Publication
Title
First detection of a frequency multiplet in the line profile variations of RR Lyrae : towards an understanding of the Blazhko effect
Author
Abstract
We provide the first detection of a frequency multiplet in the line profile variations of RR Lyrae. Performing a period analysis on 669 high resolution line profiles obtained with the spectrograph ELODIE at OHP, we clearly detect a multiplet structure, with a separation equal to the Blazhko frequency, around the main frequency and its harmonics. The triplet components are very prominent; additional observations are needed to decide about the existence of a quintuplet. The complete understanding of the origin of the Blazhko effect still needs further theoretical modelling and better observations. Our detection of the frequency multiplet in the line profile variations is a first essential step towards a decisive confrontation between the theoretical models and the observations.
Language
English
Source (journal)
Impact of large-scale surveys on pulsating star research
Source (book)
176th IAU Colloquium on the Impact of Large-Scale Surveys on Pulsating, Star Research, AUG 08-12, 1999, BUDAPEST, HUNGARY
Publication
San francisco : Astronomical soc pacific , 2000
ISBN
1-58381-030-7
Volume/pages
203 (2000) , p. 286-290
ISI
000089620700094
Full text (open access)
UAntwerpen
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 26.04.2018
Last edited 23.08.2021