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A probable giant planet imaged in the Beta Pictoris disk
A. -M. Lagrange, D. Gratadour, G. Chauvin +12
Since the discovery of its dusty disk in 1984, Beta Pictoris has become the prototype of young early-type planetary systems, and there are now various indications that a massive Jo…
SSPMJ1102-3431 brown dwarf characterization from accurate proper motion and trigonometric parallax
R. Teixeira, C. Ducourant, G. Chauvin +3
In 2005, Scholz and collaborators (Scholz et al. 2005) discovered, in a proper motion survey, a young brown dwarf SSSPMJ1102-3431(SSSPMJ1102) of spectral type M8.5, probable member…
Coronagraphic near-IR photometry of AB Dor C
A. Boccaletti, G. Chauvin, P. Baudoz +1
Observations of low-mass companions for which the dynamical masses are well constrained help to improve the calibration of evolutionary models. Such observations thereby provide mo…
Mid-infrared imaging of brown dwarfs in binary systems
K. Geißler, G. Chauvin, M. F. Sterzik
Context: Brown dwarfs exhibit complex atmospheric signatures, and their properties depend sensitively on effective temperature, surface gravity, and metallicity. Several physical p…
Characterization of the long-period companions of the exoplanet host stars: HD196885, HD1237 and HD27442
G. Chauvin, A. -M. Lagrange, S. Udry +1
We present the results of near-infrared, follow-up imaging and spectroscopic observations at VLT, aimed at characterizing the long-period companions of the exoplanet host stars HD1…
Probing the Impact of Stellar Duplicity on Planet Occurrence with Spectroscopic and Imaging Observations
A. Eggenberger, S. Udry
Although it is commonly agreed that the presence of a close stellar companion is likely to affect planet formation and evolution, the precise effects and their actual impact on pla…