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Article: A tale of two stars: analysis of light variations in candidate Slowly Pulsating B and Gamma Doradus variables.(SOUTH CAROLINA ACADEMY OF SCIENCE ABSTRACTS)
- Article from:
- Bulletin of the South Carolina Academy of Science
- Article date:
- January 1, 2005
- Author:
CopyrightCOPYRIGHT 2005 South Carolina Academy of Science. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Both HD199122 and HD213617 are found to be periodic with frequencies within the characteristic range of g-mode pulsation for either the Slowly Pulsating B Stars (SPBs) or the Gamma Doradus stars. We originally began observing HD199122 as a SPB based on its appearance in the list of such stars found through Hipparcos data examination by Koen (MNRAS, 321, 44, 2001). However, as noted by Koen, its reported spectral type A2 is late for a SPB. Based on published photometric indices, he suggests that its spectral type is closer to B7, and thus, it is likely to be a SPB. Using Stromgren uvby photometry, we have examined over 600 differential measures of this star. We find two ...