Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21712604r&link_type=abstract
American Astronomical Society, AAS Meeting #217, #126.04; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
We report the discovery of an extremely deep-eclipsing cataclysmic variable with eclipse depth 5 magnitudes, orbital period 94.657 min, and peak brightness V 18. After incidental discovery by visual inspection of wide-field CCD images acquired with the Yale University QUEST camera on the European Observatory 1.0-m Schmidt at La Silla, we obtained photometric light curves in B, V, and R, each simultaneous with J using ANDICAM on the SMARTS 1.3m at Cerro Tololo. We also obtained light curves in U, V, i, and z with the SMARTS 1.0m and spectra covering the wavelength range 3500 to 9000 A with the Goodman spectrograph on the SOAR 4.1m. The optical light curves are periodic with a complex structure -- a short eclipse of duration 5 min and depth > 5 mags followed immediately by a long eclipse of duration 38 min and depth 2 mags. Between eclipses the light curve varies sinusoidally with amplitude 1 mag. We observe significant changes in the light-curve shape with wavelength, with no short-duration eclipses appearing in the J band. The spectra reveal strong Hydrogen emission lines, and a continuum that varies with light curve phase. No known radio or x-ray source coincides with the new object's location.
Bailyn Charles
Baltay Charles
Coppi Paolo
Folatelli Gaston
Hoyer Sergio
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