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Title:
Companion search around beta Pictoris with the newly commissioned L'-band vector vortex coronagraph on VLT/NACO
Authors:
Mawet, D.; Absil, O.; Milli, J.; Baudoz, P.; Boccaletti, A.; Chauvin, G.; Delacroix, C.; Girard, J. H.; Lagrange, A. M.; O'Neal, J.; Bourget, P.; Forsberg, P.; Gonte, F.; Habraken, S.; Hanot, C.; Karlsson, M.; Kasper, M.; Lizon, J.-L.; Muzic, K.; Olivier, R.; Peña, E.; Slusarenko, N.; Tacconi-Garman, L. E.; Surdej, J.
Affiliation:
AA(ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile ), AB(AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium), AC(ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile ), AD(LESIA, Observatoire de Paris, 5 pl. J. Janssen, F-92195 Meudon, France), AE(LESIA, Observatoire de Paris, 5 pl. J. Janssen, F-92195 Meudon, France), AF(IPAG, University Joseph Fourier, CNRS, BP 53, 38041, Grenoble, France), AG(AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium), AH(ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile ), AI(IPAG, University Joseph Fourier, CNRS, BP 53, 38041, Grenoble, France), AJ(ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile ), AK(ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile ), AL(Ångström Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala, Sweden), AM(ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile ), AN(AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium), AO(AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium), AP(Ångström Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala, Sweden), AQ(ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany), AR(ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany), AS(ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile ), AT(GDTech s.a., LIEGE Science Park, rue des Chasseurs Ardennais, B-4031 Liège, Belgium), AU(ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile ), AV(ESO, Alonso de Cordova 3107, Casilla 19001, Vitacura, Santiago 19, Chile ), AW(IPAG, University Joseph Fourier, CNRS, BP 53, 38041, Grenoble, France), AX(AGO, Université de Liège, 17 Allée du Six Août, B-4000 Liège, Belgium)
Publication:
Exploring the Formation and Evolution of Planetary Systems, Proceedings of the International Astronomical Union, IAU Symposium, Volume 299, pp. 50-51
Publication Date:
01/2014
Origin:
CUP
Keywords:
High contrast imaging, vortex coronagraphy, beta Pictoris b,
Abstract Copyright:
(c) 2014: Copyright © International Astronomical Union 2013
DOI:
10.1017/S1743921313007825
Bibliographic Code:
2014IAUS..299...50M

Abstract

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 beta 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.

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