Discovery of Hard X-rays from Class 0 candidates in the Orion Molecular Cloud 2/3 region with Chandra

Details Discovery of Hard X-rays from Class 0 candidates in the Orion Molecular Cloud 2/3 region with Chandra Discovery of Hard X-rays from Class 0 candidates in the Orion Molecular Cloud 2/3 region with Chandra

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.4209t&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #42.09; Bulletin of the American Astronomical Society, Vol. 32, p.1256

Astronomy and Astrophysics

Astronomy

Scientific paper

We have observed a 17' x 17' field in the Orion Molecular Cloud 2 and 3 region with the Chandra X-ray Observatory. A 90 ksec exposure of ACIS in 0.5--8 keV band revealed about 300 sources, in which 90 % are new detection in X-ray wavelength. From 7 of the 36 Class 0 candidates, we detected highly absorbed X-rays (L x ~ 1030 erg s-1, N H ~ 1023 H cm-2). Then these results would be the first evidence that X-rays are emitted from very early phase of stellar evolution, possibly in the age of less than 105 year.

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