A&A 464, 373-375 (2007)
Deep imaging survey of the environment of Centauri
II. CCD imaging with the NTT-SUSI2 cameraP. Kervella1 and F. Thévenin2
1 LESIA, UMR 8109, Observatoire de Paris-Meudon, 5 place Jules Janssen, 92195 Meudon Cedex, France
2 Laboratoire Cassiopée, Observatoire de la Côte d'Azur, BP 4229, 06304 Nice Cedex 4, France
(Received 22 September 2006 / Accepted 12 November 2006 )
Context.Thanks to its proximity, Centauri is an outstanding target for an imaging search for extrasolar planets.
Aims.We searched for faint comoving companions to Cen located at angular distances of a few tens of arcseconds, up to 2-3 arcmin.
Methods.We obtained CCD images from the NTT-SUSI2 instrument in the Bessel V, R, I, and Z bands, and archive data from 2MASS.
Results.We present a catalogue of the detected objects inside a 5.5 arcmin box around this star. A total of 4313 sources down to and were detected in the SUSI2 images. The infrared photometry of part of these sources has been extracted from the 2MASS images.
Conclusions.No comoving companion to Centauri were detected between 100 and 300 AU, down to a maximum mass of 15 times Jupiter. We also mostly exclude the presence of a companion more massive than 30 MJ between 50 and 100 AU.
Key words: stars: individual: Centauri -- planetary systems -- stars: imaging -- solar neighbourhood -- astronomical data bases: miscellaneous
© ESO 2007