A homogeneous spectroscopic analysis of host stars of transiting planets (2009)
Eiff, M. Ammler-von, Santos, N. C., Sousa, S. G., Fernandes, J., Guillot, T., Israelian, G., ...
The analysis of transiting extra-solar planets provides an enormous amount of information about the formation and evolution of planetary systems. A precise knowledge of the host stars is necessary to...
Desort, M., Galland, F., Udry, S., Montagnier, G., Beust, H., ...
(abridged) In the frame of the search for extrasolar planets and brown dwarfs around early-type main-sequence stars, we present the results obtained on the early F-type star Theta Cygni. Elodie and...
Segransan, D., Udry, S., Mayor, M., Naef, D., Pepe, F., Queloz, D., ...
We report the detection of a double planetary system around HD 140718 as well as the discovery of two long period and massive planets orbiting HD 171238 and HD 204313. Those discoveries were made...
Mayor, M., Bonfils, X., Forveille, T., Delfosse, X., Udry, S., ...
The GJ 581 planetary system was already known to harbour three planets, including two super-Earths planets which straddle its habitable zone. We report here the detection of an additional planet --...
Pace, G., Melendez, J., Pasquini, L., Carraro, G., Danziger, J., Francois, P., ...
Chromospheric activity is widely used as an age indicator for solar-type stars based on the early evidence that there is a smooth evolution from young and active to old and inactive stars. We...
Almeida, P. Viana, Santos, N. C., Melo, C., Eiff, M. Ammler-von, Torres, C. A. O., Quast, G. R., ...
The recently discovered coeval, moving groups of young stellar objects in the solar neighborhood represent invaluable laboratories to study recent star formation and to search for high metallicity...
Darwin —- a mission to detect and search for life on extrasolar planets (2009)
Cockell, C. S., Léger, A., Fridlund, M., Herbst, T. M., Kaltenegger, L., Absil, O., ...
The discovery of extrasolar planets is one of the greatest achievements of modern astronomy. The detection of planets that vary widely in mass demonstrates that extrasolar planets of low mass exist....
Darwin-A Mission to Detect and Search for Life on Extrasolar Planets (2009)
Cockell, C S, Léger, A, Fridlund, M, Herbst, T M, Kaltenegger, L, Absil, Olivier, ...
The discovery of extrasolar planets is one of the greatest achievements of modern astronomy. The detection of planets that vary widely in mass demonstrates that extrasolar planets of low mass exist....
Neves, V., Santos, N. C., Sousa, S. G., Correia, A. C. M., Israelian, G.
We present a uniform study of the chemical abundances of 12 elements (Si, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Na, Mg, and Al) derived from the spectra of 451 stars observed as part of one of the HARPS GTO...
Stellar activity of planetary host star HD 189733 (2008)
Boisse, I., Moutou, C., Vidal-Madjar, A., Bouchy, F., Pont, F., Hébrard, G., ...
Extra-solar planet search programs require high-precision velocity measurements. They need to study how to disentangle radial-velocity variations due to Doppler motion from the noise induced by...
Lithium abundances in exoplanet-host stars : modelling (2008)
Castro, M., Vauclair, S., Richard, O., Santos, N. C.
Aims. Exoplanet-host stars (EHS) are known to present superficial chemical abundances different from those of stars without any detected planet (NEHS). EHS are, on the average, overmetallic compared...
Santos, N. C., Lovis, C., Pace, G., Melendez, J., Naef, D.
We present a study of accurate stellar parameters and iron abundances for 39 giants and 16 dwarfs in the 13 open clusters IC2714, IC4651, IC4756, NGC2360, NGC2423, NGC2447 (M93), NGC2539, NGC2682...
Moutou, C., Mayor, M., Curto, G. Lo, Udry, S., Bouchy, F., Benz, W., ...
We report the discovery of six new substellar companions of main-sequence stars, detected through multiple Doppler measurements with the instrument HARPS installed on the ESO 3.6m telescope, La...
TW ;Hydrae: evidence of stellar spots instead of a Hot Jupiter (2008)
Huélamo, N, Figueira, P, Bonfils, X, Santos, N C, Pepe, F, Gillon, Michaël, ...
Context: TW Hya is a classical T Tauri star that shows significant radial-velocity variations in the optical regime. These variations have been attributed to a 10 M_Jup planet orbiting the star at...
TW Hydrae: evidence of stellar spots instead of a Hot Jupiter (2008)
Huelamo, N., Figueira, P., Bonfils, X., Santos, N. C., Pepe, F., Guillon, M., ...
TW Hydrae shows significant radial-velocity variations in the optical regime. They have been attributed to a 10 Jupiter Mass planet orbiting the star at 0.04 AU. In this work, we have tested whether...
A transiting planet among 23 new near-threshold candidates from the OGLE survey - OGLE-TR-182 (2008)
Pont, F, Tamuz, O, Udalski, A, Mazeh, T, Bouchy, F, Melo, C, ...
By re-processing the data of the second season of the OGLE survey for planetary transits and adding new mesurements on the same fields gathered in subsequent years with the OGLE telescope, we have...
Misaligned spin-orbit in the XO-3 planetary system? (2008)
Hebrard, G., Bouchy, F., Pont, F., Loeillet, B., Rabus, M., Bonfils, X., ...
The transiting extrasolar planet XO-3b is remarkable, with a high mass and eccentric orbit. The unusual characteristics make it interesting to test whether its orbital plane is parallel to the...
Sousa, S. G., Santos, N. C., Mayor, M., Udry, S., Casagrande, L., Israelian, G., ...
To understand the formation and evolution of solar-type stars in the solar neighborhood, we need to measure their stellar parameters to high accuracy. We present a catalogue of accurate stellar...
