Optical identification of the transient X-ray source 4U1543-47

Details Optical identification of the transient X-ray source 4U1543-47 Optical identification of the transient X-ray source 4U1543-47

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983msngr..34...21p&link_type=abstract

ESO Messenger (ISSN 0722-6691), Dec. 1983, p. 21, 22.

Astronomy and Astrophysics

Astronomy

5

Visible Spectrum, X Ray Sources, Astronomical Spectroscopy, Charge Coupled Devices, Exosat Satellite

Scientific paper

Attention is given to the spectrum of the optical counterpart of the X-ray source 4U1543-47, which was obtained on September 2, 1983 with an Image Dissector Scanner yielding a dispersion of 171 A/mm. The emission line He II 4686 A, and the blend N III 4634, 4631 A, are both clearly visible and allow conclusive identification with the X-ray source. Several interstellar absorption features are present with a relatively large equivalent width, showing that this star is relatively distant.

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