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publication

An X-ray Pulsator in the Direction of Molecular Cloud MBM12 (Lynds 1457)

K. Koyama, S. Takano, Y. Tawara, T. Matsumoto, K. Noguchi, Y. Fukui, T. Iwata, N. Ohashi, K. Tatematsu, N. Takahashi, T. Umemoto, K.W. Hodapp, J. Rayner, and K. Makishima

Abstract

Multiwave observations have been conducted near the central region of a molecular cloud MBM 12 and a peculiar X-ray source HO253 + 193. An IR object with a K-magnitude of about 13.5 was discovered within the error circle of X-ray source HO253 + 193. In the X-ray band, a coherent 206 s pulsation from HO253 + 193 was found. X-ray spectrum of HO253 + 193 was very similar to that of a cataclysmic variable with a strong magnetic field. With fine CO mapping observation near HO253 + 193, it was found that the position of HO253 + 193 (or the new IR source) is slightly off-center from the intensity peak of the molecular cloud.

 
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