Santos, N. C., Udry, S., Bouchy, F., Da Silva, R., Loeillet, B., Mayor, M., ...
We present the detection of a 0.47 Jupiter mass planet in a 44-day period eccentric trajectory (e=0.39) orbiting the metal-rich star HD45652. This planet, the seventh giant planet discovered in the...
Udalski, A, Pont, F, Naef, D, Melo, C, Bouchy, F, Santos, N C, ...
We present results of the photometric campaign for planetary and low-luminosity object transits conducted by the OGLE survey in the 2005 season (Campaign #5). About twenty of the most promising...
Lithium abundances in exoplanet-hosts stars (2008)
Castro, M., Vauclair, S., Richard, O., Santos, N. C.
Exoplanet-host stars (EHS) are known to present surface chemical abundances different from those of stars without any detected planet (NEHS). EHS are, on the average, overmetallic compared to the...
Analysis of 70 Ophiuchi AB including seismic constraints (2008)
Eggenberger, P., Miglio, A., Carrier, F., Fernandes, J., Santos, N. C.
The analysis of solar-like oscillations for stars belonging to a binary system provides a unique opportunity to probe the internal stellar structure and to test our knowledge of stellar physics. Such...
Santos, N. C., Melo, C., James, D. J., Gameiro, J. F., Bouvier, J., Gomes, J. I.
In this paper we present a study of chemical abundances in six star-forming regions. Stellar parameters and metallicities are derived using high-resolution, high S/N spectra of weak-line T-Tauri...
Udalski, A., Pont, F., Naef, D., Melo, C., Bouchy, F., Santos, N. C., ...
We present results of the photometric campaign for planetary and low-luminosity object transits conducted by the OGLE survey in 2005 season (Campaign #5). About twenty most promising candidates...
A Planetary Companion around the Young G6 Dwarf Gliese-Jahreiss 3021 (2007)
Naef Mayor Pepe, D. Naef, M. Mayor, F. Pepe, D. Queloz, N. C. Santos, ...
. We present here a new planetary companion detected with the CORALIE spectrograph mounted on the 1.2-m "Leonard Euler" Swiss Telescope at ESO-La Silla Observatory (Chile). It is the fifth...
HD196885, a close binary star with a 3.7-year planet (2007)
Correia, A. C. M., Udry, S., Mayor, M., Eggenberger, A., Naef, D., ...
We report the presence of a planet orbiting HD196885_A, with an orbital period of 1349 days. This star was previously suggested to host a 386-day planet, but we cannot confirm its existence. We also...
A transiting planet among 23 new near-threshold candidates from the OGLE survey - OGLE-TR-182 (2007)
Pont, F., Tamuz, O., Udalski, A., Mazeh, T., Bouchy, F., Melo, C., ...
By re-processing the data of the second season of the OGLE survey for planetary transits and adding new mesurements on the same fields gathered in subsequent years with the OGLE telescope, we have...
Tamuz, O., Ségransan, D., Udry, S., Mayor, M., Eggenberger, A., Naef, D., ...
We report the detection of two very eccentric planets orbiting HD4113 and HD156846 with the CORALIE Echelle spectrograph mounted on the 1.2-m Euler Swiss telescope at La Silla. The first planet,...
Bonfils, X, Mayor, M, Delfosse, X, Forveille, T, Gillon, Michaël, Perrier, C, ...
Context: How planet properties depend on stellar mass is a key diagnostic of planetary formation mechanisms. Aims: This motivates planet searches around stars that are significantly more massive or...
Da Silva, R., Udry, S., Bouchy, F., Moutou, C., Mayor, M., ...
We report here the discovery of two planet candidates as a result of our planet-search programme biased in favour of high-metallicity stars, using the ELODIE spectrograph at the Observatoire de Haute...
Refined parameters and spectroscopic transit of the super-massive planet HD147506b (2007)
Loeillet, B., Shporer, A., Bouchy, F., Pont, F., Mazeh, T., Beuzit, J. L., ...
In this paper, we report a refined determination of the orbital parameters and the detection of the Rossiter-McLaughlin effect of the recently discovered transiting exoplanet HD147506b (HAT-P-2b)....
Bonfils, X., Mayor, M., Delfosse, X., Forveille, T., Gillon, M., Perrier, C., ...
Context: How planet properties depend on stellar mass is a key diagnostic of planetary formation mechanisms. Aims: This motivates planet searches around stars which are significantly more massive or...
Pont, F, Moutou, C, Gillon, Michaël, Udalski, A, Bouchy, F, Fernandes, J M, ...
Transiting planets are essential to study the structure and evolution of extra-solar planets. For that purpose, it is important to measure precisely the radius of these planets. Here we report new...
Loeillet, B., Bouchy, F., Deleuil, M., Royer, F., Bouret, J. C., Moutou, C., ...
The discovery of the short-period giant exoplanet population, the so-called hot Jupiter population, and their link to brown dwarfs and low-mass stars challenges the conventional view of planet...
Sousa, S. G., Santos, N. C., Israelian, G., Mayor, M.
We present a new automatic code (ARES) for determining equivalent widths of the absorption lines present in stellar spectra. We also describe its use for determining fundamental spectroscopic stellar...
An extrasolar planetary system with three Neptune-mass planets (2007)
Lovis, C., Mayor, M., Pepe, F., Alibert, Y., Benz, W., Bouchy, F., ...
Over the past two years, the search for low-mass extrasolar planets has led to the detection of seven so-called 'hot Neptunes' or 'super-Earths' around Sun-like stars. These planets have masses 5-20...
