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The California Planet Survey . I . Four New Giant Exoplanets
| Content Provider | Semantic Scholar |
|---|---|
| Author | Howard, Andrew W. Johnson, J. A. Marcy, Geoffrey W. Fischer, Debra A. Wright, Jason T. Bernat, David Henry, Gregory W. Peek, Kathryn M. G. Isaacson, Howard Apps, Kevin Endl, Michael Cochran, William D. Valenti, Jeff A. Anderson, Jay Piskunov, Nikolai |
| Copyright Year | 2010 |
| Abstract | We present precise Doppler measurements of four stars obtained during the past decade at Keck Observatory by the California Planet Survey (CPS). These stars, namely, HD 34445, HD 126614, HD13931, and Gl 179, all show evidence for a single planet in Keplerian motion. We also present Doppler measurements from the Hobby-Eberly Telescope (HET) for two of the stars, HD34445 and Gl 179, that confirm the Keck detections and significantly refine the orbital parameters. These planets add to the statistical properties of giant planets orbiting near or beyond the ice line, and merit followup by astrometry, imaging, and space-borne spectroscopy. Their orbital parameters span wide ranges of planetary minimum mass (M sin i= 0.38–1.9MJup), orbital period (P =2.87–11.5yr), semi-major axis (a =2.1–5.2AU), and eccentricity (e = 0.02–0.41). HD34445b (P =2.87 yr, M sin i= 0.79MJup, e= 0.27) is a massive planet orbiting an old, G-type star. We announce a planet, HD126614Ab, and an M dwarf, HD 126614B, orbiting the metal-rich star HD 126614 (which we now refer to as HD126614A). The planet, HD 126614Ab, has minimum mass M sin i= 0.38MJup and orbits the stellar primary with period P =3.41 yr and orbital separation a= 2.3AU. The faint M dwarf companion, HD 126614B, is separated from the stellar primary by 489mas (33AU) and was discovered with direct observations using adaptive optics and the PHARO camera at Palomar Observatory. The stellar primary in this new system, HD126614A, has the highest measured metallicity ([Fe/H] =+0.56) of any known planetbearing star. HD 13931b (P = 11.5 yr, M sin i =1.88MJup, e=0.02) is a Jupiter analog orbiting a near solar twin. Gl 179b (P =6.3 yr, M sin i =0.82MJup, e= 0.21) is a massive planet orbiting a faint M dwarf. The high metallicity of Gl 179 is consistent with the planet-metallicity correlation among M dwarfs, as documented recently by Johnson & Apps. Subject headings: planetary systems — stars: individual (HD 34445, HD126614, HD 13931, Gl 179) — binaries: visual — techniques: radial velocity — techniques: photometric — techniques: high angular resolution |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.astro.uu.se/~piskunov/TEACHING/ASTROPHYSICS_2/Planet2_Ghaderi.pdf |
| Alternate Webpage(s) | http://exoplanets.org/papers/sixpack.pdf |
| Alternate Webpage(s) | http://schwab.tsuniv.edu/papers/apj/cps1/reprint.pdf |
| Alternate Webpage(s) | http://authors.library.caltech.edu/20594/1/Howard2010p11600Astrophys_J.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Analog Apache Axis Axis vertebra Command & Conquer:Yuri's Revenge DWARF Dietary Iron Distance (graph theory) Document completion status - Documented Doppler effect Encephalitis Virus, California Field electron emission GUCY2C protein, human Gold Molecular orbital Multi-agent system Ocular orbit Pharo Planetary scanner Sensor Span Distance Squamous intraepithelial lesion Stars, Celestial Stellar (payment network) Stevens-Johnson Syndrome |
| Content Type | Text |
| Resource Type | Article |
