English
Related papers

Related papers: Deep orbital search for additional planets in the …

200 papers

Radio wavelength astrometry of stars and other objects has a long and productive history. The use of that technique to determine whether stars have planets around them would cover a nearly unique part of the parameter space for detection of…

Earth and Planetary Astrophysics · Physics 2018-10-22 Bryan J. Butler , Brenda C. Matthews

We present the results of a deep imaging survey of stars surrounded by planets detected with the radial velocity technique. The purpose is to search for and to characterize long-period stellar and substellar companions. The sample contains…

Astrophysics · Physics 2009-11-11 G. Chauvin , A. -M. Lagrange , S. Udry , T. Fusco , F. Galland , D. Naef , J. -L. Beuzit , M. Mayor

We present the first results from our Keck program investigating the orbital architectures of planet-hosting multiple star systems. Kepler-444 is a metal-poor triple star system that hosts five sub-Earth-sized planets orbiting the primary…

The removal of noise typically correlated in time and wavelength is one of the main challenges for using the radial velocity method to detect Earth analogues. We analyze radial velocity data of tau Ceti and find robust evidence for…

Earth and Planetary Astrophysics · Physics 2017-09-13 Fabo Feng , Mikko Tuomi , Hugh R. A. Jones , John Barnes , Guillem Anglada-Escude , Steven S. Vogt , R. Paul Butler

We report on the serendipitous observations of Solar System objects imaged during the High cadence Transient Survey (HiTS) 2014 observation campaign. Data from this high cadence, wide field survey was originally analyzed for finding…

Aims. Our new program with HARPS aims to detect mean motion resonant planetary systems around stars which were previously reported to have a single bona fide planet, often based only on sparse radial velocity data. Methods. Archival and new…

Earth and Planetary Astrophysics · Physics 2017-06-14 T. Trifonov , M. Kürster , M. Zechmeister , O. V. Zakhozhay , S. Reffert , M. H. Lee , F. Rodler , S. S. Vogt , S. S. Brems

We report results of a search for planets around 500 main sequence stars using the Keck high resolution spectrometer which has provided Doppler precision of 3 m/s during the past 3 yr. We report 6 new strong planet candidates having…

Astrophysics · Physics 2009-10-31 Steven S. Vogt , Geoffrey W. Marcy , R. Paul Butler , Kevin Apps

We report the discovery of eight new giant planets, and updated orbits for four known planets, orbiting dwarf and subgiant stars using the CORALIE, HARPS, and MIKE instruments as part of the Calan-Hertfordshire Extrasolar Planet Search. The…

We present radial-velocity measurement of eight stars observed with the HARPS Echelle spectrograph mounted on the 3.6-m telescope in La Silla (ESO, Chile). Data span more than ten years and highlight the long-term stability of the…

We present an updated analysis of radial velocity data of the HD 82943 planetary system based on 10 years of measurements obtained with the Keck telescope. Previous studies have shown that the HD 82943 system has two planets that are likely…

Earth and Planetary Astrophysics · Physics 2015-06-16 Xianyu Tan , Matthew J. Payne , Man Hoi Lee , Eric B. Ford , Andrew W. Howard , John. A. Johnson , Geoff W. Marcy , Jason T. Wright

Using the EVEREST photometry pipeline, we have identified 74 candidate ultra-short-period planets (orbital period P<1 d) in the first half of the K2 data (Campaigns 0-8 and 10). Of these, 33 candidates have not previously been reported. A…

Based on the long-term radial-velocity surveys carried out with the McDonald Observatory 2.7m Harlan J. Smith Telescope from 1988 to the present, we derive upper limits to long-period giant planet companions for 31 nearby stars. Data from…

Dynamical interactions between planets and debris disks may sculpt the disk structure and impact planetary orbits, but only a few systems with both imaged planets and spatially resolved debris disks are known. With the Caltech Submm…

Earth and Planetary Astrophysics · Physics 2015-05-28 J. Patience , J. Bulger , R. R. King , B. Ayliffe , M. R. Bate , I. Song , C. Pinte , J. Koda , C. D. Dowell , A. Kovacs

(shortened for arXiv) We aim to progress towards more efficient exoplanet detection around active stars by optimizing the use of Doppler Imaging in radial velocity measurements. We propose a simple method to simultaneously extract a…

Context. The HR 8799 system, hosting four giant planets between a warm and cold debris disc, and an extended dusty tail beyond, serves as an ideal laboratory for studying planetary formation and evolution. The debris discs have been…

Earth and Planetary Astrophysics · Physics 2025-08-20 Pedro P. Poblete , Tim D. Pearce , Carolina Charalambous

HR8799 is a benchmark system for direct imaging studies. It hosts two debris belts, which lie internally and externally to four giant planets. This paper considers how the four known planets and a possible fifth planet, interact with the…

Earth and Planetary Astrophysics · Physics 2018-01-31 M. J. Read , M. C. Wyatt , S. Marino , G. M. Kennedy

HR 8799 is a four planet system that also hosts a debris disk. By numerically integrating both planets and a planetesimal disk, we find interactions between an exterior planetesimal disk and the planets can influence the lifetime of the…

Earth and Planetary Astrophysics · Physics 2015-06-12 Alexander J. Moore , Alice C. Quillen

We provide the first full K2 transiting exoplanet sample, using photometry from Campaigns 1-8 and 10-18, derived through an entirely automated procedure. This homogeneous planet candidate catalog is a crucial to perform a robust demographic…

We present a comprehensive analysis of 10 years of HARPS radial velocities of the K2V dwarf star HD 13808, which has previously been reported to host two unconfirmed planet candidates. We use the state-of-the-art nested sampling algorithm…

Earth and Planetary Astrophysics · Physics 2021-02-17 E. Ahrer , D. Queloz , V. M. Rajpaul , D. Ségransan , F. Bouchy , R. Hall , W. Handley , C. Lovis , M. Mayor , A. Mortier , F. Pepe , S. Thompson , S. Udry , N. Unger