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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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151 papers · 1 filter
SOPHIE velocimetry of Kepler transit candidates II. KOI-428b: a hot Jupiter transiting a subgiant F-star
A. Santerne, R. F. Diaz, F. Bouchy +7
We report the discovery of a hot Jupiter transiting a subgiant star with an orbital period of 6.87 days thanks to public photometric data from the Kepler space mission and new radi…
The upper atmosphere of the exoplanet HD209458b revealed by the sodium D lines: Temperature-pressure profile, ionization layer, and thermosphere
A. Vidal-Madjar, D. K. Sing, A. Lecavelier des Etangs +6
A complete reassessment of the HST observations of the transits of the extrasolar planet HD209458b has provided a transmission spectrum of the atmosphere over a wide range of wavel…
Water in Star-Forming Regions with the Herschel Space Observatory (WISH): Overview of key program and first results
E. F. van Dishoeck, L. E. Kristensen, A. O. Benz +12
`Water In Star-forming regions with Herschel' (WISH) is a key program on the Herschel Space Observatory designed to probe the physical and chemical structure of young stellar objec…
Observational limits on the spin-down torque of Accretion Powered Stellar Winds
C. Zanni, J. Ferreira
The rotation period of classical T Tauri stars (CTTS) represents a longstanding puzzle. While young low-mass stars show a wide range of rotation periods, many CTTS are slow rotator…
Nonlinear energy transfers in accretion discs MRI turbulence. I-Net vertical field case
Geoffroy Lesur, Pierre-Yves Longaretti
The magnetorotational instability (MRI) is believed to be responsible for most of the angular momentum transport in accretion discs. However, molecular dissipation processes may dr…
Weeds: a CLASS extension for the analysis of millimeter and sub-millimeter spectral surveys
S. Maret, P. Hily-Blant, J. Pety +2
The advent of large instantaneous bandwidth receivers and high spectral resolution spectrometers on (sub-)millimeter telescopes has opened up the possibilities for unbiased spectra…
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…
Spitzer Mid-Infrared Photometry of 500 - 750 K Brown Dwarfs
S. K. Leggett, L. Albert, E. Artigau +11
Mid-infrared data, including Spitzer warm-IRAC [3.6] and [4.5] photometry, is critical for understanding the cold population of brown dwarfs now being found, objects which have mor…
GGD 37: An Extreme Protostellar Outflow
J. D. Green, D. M. Watson, E. Bergin +8
We present the first Spitzer-IRS spectral maps of the Herbig-Haro flow GGD 37 detected in lines of [Ne III], [O IV], [Ar III], and [Ne V]. The detection of extended [O IV] (55 eV)…
X-ray impact on the protoplanetary disks around T Tauri stars
G. Aresu, I. Kamp, R. Meijerink +3
Context: T Tauri stars have X-ray luminosities ranging from L_X = 10^28-10^32 erg/s. These luminosities are similar to UV luminosities (L_UV 10^30-10^31 erg/s) and therefore X-rays…
A new perspective on the irregular satellites of Saturn - I Dynamical and collisional history
D. Turrini, F. Marzari, H. Beust
The dynamical features of the irregular satellites of the giant planets argue against an in-situ formation and are strongly suggestive of a capture origin. Since the last detailed…
Triplicity and Physical Characteristics of Asteroid (216) Kleopatra
Pascal Descamps, F. Marchis, J. Berthier +16
To take full advantage of the September 2008 opposition passage of the M-type asteroid (216) Kleopatra, we have used near-infrared adaptive optics (AO) imaging with the W.M. Keck I…
Non-stationary dynamo & magnetospheric accretion processes of the classical T Tauri star V2129 Oph
JF Donati, J Bouvier, FM Walter +11
We report here the first results of a multi-wavelength campaign focussing on magnetospheric accretion processes of the classical TTauri star (cTTS) V2129Oph. In this paper, we pres…
The cold origin of the warm dust around epsilon Eridani
Martin Reidemeister, Alexander V. Krivov, Christopher C. Stark +3
Context: The K2V star eps Eri hosts one known inner planet, an outer Kuiper belt analog, and an inner disk of warm dust. Spitzer/IRS measurements indicate that the warm dust is pre…
Methane band and Spitzer mid-IR imaging of L and T dwarf candidates in the Pleiades
S. L. Casewell, R. F. Jameson, M. R. Burleigh +4
We present Spitzer observations at [3.6] and [4.5] microns together with the methane short (1.58\,\mic)-methane long (1.69\,\mic) colour for 3 cool dwarfs in the Pleiades, PLZJ23,…
On the volatile enrichments and heavy element content in HD 189733b
O. Mousis, J. I. Lunine, J. -M. Petit +13
Favored theories of giant planet formation center around two main paradigms, namely the core accretion model and the gravitational instability model. These two formation scenarios…
Dissecting the Moth: Discovery of an off-centered ring in the HD 61005 debris disk with high-resolution imaging
Esther Buenzli, Christian Thalmann, Arthur Vigan +17
The debris disk known as "The Moth" is named after its unusually asymmetric surface brightness distribution. It is located around the ~90 Myr old G8V star HD 61005 at 34.5 pc and h…
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…
The fundamental parameters of the roAp star Equulei
K. Perraut, I. Brandão, D. Mourard +18
Physical processes working in the stellar interiors as well as the evolution of stars depend on some fundamental stellar properties, such as mass, radius, luminosity, and chemical…
The influence of collimation on the appearance of relativistic jets
P. O. Petrucci, T. Boutelier, G. Henri
The question of the collimation of relativistic jets is the subject of a lively debate in the community. We numerically compute the apparent velocity and the Doppler factor of a no…
SOPHIE velocimetry of Kepler transit candidates. I. Detection of the low-mass white dwarf KOI-74b
David Ehrenreich, Anne-Marie Lagrange, François Bouchy +19
The Kepler mission has detected transits and occultations of a hot compact object around an early-type star, the Kepler Object of Interest KOI 74. The mass of this transiting objec…
Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622
H. E. S. S. Collaboration, F. Acero, F. Aharonian +167
Context: The detection of gamma-rays in the very-high-energy (VHE) range (100 GeV-100 TeV) offers the possibility of studying the parent population of ultrarelativistic particles f…
Reconciling observed GRB prompt spectra with synchrotron radiation ?
F. Daigne, Z. Bosnjak, Guillaume Dubus
(abridged)Prompt GRB emission is often interpreted as synchrotron radiation from high-energy electrons accelerated in internal shocks. Fast synchrotron cooling predicts that the ph…
X-shooter, NACO, and AMBER observations of the LBV Pistol Star \footnote{Based on ESO runs 85.D-0182A, 085.D-0625AC}
Christophe Martayan, Ronny Blomme, Jean-Baptiste Le Bouquin +15
We present multi-instruments and multi-wavelengths observations of the famous LBV star Pistol Star. These observations are part of a larger program about early O stars at different…