FUSE Satellite Observations of VW Hyi
Datum: Thursday, 29. July 2004
Téma: Proměnné hvězdy
We have been informed by Dr. Knox Long that the Target-of-Opportunity
observations of the SU UMa-type cataclysmic variable VW Hyi with the
FUSE satellite have been scheduled. According to Dr. Long, "FUSE has
scheduled daily observations of VW Hyi beginning late in the week. We
will observe every day for about 6 days and then once every 3-4 days
through the end of August."
YOUR REGULAR OBSERVATIONS FROM NOW THROUGH AT LEAST THE MIDDLE OF
SEPTEMBER ARE CRUCIAL!
We recognize that there is a lot of cloudy weather at this time of
year in the southern hemisphere, so each observation you can make is
all the more precious.
In order to interpret the data that will be obtained with FUSE, it
will be essential to have a dense optical light curve. VW Hyi is
currently undergoing a supermaximum, as seen by the observations below
that have been reported to the AAVSO. Coverage as the star declines to
minimum, through minimum, and through any outbursts that occur during
August is needed.
Alert Notices 305, 306, and 308 (please see for details) announced and
discussed the request for optical monitoring of VW Hyi by Dr. Long and
his colleagues.
We would like to ask two things of you:
– Please continue to observe VW Hyi at least once a night and
report your observations to AAVSO Headquarters.
– Please notify Headquarters immediately if you see VW Hyi go
into outburst.
AAVSO 'b' and 'd' scale charts may be found at:
aavso.org/cgi-bin/searchcharts3.pl?name=vw%20hyi or on request to AAVSO Headquarters.
Zdroj: THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
http://www.aavso.org
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