Other
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.7303t&link_type=abstract
American Astronomical Society Meeting 203, #73.03; Bulletin of the American Astronomical Society, Vol. 35, p.1320
Other
Scientific paper
The pulsating white dwarf star PY Vul (G 185-32) exhibits pulsation modes with peculiar properties that set it apart from other variable stars in the ZZ Ceti (DAV) class. These peculiarities include a low total pulsation amplitude, a mode with bizarre amplitudes in the ultraviolet, and a mode harmonic that exceeds the amplitude of its fundamental. Here, we present optical, time series spectroscopy of PY Vul acquired with the Keck II LRIS spectrograph. Our analysis has revealed that the mode with unusual UV amplitudes also has distinguishing characteristics in the optical. Comparison of its line profile variations to models suggests that this mode has a spherical degree of four. We show that all the other peculiarities in this star are accounted for by a dominant pulsation mode of ℓ=4, and propose this hypothesis as a solution to the mysteries of PY Vul.
Clemens James Christopher
Thompson Sally E.
van Kerkwijk Marten Henric
No associations
LandOfFree
The Peculiar Pulsations of PY Vul does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Peculiar Pulsations of PY Vul, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Peculiar Pulsations of PY Vul will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1420864