Short-Period Be and Related Variable Stars Discovered or Confirmed by Self-Correlation Analysis of Hipparcos Epoch Photometry

Details Short-Period Be and Related Variable Stars Discovered or Confirmed by Self-Correlation Analysis of Hipparcos Epoch Photometry Short-Period Be and Related Variable Stars Discovered or Confirmed by Self-Correlation Analysis of Hipparcos Epoch Photometry

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...202.3901p&link_type=abstract

American Astronomical Society Meeting 202, #39.01; Bulletin of the American Astronomical Society, Vol. 35, p.754

Astronomy and Astrophysics

Astronomy

Scientific paper

We have surveyed 277 bright Be stars for short-period photometric variability, using self-correlation analysis of Hipparcos epoch photometry. This extends the work of Percy et al. (2002 PASP 114, 551-558); the methods are as described therein. We report the discovery, time scale and amplitude of short-period variability in: HD 7636 (V764 Cas), HD 11606 (V777 Cas), HD 13661 (V549 Per), HD 34921, HD 36408, HD 40978, HD 58343 (FW CMa), HD 63460 (o Pup), HD 88195 (17 Sex), HD 89353 (AG Ant, HR 4049), HD 129954 (CO Cir), HD 158220 (V862 Ara), HD 173219 (V947 Sct), and HD 187567 (V1339 Aql). We report the confirmation of short-period variability, using an independent form of analysis, in HD 52918 (19 Mon), HD 105382 (V863 Cen), HD 137387 (κ -1 Aps), HD 157832 (V750 Ara), and HD 163868 (V3984 Sgr). These include a β Cephei star (19 Mon), a Vega-type star (17 Sex) and a post-AGB B star (HR 4049). We call attention to a small group of active Be stars whose self-correlation diagram (Δ mag versus Δ time) rises linearly with Δ time up to several days or more.
Supported by NSERC Canada, and the Ontario Work-Study Program.

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