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Full-Text Articles in Physical Sciences and Mathematics
The Nasa-Uc-Uh Eta-Earth Program. Iv. A Low-Mass Planet Orbiting An M Dwarf 3.6 Pc From Earth, Andrew W. Howard, Geoffrey W. Marcy, Debra A. Fischer, Howard Isaacson, Philip S. Muirhead, Gregory W. Henry, Tabetha S. Boyajian, Kaspar Von Braun, Juliette C. Becker, Jason T. Wright, John Asher Johnson
The Nasa-Uc-Uh Eta-Earth Program. Iv. A Low-Mass Planet Orbiting An M Dwarf 3.6 Pc From Earth, Andrew W. Howard, Geoffrey W. Marcy, Debra A. Fischer, Howard Isaacson, Philip S. Muirhead, Gregory W. Henry, Tabetha S. Boyajian, Kaspar Von Braun, Juliette C. Becker, Jason T. Wright, John Asher Johnson
Information Systems and Engineering Management Research Publications
We report the discovery of a low-mass planet orbiting Gl 15 A based on radial velocities from the Eta-Earth Survey using HIRES at Keck Observatory. Gl 15 Ab is a planet with minimum mass Msin i = 5.35 ± 0.75 M⊕, orbital period P = 11.4433 ± 0.0016 days, and an orbit that is consistent with circular. We characterize the host star using a variety of techniques. Photometric observations at Fairborn Observatory show no evidence for rotational modulation of spots at the orbital period to a limit of ∼0.1 mmag, thus supporting the existence of the planet. We detect a …
A Four-Planet System Orbiting The K0v Star Hd 141399, Steve Vogt, R. Paul Butler, Eugenio J. Rivera, Robert I. Kibrick, Jennifer Burt, Russell Hanson, Stefano Meschiari, Gregory W. Henry, Gregory Laughlin
A Four-Planet System Orbiting The K0v Star Hd 141399, Steve Vogt, R. Paul Butler, Eugenio J. Rivera, Robert I. Kibrick, Jennifer Burt, Russell Hanson, Stefano Meschiari, Gregory W. Henry, Gregory Laughlin
Information Systems and Engineering Management Research Publications
We present precision radial velocity (RV) data sets from Keck-HIRES and from Lick Observatory's new Automated Planet Finder Telescope and Levy Spectrometer on Mt. Hamilton that reveal a multiple-planet system orbiting the nearby, slightly evolved, K-type star HD 141399. Our 91 observations over 10.5 yr suggest the presence of four planets with orbital periods of 94.35, 202.08, 1070.35, and 3717.35 days and minimum masses of 0.46, 1.36, 1.22, and 0.69 MJ, respectively. The orbital eccentricities of the three inner planets are small, and the phase curves are well sampled. The inner two planets lie just outside the 2:1 resonance, suggesting …