New Light On Southern Eclipsing Variables
Samec, R. G. ; Gothard, N. ; Stoddard, M. L. ; Culver, M. K. ; Banks, D. S. ; Corbin, S. F. ; Apple, J. D. ; Santiago, J. D. ; Terry, J. J. ; Smoke, N. P. ; Ehnis, D. A. ; Brown, D. P. ; Brougher, J. A. ; Astronomy Program Team
Abstract
Observations of Southern Eclipsing Variables, most of very short period and of solar-type are reported. 
These observations were all taken at Cerro Tololo Inter-American Observatory using the 1.0 m Yale and 
the 0.6 reflectors equiped with a Ga-As PMT. 
Most observations were taken using a BVRcIc filter sequence and some with UBVRcIc. These observations 
were taken over the course of six 7-9 night observing runs from August 1990 to September 1993. 
Here, we report the mean times of minimum light, JD Hel, (244+) for 
BF Pav: 9188.6306(2), 9188.7821(5), 9189.5376(30), 9189.6891(5), 9189.8401(3), 
AT Aqr: 8125.6145(2), 8125.7631(2), 
V902 Sgr: 9190.6293(2), 9190.7797(15), 9191.6589(3), 9191.8081(10), 
RT Hyi: 8128.8697(1), 8129.7202(2), 8129.8615(1), 8130.8564(8), 
V497 Sgr: 9192.8026(3), 49193.8281(4), 
V576Cen: 8690.6652(4), 8690.85313(1), 8691.6080(2), 8692.7955(7), 8695.5775(2), 48695.7671(11), 
V1961 Sgr: 8129.6076(1), 
V431Sgr: 8125.5381(3), 8127.5950(4), 8127.7337(1), 8130.6103(3). 
Phased plots and new period determinations are given. 
This analysis was conducted entirely by undergraduate students during the fall semester, 2000. 
This research was partially supported by a grant from NASA administered by the American Astronomical Society.

Publication: 
American Astronomical Society, 197th AAS Meeting, id.129.08; Bulletin of the American Astronomical Society, Vol. 33, p.713
Pub Date: December 2000 Bibcode: 2000AAS...19712908S