A new Neptune-mass planet orbiting HD 219828 (2007)
Melo, C., Santos, N. C., Gieren, W., Pietrzynski, G., Ruiz, M. T., Sousa, S. G., ...
Two years ago a new benchmark for the planetary survey was set with the discoveries of three extrasolar planets with masses below 20$M_\oplus$. In particular, the serendipitous discovery of the...
Gillon, M., Pont, F., Moutou, C., Santos, N. C., Bouchy, F., Hartman, J. D., ...
OGLE-TR-132b transits a very metal-rich F dwarf about 2000 pc from the Sun, in the Galactic disc towards Carina. It orbits very close to its host star (a = 0.03 AU) and has an equilibrium temperature...
Gillon, M., Pont, F., Moutou, C., Santos, N. C., Bouchy, F., Hartman, J. D., ...
OGLE-TR-132b transits a very metal-rich F dwarf about 2000 pc from the Sun, in the Galactic disc towards Carina. It orbits very close to its host star (a = 0.03 AU) and has an equilibrium temperature...
The HARPS search for southern extra-solar planets. IX. mu Ara, a system with four planets (2007)
Pepe, F., Correia, A. C. M., Mayor, M., Tamuz, O., Benz, W., ...
The mu Ara planetary system is rather complex: It contains two already known planets, mu Ara b with P=640 days and mu Ara c with P=9.64 days, and a third companion on a wide but still poorly defined...
A new Neptune-mass planet orbiting HD219828 (2007)
Melo, C., Santos, N. C., Gieren, W., Pietrzynski, G., Ruiz, M. T., Sousa, S. G., ...
Publicación ISI
Pont, F., Moutou, C., Gillon, M., Udalski, A., Bouchy, F., Fernandes, J. M., ...
Publicación ISI
A new Neptune-mass planet orbiting HD219828 (2007)
Melo, C., Santos, N. C., Gieren, W., Pietrzynski, G., Ruiz, M. T., Sousa, S. G., ...
Publicación ISI
Pont, F., Moutou, C., Gillon, M., Udalski, A., Bouchy, F., Fernandes, J. M., ...
Publicación ISI
On the Age of Stars Harboring Transiting Planets (2006)
Melo, C., Santos, N. C., Pont, F., Guillot, T., Israelian, G., Mayor, M., ...
Results of photometric surveys have brought to light the existence of a population of giant planets orbiting their host stars even closer than the hot Jupiters (HJ), with orbital periods below 3...
Ecuvillon, A., Israelian, G., Pont, F., Santos, N. C., Mayor, M.
We present a detailed study on the kinematics of metal-rich stars with and without planets, and their relation with the Hyades, Sirius and Hercules dynamical streams in the solar neighbourhood....
The HARPS search for southern extra-solar planets. IX. mu Ara, a system with four planets (2006)
Pepe, F., Correia, A. C. M., Mayor, M., Tamuz, O., Benz, W., ...
The mu Ara planetary system is rather complex: It contains two already known planets, mu Ara b with P=640 days and mu Ara c with P=9.64 days, and a third companion on a wide but still poorly defined...
Santos, N. C., Ecuvillon, A., Israelian, G., Mayor, M., Melo, C., Queloz, D., ...
We used the UVES spectrograph (VLT-UT2 telescope) to obtain high-resolution spectra of 6 stars hosting transiting planets, namely for OGLE-TR-10, 56, 111, 113, 132 and TrES-1. The spectra are now...
Santos, N. C, Pont, F., Melo, C., Israelian, G., Bouchy, F., Mayor, M., ...
Context: During the past years photometric surveys, later complemented by follow-up radial-velocity measurements, have revealed the presence of several new extra-solar transiting planets, in very...
Santos, N. C., Bouchy, F., Mayor, M., Pepe, F., Queloz, D., Udry, S., ...
In this letter we present the discovery of a very light planetary companion to the star mu Ara (HD160691). The planet orbits its host once every 9.5days, and induces a sinusoidal radial velocity...
The HARPS search for southern extra-solar planets I. HD330075 b: a new 'hot Jupiter' (2006)
Pepe, F., Mayor, M., Queloz, D., Benz, W., Bonfils, X., Bouchy, F., ...
We report on the first extra-solar planet discovered with the brand new HARPS instrument. The planet is a typical 'hot Jupiter' with m2sini = 0.62 MJup and an orbital period of 3.39 days, but from...
Dall, T. H., Santos, N. C., Arentoft, T., Bedding, T. R., Kjeldsen, H.
Aims: We investigate whether bisectors derived from cross-correlation functions (CCF) of single-exposure spectra can be used to provide information on stellar atmospheres, and whether they can be...
Da Silva, R., Udry, S., Bouchy, F., Mayor, M., Moutou, C., Pont, F., ...
We report the discovery of a new planet candidate orbiting the subgiant star HD118203 with a period of P=6.1335 days. The best Keplerian solution yields an eccentricity e=0.31 and a minimum mass...
Lovis, C., Mayor, M., Bouchy, F., Pepe, F., Queloz, D., Santos, N. C., ...
We report on the detection of three Saturn-mass planets discovered with the HARPS instrument. HD 93083 shows radial-velocity (RV) variations best explained by the presence of a companion of 0.37...
Santos, N. C, Pont, F., Melo, C., Israelian, G., Bouchy, F., Mayor, M., ...
Context: During the past years photometric surveys, later complemented by follow-up radial-velocity measurements, have revealed the presence of several new extra-solar transiting planets, in very...
Santos, N. C, Pont, F., Melo, C., Israelian, G., Bouchy, F., Mayor, M., ...
Context: During the past years photometric surveys, later complemented by follow-up radial-velocity measurements, have revealed the presence of several new extra-solar transiting planets, in very...
