Dynamical Masses for the Large Magellanic Cloud Massive Binary System [L72] LH 54-425 (2008)
Williams, S. J., Gies, D. R., Henry, T. J., Orosz, J. A., McSwain, M. V., Hillwig, T. C., ...
We present results from an optical spectroscopic investigation of the massive binary system [L72] LH~54-425 in the LH 54 OB association in the Large Magellanic Cloud. We revise the ephemeris of [L72]...
Discovery of Two T Dwarf Companions with the Spitzer Space Telescope (2006)
Luhman, K. L., Patten, B. M., Marengo, M., Schuster, M. T., Hora, J. L., Ellis, R. G., ...
We report the discovery of T dwarf companions to the nearby stars HN Peg (G0V, 18.4 pc, ~0.3 Gyr) and HD 3651 (K0V, 11.1 pc, ~7 Gyr). During an ongoing survey of 5'x5' fields surrounding stars in the...
Calibrating the Solar Dynamo: Magnetic Activity Cycles of Southern Sun-like Stars (2006)
Metcalfe, T. S., Henry, T. J., Knolker, M., Soderblom, D. R.
The solar magnetic activity cycle is responsible for periodic episodes of severe space weather, which can perturb satellite orbits, interfere with communications systems, and bring down power grids....
Trigonometric parallaxes from the Southern Hemisphere (2006)
R. A. Méndez, E. Costa, T. J. Henry, P. A. Ianna
Trigonometric parallaxes from the Southern Hemisphere
First Results from the CHARA Array. IV. The Interferometric Radii of Low-Mass Stars (2006)
Berger, D. H., Gies, D. R., McAlister, H. A., Brummelaar, T. A. Ten, Henry, T. J., Sturmann, J., ...
We have measured the angular diameters of six M dwarfs with the CHARA Array, a long-baseline optical interferometer located at Mount Wilson Observatory. Spectral types range from M1.0 V to M3.0 V and...
Trigonometric parallaxes from the Southern Hemisphere (2006)
Costa , E., Henry , T. J., Ianna , P. A., Méndez , R. A.
We present an outline of the main motivations, goals, procedures, and first scientific results of a dedicated astrometric program aimed at determining trigonometric parallaxes for new nearby (D < 25...
Three active M dwarfs within 8 pc: L 449-1, L 43-72, & LP 949-15 (2005)
Curto, G. Lo, Méndez, R. A., Hambaryan, V., Costa, E., Henry, T. J., ...
Three nearby star candidates were selected as bright 2MASS point sources without associated optical sources, i.e. with potentially large proper motions, subsequently confirmed by multi-epoch optical...
Golimowski, D. A., Henry, T. J., Krist, J. E., Dieterich, S., Ford, H. C., Illingworth, G. D., ...
We report the detections of low-mass companions to five M and L dwarfs within 10 pc of the Sun using the Hubble Space Telescope (HST) Near-Infrared Camera and Multi-Object Spectrometer (NICMOS)....
Hambly, N. C., Henry, T. J., Subasavage, J., Brown, M.
Five new objects with proper motions between 1.0 arcsec/yr and 2.6 arcsec/yr have been discovered via a new RECONS search for high proper motion stars utilizing the SuperCOSMOS Sky Survey. The first...
A Near-Infrared Wide-Field Proper Motion Search for Brown Dwarfs (2002)
Hinz, J. L., McCarthy, D. W., Simons, D. A., Henry, T. J., Kirkpatrick, J. D., McGuire, P. C.
A common proper motion survey of M dwarf stars within 8 pc of the Sun reveals no new stellar or brown dwarf companions at wide separations (~100-1400 AU). This survey tests whether the brown dwarf...
Benedict, G. F., McArthur, B. E., Franz, O. G., Wasserman, L. H., Henry, T. J., Takato, T., ...
We present an analysis of astrometric data from FGS 3, a white-light interferometer on {\it HST}, and of radial velocity data from two ground-based campaigns. We model the astrometric and radial...