PG0027 + 260 - An example of a class of cataclysmic binaries with mysterious, but consistent, behavior

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Astronomical Journal; (United States)

DOI:https://doi.org/10.1086/115874· OSTI ID:5194220

Thorstensen, J R; Ringwald, F A; Wade, R A; Schmidt, G D; Norsworthy, J E ^[1]

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1. Dartmouth College, Hanover, NH (USA) Pennsylvania State University, University Park (USA) Steward Observatory, Tucson, AZ (USA)

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. 58 refs.

• OSTI ID: 5194220
• Journal Information: Astronomical Journal; (United States), Journal Name: Astronomical Journal; (United States) Vol. 102; ISSN 0004-6256; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
BRIGHTNESS
ECLIPSE
EMISSION SPECTRA
ERUPTIVE VARIABLE STARS
MATHEMATICAL MODELS
NOVAE
OPTICAL PROPERTIES
ORBITS
PHYSICAL PROPERTIES
SPECTRA
STAR MODELS
STARS
ULTRAVIOLET SPECTRA
VARIABLE STARS
VISIBLE SPECTRA