Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21734307b&link_type=abstract
American Astronomical Society, AAS Meeting #217, #343.07; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Marois et al. announced they had imaged three planets around the star HR 8799 in 2008. Because the mass of the companions depends on the age of the system, Marois et al. used various techniques to estimate the star's age and settled on a range between 30 and 160 Myr, which translated to masses of 5-11 MJ for the b companion and 7-13 MJ for the c and d companions. Here we use interferometric observations to place constraints on the star's and companions' ages and masses by directly measuring the angular diameter of HR 8799 using the CHARA Array. This value, when combined with the Hipparcos parallax, leads to the star's physical radius and can be used to calculate the star's effective temperature. This then allows us to place the star on an H-R diagram to determine its age and mass, which in turn tells us more about the nature of the imaged companions.
Baines Ellyn K.
Boyajian Tabetha
Ireland Mike
Jones Jason J.
McAlister Harold A.
No associations
LandOfFree
CHARA Array Measurements of HR 8799 and Their Implications for the Imaged Companions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with CHARA Array Measurements of HR 8799 and Their Implications for the Imaged Companions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CHARA Array Measurements of HR 8799 and Their Implications for the Imaged Companions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1402966