Determining the ages of nearby A-stars with long-baseline interferometry

Jeremy Jones, R. J. White, T. Boyajian, G. Schaefer, E. Baines, M. Ireland, J. Patience, The CHARA Team

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

We determine the age of 7 stars in the Ursa Major moving group using a novel method that models the fundamental parameters of rapidly rotating A-stars based on interferometric observations and literature photometry and compares these parameters (namely, radius, luminosity, and rotation velocity) with evolution models that account for rotation. We find these stars to be coeval, thus providing an age estimate for the moving group and validating this technique. With this technique validated, we determine the age of the rapidly rotating, directly imaged planet host star, κ Andromedae.

Original languageEnglish
Title of host publicationYoung stars and planets near the Sun
Subtitle of host publicationproceedings of the 314th Symposium of the International Astronomical Union held in Atlanta, Georgia, USA, May 11-15, 2015
EditorsJoel H. Kastner, Beate Stelzer, Stanimir Metchev
PublisherCambridge University Press
Pages119-120
Number of pages2
ISBN (Print)9781107138162
DOIs
Publication statusPublished - 2016
Externally publishedYes
EventIAUS 314: Young Stars & Planets Near the Sun - Georgia State University, Atlanta, Georgia, United States
Duration: 11 May 201515 May 2015
http://youngstars.gsu.edu/

Publication series

NameProceedings of the International Astronomical Union
PublisherCambridge University Press
NumberS314
Volume10
ISSN (Print)1743-9213

Conference

ConferenceIAUS 314
CountryUnited States
CityAtlanta, Georgia
Period11/05/1515/05/15
Internet address

Keywords

  • stars: early-type
  • stars: evolution
  • stars: individual (κ And)
  • stars: rotation
  • techniques: interferometric

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