An Eccentric Hot Jupiter Orbiting the Subgiant HD 185269

Abstract

We report the detection of a Jupiter-mass planet in a 6.838 day orbit around the 1.28 solar mass subgiant HD 185269. The eccentricity of HD 185269b (e = 0.30) is unusually large compared to other planets within 0.1 AU of their stars. Photometric observations demonstrate that the star is constant to +/-0.0001 mag on the radial velocity period, strengthening our interpretation of a planetary companion. This planet was detected as part of our radial velocity survey of evolved stars located on the subgiant branch of the H-R diagram--also known as the Hertzsprung Gap. These stars, which have masses between 1.2 and 2.5 solar masses, play an important role in the investigation of the frequency of extrasolar planets as a function of stellar mass.

18 pages, 4 figures, 3 tables, ApJ in press (scheduled for Dec 2006, v652n2)

References in corpus (26)

• Theoretical isochrones in several photometric systems I. Johnson-Cousins-Glass, HST/WFPC2, HST/NICMOS, Washington, and ESO Imaging Survey filter sets
• Spectroscopic [Fe/H] for 98 extra-solar planet-host stars: Exploring the probability of planet formation
• Catalog of Nearby Exoplanets
• No planet for HD 166435
• Models of Giant Planet formation with migration and disc evolution
• Chromospheric CaII Emission in Nearby F, G, K, and M stars
• ELODIE metallicity-biased search for transiting Hot Jupiters II. A very hot Jupiter transiting the bright K star HD189733
• Towards a deterministic model of planetary formation. III. Mass distribution of short-period planets around stars of various masses
• Core-Accretion Model Predicts Few Jovian-Mass Planets Orbiting Red Dwarfs
• The N2K Consortium. II. A Transiting Hot Saturn Around HD 149026 With a Large Dense Core
• Radial Velocity Jitter in Stars from the California and Carnegie Planet Search at Keck Observatory
• Exploring The Frequency Of Close-In Jovian Planets Around M Dwarfs
• Isochrone ages for field dwarfs: method and application to the age-metallicity relation
• On the tidal interaction of a solar-type star with an orbiting companion: Excitation of g mode oscillation and orbital evolution
• The CORALIE survey for southern extra-solar planets VIII. The very low-mass companions of HD141937, HD162020, HD168443, HD202206: brown dwarfs or superplanets?
• Do We Know of Any Maunder Minimum Stars?
• Parent Stars of Extrasolar Planets VII: New Abundance Analyses of 30 Systems
• Extrasolar planets and brown dwarfs around A-F type stars. I. Performances of radial velocity measurements, first analyses of variations
• Searching for Planets in the Hyades III: The Quest for Short-Period Planets
• Precise radial velocities of giant stars: I. Stable stars
• A Strategy for Identifying the Grid Stars for the Space Interferometry Mission (SIM)
• Elodie metallicity-biased search for transiting Hot Jupiters I. Two Hot Jupiters orbiting the slightly evolved stars HD118203 and HD149143
• Detection of Intermediate-Period Transiting Planets with a Network of Small Telescopes: transitsearch.org
• The N2K Consortium VI: Doppler Shifts Without Templates and Three New Short-Period Planets
• The CORALIE survey for southern extra-solar planets. X. A Hot Jupiter orbiting HD73256
• On the link between rotation, chromospheric activity and Li abundance in subgiant stars

Cited by in corpus (81)