Santos, N. C, Pont, F., Melo, C., Israelian, G., Bouchy, F., Mayor, M., ...
Context: During the past years photometric surveys, later complemented by follow-up radial-velocity measurements, have revealed the presence of several new extra-solar transiting planets, in very...
Abundances of refractory elements in the atmospheres of stars with extrasolar planets (2005)
Gilli, G., Israelian, G., Ecuvillon, A., Santos, N. C., Mayor, M.
This work presents a uniform and homogeneous study of chemical abundances of refractory elements in 101 stars with and 94 without known planetary companions. We carry out an in-depth investigation of...
Ecuvillon, A., Israelian, G., Santos, N. C., Mayor, M., Gilli, G.
We present the [X/H] trends as function of the elemental condensation temperature Tc in 88 planet host stars and in a volume-limited comparison sample of 33 dwarfs without detected planetary...
Pont, F., Melo, C. H. F., Bouchy, F., Udry, S., Queloz, D., Mayor, M., ...
We report the discovery and characterisation of OGLE-TR-122b, the smallest main-sequence star to date with a direct radius determination. OGLE-TR-122b transits around its solar-type primary every...
Doppler follow-up of OGLE planetary transit candidates in Carina (2005)
Pont, F., Bouchy, F., Melo, C., Santos, N. C., Mayor, M., Queloz, D., ...
We present the results of our high-resolution spectroscopic follow-up of 42 planetary transit candidates in Carina from the OGLE survey. This follow-up has already allowed the discovery of three new...
Doppler follow-up of OGLE transiting companions in the Galactic bulge (2005)
Melo, C., Pont, F., Santos, N. C., Mayor, M., Udry, S., Queloz, D., ...
Two years ago, the OGLE-III survey (Optical Gravitational Lensing Experiment) announced the detection of 54 short period multi-transiting objects in the Galactic bulge (Udalski et al., 2002a, 2002b)....
Eggenberger, A., Mayor, M., Naef, D., Pepe, F., Queloz, D., Santos, N. C., ...
We report precise Doppler measurements of HD 142022 obtained during the past six years with the CORALIE echelle spectrograph at La Silla Observatory together with a few additional observations made...
Two new \"very hot Jupiters\" among the OGLE transiting candidates (2005)
Bouchy, F., Pont, F., Santos, N. C., Melo, C., Mayor, M., Queloz, D., ...
As a result of a radial velocity follow-up of OGLE planetary transit candidates in Carina, we report the discovery of two new transiting planets with very short orbital periods: OGLE-TR-113 with...
Da Silva, R., Udry, S., Bouchy, F., Mayor, M., Moutou, C., Pont, F., ...
We report the discovery of a new planet candidate orbiting the subgiant star HD118203 with a period of P=6.1335 days. The best Keplerian solution yields an eccentricity e=0.31 and a minimum mass...
Abundance ratios of volatile vs. refractory elements: hints of pollutions? (2005)
Ecuvillon, A., Israelian, G., Santos, N. C., Mayor, M., Gilli, G.
We present the abundance ratios [X/H] of a large set of chemical species with condensation temperatures from 75 to 1600 K in an almost complete set of 105 planet-host stars and in a volume-limited...
Oxygen abundances in planet-harbouring stars. Comparison of different abundance indicators (2005)
Ecuvillon, A., Israelian, G., Santos, N. C., Shchukina, N. G., Mayor, M., Rebolo, R.
We present a detailed and uniform study of oxygen abundances in 155 solar type stars, 96 of which are planet hosts and 59 of which form part of a volume-limited comparison sample with no known...
Asteroseismology of the planet-hosting star mu Arae. II. Seismic analysis (2005)
Bazot, M., Vauclair, S., Bouchy, F., Santos, N. C.
As most exoplanets host stars, HD 160691 (alias mu Ara) presents a metallicity excess in its spectrum compared to stars without detected planets. This excess may be primordial, in which case the star...
Outbursts on normal stars. FH Leo misclassified as a novalike variable (2005)
Dall, T. H., Schmidtobreick, L., Santos, N. C., Israelian, G.
We present high resolution spectroscopy of the common proper motion system FH Leo (components HD 96273 and BD+07 2411B), which has been classified as a novalike variable due to an outburst observed...
Spectroscopic metallicities for planet-host stars: extending the samples (2005)
Santos, N. C., Israelian, G., Mayor, M., Bento, J. P., Almeida, P. C., Sousa, S. G., ...
We present stellar parameters and metallicities for 29 planet-host stars, as well as for a large volume-limited sample of 53 stars not known to be orbited by any planetary-mass companion. These stars...
Abundances of Na, Mg and Al in stars with giant planets (2005)
Beirao, P., Santos, N. C., Israelian, G., Mayor, M.
We present Na, Mg and Al abundances in a set of 98 stars with known giant planets, and in a comparison sample of 41 ``single'' stars. The results show that the [X/H] abundances (with X = Na, Mg and...
On the nature of Lithium-rich giant stars: constraints from Beryllium abundances (2005)
Melo, C. H. F., De Laverny, P., Santos, N. C., Israelian, G., Randich, S., Nascimento Jr., J. D. Do, ...
We have derived beryllium abundances for 7 Li-rich giant (A(Li) > 1.5) stars and 10 other Li-normal giants, with the aim of investigating the origin of the Lithium in the Li-rich giants. In...
Asteroseismology of the planet-hosting star $\mu$ Arae. I. The acoustic spectrum (2005)
Bouchy, Francois, Bazot, Michael, Santos, N.C., Vauclair, Sylvie, Sosnowska, Danuta
We present HARPS spectroscopy of mu Arae (HD160691) performed for studying the origin of the metallicity excess in this planet-hosting stars. The asteroseismologic campaign led to the previously...
