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Companion search around β Pictoris with the newly commissioned L'-band vector vortex coronagraph on VLT/NACO

Published online by Cambridge University Press:  06 January 2014

D. Mawet ,
O. Absil ,
J. Milli ,
P. Baudoz ,
A. Boccaletti ,
G. Chauvin ,
C. Delacroix ,
J. H. Girard ,
A. M. Lagrange  and
J. O'Neal
...Show all authors
D. Mawet
Affiliation:
ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile email: [email protected]
O. Absil
Affiliation:
AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium
J. Milli
Affiliation:
ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile email: [email protected] IPAG, University Joseph Fourier, CNRS, BP 53, 38041, Grenoble, France
P. Baudoz
Affiliation:
LESIA, Observatoire de Paris, 5 pl. J. Janssen, F-92195 Meudon, France
A. Boccaletti
Affiliation:
LESIA, Observatoire de Paris, 5 pl. J. Janssen, F-92195 Meudon, France
G. Chauvin
Affiliation:
IPAG, University Joseph Fourier, CNRS, BP 53, 38041, Grenoble, France
C. Delacroix
Affiliation:
AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium
J. H. Girard
Affiliation:
ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile email: [email protected]
A. M. Lagrange
Affiliation:
IPAG, University Joseph Fourier, CNRS, BP 53, 38041, Grenoble, France
J. O'Neal
Affiliation:
ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile email: [email protected]
P. Bourget
Affiliation:
ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile email: [email protected]
P. Forsberg
Affiliation:
Ångström Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala, Sweden
F. Gonte
Affiliation:
ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile email: [email protected]
S. Habraken
Affiliation:
AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium
C. Hanot
Affiliation:
AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium
M. Karlsson
Affiliation:
Ångström Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala, Sweden
M. Kasper
Affiliation:
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
J.-L. Lizon
Affiliation:
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
K. Muzic
Affiliation:
ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile email: [email protected]
R. Olivier
Affiliation:
GDTech s.a., LIEGE Science Park, rue des Chasseurs Ardennais, B-4031 Liège, Belgium
E. Peña
Affiliation:
ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile email: [email protected]
N. Slusarenko
Affiliation:
ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile email: [email protected]
L. E. Tacconi-Garman
Affiliation:
IPAG, University Joseph Fourier, CNRS, BP 53, 38041, Grenoble, France
J. Surdej
Affiliation:
AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium
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Abstract

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Here we present the installation and successful commissioning of an L'-band Annular Groove Phase Mask (AGPM) coronagraph on VLT/NACO. The AGPM is a vector vortex coronagraph made from diamond subwavelength gratings tuned to the L' band. The vector vortex coronagraph enables high contrast imaging at very small inner working angle (here 0″.09, the diffraction limit of the VLT at L'), potentially being the key to a new parameter space. During technical and science verification runs, we discovered a late-type companion at two beamwidths from an F0V star (Mawet et al. 2013), and imaged the inner regions of β Pictoris down to the previously unexplored projected radius of 1.75 AU. The circumstellar disk was also resolved from ≃ 1″ to 5″ (see J. Milli et al., these proceedings). These results showcase the potential of the NACO L-band AGPM over a wide range of spatial scales.

Keywords

High contrast imagingvortex coronagraphyβ Pictoris b
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S299: Exploring the Formation and Evolution of Planetary Systems , June 2013 , pp. 50 - 51
Copyright
Copyright © International Astronomical Union 2013 

References

Absil, O. & Mawet, D. 2010, A&ARv, 18, 317Google Scholar
Delacroix, C., Absil, O., Forsberg, P., et al. 2013, A&A, 553, 98Google Scholar
Mawet, D., Absil, O., Delacroix, , et al. 2013, A&AL, 552, 13Google Scholar