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Full-Text Articles in Physical Sciences and Mathematics
Ubvri Photometry Of The Type Ia Sn 1994d In Ngc 4526, Michael W. Richmond, Richard R. Treffers, Alexei V. Filippenko, Schuyler D. Van Dyk, Young Paik, Chien Peng, Laurence A. Marschall, Bentley D. Laaksonen, Bruce Macintosh, Ian S. Mclean
Ubvri Photometry Of The Type Ia Sn 1994d In Ngc 4526, Michael W. Richmond, Richard R. Treffers, Alexei V. Filippenko, Schuyler D. Van Dyk, Young Paik, Chien Peng, Laurence A. Marschall, Bentley D. Laaksonen, Bruce Macintosh, Ian S. Mclean
Physics and Astronomy Faculty Publications
We present optical photometry for the type Ia SN 1994D in NGC 4526 from 1994 March 7 to June 4 starting 13 days before B-band maximum. The light curves of this SN resemble closely those of the "normal" type Ia events SNe 1989B and 1980N, differing only in a slightly faster decline after maximum in VRI. The optical absolute magnitudes of SN 1994D, however, are significantly brighter than those of its near twins, and brighter than those predicted by Phillips' [ApJ, 413, L105 (1993)] relationship between decline rate and luminosity. Our small amount of IR photometry of SN 1994D …
Rotation Periods Of Open Cluster Stars, Iii, Charles F. Prosser, Matthew D. Shetrone, Amil Dasgupta, Dana E. Backman, Bentley D. Laaksonen, Shawn W. Baker, Laurence A. Marschall, Barbara A. Whitney, Konrad Kuuken, John R. Stauffer
Rotation Periods Of Open Cluster Stars, Iii, Charles F. Prosser, Matthew D. Shetrone, Amil Dasgupta, Dana E. Backman, Bentley D. Laaksonen, Shawn W. Baker, Laurence A. Marschall, Barbara A. Whitney, Konrad Kuuken, John R. Stauffer
Physics and Astronomy Faculty Publications
We present the results from a photometric monitoring program of 15 open cluster stars and one weak-lined T Tauri star during late 1993/early 1994. Several slow rotators which are members of the Alpha Persei, Pleiades, and Hyades open clusters have been monitored and period estimates derived. Using all available Pleiades stars with photometric periods together with current X-ray flux measurements, we illustrate the X-ray activity/rotation relation among Pleiades late-G/K dwarfs. The data show a clear break in the rotation-activity relation around P~6-7 days-in general accordance with previous results using more heterogeneous samples of G/K stars.