Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102..272t&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 102, July 1991, p. 272-283.
Astronomy and Astrophysics
Astronomy
130
Cataclysmic Variables, Eclipsing Binary Stars, Novae, Stellar Spectra, Emission Spectra, Light Curve, Ultraviolet Spectra, Visible Spectrum
Scientific paper
This paper reports extensive optical observations on the PG0027 + 260 binary, carried out on August 1984 with the 1.3 McGraw-Hill telescope and Mark II spectrometer at Michigan-Dartmouth-MIT Observatory on Kitt Peak. It is shown that this object is an eclipsing novalike variable with an orbital period of 3.51 hr. The PG0027 + 260 displays several unexplained phenomena which are remarkably similar to those of the SW Sex, DW UMa, and V1315 Aql, which are eclipsing novalike stars with periods between 3 and 4 hrs. The eclipse of the PG0027 + 260 is modeled, and it is shown that, while the mean eclipse light curve is easy to match, there is no simple explanation for the variable depth.
Norsworthy Jane E.
Ringwald Fred A.
Schmidt Gary D.
Thorstensen John R.
Wade Richard A.
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