Other
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aj....126..370d&link_type=abstract
The Astronomical Journal, Volume 126, Issue 1, pp. 370-384.
Other
2
Stars: Abundances, Stars: Early-Type, Stars: Individual (3 Vulpeculae), Stars: Variables: Other
Scientific paper
We describe photometry of 3 Vulpeculae obtained with the Four College Automated Photoelectric Telescope and spectroscopy obtained with the 1.22 m telescope of the Dominion Astrophysical Observatory. We have analyzed differential uvby photometric observations obtained over 7 yr. Three main frequencies (f1=0.9719, f2=0.7923, and f3=0.8553 cycles day-1) were found, as well as a sum frequency (f1+f2=1.76420 cycles day-1). A study of the photographic region using high-dispersion spectrograms obtained with a Reticon detector at the coudé spectrograph confirms the variable nature of 3 Vul as a 53 Persei star and indicates that the star's abundances are normal for main-sequence band B stars. The new spectra were combined with those previously published to confirm an orbital period very close to 1 yr. Finally, comparison with models yielded both a mass (4.16 Msolar) and an age (25 Myr), and a mass range for the companion (0.6-1.1 Msolar). With an orbital period of almost 1 yr and a pulsation period of almost 1 day, this star is indeed an observer's nightmare.
Adelman Saul J.
Dukes Robert J. Jr.
Kubinec Angela
Kubinec William R.
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