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Combining Astrometry and Spectroscopy
Guillermo Torres
Orbital solutions for binary or multiple stellar systems that combine astrometry (e.g., position angles and angular separations) with spectroscopy (radial velocities) have importan…
Spatially Resolved STIS Spectroscopy of Betelgeuse's Outer Atmosphere
A. Lobel, J. Aufdenberg, A. K. Dupree +3
We present spatially resolved spectra observed with HST-STIS of the upper chromosphere and dust envelope of Alpha Orionis (M2 Iab). In the fall of 2002 a set of five high-resolutio…
A double-lined spectroscopic orbit for the young star HD 34700
Guillermo Torres
We report high-resolution spectroscopic observations of the young star HD 34700, which confirm it to be a double-lined spectroscopic binary. We derive an accurate orbital solution…
New Data and Improved Parameters for the Transiting Planet OGLE-TR-56b
Guillermo Torres, Maciej Konacki, Dimitar D. Sasselov +1
We report new spectroscopic observations of the recently discovered transiting planet OGLE-TR-56b with the Keck/HIRES instrument. Our radial velocity measurements with errors of ~1…
The Chandra Multiwavelength Project: Optical Followup of Serendipitous Chandra Sources
Paul J. Green, J. D. Silverman, R. A. Cameron +12
We present followup optical g', r', and i', imaging and spectroscopy of serendipitous X-ray sources detected in 6 archival Chandra, images included in the Chandra, Multiwavelength…
High-resolution spectroscopic follow-up of OGLE planetary transit candidates in the Galactic bulge: two possible Jupiter-mass planets and two blends
Maciej Konacki, Guillermo Torres, Dimitar D. Sasselov +1
We report the results of our campaign to follow-up spectroscopically several candidate extrasolar transiting planets from the OGLE-III survey in the direction of the Galactic cente…