CCD Photometry of Palomar-Green Cataclysmic Variables

Details CCD Photometry of Palomar-Green Cataclysmic Variables CCD Photometry of Palomar-Green Cataclysmic Variables

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.2103m&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #21.03; Bulletin of the American Astronomical Society, Vol. 26, p.1344

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We report CCD time-resolved photometric observations of three objects selected from a study of cataclysmic variable candidates in the Palomar-Green survey of high-galactic-latitude ultraviolet excess objects. We identify PG 0911-066 as a likely dwarf nova, possibly of the WZ Sge sub-type and find a large-amplitude, short-period photometric periodicity, possibly orbital in nature, of 82.931+/-0.001 min. We find a superhump period of 0.0656+/-0.0001 d for a new SU UMa dwarf nova, PG 0943+521 and identify unusual behavior which may be indicative of a link between the SU UMa class of dwarf novae and short-period permanent superhump systems. Our study of PG 1633+115 reveals long-term variability as well as a photometric periodicity of ~ 3.5 hr; an aliasing problem prevents the identification of a unique period. Finally, we briefly examine the impact of the present study on the fraction of eclipsing systems in the magnitude limited sample.

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