NASA NTRS · 19870042282
A hard X-ray source in the nearest molecular cloud
Abstract
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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Halpern, J. P., Patterson, J.. 1987-01-01. A hard X-ray source in the nearest molecular cloud. https://ntrs.nasa.gov/citations/19870042282
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