4 papers · 1 filter
Five Planets Orbiting 55 Cancri
Debra A. Fischer, Geoffrey W. Marcy, R. Paul Butler +9
We report 18 years of Doppler shift measurements of a nearby star, 55 Cancri, that exhibit strong evidence for five orbiting planets. The four previously reported planets are stron…
HD 17156b: A Transiting Planet with a 21.2 Day Period and an Eccentric Orbit
M. Barbieri, R. Alonso, G. Laughlin +8
We report the detection of transits by the 3.1 M_Jup companion to the V=8.17 G0V star HD 17156. The transit was observed by three independant observers on Sept. 9/10, 2007 (two in…
On the Formation of Brown Dwarfs
Ing-Guey Jiang, G. Laughlin, D. N. C. Lin
The observational properties of brown dwarfs pose challenges to the theory of star formation. Because their mass is much smaller than the typical Jeans mass of interstellar clouds,…
On the Search For Transits of the Planets Orbiting Gl 876
P. D. Shankland, E. J. Rivera, G. Laughlin +14
We report the results of a globally coordinated photometric campaign to search for transits by the P ~ 30 d and P ~ 60 d outer planets of the 3-planet system orbiting the nearby M-…