Asteroseismology of the planet-hosting star $\mu$ Arae. I. The acoustic spectrum (2005)
Bouchy, Francois, Bazot, Michael, Santos, N.C., Vauclair, Sylvie, Sosnowska, Danuta
We present HARPS spectroscopy of mu Arae (HD160691) performed for studying the origin of the metallicity excess in this planet-hosting stars. The asteroseismologic campaign led to the previously...
Asteroseismology of the planet-hosting star $\mu$ Arae. I. The acoustic spectrum (2005)
Bouchy, Francois, Bazot, Michael, Santos, N. C., Vauclair, Sylvie, Sosnowska, Danuta
We present HARPS spectroscopy of mu Arae (HD160691) performed for studying the origin of the metallicity excess in this planet-hosting stars. The asteroseismologic campaign led to the previously...
Asteroseismology of the planet-hosting star mu Arae. II. Seismic analysis (2005)
Bazot, M., Vauclair, S., Bouchy, F., Santos, N. C.
As most exoplanets host stars, HD 160691 (alias mu Ara) presents a metallicity excess in its spectrum compared to stars without detected planets. This excess may be primordial, in which case the star...
Lovis, C., Mayor, M., Bouchy, F., Pepe, F., Queloz, D., Santos, N. C., ...
We report on the detection of three Saturn-mass planets discovered with the HARPS instrument. HD 93083 shows radial-velocity (RV) variations best explained by the presence of a companion of 0.37...
Bonfils, X., Delfosse, X., Udry, S., Santos, N. C., Forveille, T., Ségransan, D.
We obtained high resolution ELODIE and CORALIE spectra for both components of 20 wide visual binaries composed of an F-, G- or K-dwarf primary and an M-dwarf secondary. We analyse the well understood...
Pont, F., Melo, C. H. F., Bouchy, F., Udry, S., Queloz, D., Mayor, M., ...
We report the discovery and characterisation of OGLE-TR-122b, the smallest main-sequence star to date with a direct radius determination. OGLE-TR-122b transits around its solar-type primary every...
Doppler follow-up of OGLE planetary transit candidates in Carina (2005)
Pont, F., Bouchy, F., Melo, C., Santos, N. C., Mayor, M., Queloz, D., ...
We present the results of our high-resolution spectroscopic follow-up of 42 planetary transit candidates in Carina from the OGLE survey. This follow-up has already allowed the discovery of three new...
Da Silva, R., Udry, S., Bouchy, F., Mayor, M., Moutou, C., Pont, F., ...
We report the discovery of a new planet candidate orbiting the subgiant star HD118203 with a period of P=6.1335 days. The best Keplerian solution yields an eccentricity e=0.31 and a minimum mass...
Lovis, C., Mayor, M., Bouchy, F., Pepe, F., Queloz, D., Santos, N. C., ...
We report on the detection of three Saturn-mass planets discovered with the HARPS instrument. HD 93083 shows radial-velocity (RV) variations best explained by the presence of a companion of 0.37...
Characterization of OGLE transiting exoplanets (2005)
Bouchy, F., Pont, F., Moutou, C., Queloz, D., Santos, N. C., Melo, C., ...
Until 2003, only one transiting exoplanet was known, the famous HD209458b, first detected by radial velocity surveys. Then in quick succession, seven transiting planets were discovered among the...
Pont, F., Melo, C. H. F., Bouchy, F., Udry, S., Queloz, D., Mayor, M., ...
We report the discovery and characterisation of OGLE-TR-122b, the smallest main-sequence star to date with a direct radius determination. OGLE-TR-122b transits around its solar-type primary every...
Doppler follow-up of OGLE planetary transit candidates in Carina (2005)
Pont, F., Bouchy, F., Melo, C., Santos, N. C., Mayor, M., Queloz, D., ...
We present the results of our high-resolution spectroscopic follow-up of 42 planetary transit candidates in Carina from the OGLE survey. This follow-up has already allowed the discovery of three new...
Asteroseismology of the planet-hosting star mu Arae. II. Seismic analysis (2005)
Bazot, M., Vauclair, S., Bouchy, F., Santos, N. C.
As most exoplanets host stars, HD 160691 (alias mu Ara) presents a metallicity excess in its spectrum compared to stars without detected planets. This excess may be primordial, in which case the star...
Da Silva, R., Udry, S., Bouchy, F., Mayor, M., Moutou, C., Pont, F., ...
We report the discovery of a new planet candidate orbiting the subgiant star HD118203 with a period of P=6.1335 days. The best Keplerian solution yields an eccentricity e=0.31 and a minimum mass...
Lovis, C., Mayor, M., Bouchy, F., Pepe, F., Queloz, D., Santos, N. C., ...
We report on the detection of three Saturn-mass planets discovered with the HARPS instrument. HD 93083 shows radial-velocity (RV) variations best explained by the presence of a companion of 0.37...
Pont, F., Melo, C. H. F., Bouchy, F., Udry, S., Queloz, D., Mayor, M., ...
We report the discovery and characterisation of OGLE-TR-122b, the smallest main-sequence star to date with a direct radius determination. OGLE-TR-122b transits around its solar-type primary every...
Doppler follow-up of OGLE planetary transit candidates in Carina (2005)
Pont, F., Bouchy, F., Melo, C., Santos, N. C., Mayor, M., Queloz, D., ...
We present the results of our high-resolution spectroscopic follow-up of 42 planetary transit candidates in Carina from the OGLE survey. This follow-up has already allowed the discovery of three new...
Asteroseismology of the planet-hosting star mu Arae. II. Seismic analysis (2005)
Bazot, M., Vauclair, S., Bouchy, F., Santos, N. C.
