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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 WASP-South search for transiting exoplanets
Coel Hellier, D. R. Anderson, A. Collier Cameron +9
Since 2006 WASP-South has been scanning the Southern sky for transiting exoplanets. Combined with Geneva Observatory radial velocities we have so far found over 30 transiting exopl…
WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system
B. Smalley, D. R. Anderson, A. Collier Cameron +19
We report the discovery of WASP-34b, a sub-Jupiter-mass exoplanet transiting its 10.4-magnitude solar-type host star (1SWASP J110135.89-235138.4; TYC 6636-540-1) every 4.3177 days…
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…
A possible dividing line between massive planets and brown-dwarf companions
Johannes Sahlmann, Damien Segransan, Didier Queloz +1
Brown dwarfs are intermediate objects between planets and stars. The lower end of the brown-dwarf mass range overlaps with the one of massive planets and therefore the distinction…
WASP-41b: A transiting hot Jupiter planet orbiting a magnetically-active G8V star
P. F. L. Maxted, D. R. Anderson, A. Collier Cameron +13
We report the discovery of a transiting planet with an orbital period of 3.05d orbiting the star TYC 7247-587-1. The star, WASP-41, is a moderately bright G8V star (V=11.6) with a…
The spin-orbit angles of the transiting exoplanets WASP-1b, WASP-24b, WASP-38b and HAT-P-8b from Rossiter-McLaughlin observations
E. K. Simpson, D. Pollacco, A. Collier Cameron +18
We present observations of the Rossiter-McLaughlin effect for the transiting exoplanet systems WASP-1, WASP-24, WASP-38 and HAT-P-8, and deduce the orientations of the planetary or…
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…
WASP-31b: a low-density planet transiting a metal-poor, late-F-type dwarf star
D. R. Anderson, A. Collier Cameron, C. Hellier +15
We report the discovery of the low-density, transiting giant planet WASP-31b. The planet is 0.48 Jupiter masses and 1.55 Jupiter radii. It is in a 3.4-day orbit around a metal-poor…
WASP-38b: A Transiting Exoplanet in an Eccentric, 6.87d Period Orbit
S. C. C. Barros, F. Faedi, A. Collier Cameron +31
We report the discovery of WASP-38b, a long period transiting planet in an eccentric 6.871815 day orbit. The transit epoch is 2455335.92050 +/- 0.00074 (HJD) and the transit durati…
The Doppler Shadow of WASP-3b: A tomographic analysis of Rossiter-McLaughlin observations
G. R. M. Miller, A. Collier Cameron, E. K. Simpson +9
Hot-Jupiter planets must form at large separations from their host stars where the temperatures are cool enough for their cores to condense. They then migrate inwards to their curr…
WASP-32b: A transiting hot Jupiter planet orbiting a lithium-poor, solar-type star
P. F. L Maxted, D. R. Anderson, A. Collier Cameron +13
We report the discovery of a transiting planet orbiting the star TYC 2-1155-1. The star, WASP-32, is a moderately bright (V=11.3) solar-type star (Teff=6100 +- 100K, [Fe/H] = -0.13…
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…
Transiting exoplanets from the CoRoT space mission. XV. CoRoT-15b: a brown dwarf transiting companion
F. Bouchy, M. Deleuil, T. Guillot +3
We report the discovery by the CoRoT space mission of a transiting brown dwarf orbiting a F7V star with an orbital period of 3.06 days. CoRoT-15b has a radius of 1.12 +0.30 -0.15 R…
WASP-37b: a 1.8 MJ exoplanet transiting a metal-poor star
E. K. Simpson, F. Faedi, S. C. C. Barros +39
We report on the discovery of WASP-37b, a transiting hot Jupiter orbiting a mv = 12.7 G2-type dwarf, with a period of 3.577471 \pm 0.00001 d, transit epoch T0 = 2455338.6188 \pm 0.…
Search for brown-dwarf companions of stars
Johannes Sahlmann, Damien Segransan, Didier Queloz +7
The discovery of 9 new brown-dwarf candidates orbiting stars in the CORALIE and HARPS radial-velocity surveys is reported. New CORALIE radial velocities yielding accurate orbits of…
WASP-25b: a 0.6 M_J planet in the Southern hemisphere
B. Enoch, A. Collier Cameron, D. R. Anderson +18
We report the detection of a 0.6 M_J extrasolar planet by WASP-South, WASP-25b, transiting its solar-type host star every 3.76 days. A simultaneous analysis of the WASP, FTS and Eu…
WASP-29b: A Saturn-sized transiting exoplanet
Coel Hellier, D. R. Anderson, A. Collier Cameron +14
We report the discovery of a Saturn-sized planet transiting a V = 11.3, K4 dwarf star every 3.9 d. WASP-29b has a mass of 0.24+/-0.02 M_Jup and a radius of 0.79+/-0.05 R_Jup, makin…
Transiting exoplanets from the CoRoT space mission XIV. CoRoT-11b: a transiting massive "hot-Jupiter" in a prograde orbit around a rapidly rotating F-type star
D. Gandolfi, G. Hébrard, R. Alonso +52
The CoRoT exoplanet science team announces the discovery of CoRoT-11b, a fairly massive hot-Jupiter transiting a V=12.9 mag F6 dwarf star (M*=1.27 +/- 0.05 Msun, R*=1.37 +/- 0.03 R…
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…
Spin-orbit angle measurements for six southern transiting planets; New insights into the dynamical origins of hot Jupiters
Amaury H. M. J. Triaud, Andrew Collier Cameron, Didier Queloz +14
For transiting planets, the Rossiter-McLaughlin effect allows the measurement of the sky-projected angle beta between the stellar rotation axis and a planet's orbital axis. Using t…
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…