Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.1806h&link_type=abstract
American Astronomical Society Meeting 205, #18.06; Bulletin of the American Astronomical Society, Vol. 36, p.1369
Astronomy and Astrophysics
Astronomy
Scientific paper
We present a periodicity and preliminary light analysis of V1128 Tauri [HIP 17878, GSC 664 694, α (2000) = 03h 49m 27.8s, δ (2000) = +12° 54' 44"]. The observations were taken from 24 - 27 December 2003, by RGS, DRF, and NCH with the Southeastern Association for Research in Astronomy (SARA) 0.9-m reflector and AP7 CCD at Kitt Peak. Standard UBVRcIc filters were used. Between 70 and 100 observations were taken in each pass band. Mean epochs of minimum light for two secondary eclipses, HJD = 2452998.6636(12) and 2453000.8048(7) as well as one primary eclipse, 2453000.6524(3) were determined using quadratic fits. We calculated the following ephemeris from all available timings of minimum light:
J.D. Hel Min I = 2453000.6526 (2) + 0.30537315 (6) d*E
V1128 Tau is a near contact or shallow contact solar-type binary. The eclipse depths are slightly unequal; the amplitudes in V are 0.74 mag and 0.70 mag. The slight difference in the maxima gives evidence of some spot activity. A Wilson-Devinney code solution is presented.
We wish to thank SARA for their allocation of observing time, and the grant from NASA administered by the American Astronomical Society.
Faulkner Danny R.
Hawkins Nathan C.
Samec Ronald G.
van Hamme Walter
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