Variability In Sloan's Equatorial Stripe

Details Variability In Sloan's Equatorial Stripe Variability In Sloan's Equatorial Stripe

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.4610r&link_type=abstract

American Astronomical Society, AAS Meeting #211, #46.10; Bulletin of the American Astronomical Society, Vol. 39, p.802

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The Sloan Digital Sky Survey (SDSS) equatorial Stripe 82 is located between 22h 24min < R.A. < 04h 08min and -1.27deg < DEC. < +1.27deg and covers an area of about 290 sq. deg. Stripe 82 has been observed multiple times during the course of SDSS, which makes it a perfect source of data for variability studies. Zeljko Ivezic and Branimir Sesar (Sesar et al., 2007) have put together a list of 13051 variable sources, each of which was observed an average of 20 times. I have calculated fits for two variability parameters (amplitude and characteristic timescale) for these objects using maximum likelihood statistics. The list is being probed for violent variability, as from BL Lac Objects and OVVs. Knowledge of these objects' parameters will help separate their contribution in the microwave from that of the CMB when the equatorial Stripe 82 is eventually observed with the Atacama Cosmology Telescope.

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