non-radial pulsations; mode identification; fundamental parameters determination
Abstract :
[en] Understanding the internal structure of pulsating Herbig Ae stars by the aim of an asteroseismological study will help us to constrain the origin of the tremendous activity, wind and variability observed in this group of pre-main sequence stars. The time-series analysis of the equivalent photospheric profiles of HD 104237 has revealed non-radial pulsations of low-degree (ℓ = 0 or 1). We present a preliminary mode identification corresponding to the main detected frequency f1 = 33.289 c/d. In addition, as we need to constrain a stellar atmosphere model in order to simulate the pulsations of HD 104237, our aim is to determine accurately its fundamental parameters (Teff, log g, abundances); as this study is still in progress, we present our strategy.
Disciplines :
Physics
Author, co-author :
Fumel, Aurélie ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Böhm, Torsten; Université de Toulouse ; UPS-OMP ; IRAP ; , Toulouse, France ; CNRS ; IRAP, 14 avenue Edouard Belin, 31400, Toulouse, France
Language :
English
Title :
Towards the asteroseismology analysis of the Herbig Ae star HD 104237
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.