Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....50..445w&link_type=abstract
Astronomy and Astrophysics, vol. 50, no. 3, Aug. 1976, p. 445-449. Research sponsored by the Koninklijke Nederlandse Akademie v
Astronomy and Astrophysics
Astronomy
39
Astronomical Netherlands Satellite, Binary Stars, Dwarf Stars, Transient Response, Ultraviolet Photometry, X Ray Sources, Black Body Radiation, Brightness Temperature, Interstellar Extinction, Spaceborne Astronomy, Spectral Energy Distribution, Star Distribution, Stellar Luminosity, Stellar Spectra, Ubv Spectra
Scientific paper
Observations of the transient X-ray source A 0620-00 obtained by the five-band ultraviolet photometric system on board the Astronomical Netherlands Satellite are reported. After correction for reddening, the spectrum resembles that of a blackbody with a temperature of 28,000 K. The best estimate for the degree of reddening is E(B-V) of 0.39. X-ray, ultraviolet, and optical data are combined to construct a model for the system. It is assumed that A 0620-00 is a binary system, that the nongenerate companion is a dwarf, and that the oribtal inclination is zero. The low mass of the system makes a black hole unlikely. The galactic distribution of the transient X-ray sources is calculated.
Aalders W. G. J.
Kester D.
van Duinen R. J.
Wesselius R.. P.
Wu Congjun
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