Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.5404r&link_type=abstract
American Astronomical Society Meeting 203, #54.04; Bulletin of the American Astronomical Society, Vol. 35, p.1294
Astronomy and Astrophysics
Astrophysics
Scientific paper
BVRI photometric observations of the binary system HS1136\+6646 were obtained at the SARA Observatory at Kitt Peak during 2002 and 2003. A time series analysis was performed on the resulting light curves revealed at least three frequencies. The largest amplitude ( 0.1 magnitude) variation corresponds to a period of 0.85 days. It is clearly related to the spectroscopic orbital period of the system. We hypothesize that two other signals, of amplitudes 0.02 magnitude and periods near 11 and 19 minutes, are modulated by the hot white dwarf star's rapid rotation. Support from the NSF to Florida Tech through the SARA Research Experiences for Undergraduates program (AST 0097616) and the Stellar Astronomy and Astrophysics program (AST 0206225) is gratefully acknowledged. This work is also partially supported by NASA subcontract Y701296 through the University of Arizona and the NASA Graduate Student Research Program (NGT5 50450).
Heinz T.
Johnston Kyle B.
Oswalt Terry D.
Rafferty S.
Rudkin Merissa
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