A deep look into the core of young clusters. II. lambda-Orionis (2009)
Bouy, H., Huelamo, N., Navascues, D. Barrado Y, Martin, E. L., Petr-Gotzens, M. G., Kolb, J., ...
Over the past years, the lambda-Orionis cluster has been a prime location for the study of young very low mass stars, substellar and isolated planetary mass objects and the determination of the...
A Giant Crater on 90 Antiope? (2009)
Descamps, P., Marchis, F., Michalowski, T., Berthier, J., Pollock, J., Wiggins, P., ...
Mutual event observations between the two components of 90 Antiope were carried out in 2007-2008. The pole position was refined to lambda0 = 199.5+/-0.5 eg and beta0 = 39.8+/-5 deg in J2000 ecliptic...
New insights on the binary asteroid 121 Hermione (2009)
Descamps, P., Marchis, F., Durech, J., Emery, J., Harris, A. W., Kaasalainen, M., ...
We report on the results of a six-month photometric study of the main-belt binary C-type asteroid 121 Hermione, performed during its 2007 opposition. We took advantage of the rare observational...
Astronomy Astrophysics Adaptive optics observations of asteroid (216) Kleopatra ⋆ (2008)
D. Hestroffer, F. Marchis, T. Fusco, J. Berthier
Abstract. The large main-belt asteroid (216) Kleopatra has been for long suspected to be a binary object, mainly due to its large lightcurve amplitude. However, recent observations suggest that it is...
Mid-infrared spectra of binary asteroids with Spitzer/IRS (2008)
Marchis, F., Emery, J.P., Iglesias, J., Pollock, J., Mueller, M, Harris, A.W., ...
To date, 162 asteroids are known to be binary or multiple systems. Insights, such as the size and shape of their components, the nature of their surface, their bulk density are the key to...
A deep look into the cores of young clusters I. sigma-Orionis (2008)
Bouy, H., Huelamo, N., Martin, E. L., Marchis, F., Navascues, D. Barrado Y, Kolb, J., ...
Nearby young clusters are privileged places to study the star formation history. Over the last decade, the sigma-Orionis cluster has been a prime location for the study of young very low mass stars,...
Bouy, H., Huélamo, N., Pinte, C., Olofsson, J., Martín, E. L., ...
Aims. To improve our understanding of substellar formation, we have performed a compositional and structural study of a brown dwarf disk. Methods: We present the results of photometric,...
Main Belt Binary Asteroidal Systems With Circular Mutual Orbits (2008)
Marchis, F., Descamps, P., Baek, M., Harris, A. W., Kaasalainen, M., Berthier, J., ...
In 2003, we initiated a long-term adaptive optics campaign to study the orbit of various main-belt asteroidal systems. Here we present a consistent solution for the mutual orbits of four binary...
Main Belt Binary Asteroidal Systems With Eccentric Mutual Orbits (2008)
Marchis, F., Descamps, P., Berthier, J., Hestroffer, D., Vachier, F., Baek, M., ...
Using 8m-10m class telescopes and their Adaptive Optics (AO) systems, we conducted a long-term adaptive optics campaign initiated in 2003 focusing on four binary asteroid systems: (130) Elektra,...
Descamps, P., Marchis, F., Pollock, J., Berthier, J., Vachier, F., Birlan, M., ...
In 2007, the M-type binary Asteroid 22 Kalliope reached one of its annual equinoxes. As a consequence, the orbit plane of its small moon, Linus, was aligned closely to the Sun's line of sight, giving...
Main belt binary asteroidal systems with circular mutual orbits (2008)
Marchis, F., Descamps, P., Baek, M., Harris, A.W., Kaasalainen, M., Berthier, J., ...
In 2003, we initiated a long-term Adaptive Optics campaign to study the orbit of various main-belt asteroidal systems. Here we present a consistent solution for the mutual orbits of four binary...
Bouy, H., Huelamo, N., Pinte, C., Olofsson, J., Navascues, D. Barrado Y, Martin, E. L., ...
In order to improve our understanding of substellar formation, we have performed a compositional and structural study of a brown dwarf disk. We present the result of photometric, spectroscopic and...
Follow-up observations of binary ultra-cool dwarfs (2008)
Bouy, H., Martin, E. L., Brandner, W., Forveille, T., Delfosse, X., Huelamo, N., ...
Astrometric observations of resolved binaries provide estimates of orbital periods and will eventually lead to measurement of dynamical masses. Only a few very low mass star and brown dwarf masses...
Follow-up observations of binary ultra-cool dwarfs (2008)
Bouy, H., Martín, E. L., Brandner, W., Forveille, T., Delfosse, X., Huélamo, N., ...
Context: Astrometric observations of resolved binaries provide estimates of orbital periods and will eventually lead to measurement of dynamical masses. Only a few very low mass star and brown dwarf...
Follow-up observations of binary ultra-cool dwarfs (2008)
Bouy, H., Martín, E. L., Brandner, W., Forveille, T., Delfosse, X., Huélamo, N., ...
Context. Astrometric observations of resolved binaries provide estimates of orbital periods and will eventually lead to measurement of dynamical masses. Only a few very low mass star and brown dwarf...
