Precise surface gravitites of A-type stars from Asteroseismology

García Hernández, A.; Suárez, J. C.; Moya, A.; Monteiro, M. J. P. F. G.; Guo, Z.; Reese, D. R.; Pascual-Granado, J.; Barceló Forteza, S.; Martín-Ruiz, S.; Garrido, R.; Nieto, J.
Bibliographical reference

Highlights on Spanish Astrophysics X, Proceedings of the XIII Scientific Meeting of the Spanish Astronomical Society held on July 16-20, 2018, in Salamanca, Spain, ISBN 978-84-09-09331-1. B. Montesinos, A. Asensio Ramos, F. Buitrago, R. Schödel, E. Villaver, S. Pérez-Hoyos, I. Ordóñez-Etxeberria (eds.) p. 322-327

Advertised on:
3
2019
Number of authors
11
IAC number of authors
1
Citations
0
Refereed citations
0
Description
δ Sct are one of the most abundant pulsating stars in our Galaxy. In addition, they have moderate to fast rotations and periods of several hours. That makes them the suitable targets for studying the effects of rotation on stellar evolution. In this work, we show how to infer the mean density and the surface gravity of an A-type pulsanting star only from its oscillation frequencies. To do this, we used a separation between frequencies, known as large separation, which is proportional to the stellar mean density. This is the first step towards a reliable mode identification of their oscillation modes.