Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810
@article{Ment2018RadialVF,
title={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={Kristo Ment and Debra A. Fischer and G'asp'ar 'A. Bakos and Andrew W. Howard and Howard T. Isaacson},
journal={The Astronomical Journal},
year={2018}
}The 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 ($M \sin i$ of 1.23 and 5.16 M$_{\rm JUP}$) and single planet…
Figures and Tables from this paper
table 1 
table 1 
figure 1 
table 2 
figure 2 
figure 3 
figure 4 
figure 5 
table 5 
figure 6 
table 6 
figure 7 
table 7 
figure 8 
table 8 
figure 9 
table 9 
figure 10 
table 10 
figure 11 
figure 12 
table 12 
table 12 
table 12 
figure 13 
figure 14 
figure 15 
figure 16 
figure 17 
figure 18 
figure 19 
figure 20 
figure 21 
figure 22 
figure 23 
figure 24 
figure 25 
figure 26 
figure 27 
figure 28 
figure 29 
figure 30 
figure 31 
figure 32 
figure 33 
figure 34 
figure 35 
figure 36 
figure 37 
figure 38 
figure 39 
figure 40 
figure 41 
figure 42 
figure 43 
figure 44 
figure 45 
figure 46 
figure 47 
figure 48 
figure 49
12 Citations
Orbital Refinement and Stellar Properties for the HD 9446, HD 43691, and HD 179079 Planetary Systems
- Physics
- 2020
The Transit Ephemeris Refinement and Monitoring Survey is a project that aims to detect transits of intermediate-long period planets by refining orbital parameters of the known radial velocity…
Precise Masses and Orbits for Nine Radial-velocity Exoplanets
- PhysicsThe Astronomical Journal
- 2021
Radial-velocity (RV) surveys have discovered hundreds of exoplanetary systems but suffer from a fundamental degeneracy between planet mass M p and orbital inclination i. In this paper, we resolve…
Understanding the origin of white dwarf atmospheric pollution by dynamical simulations based on detected three-planet systems
- Physics
- 2020
Between 25-50 % of white dwarfs (WD) present atmospheric pollution by metals, mainly by rocky material, which has been detected as gas/dust discs, or in the form of photometric transits in some WDs.…
Reinvestigation of the Multiepoch Direct Detections of HD 88133 b and Upsilon Andromedae b
- PhysicsThe Astronomical Journal
- 2021
We reanalyze the multiepoch direct detections of HD 88133 b and ups And b that were published in Piskorz et al. (2016) and Piskorz et al. (2017), respectively. Using simulations to attempt to…
Revisited mass-radius relations for exoplanets below 120 M⊕
- Physics
- 2020
The masses and radii of exoplanets are fundamental quantities needed for their characterisation. Studying the different populations of exoplanets is important for understanding the demographics of…
On the role of resonances in polluting white dwarfs by asteroids
- Physics
- 2021
Pollution of white dwarf atmospheres may be caused by asteroids that originate from the locations of secular and mean-motion resonances in planetary systems. Asteroids in these locations experience…
Resilient habitability of nearby exoplanet systems
- Physics
- 2019
We investigate the possibility of finding Earth-like planets in the habitable zone of 34 nearby FGK-dwarfs, each known to host one giant planet exterior to their habitable zone detected by RV. First…
3D magneto-hydrodynamical simulations of stellar convective noise for improved exoplanet detection
- Physics
- 2020
Convective motions at the stellar surface generate a stochastic colored noise source in the radial velocity (RV) data. This noise impedes the detection of small exoplanets. Moreover, the unknown…
Non-sinusoidal transit timing variations for the exoplanet HAT-P-12b
- Physics
- 2020
Considering the importance of investigating the transit timing variations (TTVs) of transiting exoplanets, we present a follow-up study of HAT-P-12b. We include six new light curves observed between…
Ca II H&K stellar activity parameter: a proxy for extreme ultraviolet stellar fluxes
- Physics
- 2020
Atmospheric escape is an important factor shaping the exoplanet population and hence drives our understanding of planet formation. Atmospheric escape from giant planets is driven primarily by the…
References
SHOWING 1-10 OF 72 REFERENCES
Newly Discovered Planets Orbiting HD 5319, HD 11506, HD 75784 and HD 10442 from the N2K Consortium
- Physics
- 2014
Initially designed to discover short-period planets, the N2K campaign has since evolved to discover new worlds at large separations from their host stars. Detecting such worlds will help determine…
The N2K Consortium. II. A Transiting Hot Saturn around HD 149026 with a Large Dense Core
- Physics
- 2005
Doppler measurements from Subaru and Keck have revealed radial velocity variations in the V = 8.15, G0 IV star HD 149026 consistent with a Saturn-mass planet in a 2.8766 day orbit. Photometric…
TWO JUPITER-MASS PLANETS ORBITING HD 154672 AND HD 205739*
- Physics
- 2008
We report the detection of the first two planets from the N2K Doppler planet search program at the Magellan telescopes. The first planet has a mass of Msin i = 4.96 M Jup and orbits the G3 IV star HD…
The N2K Consortium. III. Short-Period Planets Orbiting HD 149143 and HD 109749
- Physics
- 2006
We report the detection of two short-period planets discovered at Keck Observatory. HD 149143 is a metal-rich G0 IV star with a planet of M sin i = 1.33M_J and an orbital radius of 0.053 AU. The…
The N2K Consortium. I. A Hot Saturn Planet Orbiting HD 88133
- Physics
- 2005
The N2K ("next 2000") consortium is carrying out a distributed observing campaign with the Keck, Magellan, and Subaru telescopes, as well as the automatic photometric telescopes of Fairborn…
THE LICK-CARNEGIE SURVEY: A NEW TWO-PLANET SYSTEM AROUND THE STAR HD 207832
- Physics
- 2012
Keck/HIRES precision radial velocities of HD 207832 indicate the presence of two Jovian-type planetary companions in Keplerian orbits around this G star. The planets have minimum masses of Msin i =…
Old, Rich, and Eccentric: Two Jovian Planets Orbiting Evolved Metal-Rich Stars
- Physics
- 2009
We present radial velocity measurements of two stars observed as part of the Lick Subgiants Planet Search and the Keck N2K survey. Variations in the radial velocities of both stars reveal the…
Five Intermediate-Period Planets from the N2K Sample
- Physics
- 2007
We report the detection of five Jovian-mass planets orbiting high-metallicity stars. Four of these stars were first observed as part of the N2K program, and exhibited low rms velocity scatter after…
A High-eccentricity Component in the Double-planet System around HD 163607 and a Planet around HD 164509
- Physics
- 2012
We report the detection of three new exoplanets from Keck Observatory. HD 163607 is a metal-rich G5IV star with two planets. The inner planet has an observed orbital period of 75.29 ± 0.02 days, a…
The Planet-Metallicity Correlation
- Physics
- 2005
We have recently carried out spectral synthesis modeling to determine Teff, log g, v sin i, and [Fe/H] for 1040 FGK-type stars on the Keck, Lick, and Anglo-Australian Telescope planet search…