Recent studies of the optical counterpart of GX 1+4

Details Recent studies of the optical counterpart of GX 1+4 Recent studies of the optical counterpart of GX 1+4

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..375s&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)375-(12)378

Astronomy and Astrophysics

Astronomy

5

Calcium, Emission Spectra, Light (Visible Radiation), Near Infrared Radiation, Pulsars, Stellar Luminosity, X Ray Astronomy, X Ray Binaries, Helium, M Stars, Nebulae, Oxygen, Radiation Counters, Reflecting Telescopes, Spectrographs, Titanium Oxides

Scientific paper

The galactic X-ray source GX 1+4 has been undergoing remarkable changes since early 1991. The X-ray pulsar has shown fast spin down accompanied by an increase in the hard X-ray intensity. We have obtained 1.6A resolution spectra of the optical counterpart extending the known spectrum to 8500A. The Ca II (8498A) line seen for the first time from this source is indicative of a nova burst scenario. Other lines detected for the first time are detailed and the significance of these features is discussed.

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