As most exoplanets host stars, HD 160691 (alias mu Ara) presents a metallicity excess in its spectrum compared to stars without detected planets. This excess may be primordial, in which case the star...
Asteroseismology of the planet-hosting star $\mu$ Arae. I. The acoustic spectrum (2005)
Bouchy, Francois, Bazot, Michael, Santos, N.C., Vauclair, Sylvie, Sosnowska, Danuta
We present HARPS spectroscopy of mu Arae (HD160691) performed for studying the origin of the metallicity excess in this planet-hosting stars. The asteroseismologic campaign led to the previously...
Asteroseismology of the planet-hosting star $\mu$ Arae. I. The acoustic spectrum (2005)
Bouchy, Francois, Bazot, Michael, Santos, N.C., Vauclair, Sylvie, Sosnowska, Danuta
We present HARPS spectroscopy of mu Arae (HD160691) performed for studying the origin of the metallicity excess in this planet-hosting stars. The asteroseismologic campaign led to the previously...
A pair of planets around HD 202206 or a circumbinary planet? (2004)
Correia, A. C. M., Udry, S., Mayor, M., Laskar, J., Naef, D., Pepe, F., ...
Long-term precise Doppler measurements with the CORALIE spectrograph reveal the presence of a second planet orbiting the solar-type star HD202206. The radial-velocity combined fit yields companion...
Doppler follow-up of OGLE transiting companions in the Galactic bulge (2004)
Bouchy, Francois, Pont, F., Melo, C., Santos, N.C., Mayor, M., Queloz, D., ...
Two years ago, the OGLE-III survey (Optical Gravitational Lensing Experiment) announced the detection of 54 short period multi-transiting objects in the Galactic bulge (Udalski et al., 2002a, 2002b)....
Doppler follow-up of OGLE transiting companions in the Galactic bulge (2004)
Bouchy, Francois, Pont, F., Melo, C., Santos, N.C., Mayor, M., Queloz, D., ...
Two years ago, the OGLE-III survey (Optical Gravitational Lensing Experiment) announced the detection of 54 short period multi-transiting objects in the Galactic bulge (Udalski et al., 2002a, 2002b)....
Doppler follow-up of OGLE transiting companions in the Galactic bulge (2004)
Bouchy, Francois, Pont, F., Melo, C., Santos, N. C., Mayor, M., Queloz, D., ...
Two years ago, the OGLE-III survey (Optical Gravitational Lensing Experiment) announced the detection of 54 short period multi-transiting objects in the Galactic bulge (Udalski et al., 2002a, 2002b)....
Santos, N. C., Bouchy, F., Mayor, M., Pepe, F., Queloz, D., Udry, S., ...
In this letter we present the discovery of a very light planetary companion to the star mu Ara (HD160691). The planet orbits its host once every 9.5days, and induces a sinusoidal radial velocity...
Are beryllium abundances anomalous in stars with giant planets? (2004)
Santos, N. C., Israelian, G., Lopez, R. J Garcia, Mayor, M., Rebolo, R., Randich, S., ...
In this paper we present beryllium (Be) abundances in a large sample of 41 extra-solar planet host stars, and for 29 stars without any known planetary-mass companion, spanning a large range of...
Beryllium anomalies in solar-type field stars (2004)
Santos, N. C., Israelian, G., Randich, S., Lopez, R. J. Garcia, Rebolo, R.
We present a study of beryllium (Be) abundances in a large sample of field solar-type dwarfs and sub-giants spanning a large range of effective temperatures. The analysis shows that Be is severely...
C, S, Zn and Cu abundances in planet-harbouring stars (2004)
Ecuvillon, A., Israelian, G., Santos, N. C., Mayor, M., Villar, V., Bihain, G.
We present a detailed and uniform study of C, S, Zn and Cu abundances in a large set of planet host stars, as well as in a homogeneous comparison sample of solar-type dwarfs with no known...
The HARPS search for southern extra-solar planets I. HD330075 b: a new 'hot Jupiter' (2004)
Pepe, F., Mayor, M., Queloz, D., Benz, W., Bonfils, X., Bouchy, F., ...
We report on the first extra-solar planet discovered with the brand new HARPS instrument. The planet is a typical 'hot Jupiter' with m2sini = 0.62 MJup and an orbital period of 3.39 days, but from...
Risk of hepatitis B virus transmission by diagnostic hysteroscopy (2004)
Santos,N.C., Pinho,J.R.R., Lemos,M.F., Moreira,R.C., Lopes,C.M.C., Sacilotto,M.T.J., ...
Few data are available in the literature concerning the efficacy of standard hysteroscope disinfection procedures to prevent hepatitis B transmission. The aim of the present study was to determine...
Two new "very hot Jupiters" among the OGLE transiting candidates (2004)
Bouchy, F., Pont, F., Santos, N. C., Melo, C., Mayor, M., Queloz, D., ...
As a result of a radial velocity follow-up of OGLE planetary transit candidates in Carina, we report the discovery of two new transiting planets with very short orbital periods: OGLE-TR-113 with...
Nitrogen abundances in Planet-harbouring stars (2004)
Ecuvillon, A., Israelian, G., Santos, N. C., Mayor, M., López, R. J. García, Randich, S.
We present a detailed spectroscopic analysis of nitrogen abundances in 91 solar-type stars, 66 with and 25 without known planetary mass companions. All comparison sample stars and 28 planet hosts...
Doppler follow-up of OGLE transiting companions in the Galactic bulge (2004)
Melo, C., Pont, F., Santos, N. C., Mayor, M., Udry, S., Queloz, D., ...
