Journal
ASTROPHYSICAL JOURNAL
Volume 728, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/728/2/111
Keywords
binaries: close; techniques: interferometric
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Funding
- National Science Foundation through NSF [AST 09-08253]
- College of Arts and Sciences at Georgia State University
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We employ the wide component of a triple system to calibrate the interferometric visibility of the inner, short-period orbit in the case of V819 Her. The orbit for V819 Her B was thereby derived by performing chi(2) fit to interferometric visibility measurements from observations of fringe packets at the CHARA Array. Comparing this orbit to that of V819 Her AB (the wider orbit in this hierarchical triple system), the mutual inclination was found to be 33 degrees.5 +/- 9 degrees.3, consistent with observations of other triple systems. Also, due to the presence of an evolved component in the system, the age of the system can be estimated to be 1.9 Gyr +/- 1.1 Gyr.
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