Using the Landolt Selected Areas (SAs) for Photometric Identification of Faint Supernovae and Optical Counterparts to Gamma-R

Volume 29 number 1 (2001)

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Mark H. Slovak

Louisiana State University Department of Physics and Astronomy Baton Rouge, LA 70803

T. Gregory Guzik

Louisiana State University Department of Physics and Astronomy Baton Rouge, LA 70803

Arlo Landolt

Louisiana State University Department of Physics and Astronomy Baton Rouge, LA 70803

Walter Cooney

Baton Rouge Astronomical Society 6348 Double Tree Ct. Baton Rouge, LA 70817

Abstract

We propose to use the Landolt Selected Areas (SAs) as convenient photometric fields to calibrate magnitudes and colors of faint supernovae and optical counterparts or “flashes” associated with transient gamma-ray bursts (GRBs). The spacing of and established photometric sequences in the SAs makes them convenient reference fields to interleave with CCD images of suspected time-variable objects for transformation of instrumental magnitudes and colors to standardized systems.