Analyses of the light variation of the 6 Scuti star CC Andromedae and
of the radial velocity variation of the ß Canis Majoris star 6 Scorpii, a
single -line spectroscopic binary, indicate that the long period modulations
exhibited are caused by tidal deformations induced in the hydrogen and /or
helium ionization zones of each primary by a faint companion, resulting in
surface zonal variations of the amplitude and phase of each primary's
normal radial pulsations.
The variations in the tide raising potential calculated at the center
of the apparent disk of o Scorpii correlate very strongly with the observed
variations in the phase zero -point of the fundamental pulsation.
It is suggested that all the ß Canis Majoris and 6 Scuti stars exhibiting
long period modulation, and probably also the RR Lyrae stars
showing a Blazhko effect, do so because of tidal perturbations induced by
faint companions.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/623810 |
| Date | 10 1900 |
| Creators | Fitch, W. S. |
| Contributors | Univ Arizona, Steward Observ |
| Publisher | Steward Observatory, The University of Arizona (Tucson, Arizona) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Article |
| Source | Steward Observatory Parker Library SO QB 4 .S752 ARCH |
| Rights | Copyright © All Rights Reserved. |
| Relation | Preprints of the Steward Observatory #3, http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1967ApJ...148..481F&db_key=AST&data_type=HTML&format=&high=3ed65e9cd003484 |
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