Five Long-period Extrasolar Planets in Eccentric Orbits from the Magellan Planet Search Program
Abstract
Five new planets orbiting G and K dwarfs have emerged from the Magellan velocity survey. These companions are Jovian-mass planets in eccentric (e >= 0.24) intermediate- and long-period orbits. HD 86226b orbits a solar metallicity G2 dwarf. The MP sin i mass of the planet is 1.5 M JUP, the semimajor axis is 2.6 AU, and the eccentricity is 0.73. HD 129445b orbits a metal-rich G6 dwarf. The minimum mass of the planet is MP sin i = 1.6 M JUP, the semimajor axis is 2.9 AU, and the eccentricity is 0.70. HD 164604b orbits a K2 dwarf. The MP sin i mass is 2.7 M JUP, the semimajor axis is 1.3 AU, and the eccentricity is 0.24. HD 175167b orbits a metal-rich G5 star. The MP sin i mass is 7.8 M JUP, the semimajor axis is 2.4 AU, and the eccentricity is 0.54. HD 152079b orbits a G6 dwarf. The MP sin i mass of the planet is 3 M JUP, the semimajor axis is 3.2 AU, and the eccentricity is 0.60.
Based on observations obtained with the Magellan Telescopes, operated by the Carnegie Institution, Harvard University, University of Michigan, University of Arizona, and the Massachusetts Institute of Technology.- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 2010
- DOI:
- 10.1088/0004-637X/711/2/1229
- arXiv:
- arXiv:1001.4093
- Bibcode:
- 2010ApJ...711.1229A
- Keywords:
-
- planetary systems;
- stars: individual: HD 86226 HD 129445 HD 164604 HD 175167 HD 152079;
- Astrophysics - Earth and Planetary Astrophysics
- E-Print:
- Accepted for publication on ApJ, 27 pages, 9 figures
