The detection of the donor star in IY UMa

Rolfe, Daniel J.; Abbott, Timothy M.C. and Haswell, Carole A. (2002). The detection of the donor star in IY UMa. Monthly Notices of the Royal Astronomical Society, 334(3) pp. 699–704.

DOI: https://doi.org/10.1046/j.1365-8711.2002.05563.x

Abstract

We present the results of a search for the donor star in the high-inclination SU UMa type cataclysmic variable IY UMa. We detect absorption features in the near infrared consistent with an M type dwarf donor star. Using the skew mapping technique to exploit the velocity information provided by the 8183–8194 Å Na i absorption doublet, we locate the absorption at the expected donor velocity of IY UMa.

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