XB 1905 + 000 - The most distant optically identified X-ray burster?

Details XB 1905 + 000 - The most distant optically identified X-ray burster? XB 1905 + 000 - The most distant optically identified X-ray burster?

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...147l...3c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 147, no. 1, June 1985, p. L3-L5. Research supported by the Centre National d'E

Astronomy and Astrophysics

Astrophysics

14

Heao 2, Stellar Spectra, X Ray Binaries, X Ray Sources, Bursts, Ubv Spectra, Visual Observation

Scientific paper

The authors have identified the optical counterpart of the X-ray burst source XB 1905+000 using multicolor CCD images obtained with the ESO 2.2 m telescope in May 1984. This faint star (V = 20.5) has a large UV excess (U-B = -0.5, B-V = 0.5), is found within the combined SAS-3/HEAO A-3 error box, and is furthermore consistent with the reprocessed Einstein HRI source position. Its X-ray to optical luminosity ratio is roughly 400, within the range for other low-mass binaries. If its absolute visual magnitude is close to the average value for other bursters, it may then be the most distant (20 kpc) optically identified object of this class.

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