Tracking Advanced Planetary Systems with HARPS-N (TAPAS). I. A multiple planetary system around the red giant star TYC 1422-614-1

Abstract

Context. Stars that have evolved-off the Main Sequence are crucial in expanding the frontiers of knowledge on exoplanets toward higher stellar masses, and to constrain star-planet interaction mechanisms. These stars, however suffer from intrinsic activity that complicates the interpretation of precise radial velocity measurement and are often avoided in planet searches. We have, over the last 10 years, monitored about 1000 evolved stars for radial velocity variations in search for low-mass companions under the Penn State - Toruń Centre for Astronomy Planet Search with the Hobby-Eberly Telescope. Selected prospective candidates that required higher RV precision meassurements have been followed with HARPS-N at the 3.6 m Telescopio Nazionale Galileo. Aims. To detect planetary systems around evolved stars, to be able to build sound statistics on the frequency and intrinsic nature of these systems, and to deliver in-depth studies of selected planetary systems with evidences of star-planet interaction processes. Methods. We have obtained for TYC 1422-614-1 69 epochs of precise radial velocity measurements collected over 3651 days with the Hobby-Eberly Telescope, and 17 epochs of ultra precise HARPS-N data collected over 408 days. We have complemented these RV data with photometric time-series from the All Sky Automatic Survey archive. Results. We report the discovery of a multiple planetary system around the evolved K2 giant star TYC 1422-614-1. The system orbiting the 1.15 M${}_{\odot }$ star is composed of a planet with mass m$sini$=2.5 M${}_J$ in a 0.69 AU orbit, and a planet/brown dwarf with m$sini$=10 M${}_J$ in a 1.37 AU orbit. The multiple planetary system orbiting TYC 1422-614-1 is the first finding of the TAPAS project, a HARPS-N monitoring of evolved planetary systems identified with the Hobby-Eberly Telescope.

26 pages, 7 figures. Accepted by Astronomy and Astrophysics

References in corpus (71)

• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• Habitable Zones Around Main-Sequence Stars: New Estimates
• The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs
• A Closely-Packed System of Low-Mass, Low-Density Planets Transiting Kepler-11
• The CORALIE survey for southern extra-solar planets VII. Two short-period Saturnian companions to HD108147 and HD168746
• Extrasolar planet population synthesis I: Method, formation tracks and mass-distance distribution
• Validation of Kepler's Multiple Planet Candidates. III: Light Curve Analysis & Announcement of Hundreds of New Multi-planet Systems
• Chromospheric Activity and Jitter Measurements for 2630 Stars on the California Planet Search
• Basic physical parameters of a selected sample of evolved stars
• Are There Unstable Planetary Systems Around White Dwarfs?
• Scaled solar tracks and isochrones in a large region of the Z-Y plane I. From the ZAMS to the TP-AGB end for 0.15 - 2.5 Mo stars
• How Dry is the Brown Dwarf Desert?: Quantifying the Relative Number of Planets, Brown Dwarfs and Stellar Companions around Nearby Sun-like Stars
• The properties of brown dwarfs and low-mass hydrogen-burning stars formed by disc fragmentation
• A Planetary Companion to gamma Cephei A
• Stellar Spin-Orbit Misalignment in a Multiplanet System
• The Orbital Evolution of Gas Giant Planets around Giant Stars
• Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants
• Five Planets Orbiting 55 Cancri
• Asteroseismology of red giants from the first four months of Kepler data: Fundamental parameters
• Planets around evolved intermediate-mass stars. I. Two substellar companions in the open clusters NGC 2423 and NGC 4349
• An Earth-sized planet with an Earth-like density
• Hot Jupiters and Cool Stars
• Efficient fitting of multiplanet Keplerian models to radial velocity and astrometry data
• Can Planets survive Stellar Evolution?
• Six New Planets from the Keck Precision Velocity Survey
• A pair of planets around HD 202206 or a circumbinary planet?
• Fluxes in Hαand Ca II H and K for a sample of Southern stars
• Ten Year Review of Queue Scheduling of the Hobby-Eberly Telescope
• Statistical Properties of Brown Dwarf Companions: Implications for Different Formation Mechanisms
• Systemic: A Testbed For Characterizing the Detection of Extrasolar Planets. I. The Systemic Console Package
• Retired A Stars and Their Companions: Eighteen New Jovian Planets
• Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars
• The GAPS programme with HARPS-N at TNG. I: Observations of the Rossiter-McLaughlin effect and characterisation of the transiting system Qatar-1
• HAT-P-13b,c: a transiting hot Jupiter with a massive outer companion on an eccentric orbit
• Long-term evolution of three-planet systems to the post-Main Sequence and beyond
• Confirmation of the Planet Hypothesis for the Long-period Radial Velocity Variations of Beta Geminorum
• H-alpha Activity of Old M Dwarfs: Stellar Cycles and Mean Activity Levels For 93 Low-Mass Stars in the Solar Neighborhood
• Long-term magnetic activity of a sample of M-dwarf stars from the HARPS program II. Activity and radial velocity
• A Planetary Mass Companion to the K0 Giant HD 17092
• 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
• New and updated stellar parameters for 71 evolved planet hosts. On the metallicity - giant planet connection
• Substellar-mass companions to the K-dwarf BD +14 4559 and the K-giants HD 240210 and BD +20 2457
• Precise Radial Velocities of Giant Stars II. Pollux and its Planetary Companion
• Period-luminosity relations in evolved red giants explained by solar-like oscillations
• The First HET Planet: A Companion to HD 37605
• Substellar-Mass Companions to the K-Giants HD 240237, BD +48 738 and HD 96127
• Planetary-mass companions to the K-giants BD+15 2940 and HD 233604
• A Planet in a 0.6-AU Orbit Around the K0 Giant HD 102272
• The Frequency of Rapid Rotation Among K Giant Stars
• Single Rotating Stars and the Formation of Bipolar Planetary Nebula
• A Double Planetary System around the Evolved Intermediate-Mass Star HD 4732
• Where is the second planet in the HD 160691 planetary system?
• BD+48 740 - Li overabundant giant star with a planet. A case of recent engulfment?
• White Dwarf - Red Dwarf Systems Resolved with the Hubble Space Telescope. II. Full Snapshot Survey Results
• On the extrasolar multi-planet system around HD160691
• Constraints on a second planet in the WASP-3 system
• Substellar Companions to Seven Evolved Intermediate-Mass Stars
• A tidally destructed massive planet as the progenitor of the two light planets around the sdB star KIC 05807616
• Connecting planets around horizontal branch stars with known exoplanets
• A simple scaling for the minimum instability time-scale of two widely spaced planets
• The Penn State - Torun Centre for Astronomy Planet Search stars. II. Lithium abundance analysis of the Red Giant Clump sample
• About putative Neptune-like extrasolar planetary candidates
• KOI-200b and KOI-889b: two transiting exoplanets detected and characterized with Kepler, SOPHIE and HARPS-N
• Effect of Metallicity on the Evolution of the Habitable Zone from the Pre-Main Sequence to the Asymptotic Giant Branch and the Search for Life
• The GAPS Programme with HARPS-N@TNG II: No giant planets around the metal-poor star HIP 11952
• Can Life develop in the expanded habitable zones around Red Giant Stars?
• On the link between rotation, chromospheric activity and Li abundance in subgiant stars
• Planets Around the K-Giants BD+20 274 and HD 219415
• The Penn State-Torun Centre for Astronomy Planet Search stars. I. Spectroscopic analysis of 348 red giants
• A likely exoplanet orbiting the oscillating K-giant α Arietis

