International Campaign on Equatorial Be Stars: Clouds vs. NRP

Details International Campaign on Equatorial Be Stars: Clouds vs. NRP International Campaign on Equatorial Be Stars: Clouds vs. NRP

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999noao.prop...29k&link_type=abstract

NOAO Proposal ID #1999B-0029

Astronomy and Astrophysics

Astrophysics

Scientific paper

Be stars, variable main sequence or giant B stars comprising some 20% of ``normal" B stars, represent one of the most interesting problems in variable star astrophysics. The physics that creates and maintains the equatorial disk present in these objects is still a matter of conjecture, as is the physical cause governing their variability. In this observing run, we seek to better understand both of these phenomena by studying the line-profile variations of the He I (lambda)6678 line along with simultaneous multi-band photometry. The observations taken at KPNO with the coude feed telescope and spectrograph will play a crucial role in this multi-longitude, international observing campaign.

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