Roles
Bentley D. Laaksonen: Class of 1995
Vikram Adige: Class of 1995
Document Type
Article
Publication Date
12-1993
Department 1
Physics
Abstract
We present the results from a photometric monitoring program of 21 stars observed during 1992 in the Pleiades and Alpha Persei open clusters. Period determinations for 16 stars are given, 13 of which are the first periods reported for these stars. Brightness variations for an additional five cluster stars are also given. One K dwarf member of the a Per cluster is observed to have a period of rotation of only 4.39 hr, perhaps the shortest period currently known among BY Draconis variables. The individual photometric measurements have been deposited with the NSSDC. Combining current X-ray flux determinations with known photometric periods, we illustrate the X-ray activity/rotation relation among Pleiades K dwarfs based on available data.
Copyright Note
This is the publisher's version of the work. This publication appears in Gettysburg College's institutional repository by permission of the copyright owner for personal use, not for redistribution.
DOI
10.1086/133322
Recommended Citation
Prosser, Charles F., et al. Rotation Period of Open-Cluster Stars, II. Publications of the Astronomical Society of the Pacific. (December 1993) 105(694):1407-1414.