Stellar content of the Chandra Deep Field North

Details Stellar content of the Chandra Deep Field North Stellar content of the Chandra Deep Field North

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprb17067h&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The Chandra Deep Field North provides a very sensitive view of the sky at X-ray wavelengths with limiting sensitivity better than 3 x 10-17 erg/s/cm-2 in the 0.5-2 keV band. While the great majority of the >400 unresolved sources are extragalactic, about 15 (3%) are low-mass stars in the disk or near halo of our Galaxy. We provide here the X-ray properties, optical photometry and spectroscopy, and estimated distances to these stars. The findings are compared to predictions based on a convolution of the stellar X-ray luminosity function with Galactic structure. >From these results, we comment on the long-term (10 Gyr) evolution of coronal activity in low-mass stars.

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