806 citations · 26.4k across the 321 of their papers we have counts for
22 papers · 2 filters
The HARPS search for southern extra-solar planets: XXVI: Seven new planetary systems
C. Moutou, M. Mayor, G. Lo Curto +10
We are conducting a planet search survey with HARPS since seven years. The volume-limited stellar sample includes all F2 to M0 main-sequence stars within 57.5 pc, where extrasolar…
The HARPS search for southern extra-solar planets: XXVIII. Two giant planets around M0 dwarfs
Thierry Forveille, Xavier Bonfils, Gaspare Lo Curto +11
Fewer giants planets are found around M dwarfs than around more massive stars, and this dependence of planetary characteristics on the mass of the central star is an important obse…
Stellar noise and planet detection. II. Radial-velocity noise induced by magnetic cycles
X. Dumusque, C. Lovis, S. Udry +1
For the 451 stars of the HARPS high precision program, we study correlations between the radial-velocity (RV) variation and other parameters of the Cross Correlated Function (CCF).…
Stellar noise and planet detection. I. Oscillations, granulation and sun-like spots
X. Dumusque, N. C. Santos, S. Udry +2
Spectrographs like HARPS can now reach a sub-m/s precision in radial-velocity (RV) (Pepe & Lovis 2008). At this level of accuracy, we start to be confronted with stellar noise prod…
The HARPS search for southern extra-solar planets. XXVII. Up to seven planets orbiting HD 10180: probing the architecture of low-mass planetary systems
C. Lovis, D. Ségransan, M. Mayor +11
Context. Low-mass extrasolar planets are presently being discovered at an increased pace by radial velocity and transit surveys, opening a new window on planetary systems. Aims. We…
Astrometric search for a planet around VB 10
P. F. Lazorenko, J. Sahlmann, D. Segransan +9
We observed VB 10 in August and September 2009 using the FORS2 camera of the VLT with the aim of measuring its astrometric motion and of probing the presence of the announced plane…
The HARPS search for southern extrasolar planets XXV. Results from the metal-poor sample
N. C. Santos, M. Mayor, X. Bonfils +10
Searching for extrasolar planets around stars of different metallicity may provide strong constraints to the models of planet formation and evolution. In this paper we present the…
Planetary detection limits taking into account stellar noise. I. Observational strategies to reduce stellar oscillation and granulation effects
Xavier Dumusque, Stephane Udry, Christophe Lovis +2
The radial velocity signature of stellar noise is small, around the meter-per-second, but already too much for the detection of Earth mass planets in habitable zones. In this paper…
The HARPS search for southern extra-solar planets. XXIV. Companions to HD 85390, HD 90156 and HD 103197: A Neptune analogue and two intermediate mass planets
C. Mordasini, M. Mayor, S. Udry +11
We report the detection of three new extrasolar planets orbiting the solar type stars HD 85390, HD 90156 and HD 103197 with the HARPS spectrograph mounted on the ESO 3.6-m telescop…
The HARPS search for southern extrasolar planets. XXIII. 8 planetary companions to low-activity solar-type stars
Dominique Naef, Michel Mayor, Gaspare Lo Curto +17
In this paper, we present our HARPS radial-velocity data for eight low-activity solar-type stars belonging to the HARPS volume-limited sample: HD6718, HD8535, HD28254, HD290327, HD…
Transiting exoplanets from the CoRoT space mission. XI. CoRoT-8b: a hot and dense sub-Saturn around a K1 dwarf
P. Bordé, F. Bouchy, M. Deleuil +47
We report the discovery of CoRoT-8b, a dense small Saturn-class exoplanet that orbits a K1 dwarf in 6.2 days, and we derive its orbital parameters, mass, and radius. We analyzed tw…
Transiting exoplanets from the CoRoT space mission. XIII. CoRoT-13b: a dense hot Jupiter in transit around a star with solar metallicity and super-solar lithium content
J. Cabrera, H. Bruntt, M. Ollivier +45
We announce the discovery of the transiting planet CoRoT-13b. Ground based follow-up in CFHT and IAC80 confirmed CoRoT's observations. The mass of the planet was measured with the…
Transiting exoplanets from the CoRoT space mission. XII. CoRoT-12b: a short-period low-density planet transiting a solar analog star
M. Gillon, A. Hatzes, Sz. Csizmadia +50
We report the discovery by the CoRoT satellite of a new transiting giant planet in a 2.83 days orbit about a V=15.5 solar analog star (M_* = 1.08 +- 0.08 M_sun, R_* = 1.1 +- 0.1 R_…
The Earth as an extrasolar transiting planet: Earth's atmospheric composition and thickness revealed by Lunar eclipse observations
Alfred Vidal-Madjar, Luc Arnold, David Ehrenreich +24
An important goal within the quest for detecting an Earth-like extrasolar planet, will be to identify atmospheric gaseous bio-signatures. Observations of the light transmitted thro…
The SOPHIE search for northern extrasolar planets III. A Jupiter-mass companion around HD 109246
I. Boisse, A. Eggenberger, N. C. Santos +22
We report the detection of a Jupiter-mass planet discovered with the SOPHIE spectrograph mounted on the 1.93-m telescope at the Haute-Provence Observatory. The new planet orbits HD…
Observation of the full 12-hour-long transit of the exoplanet HD80606b. Warm-Spitzer photometry and SOPHIE spectroscopy
G. Hebrard, J. -M. Desert, R. F. Diaz +24
We present new observations of a transit of the 111-day-period exoplanet HD80606b. Using the Spitzer Space Telescope and its IRAC camera on the post-cryogenic mission, we performed…
Evidence against the young hot-Jupiter around BD +20 1790
P. Figueira, M. Marmier, X. Bonfils +11
Context. The young active star BD +20 1790 is believed to host a substellar companion, revealed by radial-velocity measurements that detected the reflex motion induced on the paren…
Evaluating the stability of atmospheric lines with HARPS
P. Figueira, F. Pepe, C. Lovis +1
Context: In the search for extrasolar systems by radial velocity technique, a precise wavelength calibration is necessary for high-precision measurements. The choice of the calibra…
The Spitzer search for the transits of HARPS low-mass planets - I. No transit for the super-Earth HD 40307b
M. Gillon, D. Deming, B. -O. Demory +9
We have used Spitzer and its IRAC camera to search for the transit of the super-Earth HD 40307b. The transiting nature of the planet could not be firmly discarded from our first ph…
The HARPS search for southern extrasolar planets XXI. Three new giant planets orbiting the metal-poor stars HD5388, HD181720, and HD190984
N. C. Santos, M. Mayor, W. Benz +11
We present the discovery of three new giant planets around three metal-deficient stars: HD5388b (1.96M_Jup), HD181720b (0.37M_Jup), and HD190984b (3.1M_Jup). All the planets have m…
Do stellar magnetic cycles influence the measurement of precise radial velocities?
N. C. Santos, J. Gomes da Silva, C. Lovis +1
The ever increasing level of precision achieved by present and future radial-velocity instruments is opening the way to discovering very low-mass, long-period planets (e.g. solar-s…
The SOPHIE search for northern extrasolar planets. II. A multi-planet system around HD9446
G. Hebrard, X. Bonfils, D. Segransan +19
We report the discovery of a planetary system around HD9446, performed from radial velocity measurements secured with the spectrograph SOPHIE at the 193-cm telescope of the Haute-P…