A hard X-ray source in the nearest molecular cloud

Details A hard X-ray source in the nearest molecular cloud A hard X-ray source in the nearest molecular cloud

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...312l..31h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 312, Jan. 1, 1987, p. L31-L34.

Astronomy and Astrophysics

Astrophysics

22

Molecular Clouds, Nebulae, X Ray Sources, Carbon Monoxide, Heao 1, Pre-Main Sequence Stars, Sodium, T Tauri Stars

Scientific paper

The previous unidentified hard X-ray source H 0253 + 193 is coincident with Lynds 1457, a dark nebula at high galactic latitude (l = 159 deg, b = -34 deg). The Einstein IPC position coincides with the peak in the CO map obtained by Hobbs, Blitz, and Magnani (1986). Using interstellar Na I absorption, these authors determined a distance to the cloud of 65 pc, making this the nearest known molecular cloud. The X-ray source can be explained as an embedded T Tauri star with a 2-10 keV luminosity of 1 x 10 to the 31st erg/s.

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