The
November 2003 superoutburst of UV Per
Below
is a compilation of my November 2003 CCD
observations of UV Per. All CCD images (unfiltered) have been acquired at CBA Belgium Observatory, using
an ST-7 CCD and 0.35-m f/6.3 telescope. Photometric
conditions were as follows :
2003, November
04/05 : good
2003, November 10/11 : poor (cirrus clouds)
2003, November 11/12 : good
2003, November 14/15 : good
Resulting light
curves are listed below. During our first night of
observations (2003, Nov 04/05), UV Per was still on
its rise to maximum, and no modulations were present
in the light curve. After returning from a business
trip, I continued to observe UV Per, an my
observations of Nov 10/11 clearly revealed the
presence of well-developed superhumps in this
system. Also the following nights were dominated by
superhump modulations.
On the basis of the
Nov 10/11, 11/12 and 14/15, 2003 observations, I
determined a superhump period of 95.76 +/- 0.05
mins, a value that is well in agreement with initial
results derived by the AAVSO (see http://www.aavso.org/tmp/uvper.shtml)
from a much larger sample of observations. It also
fits with the 1989 outburst superhump period value,
published by Udalski and Pych (1992), of 95.6 +/-
0.000038 mins. The orbital period of UV Per is 93.44
mins, and was determined by Thorstensen and Taylor (1997,
PASP, 109, 1359). Please note that the orbital
period of 89.6 mins, published by Kato in 1990, is
erroneous.