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- W2055452879 abstract "view Abstract Citations (206) References (139) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Einstein X-Ray Observatory Catalog of O-Type Stars Chlebowski, T. ; Harnden, F. R., Jr. ; Sciortino, S. Abstract Soft X-ray (0.2-3.5 keV) measurements for all normal, massive, O-type stars surveyed with the Einstein Observatory are presented as a catalog containing 89 detections and 176 upper bounds, together with a detailed discussion of the reduction process. Among the detections are 42 newly identified X-ray sources, several of them in heavily obscured regions. Values of L_x_/L_bol_, listed for most stars, range from 10^-5.44^ to 10^-7.35^; L_x_ spans more than 3 orders of magnitude, ranging from 1.5 x 10^31^ to 2 x 10^34^ ergs s^-1^. It is noted that at least 30% of O-type stars are variable in X-rays, but that there is little evidence for new objects whose X-ray emission might be significantly enhanced by accretion processes onto a neutron star. Publication: The Astrophysical Journal Pub Date: June 1989 DOI: 10.1086/167506 Bibcode: 1989ApJ...341..427C Keywords: Astronomical Catalogs; O Stars; X Ray Sources; X Ray Spectra; Heao 2; Stellar Luminosity; Stellar Mass; Variable Stars; Astrophysics; STARS: CATALOGS; STARS: EARLY-TYPE; X-RAYS: SOURCES full text sources ADS | data products SIMBAD (229)" @default.
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- W2055452879 date "1989-06-01" @default.
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- W2055452879 title "The Einstein X-ray Observatory Catalog of O-type stars" @default.
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