Five Longperiod 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 Jovianmass planets in eccentric (e >= 0.24) intermediate and longperiod orbits. HD 86226b orbits a solar metallicity G2 dwarf. The M_{P} 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 metalrich G6 dwarf. The minimum mass of the planet is M_{P} 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 M_{P} 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 metalrich G5 star. The M_{P} 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 M_{P} 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:
 10.1088/0004637X/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
 EPrint:
 Accepted for publication on ApJ, 27 pages, 9 figures