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Autoguider locked on a fiber input for precision stellar radial velocities

Astron. Astrophys. Suppl. Ser. Autoguider locked on a velocities? F. Bouchy P. Connes Service d'Aeronomie du CNRS Verrieres-le-Buisson Cedex France e-mail: Measurement of stellar radial velocities

Eyes on K2-3: A system of three likely sub-Neptunes characterized with HARPS-N and HARPS

Context. M-dwarf stars are promising targets for identifying and characterizing potentially habitable planets. K2-3 is a nearby (45 pc), early-type M dwarf hosting three small transiting planets, the outermost of which orbits close to the inner edge of the stellar (optimistic) habitable zone. The K2-3 system is well suited for follow-up characterization studies aimed at...

An extreme planetary system around HD 219828 - One long-period super Jupiter to a hot-Neptune host star

Context. With about 2000 extrasolar planets confirmed, the results show that planetary systems have a whole range of unexpected properties. This wide diversity provides fundamental clues to the processes of planet formation and evolution.Aims. We present a full investigation of the HD 219828 system, a bright metal-rich star for which a hot Neptune has previously been detected...

The SOPHIE search for northern extrasolar planets - XI. Three new companions and an orbit update: Giant planets in the habitable zone

We report the discovery of three new substellar companions to solar-type stars, HD 191806, HD 214823, and HD 221585, based on radial velocity measurements obtained at the Haute-Provence Observatory. Data from the SOPHIE spectrograph are combined with observations acquired with its predecessor, ELODIE, to detect and characterise the orbital parameters of three new gaseous giant...

SOPHIE velocimetry of Kepler transit candidates - XVII. The physical properties of giant exoplanets within 400 days of period

While giant extrasolar planets have been studied for more than two decades now, there are still some open questions as to their dominant formation and migration processes, as well as to their atmospheric evolution in different stellar environments. In this paper, we study a sample of giant transiting exoplanets detected by the Kepler telescope with orbital periods up to 400 days...

The SOPHIE search for northern extrasolar planets - VIII. Follow-up of ELODIE candidates: long-period brown-dwarf companions

of M? = 1:02 M and a companion minimum mass of 32.3 MJup. The instrumental o set between ELODIE and SOPHIE is adjusted to 165 24 m s 1, which is marginally F. Bouchy et al.: The SOPHIE search for

CoRoT 101186644: A transiting low-mass dense M-dwarf on an eccentric 20.7-day period orbit around a late F-star - Discovered in the CoRoT lightcurves

We present the study of the CoRoT transiting planet candidate 101186644, also named LRc01_E1_4780. Analysis of the CoRoT lightcurve and the HARPS spectroscopic follow-up observations of this faint (mV = 16) candidate revealed an eclipsing binary composed of a late F-type primary (Teff = 6090 ± 200 K) and a low-mass, dense late M-dwarf secondary on an eccentric (e = 0.4) orbit...

SOPHIE velocimetry of Kepler transit candidates - VI. An additional companion in the KOI-13 system

We report the discovery of a new stellar companion in the KOI-13 system. KOI-13 is composed of two fast-rotating A-type stars of similar magnitude. One of these two stars hosts a transiting planet discovered by Kepler. We obtained new radial velocity measurements using the SOPHIE spectrograph at the Observatoire de Haute-Provence that reveal an additional companion in this system...

SOPHIE velocimetry of Kepler transit candidates - VI. An additional companion in the KOI-13 system

We report the discovery of a new stellar companion in the KOI-13 system. KOI-13 is composed of two fast-rotating A-type stars of similar magnitude. One of these two stars hosts a transiting planet discovered by Kepler. We obtained new radial velocity measurements using the SOPHIE spectrograph at the Observatoire de Haute-Provence that reveal an additional companion in this system...

New seismological results on the G0 IV η Bootis

, 475 , 322 Buzzoni , A. , Chavez , M. , Malagnini , M. L. , & Morossi , C. 2001 , PASP, 113 , 1365 Carrier , F. , Bouchy , F. , & Eggenberger , P. 2003 , Recent Research Developments in Astronomy ... & Astrophysics, 1 , 219, Research Signpost , India Carrier , F. , & Bourban , G. 2003 , A &A, 406 , L23 Carrier , F. , Bouchy , F. , Kienzle , F. , et al. 2001 , A &A, 378 , 142 Cayrel de Strobel , G., Soubiran

The HARPS search for southern extra-solar planets - XXX. Planetary systems around stars with solar-like magnetic cycles and short-term activity variation

We present the discovery of four new long-period planets within the HARPS high-precision sample: HD 137388b (Msini = 0.22 MJ), HD 204941b (Msini = 0.27 MJ), HD 7199b (Msini = 0.29 MJ), HD 7449b (Msini = 1.04 MJ). A long-period companion, probably a second planet, is also found orbiting HD 7449. Planets around HD 137388, HD 204941, and HD 7199 have rather low eccentricities (less...

