Mawet, D. and Absil, O. and Milli, J. and Baudoz, P. and Boccaletti, A. and Chauvin, G. and Delacroix, C. and Girard, J. H. and Lagrange, A. M. and O'Neal, J. and Bourget, P. and Forsberg, P. and Gonte, F. and Habraken, S. and Hanot, C. and Karlsson, M. and Kasper, M. and Lizon, J.-L. and Muzic, K. and Olivier, R. and Peña, E. and Slusarenko, N. and Tacconi-Garman, L. E. and Surdej, J. (2014) Companion search around β Pictoris with the newly commissioned L’-band vector vortex coronagraph on VLT/NACO. In: Exploring the Formation and Evolution of Planetary Systems. Proceedings IAU Symposium. No.299. Cambridge University Press , New York, NY, pp. 50-51. ISBN 9781107045200 . http://resolver.caltech.edu/CaltechAUTHORS:20150529-071530204
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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.
| Item Type: | Book Section | |||||||||
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| Additional Information: | © 2013 International Astronomical Union. | |||||||||
| Subject Keywords: | High contrast imaging, vortex coronagraphy, β Pictoris b | |||||||||
| Series Name: | Proceedings IAU Symposium | |||||||||
| Issue or Number: | 299 | |||||||||
| Record Number: | CaltechAUTHORS:20150529-071530204 | |||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20150529-071530204 | |||||||||
| Official Citation: | D. Mawet, O. Absil, J. Milli, P. Baudoz, A. Boccaletti, G. Chauvin, C. Delacroix, J. H. Girard, A. M. Lagrange, J. O'Neal, P. Bourget, P. Forsberg, F. Gonte, S. Habraken, C. Hanot, M. Karlsson, M. Kasper, J.-L. Lizon, K. Muzic, R. Olivier, E. Peña, N. Slusarenko, L. E. Tacconi-Garman and J. Surdej (2013). Companion search around β Pictoris with the newly commissioned L'-band vector vortex coronagraph on VLT/NACO . Proceedings of the International Astronomical Union, 8, pp 50-51. doi:10.1017/S1743921313007825. | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 57892 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 29 May 2015 17:18 | |||||||||
| Last Modified: | 17 Jul 2019 22:23 |
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