The origin of the X-ray emission from the enigmatic multiple system HBC 515
Abstract
HBC 515 is a recently discovered, intriguing, multiple pre-main sequence system located in the L1622 molecular cloud and, with an X-ray luminosity of Lx 10^{32} erg/s, it is one of the brightest X-ray sources in Orion. HBC 515 is composed of a very young (age<1 Myr) intermediate-mass ( 2 M_sun) binary, whose circumstellar disk has already dispersed and a class I/II object surrounded by a thick envelope of gas and dust. It is not clear what physical mechanism has triggered the fast disk dispersal. There are two possibilities: dynamical interaction between the components of the multiple system, or photoevaporation due to its X-ray emission. We propose a 30 ks ACIS-I observation of HBC 515 to pinpoint the sources of its X-ray emission and, thereby, distinguish between these alternatives.
- Publication:
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Chandra Proposal
- Pub Date:
- September 2010
- Bibcode:
- 2010cxo..prop.3062S