X-ray properties of young stellar objects (Forbrich+, 2007)

Details X-ray properties of young stellar objects (Forbrich+, 2007) X-ray properties of young stellar objects (Forbrich+, 2007)

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ycat..34750959f&link_type=abstract

VizieR On-line Data Catalog: J/A+A/475/959. Originally published in: 2007A&A...475..959F

Computer Science

Stars: Pre-Main Sequence, X-Ray Sources

Scientific paper

To study the X-ray properties of young stellar objects (YSOs), we analyze an exceptionally sensitive Chandra dataset of the Coronet cluster in the CrA star-forming region, achieving a limiting luminosity of LX,min~5x1026erg/s for lightly absorbed sources. This dataset represents one of the most sensitive X-ray observations ever obtained of a star-forming region.
The X-ray data are used to investigate the membership status of tentative members of the region, to derive plasma temperatures and X-ray luminosities of the YSOs, and to investigate variability on the timescale of several years.
46 of the 92 X-ray sources in the merged Chandra image can be identified with optical or near/mid-infrared counterparts. X-ray emission is detected from all of the previously known optically visible late-type (spectral types G to M) stellar cluster members, from five of the eight brown dwarf candidates, and from nine embedded objects ("protostars") with class 0, class I, or flat-spectrum spectral-energy distributions (SEDs) in the field of view. While the Herbig Ae/Be stars TY CrA and R CrA, a close companion of the B9e star HD 176386, and the F0e star T CrA are detected, no X-ray emission is found from any of the Herbig-Haro (HH) objects or the protostellar cores without infrared source. We find indications for diffuse X-ray emission near R CrA/IRS 7.
(3 data files).

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