Optical and IR Observations of XTE J0421+56 CI Cam During 1998

Details Optical and IR Observations of XTE J0421+56 CI Cam During 1998 Optical and IR Observations of XTE J0421+56 CI Cam During 1998

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.338g&link_type=abstract

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present the results of our Optical and IR Spectroscopy and Photometry of the relativistic jet source CI Cam = XTE J0421+56 during the April 1998 outburst and subsequent quiescent state later in 1998. Optical spectroscopy at the CfA Whipple Observatory (FLWO) shows an bright He II line decaying along with the x-ray outburst. Followup spectroscopy during the fall of 1998 allows sensitive limits on the motion of the emission lines, and allows us to search for evidence of a stellar photosphere. IR (J/H/K) photometry during the decay of the outburst shows a slow decay along with rapid fluctuations. IR spectra show a wealth of emission lines, similar to that seen in the optical. Infrared (H and K band) interferometric observations during the fall of 1998 with the CfA IOTA stellar interferometer resolve CI Cam. Observations at a variety of position angles allow us to determine the shape and size of the resolved object.

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