Exploration of the Time Domain With Palomar-Quest Survey

Details Exploration of the Time Domain With Palomar-Quest Survey Exploration of the Time Domain With Palomar-Quest Survey

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21342702d&link_type=abstract

American Astronomical Society, AAS Meeting #213, #427.02; Bulletin of the American Astronomical Society, Vol. 41, p.258

Astronomy and Astrophysics

Astronomy

Scientific paper

Palomar-Quest (PQ) digital synoptic sky survey, conducted at the Samuel Oschin 48-inch telescope at Palomar Observatory, using the Yale Quest-2, 161-Megapixel, 112-CCD camera, is now complete. The survey covered > 15,000 deg2 multiple times (up to several tens of pointings), spanning a range of time baselines from minutes to years. The data were taken in a drift scan mode, in Johnson UBRI or Gunn griz filters. They are now supplemented by an even larger data set taken in the traditional point-and-stare mode, with a broad red bandpass, much of it taken by the JPL NEAT team, and processed at LBNL Nearby Supernova Factory. This joint data set offers unprecedented opportunities for exploration of time domain in astronomy. All transient sources detected in the course of real-time processing of the drift scan survey have been published immediately, using the VOEventNet system. In addtion to a very productive supernova search conducted in collaboration with the LBNL Nearby Supernova Factory, we have conducted several studies: (1) a real-time detection of transients and strong variables; (2) a systematic study of QSO variability; (3) studies of blazar variability, and blazar discovery using variability alone; (4) the astrophysical nature of the most variable sources on the high-latitude sky. Follow-up spectroscopy was obtained at the Palomar 200-inch Hale telescope for a number of sources. We will report preliminary results from some of these studies. Experience gained in the course of this survey should be useful for future synoptic sky surveys.

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