Publication
Title
Moment method and pixel-by-pixel method : complementary mode identification: I. testing FG Vir-like pulsation modes
Author
Abstract
We have carried out a Hare-and-Hound test to determine the reliability of the Moment Method (Briquet & Aerts 2003) and the Pixel-by-Pixel Method (Mantegazza 2000) for the identification of pulsation modes in Delta Scuti stars. For this purpose we calculated synthetic line profiles, exhibiting six pulsation modes of low degree and with input parameters initially unknown to us. The aim was to test and increase the quality of the mode identification by applying both methods independently and by using a combined technique. Our results show that, whereas the azimuthal order m and its sign can be fixed by both methods, the degree l is not determined unambiguously. Both identification methods show a better reliability if multiple modes are fitted simultaneously. In particular, the inclination angle is better determined. We have to emphasize that the outcome of this test is only meaningful for stars having pulsational velocities below 0.2 vsini. This is the first part of a series of articles, in which we will test these spectroscopic identification methods.
Language
English
Source (journal)
Communications in asteroseismology
Publication
2004
ISBN
978-3-7001-3290-5
Volume/pages
144 (2004) , p. 5-22
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Publication type
Subject
External links
Record
Identification
Creation 07.05.2018
Last edited 12.10.2020