The Signature of Precession on the Light Travel Time Effect in a Pulsating Star with an Unseen Companion
Abstract
The present study approaches from a theoretical viewpoint the analysis of the timing data of a pulsating star which has an unseen companion in the presence of the apsidal motion of the binary system orbit. The analytical expression of the ephemeris including the interplay between the light travel time effect and the apsidal motion was derived. The features as well as the detectability of the signature of these effects in the amplitude spectrum of the respective O-C residuals are discussed.
- Publication:
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Romanian Astronomical Journal
- Pub Date:
- November 2019
- Bibcode:
- 2019RoAJ...29..127P
- Keywords:
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- Methods: analytical;
- Stars: variables: general;
- Binaries: general