Other
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21734205r&link_type=abstract
American Astronomical Society, AAS Meeting #217, #342.05; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
Nonradial pulsations (NRPs) are spherical harmonic waves that propagate across the stellar surface and are driven beneath the surface by an ionized iron opacity mechanism. NRPs are a possible formation mechanism of the equatorial disk surrounding a Be star. Be stars are non-supergiant B-type stars that have been observed at some point with emission in the Balmer or other spectral lines. The emission features are the result of an equatorial mass-loss disk. Transient Be stars are those that have been observed with both emission features due to a circumstellar disk and with a non-emitting B-type spectrum. We observed NGC 3766, a young open cluster rich with B and transient Be stars, for 25 nights over three years at the CTIO 0.9m telescope using the Strömgren uvby filter system. We present the results of a period search to investigate presence of nonradial pulsations in the B and Be cluster members.
We acknowledge support from Lehigh University and the Harriet G. Jenkins Pre-Doctoral Fellowship Program, supported by NASA and UNCF.
McSwain Virgina M.
Roettenbacher Rachael M.
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