Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810

Author(s): Ment, Kristo; Fischer, Debra A; Bakos, Gaspar Aron; Howard, Andrew W; Isaacson, Howard

To refer to this page use: http://arks.princeton.edu/ark:/88435/pr1w421
DC FieldValueLanguage
dc.contributor.authorMent, Kristo-
dc.contributor.authorFischer, Debra A-
dc.contributor.authorBakos, Gaspar Aron-
dc.contributor.authorHoward, Andrew W-
dc.contributor.authorIsaacson, Howard-
dc.date.accessioned2019-04-10T19:31:06Z-
dc.date.available2019-04-10T19:31:06Z-
dc.date.issued2018-11en_US
dc.identifier.citationMent, Kristo, Fischer, Debra A, Bakos, Gaspar, Howard, Andrew W, Isaacson, Howard. (2018). Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810. \aj, 156 (213 - 213. doi:10.3847/1538-3881/aae1f5en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1w421-
dc.description.abstractThe N2K planet search program was designed to exploit the planet-metallicity correlation by searching for gas giant planets orbiting metal-rich stars. Here, we present the radial velocity measurements for 378 N2K target stars that were observed with the HIRES spectrograph at Keck Observatory between 2004 and 2017. With this data set, we announce the discovery of six new gas giant exoplanets: a double-planet system orbiting HD 148164 (M i sin of 1.23 and 5.16 MJUP) and single planet detections around HD 55696 (M i sin = 3.87 MJUP), HD 98736 (M i sin = 2.33 MJUP), HD 203473 (M i sin = 7.8 MJUP), and HD 211810 (M i sin = 0.67 MJUP). These gas giant companions have orbital semimajor axes between 1.0 and 6.2 au and eccentricities ranging from 0.13 to 0.71. We also report evidence for three gravitationally bound companions with M i sin between 20 and 30 MJUP, placing them in the mass range of brown dwarfs, around HD 148284, HD 214823, and HD 217850, and four low-mass stellar companions orbiting HD 3404, HD 24505, HD 98630, and HD 103459. In addition, we present updated orbital parameters for 42 previously announced planets. We also report a nondetection of the putative companion HD 73256 b. Finally, we highlight the most promising candidates for direct imaging and astrometric detection, and we find that many hot Jupiters from our sample could be detectable by state-of-the-art telescopes such as Gaia.en_US
dc.language.isoen_USen_US
dc.relation.ispartofAstronomical Journalen_US
dc.rightsAuthor's manuscripten_US
dc.titleRadial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810en_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.3847/1538-3881/aae1f5-
dc.date.eissued2018-10-18en_US
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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