Interferometric Observations of the Extrasolar Planetary System ρ Corona Borealis with the CHARA Array

Details Interferometric Observations of the Extrasolar Planetary System ρ Corona Borealis with the CHARA Array Interferometric Observations of the Extrasolar Planetary System ρ Corona Borealis with the CHARA Array

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.0905b&link_type=abstract

American Astronomical Society Meeting 208, #9.05; Bulletin of the American Astronomical Society, Vol. 38, p.88

Astronomy and Astrophysics

Astronomy

Scientific paper

The star ρ Coronae Borealis (ρ CrB, HR 5968, HD 143761, type G0 V) was discovered by Noyes et al. (ApJ, 483, L111, 1997) to contain a low-amplitude radial velocity variation that they attributed to a Jupiter-mass companion. On the basis of ground-based and HIPPARCOS astrometry, Gatewood, Han & Black (ApJ, 548, L61, 2001) concluded that the companion is more likely a late M dwarf star orbiting in a nearly face-on orbit. We report observations of ρ CrB made with the Georgia State University Center for High Angular Resolution Astronomy (CHARA) Array, a six-element optical/infrared interferometer located on Mount Wilson, California. The star was observed using the 156-m E2/W2 baseline on 2005 March 12, June 29 and July 3 along with the calibrator star HD 143393 (K2 III, V = +7.1) at an angular distance of 3.9 degrees from the target star using the standard Calibrator-Target-Calibrator bracketing for calibration purposes. All data were obtained with the "CHARA Classic" beam combiner in the K'-band infrared. These data shed new light on the nature of the companion.

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