Cited by in corpus (25)

• Retired A Stars Revisited: An Updated Giant Planet Occurrence Rate as a Function of Stellar Metallicity and Mass
• A comprehensive statistical assessment of star-planet interaction
• The orbital evolution of asteroids, pebbles and planets from giant branch stellar radiation and winds
• Precise radial velocities of giant stars XVI. Planet occurrence rates from the combined analysis of the Lick, EXPRESS, and PPPS giant star surveys
• Giant planets around two intermediate-mass evolved stars and confirmation of the planetary nature of HIP67851 c
• SWEET-Cat update and FASMA. A new minimization procedure for stellar parameters using high-quality spectra
• The Pan-Pacific Planet Search VII: The most eccentric planet orbiting a giant star
• TAPAS - Tracking Advanced Planetary Systems with HARPS-N. II. Super Li-rich giant HD 107028
• Beyond the Main Sequence: Testing the accuracy of stellar masses predicted by the PARSEC evolutionary tracks
• Dynamical constraints on the origin of hot and warm Jupiters with close friends
• The Penn State - Toruń Centre for Astronomy Planet Search stars IV. Dwarfs and the complete sample
• NIRPS joining HARPS at ESO 3.6 m. On-sky performance and science objectives
• Weighing in on the masses of retired A stars with asteroseismology: K2 observations of the exoplanet-host star HD 212771
• TAPAS IV. TYC 3667-1280-1 b - the most massive red giant star hosting a warm Jupiter
• Tracking Advanced Planetary Systems (TAPAS) with HARPS-N. VI. HD 238914 and TYC 3318-01333-1 - two more Li-rich giants with planets
• 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
• CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars
• Close-in planets around giant stars. Lack of hot-Jupiters and prevalence of multi-planetary systems
• Regular Radial Velocity Variations in Nine G- and K-type Giant Stars: Eight Planets and One Planet Candidate
• An apparently eccentric orbit of the exoplanet WASP-12 b as a radial velocity signature of planetary-induced tides in the host star
• Tracking Advanced Planetary Systems (TAPAS) with HARPS-N. III. HD 5583 and BD+15 2375 - two cool giants with warm companions
• Planets around evolved intermediate-mass stars III. Planet candidates and long-term activity signals in six open clusters
• Tracking Advanced Planetary Systems (TAPAS) with HARPS-N. V.: A Massive Jupiter orbiting the very low metallicity giant star BD+03 2562 and a possible planet around HD~103485
• Tracking Advanced Planetary Systems (TAPAS) with HARPS-N VII. Elder suns with low-mass companions
• Eighteen Exoplanet Host Stars from the NPOI Data Archive