Two years ago, the OGLE-III survey (Optical Gravitational Lensing Experiment) announced the detection of 54 short period multi-transiting objects in the Galactic bulge (Udalski et al., 2002a, 2002b)....
Two new \"very hot Jupiters\" among the OGLE transiting candidates (2004)
Bouchy, F., Pont, F., Santos, N. C., Melo, C., Mayor, M., Queloz, D., ...
As a result of a radial velocity follow-up of OGLE planetary transit candidates in Carina, we report the discovery of two new transiting planets with very short orbital periods: OGLE-TR-113 with...
Santos, N. C., Bouchy, F., Mayor, M., Pepe, F., Queloz, D., Udry, S., ...
In this letter we present the discovery of a very light planetary companion to the star mu Ara (HD160691). The planet orbits its host once every 9.5days, and induces a sinusoidal radial velocity...
The HARPS search for southern extra-solar planets I. HD330075 b: a new 'hot Jupiter' (2004)
Pepe, F., Mayor, M., Queloz, D., Benz, W., Bonfils, X., Bouchy, F., ...
We report on the first extra-solar planet discovered with the brand new HARPS instrument. The planet is a typical 'hot Jupiter' with m2sini = 0.62 MJup and an orbital period of 3.39 days, but from...
Santos, N. C., Bouchy, F., Mayor, M., Pepe, F., Queloz, D., Udry, S., ...
In this letter we present the discovery of a very light planetary companion to the star mu Ara (HD160691). The planet orbits its host once every 9.5days, and induces a sinusoidal radial velocity...
The HARPS search for southern extra-solar planets I. HD330075 b: a new 'hot Jupiter' (2004)
Pepe, F., Mayor, M., Queloz, D., Benz, W., Bonfils, X., Bouchy, F., ...
We report on the first extra-solar planet discovered with the brand new HARPS instrument. The planet is a typical 'hot Jupiter' with m2sini = 0.62 MJup and an orbital period of 3.39 days, but from...
Doppler follow-up of OGLE transiting companions in the Galactic bulge (2004)
Melo, C., Pont, F., Santos, N. C., Mayor, M., Udry, S., Queloz, D., ...
Two years ago, the OGLE-III survey (Optical Gravitational Lensing Experiment) announced the detection of 54 short period multi-transiting objects in the Galactic bulge (Udalski et al., 2002a, 2002b)....
Two new \"very hot Jupiters\" among the OGLE transiting candidates (2004)
Bouchy, F., Pont, F., Santos, N. C., Melo, C., Mayor, M., Queloz, D., ...
As a result of a radial velocity follow-up of OGLE planetary transit candidates in Carina, we report the discovery of two new transiting planets with very short orbital periods: OGLE-TR-113 with...
Doppler follow-up of OGLE transiting companions in the Galactic bulge (2004)
Bouchy, Francois, Pont, F., Melo, C., Santos, N.C., Mayor, M., Queloz, D., ...
Two years ago, the OGLE-III survey (Optical Gravitational Lensing Experiment) announced the detection of 54 short period multi-transiting objects in the Galactic bulge (Udalski et al., 2002a, 2002b)....
Doppler follow-up of OGLE transiting companions in the Galactic bulge (2004)
Bouchy, Francois, Pont, F., Melo, C., Santos, N.C., Mayor, M., Queloz, D., ...
Two years ago, the OGLE-III survey (Optical Gravitational Lensing Experiment) announced the detection of 54 short period multi-transiting objects in the Galactic bulge (Udalski et al., 2002a, 2002b)....
Santos, N. C., Israelian, G., Mayor, M.
We present stellar parameters and metallicities, obtained from a detailed spectroscopic analysis, for a large sample of 98 stars known to be orbited by planetary mass companions (almost all known...
Mayor, M., Udry, S., Naef, D., Pepe, F., Queloz, D., Santos, N. C., ...
This paper summarizes the information gathered for 16 still unpublished exoplanet candidates discovered with the CORALIE echelle spectrograph mounted on the Euler Swiss telescope at La Silla...
Udry, S., Mayor, M., Santos, N. C.
Interesting emerging observational properties of the period-mass distribution of extra-solar planets are discussed. New recent detections confirm the already emphasized lack of massive planets...
Santos, N. C., Udry, S., Mayor, M., Naef, D., Pepe, F., Queloz, D., ...
The presence of a planet around the K dwarf HD192263 was recently called into question by the detection of a periodic photometric signal with the same period as the one observed in radial velocity....
Chemical abundances of planet-host stars: Results for alpha and Fe-group elements (2003)
Bodaghee, A., Santos, N. C., Israelian, G., Mayor, M.
In this paper, we present a study of the abundances of Si, Ca, Sc, Ti, V, Cr, Mn, Co, and Ni in a large set of stars known to harbor giant planets, as well as in a comparison sample of stars not...
The CORALIE survey for southern extra-solar planets. X. A Hot Jupiter orbiting HD73256 (2003)
Udry, S., Mayor, M., Clausen, J. V., Freyhammer, L. M., Helt, B. E., Lovis, C., ...
Recent radial-velocity measurements obtained with the CORALIE spectrograph on the 1.2-m Euler Swiss telescope at La Silla unveil the presence of a new Jovian-mass Hot Jupiter around HD 73256. The...
Multi-order TODCOR: application to observations taken with the CORALIE echelle spectrograph (2003)
Zucker, S., Mazeh, T., Santos, N. C., Udry, S., Mayor, M.
This paper presents an application of the TwO-Dimensional CORrelation (TODCOR) algorithm to multi-order spectra. The combination of many orders enables the detection and measurement of the radial...
Santos, N. C., Israelian, G., Mayor, M., Rebolo, R., Udry, S.
