Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21349115s&link_type=abstract
American Astronomical Society, AAS Meeting #213, #491.15; Bulletin of the American Astronomical Society, Vol. 41, p.469
Astronomy and Astrophysics
Astrophysics
Scientific paper
We present preliminary results from a total of 212.1 hours of data from multi-site observations of GW Lib. Our results reveal a signal near the 2.1-hr period previously detected by Woudt & Warner in quiescence, but of slightly shorter period, and also a modulation at 4-hr. Both the 2 and 4-hr modulations appear to vary in period and/or phase. The 4-hr period may be the fundamental period and the 2-hr a harmonic. Fourier analysis also shows a transient 20-min modulation that is anti-correlated in amplitude with the 2-hr periodicity. Using a smaller data set, we investigate higher frequency pulsations and compare to those found by previous authors before outburst.
This project was funded by a partnership between the National Science Foundation (NSF AST-0552798), Research Experiences for Undergraduates (REU), and the Department of Defense (DoD) ASSURE (Awards to Stimulate and Support Undergraduate Research Experiences) programs. Observations were made in collaboration with the Center for Backyard Astrophysics (CBA).
Bolt G. G.
Foote Jerry
Krajci Thomas
McCormick Justin J.
Monard Berto
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