An X-ray pulsator in the direction of molecular cloud MBM 12 (Lynds 1457)

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/170351· OSTI ID:5260080

Koyama, K; Takano, S; Tawara, Y; Matsumoto, T; Noguchi, K ^[1]

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1. Nagoya University (Japan)

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. 21 refs.

• OSTI ID: 5260080
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 377; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTRONOMY
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COORDINATES
COSMIC GASES
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELECTROMAGNETIC RADIATION
FLUIDS
GASES
INFRARED RADIATION
OXIDES
OXYGEN COMPOUNDS
PULSARS
PULSATIONS
RADIATIONS
RADIOASTRONOMY
SPECTRA
X-RAY SPECTRA