Determination of the inclination of the multi-planet hosting star HR 8799 using asteroseismology

Download
  1. Get@NRC: Determination of the inclination of the multi-planet hosting star HR 8799 using asteroseismology (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1088/2041-8205/728/1/L20
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleAstrophysical journal letters
Volume728
Issue1
PagesL20-1L20-4; # of pages: 4
Subjectplanetary systems; stars: individual (HR 8799); stars: oscillations (including pulsations)
AbstractDirect imaging of the HR 8799 system was a major achievement in the study of exoplanets. HR 8799 is a gamma Doradus variable and asteroseismology can provide an independent constraint on the inclination. Using 650 high signal-to-noise, high-resolution, full visual wavelength spectroscopic observations obtained over two weeks at Observatoire de Haute Provence with the SOPHIE spectrograph, we find that the main frequency in the radial velocity data is 1.9875 day(-1). This frequency corresponds to the main frequency as found in previous photometric observations. Using the FAMIAS software to identify the pulsation modes, we find that this frequency is a prograde l = 1 sectoral mode and obtain the constraint that inclination i greater than or similar to 40 degrees.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Herzberg Institute of Astrophysics
Peer reviewedYes
NPARC number19809244
Export citationExport as RIS
Report a correctionReport a correction
Record identifierbcb3a9bd-39c8-48a1-b879-19e2e7e650af
Record created2012-04-13
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)