Martioli, Eder, McArthur, Barbara E., Benedict, G. Fritz, Bean, Jacob L., Harrison, Thomas E., Armstrong, Amber
We use Hubble Space Telescope Fine Guidance Sensor astrometry and high-cadence radial velocities for HD136118 from the HET with archival data from Lick to determine the complete set of orbital...
Benedict, G. Fritz, McArthur, Barbara E., Napiwotzki, Ralf, Harrison, Thomas E., Harris, Hugh C., Nelan, Edmund, ...
We present absolute parallaxes and relative proper motions for the central stars of the planetary nebulae NGC 6853 (The Dumbbell), NGC 7293 (The Helix), Abell 31, and DeHt 5. This paper details our...
HST FGS astrometry - the value of fractional millisecond of arc precision (2008)
Benedict, G. Fritz, McArthur, Barbara E., Bean, Jacob L.
In a few years astrometry with the venerable combination of Hubble Space Telescope and Fine Guidance Sensor will be replaced by SIM, GAIA, and long-baseline interferometry. Until then we remain a...
G. Fritz Benedict, Barbara E. Mcarthur, Otto G. Franz, L. H. Wasserman, E. Nelan, J. Lee, ...
With Hubble Space Telescope Fine Guidance Sensor 3 we have determined a parallax for the white dwarfÈM dwarf interacting binary, Feige 24. The white dwarf (DA) component has an e†ective...
Detection of a Third Planet in the HD 74156 System Using the Hobby-Eberly Telescope (2007)
Bean, Jacob L., McArthur, Barbara E., Benedict, G. Fritz, Armstrong, Amber
We report the discovery of a third planetary mass companion to the G0 star HD 74156. High precision radial velocity measurements made with the Hobby-Eberly Telescope aided the detection of this...
Bean, Jacob L., McArthur, Barbara E., Benedict, G. Fritz, Harrison, Thomas E., Bizyaev, Dmitry, Nelan, Edmund, ...
We have determined a dynamical mass for the companion to HD 33636 which indicates it is a low-mass star instead of an exoplanet. Our result is based on an analysis of Hubble Space Telescope (HST)...
Benedict, G. Fritz, McArthur, Barbara E., Feast, Michael W., Barnes, Thomas G., Harrison, Thomas E., Patterson, Richard J., ...
(abridged) We present new absolute trigonometric parallaxes and relative proper motions for nine Galactic Cepheid variable stars: l Car, zeta Gem, beta Dor, W Sgr, X Sgr, Y Sgr, FF Aql, T Vul, and RT...
The Extrasolar Planet epsilon Eridani b - Orbit and Mass (2006)
Benedict, G. Fritz, McArthur, Barbara E., Gatewood, George, Nelan, Edmund, Cochran, William D., Hatzes, Artie, ...
Hubble Space Telescope observations of the nearby (3.22 pc), K2 V star epsilon Eridani have been combined with ground-based astrometric and radial velocity data to determine the mass of its known...
The Extrasolar Planet e Eridani b: Orbit and mass (2006)
Benedict, G. Fritz, McArthur, Barbara E., Gatewood, George, Nelan, Edmund, Cochran, William D., Hatzes, Artie, ...
Hubble Space Telescope (HST) observations of the nearby (3.22 pc) K2 V star É Eridani have been combined with ground-based astrometric and radial velocity data to determine the mass of its known...
McArthur, Barbara E., Endl, Michael, Cochran, William D., Benedict, G. Fritz, Fischer, Debra A., Marcy, Geoffrey W., ...
We report the detection of the lowest mass extra-solar planet yet found around a Sun-like star - a planet with an \msini of only 14.21 $\pm$ 2.91 Earth masses in an extremely short period orbit...
Benedict, G. Fritz, McArthur, Barbara E., Franz, Otto G., Wasserman, Lawrence H., Henry, Todd J.
With fourteen epochs of fringe tracking data spanning 1.7y from Fine Guidance Sensor 3 we have obtained a parallax (pi_abs=113.1 +- 0.3 mas) and perturbation orbit for Gl 791.2A. Contemporaneous...