The space photometry revolution and our understanding of RR Lyrae stars

Journal
Date Issued
2015
Author(s)
Szabó, R.
•
Benkő, M. J.
•
Paparó, M.
•
Chapellier, E.
•
•
Baglin, A.
•
Weiss, W. W.
•
Kolenberg, K.
•
Guggenberger, E.
•
Le Borgne, J. -F.
DOI
Abstract
The study of RR Lyrae stars has recently been invigorated thanks to the long, uninterrupted, ultra-precise time series data provided by the Kepler and CoRoT space telescopes. We give a brief overview of the new observational findings concentrating on the connection between period doubling and the Blazhko modulation, and the omnipresence of additional periodicities in all RR Lyrae subtypes, except for non-modulated RRab stars. Recent theoretical results demonstrate that if more than two modes are present in a nonlinear dynamical system such as a high-amplitude RR Lyrae star, the outcome is often an extremely intricate dynamical state. Thus, based on these discoveries, an underlying picture of complex dynamical interactions between modes is emerging which sheds new light on the century-old Blazhko-phenomenon, as well. New directions of theoretical efforts, like multidimensional hydrodynamical simulations, future space photometric missions and detailed spectroscopic investigations will pave the way towards a more complete understanding of the atmospheric and pulsation dynamics of these enigmatic touchstone objects.

Coverage
The Space Photometry Revolution – CoRoT Symposium 3, Kepler KASC-7 Joint Meeting
All editors
García. R.A.; Ballot, J.
Volume
101
Start page
01003
Conferenece
The Space Photometry Revolution – CoRoT Symposium 3, Kepler KASC-7 Joint Meeting
Conferenece place
Toulouse, France
Conferenece date
July 6-11, 2014
Uri
Url
Issn Identifier
2101-6275
Ads BibCode
2015EPJWC.10101003S
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

epjconf_sphr2014_01004.pdf

Size

5.29 MB

Format

Adobe PDF

Checksum (MD5)

2ae43672034c4f2b14ab0087fa1fc2a0