S. G. Els, F. Marchis, E. Pantin, M. Endl
Astronomy & Astrophysics manuscript no. (will be inserted by hand later) A second substellar companion in the Gliese 86 system. A brown dwarf in an extrasolar planetary system.
Descamps, P., Marchis, F., Pollock, J., Berthier, J., Vachier, F., Birlan, M., ...
In 2007, the M-type binary asteroid 22 Kalliope reached one of its annual equinoxes. As a consequence, the orbit plane of its small moon, Linus, was aligned closely to the Sun's line of sight, giving...
SMART-1 Impact Ground-based campaign (2007)
Ehrenfreund, P., Foing, B. H., Veillet, C., Wooden, D., Gurvits, L., Cook, A. C., ...
Based on predictions of impact magnitude and cloud ejecta dynamics, we organized a SMART-1 ground-based observation campaign to perform coordinated measurements of the impact. Results from the...
Photometric Survey of Binary Near-Earth Asteroids (2006)
Pravec, Petr, Scheirich, P., Kusnirak, P., Sarounova, L., Mottola, Stefano, Hahn, Gerhard, ...
Photometric data on 17 binary near-Earth asteroids (15 of them are certain detections, two are probables) were analysed and characteristic properties of the near-Earth asteroid (NEA) binary...
Near-IR coronagraphic imaging of the companion to HR 7672 (2005)
Boccaletti, A., Chauvin, G., Marchis, F.
This article presents coronagraphic images of the low-mass companion to the star HR 7672 observed at the Palomar 200 inch telescope and first detected at Gemini and Keck in the K band by...
Ground-based near-infrared imaging of the HD141569 circumstellar disk (2005)
Boccaletti, A., Augereau, J. C., Marchis, F., Hanh, J.
We present the first ground-based near-infrared image of the circumstellar disk around the post-Herbig Ae/Be star HD141569A initially detected with the HST. Observations were carried out in the...
Discovery of the triple asteroidal system 87 Sylvia (2005)
Marchis, F, Descamps, P, Hestroffer, D, Berthier, J
After decades of speculation(1), the existence of binary asteroids has been observationally confirmed(2,3), with examples in all minor planet populations(4). However, no triple systems have hitherto...
Keck AO survey of Io global volcanic activity between 2 and 5 mu m (2005)
Marchis, F, Le Mignant, D, Chaffee, F H, Davies, A G, Kwok, S H, Prange, R, ...
We present in this Keck AO paper the first global high angular resolution observations of Io in three broadband near-infrared filters: Kc (2.3 mu m), Lp (3.8 mu m), and Ms (4.7 mu m). The Keck AO...
Near-IR coronagraphic imaging of the companion to HR 7672 (2003)
Boccaletti, A., Chauvin, G., Marchis, F.
This article presents coronagraphic images of the low-mass companion to the star HR 7672 observed at the Palomar 200 inch telescope and first detected at Gemini and Keck in the K band by...
Near-IR coronagraphic imaging of the companion to HR 7672 (2003)
Boccaletti, A., Chauvin, G., Marchis, F.
This article presents coronagraphic images of the low-mass companion to the star HR 7672 observed at the Palomar 200 inch telescope and first detected at Gemini and Keck in the K band by...
Near-IR coronagraphic imaging of the companion to HR 7672 (2003)
Boccaletti, A., Chauvin, G., Marchis, F.
This article presents coronagraphic images of the low-mass companion to the star HR 7672 observed at the Palomar 200 inch telescope and first detected at Gemini and Keck in the K band by...
Ground-based near-infrared imaging of the HD141569 circumstellar disk (2002)
Boccaletti, A., Augereau, J. C., Marchis, F., Hanh, J.
We present the first ground-based near-infrared image of the circumstellar disk around the post-Herbig Ae/Be star HD141569A initially detected with the HST. Observations were carried out in the...
No disk needed around HD 199143 B (2002)
Chauvin, G., Fusco, T., Lagrange, A-M., Mouillet, D., Beuzit, J-L., Thomson, M., ...
We present new, high angular resolution images of HD 199143 in the Capricornus association, obtained with the adaptive optics system ADONIS+SHARPII at the ESO 3.6m Telescope of La Silla Observatory....
Ground-based near-infrared imaging of the HD141569 circumstellar disk (2002)
Boccaletti, A., Augereau, J. C., Marchis, F., Hanh, J.
We present the first ground-based near-infrared image of the circumstellar disk around the post-Herbig Ae/Be star HD141569A initially detected with the HST. Observations were carried out in the...
Ground-based near-infrared imaging of the HD141569 circumstellar disk (2002)
Boccaletti, A., Augereau, J. C., Marchis, F., Hanh, J.
We present the first ground-based near-infrared image of the circumstellar disk around the post-Herbig Ae/Be star HD141569A initially detected with the HST. Observations were carried out in the...
Post-perihelion monitoring of comet Hale-Bopp at ESO (2002)
Boehnhardt, H., Bonfils, X., Petit, Y., Hainaut, O., Delahodde, C., Jorda, L., ...
The post-perihelion coma activity of Comet C/1995 O1 Hale-Bopp is monitored at ESO telescopes in La Silla and Paranal since Sept. 1997. Imaging through broadband filters in the visible and near-IR...