view Abstract Citations (184) References (47) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS PG 0027+260: an Example of a Class of Cataclysmic Binaries With Mysterious, But Consistent, Behavior Thorstensen, John R. ; Ringwald, F. A. ; Wade, Richard A. ; Schmidt, Gary D. ; Norsworthy, Jane E. Abstract 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. Publication: The Astronomical Journal Pub Date: July 1991 DOI: 10.1086/115874 Bibcode: 1991AJ....102..272T Keywords: Cataclysmic Variables; Eclipsing Binary Stars; Novae; Stellar Spectra; Emission Spectra; Light Curve; Ultraviolet Spectra; Visible Spectrum; Astrophysics; STARS: ECLIPSING BINARIES; STARS: NOVAE full text sources ADS | data products SIMBAD (7) MAST (1) INES (1)