Computer Science
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aan...376....1t&link_type=abstract
AAVSO Alert Notice 376
Computer Science
Sdss J151413.72+454911.9, Cataclysmic Variable, Hst, Pulsating White Dwarf, Aavso International Database
Scientific paper
Dr. Paula Szkody (University of Washington) and collaborators have requested our help in monitoring the cataclysmic variable SDSS151445 (SDSS J151413.72+454911.9) for upcoming Hubble Space Telescope observations in May. SDSS151445 has not previously been seen in outburst, and is being observed as part of a larger study of pulsating white dwarf primaries in cataclysmic variables. In particular, Szkody and collaborators are investigating the effects that higher temperatures and larger rotation velocities caused by accretion have on the pulsation behavior. This object is very faint at quiescence, with V=19.5. AAVSO observations are requested to ensure that the object is indeed faint when observed with HST, as it could damage the instrument if it were to go into outburst. AAVSO observations will be used to make a "go"/"no go" decision prior to the opening of the HST window, and will also be used in the analysis of the resulting data. Observers should monitor this object night!
ly beginning now through May 10 UT at least. A follow-up AAVSO Special Notice will be issued when the observing window has been set. In the event of an outburst, please contact the AAVSO immediately. CCD observers are asked to use filters if possible, preferably V, but B, Rc, and Ic may also be used. Please use sufficient exposure (with S/N = 10) to reach at least the 15.023V comparison star, even if you cannot reach 19.5V in reasonable time. Please submit observations to the AAVSO International Database using the name SDSS151445.
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