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- Center for Astrophysics Harvard & SmithsonianUS68 papers
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5 papers · 2 filters
Infrared Spectroscopy of Symbiotic Stars. IV. V2116 Ophiuchi/GX 1+4, The Neutron Star Symbiotic
Kenneth H. Hinkle, Francis C. Fekel, Richard R. Joyce +3
We have computed, based on 17 infrared radial velocities, the first set of orbital elements for the M giant in the symbiotic binary V2116 Ophiuchi. The giant's companion is a neutr…
A ~ 7.5 Earth-Mass Planet Orbiting the Nearby Star, GJ 876
E. J. Rivera, J. J. Lissauer, R. P. Butler +6
High precision, high cadence radial velocity monitoring over the past 8 years at the W. M. Keck Observatory reveals evidence for a third planet orbiting the nearby (4.69 pc) dM4 st…
The N2K Consortium. II. A Transiting Hot Saturn Around HD 149026 With a Large Dense Core
B. Sato, D. A. Fischer, G. W. Henry +18
Doppler measurements from Subaru and Keck have revealed radial velocity variations in the V=8.15, G0IV star HD 149026 consistent with a Saturn-Mass planet in a 2.8766 day orbit. Ph…
System Parameters of the Transiting Extrasolar Planet HD 209458b
Robert A. Wittenmyer, William F. Welsh, Jerome A. Orosz +10
We derive improved system parameters for the HD 209458 system using a model that simultaneously fits both photometric transit and radial velocity observations. The photometry consi…
Long period variables in the globular cluster 47 Tuc: radial velocity variations
T. Lebzelter, P. R. Wood, K. H. Hinkle +2
We present near infrared velocity curves for 12 long period variables (LPVs) in the globular cluster 47 Tuc (NGC 104). New light curves are also presented for these variables. Resu…