The HARPS search for southern extra-solar planets - XXXI. The M-dwarf sample

Context. Searching for planets around stars with different masses helps us to assess the outcome of planetary formation for different initial conditions. The low-mass M dwarfs are also the most frequent stars in our Galaxy and potentially therefore, the most frequent planet hosts.Aims. We present observations of 102 southern nearby M dwarfs, using a fraction of our guaranteed...

The HARPS search for southern extra-solar planets - XXXI. The M-dwarf sample

Context. Searching for planets around stars with different masses helps us to assess the outcome of planetary formation for different initial conditions. The low-mass M dwarfs are also the most frequent stars in our Galaxy and potentially therefore, the most frequent planet hosts.Aims. We present observations of 102 southern nearby M dwarfs, using a fraction of our guaranteed...

Extrasolar planets and brown dwarfs around A-F type stars - VIII. A giant planet orbiting the young star HD 113337

. Arnold , F. Bouchy , & C. Moutou, 319 Bouchy , F. , Hébrard , G. , Udry , S. , et al. 2009 , A &A, 505 , 853 Bouchy, F. , Díaz , R. F. , Hébrard , G. , et al. 2013 , A &A, 549 , A49 Chabrier , G. , Baraffe

Stellar characterization of CoRoT/Exoplanet fields with MATISSE

Aims. The homogeneous spectroscopic determination of the stellar parameters is a mandatory step for transit detections from space. Knowledge of which population the planet hosting stars belong to places constraints on the formation and evolution of exoplanetary systems.Methods. We used the FLAMES/GIRAFFE multi-fiber instrument at ESO to spectroscopically observe samples of stars...

SOPHIE velocimetry of Kepler transit candidates - XII. KOI-1257 b: a highly eccentric three-month period transiting exoplanet

A&A Astronomy & Astrophysics A. Santerne G. Hébrard M. Deleuil M. Havel A. C. M. Correia J.-M. Almenara R. Alonso L. Arnold S. C. C. Barros R. Behrend L. Bernasconi I. Boisse A. S. Bonomo F. Bouchy

The HARPS search for southern extra-solar planets - XII. A giant planet orbiting the metal-poor star HD 171028

, 527 Benz, W. , Mordasini , C. , Alibert , Y. , & Naef , D. 2006 , in Tenth Anniversary of 51 Peg-b: Status of and prospects for hot Jupiter studies , ed. L. Arnold , F. Bouchy , & C. Moutou, 24 Bonfils

The HARPS search for southern extra-solar planets - XII. A giant planet orbiting the metal-poor star HD 171028

, 527 Benz, W. , Mordasini , C. , Alibert , Y. , & Naef , D. 2006 , in Tenth Anniversary of 51 Peg-b: Status of and prospects for hot Jupiter studies , ed. L. Arnold , F. Bouchy , & C. Moutou, 24 Bonfils

WASP-104b and WASP-106b: two transiting hot Jupiters in 1.75-day and 9.3-day orbits

We have used the WASP survey to discover two exoplanetary systems, each consisting of a Jupiter-sized planet transiting an 11th-magnitude (V) main-sequence star. WASP-104b orbits its star in 1.75 d, whereas WASP-106b has the fourth-longest orbital period of any planet discovered by means of transits observed from the ground, orbiting every 9.29 d. Each planet is more massive than...

Transiting exoplanets from the CoRoT space mission - XXVI. CoRoT-24: a transiting multiplanet system

. Bordé F. Bouchy C. Cavarroc J. Cabrera S. Carpano Sz. Csizmadia W. D. Cochran H. J. Deeg R. F. Díaz R. Dvorak A. Erikson S. Ferraz-Mello M. Fridlund T. Fruth D. Gandolfi M. Gillon S. Grziwa T. Guillot G ... Exoplanets, St . Michel l'Observatoire, France, eds. F. Bouchy, R. Díaz , & C. Moutou, EPJ Web of Conf., 11 , id. 02001 Sato , K. H. , Garcia , R. A. , Pires , S. , et al. 2010 [arXiv: 1003 .5178] Sing , D. K