Time Domain Exploration with the Palomar-QUEST Sky Survey

Details Time Domain Exploration with the Palomar-QUEST Sky Survey Time Domain Exploration with the Palomar-QUEST Sky Survey

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.2104m&link_type=abstract

American Astronomical Society Meeting 210, #21.04; Bulletin of the American Astronomical Society, Vol. 39, p.124

Statistics

Scientific paper

Palomar-QUEST (PQ) synoptic sky survey has now been routinely processing data from driftscans in real-time. As four photometric bandpasses are utilized in nearly simultaneously, PQ is well suited to search for transient and highly variable objects. Using a series of software filters i.e. programs to select/deselect objects based on certain criteria we shorten the list of candidates from the initially flagged candidate transients. Such filters include looking for known asteroids, known variables, as well as moving, but previously uncatalogued objects based on their motion within a scan as well as between successive scans. Some software filters also deal with instrumental artifacts, edge effects, and use clustering of spurious detections around bright stars. During a typical night when we cover about 500 sq. degrees, we detect hundreds of asteroids, the primary contaminants in the search for astrophysical transients beyond our solar system.
Here we describe some statistics based on the software filters we employ and the nature of the objects that seem to survive the process. We also discuss the usefulness of this to amateur astronomers, projects like VOEventNet, and other synoptic sky surveys.
We also present an outline of the work we have started on quantifying the variability of quasars, blazars, as well as various classes of Galactic sources, by combining the large number of PQ scans with other existing data sources federated in the Virtual Observatory environment.
The PQ survey is partially supported by the U.S. National Science Foundation (NSF).

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