Eprint already available on another site (E-prints, working papers and research blog)
PB 8783: the first sdO star suitable for asteroseismic modeling?
Van Grootel, Valérie; Randall, Suzanna K.; Latour, Marilyn et al.
2019
 

Files


Full Text
1905.00654.pdf
Publisher postprint (1.88 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Astrophysics - Solar and Stellar Astrophysics
Abstract :
[en] Pulsating hot B subdwarf (sdB) stars, which are core-He burning objects, are one of the showcases of asteroseismology. Thanks to the combination of rich pulsation spectra and state-of-the-art modeling tools it is possible to tightly constrain fundamental parameters such as the stellar mass. There are on the contrary very few hotter sdO pulsators, which are in a more advanced evolutionary stage. Some of them are identified in Globular Clusters (GCs), but they are extremely rare in the field. Recently, it was suggested that PB8783, one of the very first sdB pulsators discovered in 1997, may in fact be an unrecognized hot sdO star with very similar properties to the GC pulsators. We present here new very high-quality spectroscopy of PB8783 as well as an asteroseismic analysis of the pulsator and answer the question: is PB 8783 the first sdO star suitable for asteroseismic modeling?
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Van Grootel, Valérie  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Randall, Suzanna K.
Latour, Marilyn
Németh, Peter
Fontaine, Gilles
Brassard, Pierre
Charpinet, Stephane
Green, Elizabeth M.
Language :
English
Title :
PB 8783: the first sdO star suitable for asteroseismic modeling?
Publication date :
01 May 2019
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 08 January 2019

Statistics


Number of views
77 (22 by ULiège)
Number of downloads
37 (4 by ULiège)

OpenCitations
 
0

Bibliography


Similar publications



Contact ORBi