In this article we present a detailed spectroscopic analysis of more than 50 extra-solar planet host stars. Stellar atmospheric parameters and metallicities are derived using high resolution and high...
Santos, N. C., Mayor, M., Naef, D., Pepe, F., Queloz, D., Udry, S., ...
In this article we present the case of HD 41004 AB, a system composed of a K0V star and a 3.7-magnitude fainter M-dwarf companion separated by only 0.5 arcsec. An analysis of CORALIE radial-velocity...
Beryllium abundances in stars hosting giant planets (2002)
Santos, N. C., Lopez, R. J. Garcia, Israelian, G., Mayor, M., Rebolo, R., Garcia-Gil, A., ...
We have derived beryllium abundances in a wide sample of stars hosting planets, with spectral types in the range F7V-K0V, aimed at studying in detail the effects of the presence of planets on the...
Pepe, F., Mayor, M., Galland, F., Naef, D., Queloz, D., Santos, N. C., ...
We present the discovery of two Saturn-mass companions to HD108147 and HD168746. Both belong to the lightest ever discovered planets. The minimum mass of the companion to HD168746 is of only 0.77 the...
Udry, S., Mayor, M., Naef, D., Pepe, F., Queloz, D., Santos, N. C., ...
Doppler CORALIE measurements of the solar-type stars HD141937, HD162020, HD168443 and HD202206 show Keplerian radial-velocity variations revealing the presence of 4 new companions with minimum masses...
Quintessence with Coupled Scalar Fields (2001)
Bento, M. C., Bertolami, O., Santos, N. C.
We discuss the dynamics of a quintessence model involving two coupled scalar fields. The model presents two types of solutions, namely solutions that correspond to eternal and transient acceleration...
A Two-Field Quintessence Model (2001)
Bento, M. C., Bertolami, O., Santos, N. C.
We study the dynamics of a quintessence model based on two interacting scalar fields. The model can account for the (recent) accelerated expansion of the Universe suggested by astronomical...
The CORALIE survey for southern extrasolar planets V: 3 new extrasolar planets (2001)
Naef, D., Mayor, M., Pepe, F., Queloz, D., Santos, N. C., Udry, S., ...
We report the detection of 3 new planetary companions orbiting the solar-type stars GJ 3021, HD 52265 and HD 169830 using radial-velocity measurements taken with the CORALIE echelle spectrograph. All...
The metal-rich nature of stars with planets (2001)
Santos, N. C., Israelian, G., Mayor, M.
With the goal of confirming the metallicity "excess" present in stars with planetary-mass companions, we present in this paper a high-precision spectroscopic study of a sample of dwarfs included in...
Bisector analysis as a diagnostic of intrinsic radial-velocity variations (2001)
Santos, N. C., Mayor, M., Naef, D., Queloz, D., Udry, S.
In this contribution we present the results of the application of the bisector of the cross-correlation function as a diagnostic of activity-related radial-velocity variations. The results show that...
Chemical analysis of 8 recently discovered extra-solar planet host stars (2000)
Santos, N. C., Israelian, G., Mayor, M.
We present the chemical analysis of a new set of stars known to harbor low mass companions, namely HD 1237, HD 52265, HD 82943, HD 83443, HD 169830, and HD 202206. In addition, we have also analyzed...
The Spectroscopic Orbit of the Planetary Companion Transiting HD209458 (2000)
Mazeh, T., Naef, D., Torres, G., Latham, D. W., Mayor, M., ...
We report a spectroscopic orbit with period P = 3.52433 +/- 0.00027 days for the planetary companion that transits the solar-type star HD209458. For the metallicity, mass, and radius of the star we...
Udry Mayor Naef, S. Udry, M. Mayor, D. Naef, F. Pepe, D. Queloz, ...
. Doppler measurements from the highresolution CORALIE spectrometer of the stars HD 75289 and HD 130322 reveal 2 new extra-solar giant planets. They are the second and third planetary candidates...
Santos Mayor Naef, N. C. Santos, M. Mayor, D. Naef, F. Pepe, D. Queloz, ...
. A new extra-solar planet has been discovered in the context of the CORALIE survey at La Silla Observatory. This new planetary candidate orbits the star HD 192263 in an almost circular orbit at a...
Teaching light scattering spectroscopy: the dimension and shape of tobacco mosaic virus.
The tobacco mosaic virus is used as a model molecular assembly to illustrate the basic potentialities of light scattering techniques (both static and dynamic) to undergraduates. The work has two...
Filipin-induced lesions in planar phospholipid bilayers imaged by atomic force microscopy.
Santos, N C, Ter-Ovanesyan, E, Zasadzinski, J A, Prieto, M, Castanho, M A
Filipin is a macrolide polyene with antifungal activity belonging to the same family of antibiotics as amphotericin B and nystatin. Despite the spectroscopy and electron microscopy studies of its...
Reconstitution of phospholipid bilayer by an atomic force microscope tip.
Santos, N C, Ter-Ovanesyan, E, Zasadzinski, J A, Castanho, M A
Teaching light scattering spectroscopy: the dimension and shape of tobacco mosaic virus.
The tobacco mosaic virus is used as a model molecular assembly to illustrate the basic potentialities of light scattering techniques (both static and dynamic) to undergraduates. The work has two...
Filipin-induced lesions in planar phospholipid bilayers imaged by atomic force microscopy.
Santos, N C, Ter-Ovanesyan, E, Zasadzinski, J A, Prieto, M, Castanho, M A
Filipin is a macrolide polyene with antifungal activity belonging to the same family of antibiotics as amphotericin B and nystatin. Despite the spectroscopy and electron microscopy studies of its...