fade Away? Probing the X-ray Death of Intermediate Mass Stars Burn Out or Fade Away? Probing the X-ray Death of Intermediate Mass Stars

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cxo..prop.2095d&link_type=abstract

Chandra Proposal ID #08200110

Computer Science

Chandra Proposal Id #08200110

Scientific paper

We propose HRC-I snapshots of the very young early A-type stars HR4796A (8 Myr) and beta Pic (~20 Myr) to search for remnant X-ray activity from the Herbig Ae phase. Both stars have dusty disks and are in the epoch of planet formation. They are the youngest A-type main-sequence stars for which accurate ages have been determined, are devoid of stellar companions and are the best available candidates to probe the mystery of how early A stars decline in X-ray luminosity at least 100,000 fold from 10^31 erg/s to L_X < 10^26 erg/s in a few million years. The results will be important for understanding the formation of stars and planets at intermediate stellar masses, and the evolution of their high energy environments and magnetic activity.

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