666 citations · 3.1k across the 36 of their papers we have counts for
24 papers · 1 filter
The equilibrium shape of (65) Cybele: primordial or relic of a large impact?
M. Marsset, M. Brož, J. Vermersch +24
Cybele asteroids constitute an appealing reservoir of primitive material genetically linked to the outer Solar System, and the physical properties of the largest members can be rea…
(216) Kleopatra, a low density critically rotating M-type asteroid
F. Marchis, L. Jorda, P. Vernazza +36
Context. The recent estimates of the 3D shape of the M/Xe-type triple asteroid system (216) Kleopatra indicated a density of 5 g.cm. Such a high density implies a high metal…
An advanced multipole model for (216) Kleopatra triple system
M. Brož, F. Marchis, L. Jorda +37
To interpret adaptive-optics observations of (216) Kleopatra, we need to describe an evolution of multiple moons, orbiting an extremely irregular body and including their mutual in…
Evidence for differentiation of the most primitive small bodies
B. Carry, P. Vernazza, F. Vachier +40
Dynamical models of Solar System evolution have suggested that P-/D-type volatile-rich asteroids formed in the outer Solar System and may be genetically related to the Jupiter Troj…
Binary asteroid (31) Euphrosyne: Ice-rich and nearly spherical
B. Yang, J. Hanus, B. Carry +38
Asteroid (31) Euphrosyne is one of the biggest objects in the asteroid main belt and the Euphrosyne family occupies a highly inclined region in the outer main belt and contains a r…
(704) Interamnia: A transitional object between a dwarf planet and a typical irregular-shaped minor body
J. Hanuš, P. Vernazza, M. Viikinkoski +56
With an estimated diameter in the 320 to 350 km range, (704) Interamnia is the fifth largest main belt asteroid and one of the few bodies that fills the gap in size between the fou…
Physical, spectral, and dynamical properties of asteroid (107) Camilla and its satellites
M. Pajuelo, B. Carry, F. Vachier +24
The population of large asteroids is thought to be primordial and they are the most direct witnesses of the early history of our Solar System. Those satellites allow study of the m…
The structure of Chariklo's rings from stellar occultations
D. Bérard, B. Sicardy, J. I. B. Camargo +79
Two narrow and dense rings (called C1R and C2R) were discovered around the Centaur object (10199) Chariklo during a stellar occultation observed on 2013 June 3. Following this disc…
Extreme AO Observations of Two Triple Asteroid Systems with SPHERE
B. Yang, Z. Wahhaj, L. Beauvalet +5
We present the discovery of a new satellite of asteroid (130) Elektra - S/2014 (130) 1 - in differential imaging and in integral field spectroscopy data over multiple epochs obtain…
Pluto's atmosphere from stellar occultations in 2012 and 2013
A. Dias-Oliveira, B. Sicardy, E. Lellouch +42
We analyze two multi-chord stellar occultations by Pluto observed on July 18th, 2012 and May 4th, 2013, and monitored respectively from five and six sites. They provide a total of…
Similar origin for low- and high-albedo Jovian Trojans and Hilda asteroids ?
Michaël Marsset, Pierre Vernazza, Florian Gourgeot +4
Hilda asteroids and Jupiter Trojans are two low-albedo (p ~ 0.07) populations for which the Nice model predicts an origin in the primordial Kuiper Belt region. However, r…
Discovery of a probable 4-5 Jupiter-mass exoplanet to HD 95086 by direct-imaging
J. Rameau, G. Chauvin, A. -M. Lagrange +13
Direct imaging has just started the inventory of the population of gas giant planets on wide-orbits around young stars in the solar neighborhood. Following this approach, we carrie…
A survey of young, nearby, and dusty stars to understand the formation of wide-orbit giant planets
J. Rameau, G. Chauvin, A. -M. Lagrange +7
Direct imaging has confirmed the existence of substellar companions on wide orbits. To understand the formation and evolution mechanisms of these companions, the full population pr…
The Resolved Asteroid Program - Size, shape, and pole of (52) Europa
W. J. Merline, J. D. Drummond, B. Carry +14
With the adaptive optics (AO) system on the 10 m Keck-II telescope, we acquired a high quality set of 84 images at 14 epochs of asteroid (52) Europa on 2005 January 20. The epochs…
Characterisation of candidate members of (136108) Haumea's family: II. Follow-up observations
Benoit Carry, Colin Snodgrass, Pedro Lacerda +2
From a dynamical analysis of the orbital elements of transneptunian objects (TNOs), Ragozzine & Brown reported a list of candidate members of the first collisional family found amo…
Shape modeling technique KOALA validated by ESA Rosetta at (21) Lutetia
B. Carry, M. Kaasalainen, W. J. Merline +12
We present a comparison of our results from ground-based observations of asteroid (21) Lutetia with imaging data acquired during the flyby of the asteroid by the ESA Rosetta missio…
The remarkable surface homogeneity of the Dawn mission target (1) Ceres
Benoit Carry, Pierre Vernazza, Christophe Dumas +7
Dwarf-planet (1) Ceres is one of the two targets, along with (4) Vesta, that will be studied by the NASA Dawn spacecraft via imaging, visible and near-infrared spectroscopy, and ga…
High-contrast observations of 136108 Haumea. A crystalline water-ice multiple system
Christophe Dumas, Benoit Carry, Daniel Hestroffer +1
Context. The trans-neptunian region of the Solar System is populated by a large variety of icy bodies showing great diversity in orbital behavior, size, surface color and compositi…
Physical properties of ESA Rosetta target asteroid (21) Lutetia: Shape and flyby geometry
B. Carry, M. Kaasalainen, C. Leyrat +22
Aims. We determine the physical properties (spin state and shape) of asteroid (21) Lutetia, target of the ESA Rosetta mission, to help in preparing for observations during the flyb…
The triaxial ellipsoid dimensions, rotational pole, and bulk density of ESA Rosetta target asteroid (21) Lutetia
J. D. Drummond, A. Conrad, W. J. Merline +6
We seek the best size estimates of the asteroid (21) Lutetia, the direction of its spin axis, and its bulk density, assuming its shape is well described by a smooth featureless tri…
First disk-resolved spectroscopy of (4) Vesta
Benoît Carry, Pierre Vernazza, Christophe Dumas +1
Vesta, the second largest Main Belt asteroid, will be the first to be explored in 2011 by NASA's Dawn mission. It is a dry, likely differentiated body with spectrum suggesting that…
Physical Properties of (2) Pallas
Benoit Carry, Christophe Dumas, Mikko Kaasalainen +8
We acquired and analyzed adaptive-optics imaging observations of asteroid (2) Pallas from Keck II and the Very Large Telescope taken during four Pallas oppositions between 2003 and…
Characterisation of candidate members of (136108) Haumea's family
Colin Snodgrass, Benoit Carry, Christophe Dumas +1
Ragozzine & Brown [2007] presented a list of candidate members of the first collisional family to be found among the trans-Neptunian Objects (TNOs), the one associated with (136108…
The LAOG-Planet Imaging Surveys
G. Chauvin, A. -M. Lagrange, D. Mouillet +18
With the development of high contrast imaging techniques and infrared detectors, vast efforts have been devoted during the past decade to detect and characterize lighter, cooler an…