Department of Physics and Astronomy
202 Nicholson Hall
Louisiana State University
Baton Rouge, LA 70803-4001
Office: 376 Nicholson Hall
Present Research Interests
Our research effort has been concerned with the measurement of stellar brightness and colors, i.e., stellar photometry. Much of our time in the last thirty years has been spent in the improvement and definition of photometric standard stars. These standard stars are used as calibration yardsticks when studying celestial objects, or indeed any objects projected against the celestial sphere, whose characteristics are unknown. For the case of physical celestial objects, one eventually can relate brightness and color measures to a variety of physical characteristics. These quantities in turn help determine stellar distance, define a star's place in stellar evolution, etc. Research projects also are under way in the areas of star clusters, variable stars, novae, supernovae, and eclipsing binaries.
George van Biesbroeck Award, American Astronomical Society, 1995.
B.E. Schaefer, A.U. Landolt, N. Vogt, D. Buckley, B. Warner, A.R. Walker, and H.E. Bond, "The Photometric Period of the Recurrent Nova T Pyxidis," Astrophys. J. Suppl. 81:321 (1992).
A.U. Landolt, "UBVRI Photometric Standard Stars in the Magnitude Range 11.5 < V < 16.0 Around the Celestial Equator," Astron. J 104:340 (1992).
A.U. Landolt, "Broadband UBVRI Photometry of the Baldwin-Stone Southern Hemisphere Spectrophotometric Standards," Astron. J. 104:372 (1992).
G.W. Preston and A.U. Landolt, "CS 22966-043: A Bright New Field SX Phoenicis Star Similar to Those in NGC 5053," Astron. J. 115:2515 (1998).
J.S. Drilling, J.A. Hecht, G.C. Clayton, J.A. Mattei, A.U. Landolt, and B.A. Whitney, "The Ultraviolet Extinction Curve for Circumstellar Dust Formed in the Hydrogen-Poor Environment of V348 Sagittarii," Astrophys. J. 476:865 (1997).