Journal
ASTROPHYSICAL JOURNAL
Volume 800, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/800/1/22
Keywords
planetary systems; stars: individual (HD 145934, GJ 849); techniques: radial velocities
Categories
Funding
- NASA Keck PI Data Awards [2007B_N095Hr, 2010A_N147Hr, 2011AB_N141Hr, 2012A_N129Hr]
- NASA Origins of Solar Systems grant [NNX09AB35G]
- NASA Astrobiology Institute grant [NNA09DA76A]
- Center for Exoplanets and Habitable Worlds (Pennsylvania State University)
- Center for Exoplanets and Habitable Worlds (Eberly College of Science)
- Center for Exoplanets and Habitable Worlds (Pennsylvania Space Grant Consortium)
- NSF [AST-1211441]
- NASA [120906, NNX09AB35G] Funding Source: Federal RePORTER
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1211441] Funding Source: National Science Foundation
Ask authors/readers for more resources
We present an update to seven stars with long-period planets or planetary candidates using new and archival radial velocities from Keck-HIRES and literature velocities from other telescopes. Our updated analysis better constrains orbital parameters for these planets, four of which are known multi-planet systems. HD 24040 b and HD 183263 c are super-Jupiters with circular orbits and periods longer than 8 yr. We present a previously unseen linear trend in the residuals of HD 66428 indicative of an additional planetary companion. We confirm that GJ 849 is a multi-planet system and find a good orbital solution for the c component: it is a 1 M-Jup planet in a 15 yr orbit (the longest known for a planet orbiting an M dwarf). We update the HD 74156 double-planet system. We also announce the detection of HD 145934 b, a 2 M-Jup planet in a 7.5 yr orbit around a giant star. Two of our stars, HD 187123 and HD 217107, at present host the only known examples of systems comprising a hot Jupiter and a planet with a well constrained period greater than 5 yr, and with no evidence of giant planets in between. Our enlargement and improvement of long-period planet parameters will aid future analysis of origins, diversity, and evolution of planetary systems.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available