Session 127 Variations in Stars

Oral, Thursday, January 8, 2004, 10:00-11:30am, Regency VI

127.01 Infrared Absorption By Carbon Monoxide in R CrB Type Stars

E. Tenenbaum (Pomona Coll.& Maria Mitchell Obs.), G.C. Clayton (Louisiana State U. & Maria Mitchell Obs.), C. Englebracht (Steward Obs.), M. Asplund (Mt. Stromlo Obs.)

127.02D RR Lyrae Variables in the ROTSE-I Survey

K. Kinemuchi (Michigan State University), P.R. Wozniak (Los Alamos National Laboratory), H.A. Smith (Michigan State University), ROTSE Collaboration

127.03 A Large Fraction of Radial-Velocity Variables among the Central Stars of Planetary Nebula

O. De Marco (Amrican Museum of Natural History), H.E. Bond (Space Telescope Science Institute), D. Harmer (National Optical Astronomy Observatories), A.J. Fleming (Michigan Technological University)

127.04D Projected Rotational Velocities of OB Stars in 19 Open Clusters

W. Huang (Georgia State University)

127.05D New Observational Constraints on the Mass-Loss History of SN 1987A

B. E. K. Sugerman (Space Telescope Science Institute), A. P. S. Crotts (Columbia University), S. S. Lawerence (Hofstra University), S. R. Heathcote (CTIO), W. E. Kunkel (Carnegie Inst. of Washington)

127.06 Hydrogen and Helium Emission in Type II Cepheids: The Long Period Stars

E.G. Schmidt, D. Johnston, S. Langan, K.M. Lee (University of Nebraska), P.R. Newman, S.A. Snedden (Apache Point Observatory)