English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Presence of mixed modes in red giants in binary systems

Themeßl, N., Hekker, S., & Elsworth, Y. (2017). Presence of mixed modes in red giants in binary systems. In EPJ Web of Conferences. Les Ulis: EDP Sciences. doi:10.1051/epjconf/201716005009.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0001-3D39-C Version Permalink: http://hdl.handle.net/21.11116/0000-0003-EC32-B
Genre: Conference Paper

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Themeßl, Nathalie1, Author              
Hekker, Saskia1, Author              
Elsworth, Yvonne, Author
Affiliations:
1Max Planck Research Group in Stellar Ages and Galactic Evolution (SAGE), Max Planck Institute for Solar System Research, Max Planck Society, Justus-von-Liebig-Weg 3, 37077 Göttingen, DE, ou_2265636              

Content

show
hide
Free keywords: -
 Abstract: The frequencies of oscillation modes in stars contain valueable information about the stellar properties. In red giants the frequency spectrum also contains mixed modes, with both pressure (p) and gravity (g) as restoring force, which are key to understanding the physical conditions in the stellar core. We observe a high fraction of red giants in binary systems, for which g-dominated mixed modes are not pronounced. This trend leads us to investigate whether this is specific for binary systems or a more general feature. We do so by comparing the fraction of stars with only p-dominated mixed modes in binaries and in a larger set of stars from the APOKASC sample. We find only p-dominated mixed modes in about 50% of red giants in detached eclipsing binaries compared to about 4% in the large sample. This could indicate that this phenomenon is tightly related to binarity and that the binary fraction in the APOKASC sample is about 8%.

Details

show
hide
Language(s): eng - English
 Dates: 2018-05-022017
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1051/epjconf/201716005009
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: EPJ Web of Conferences
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: Les Ulis : EDP Sciences
Pages: - Volume / Issue: 160 Sequence Number: 05009 Start / End Page: - Identifier: ISSN: 2100-014X
CoNE: https://pure.mpg.de/cone/journals/resource/2100-014X