• The Occurrence and Architecture of Exoplanetary Systems
• Tidal Evolution of Close-in Extra-Solar Planets
• The Frequency of Hot Jupiters Orbiting Nearby Solar-Type Stars
• A New Planet Around an M Dwarf: Revealing a Correlation Between Exoplanets and Stellar Mass
• Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants
• Precise Radial Velocities of Giant Stars VII. Occurrence Rate of Giant Extrasolar Planets as a Function of Mass and Metallicity
• Observational Evidence for Tidal Destruction of Exoplanets
• Retired A Stars and Their Companions. III. Comparing the Mass-Period Distributions of Planets Around A-Type Stars and Sun-Like Stars
• Calibration of Equilibrium Tide Theory for Extrasolar Planet Systems
• Evolved stars hint to an external origin of enhanced metallicity in planet-hosting stars
• Extrasolar planets in stellar multiple systems
• On the Orbits of Low-mass Companions to White Dwarfs and the Fates of the Known Exoplanets
• Retired A Stars and Their Companions: Eighteen New Jovian Planets
• Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars
• Double-blind test program for astrometric planet detection with Gaia
• Extrasolar Giant Planets and X-ray Activity
• The Twenty-Five Year Lick Planet Search
• A Long-Period Jupiter-Mass Planet Orbiting the Nearby M Dwarf GJ849
• Extrasolar planets and brown dwarfs around A-F type stars VI. High precision RV survey of early type dwarfs with HARPS
• Calibration of Equilibrium Tide Theory for Extrasolar Planet Systems II
• Retired A Stars Revisited: An Updated Giant Planet Occurrence Rate as a Function of Stellar Metallicity and Mass
• Retired A Stars and Their Companions VI. A Pair of Interacting Exoplanet Pairs Around the Subgiants 24 Sextanis and HD200964
• Mass constraints on substellar companion candidates from the re-reduced Hipparcos intermediate astrometric data: Nine confirmed planets and two confirmed brown dwarfs
• A Keck HIRES Doppler Search for Planets Orbiting Metal-Poor Dwarfs. II. On the Frequency of Giant Planets in the Metal-Poor Regime
• The Pan-Pacific Planet Search. I. A Giant Planet Orbiting 7 CMa
• A hot Jupiter orbiting the 1.7 Msun Subgiant HD102956
• Retired A Stars and Their Companions II: Jovian planets orbiting kappa Coronae Borealis and HD167042
• "Retired" Planet Hosts: Not So Massive, Maybe Just Portly After Lunch
• GJ 832c: A super-earth in the habitable zone
• The metallicity signature of evolved stars with planets
• Precise radial velocities of giant stars. IV. A correlation between surface gravity and radial velocity variation and a statistical investigation of companion properties
• The Prograde Orbit of Exoplanet TrES-2b
• The Role of Planet Accretion in Creating the Next Generation of Red Giant Rapid Rotators
• A lucky imaging multiplicity study of exoplanet host stars
• The Chemical Compositions of Stars with Planets: A Review
• Eleven Exoplanet Host Star Angular Diameters from the CHARA Array
• Solar System Physics for Exoplanet Research
• Two Exoplanets Discovered at Keck Observatory
• Astrophysical Insights into Radial Velocity Jitter from an Analysis of 600 Planet-search Stars
• KELT-11b: A Highly Inflated Sub-Saturn Exoplanet Transiting the V=8 Subgiant HD 93396
• The Growth & Migration of Jovian Planets in Evolving Protostellar Disks with Dead Zones
• Spatially Resolved Images of Dust Belt(s) Around the Planet-hosting Subgiant Kappa CrB
• Herschel Observations of Debris Discs Orbiting Planet-hosting Subgiants
• The Physical Parameters of the Retired A Star HD185351
• Giant planets around two intermediate-mass evolved stars and confirmation of the planetary nature of HIP67851 c
• Resonances Required: Dynamical Analysis of the 24 Sex and HD 200964 Planetary Systems
• Radial velocities from the N2K Project: 6 new cold gas giant planets orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810
• The Pan-Pacific Planet Search. II. Confirmation of a two-planet system around HD 121056
• Reassessment of the Null Result of the HST Search for Planets in 47 Tucanae
• Determining the true mass of radial-velocity exoplanets with Gaia: 9 planet candidates in the brown-dwarf/stellar regime and 27 confirmed planets
• The masses of retired A stars with asteroseismology: Kepler and K2 observations of exoplanet hosts
• The Pan-Pacific Planet Search. IV. Two super-Jupiters in a 3:5 resonance orbiting the giant star HD33844
• Retired A Stars and Their Companions VIII: 15 New Planetary Signals Around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts
• Asteroseismic masses of retired planet-hosting A-stars using SONG
• Precise radial velocities of giant stars V. A brown dwarf and a planet orbiting the K giant stars tau Gem and 91 Aqr
• Beyond the Main Sequence: Testing the accuracy of stellar masses predicted by the PARSEC evolutionary tracks
• The Pan-Pacific Planet Search VI: Giant planets orbiting HD 86950 and HD 222076
• Estimating the masses of extra-solar planets
• The Pan-Pacific Planet Search. VIII. Complete results and the occurrence rate of planets around low-luminosity giants
• Ruling Out Possible Secondary Stars to Exoplanet Host Stars Using the CHARA Array
• Elodie metallicity-biased search for transiting Hot Jupiters IV. Intermediate period planets orbiting the stars HD43691 and HD132406
• Predicting the incidence of planets and debris discs as a function of stellar mass
• Precise radial velocities of giant stars IX. HD 59686 Ab: a massive circumstellar planet orbiting a giant star in a ~13.6 au eccentric binary system
• Planets around the evolved stars 24 Booties and $\gamma$ Libra: A 30d-period planet and a double giant-planet system in possible 7:3 MMR
• The TRENDS High-Contrast Imaging Survey. II. Direct Detection of the HD 8375 Tertiary
• Precise radial velocities of giant stars. XI. Two brown dwarfs in 6:1 mean motion resonance around the K giant star $\nu$ Ophiuchi
• The Pan-Pacific Planet Search V. Fundamental Parameters for 164 Evolved Stars
• Four Jovian planets around low-luminosity giant stars observed by the EXPRESS and PPPS
• Radio Emissions from Substellar Companions of Evolved Cool Stars
• CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars
• Extrasolar planets and brown dwarfs around A-F type stars - VII. Theta Cygni radial velocity variations: planets or stellar phenomenon?
• Asteroseismic masses of four evolved planet-hosting stars using SONG and TESS: resolving the retired A-star mass controversy
• The Stability and Dynamics of Planets in Tight Binary Systems
• Detection and Characterization of Extrasolar Planets through Doppler Spectroscopy
• Regular Radial Velocity Variations in Nine G- and K-type Giant Stars: Eight Planets and One Planet Candidate
• Properties of F Stars with Stable Radial Velocity Timeseries: A Useful Metric for Selecting Low-jitter F Stars
• The Weihai Observatory search for close-in planets orbiting giant stars
• TIC~257060897b: an inflated, low-density, hot-Jupiter transiting a rapidly evolving subgiant star
• Measuring the Orbital Parameters of Radial Velocity Systems in Mean Motion Resonance---a Case Study of HD 200964
• Planetary Transits and Tidal Evolution
• Tidal star-planet interaction and its observed impact on stellar activity in planet-hosting wide binary systems