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Proceedings Paper

Morphology of distant galaxies with MCAO
Author(s): Benoit Neichel; Marc Huertas-Company; Thibaud Huellou; Benoit Epinat; Mathieu Puech; Damien Gratadour
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Paper Abstract

To understand the physical processes taking place in galaxy formation and evolution, the ability to obtain resolved spectroscopy and images across the objects is a must. Distant galaxies are marginally resolved in seeing-limited conditions and Adaptive Optics (AO) is required. Most of the current extra-galactic AO studies are however constrained by the number of targets available to AO correction (the so-called sky coverage), and the need for statistics, that requires observing many objects across the largest possible field. These constraints are now significantly reduced by the new Wide Field AO systems, like GeMS, the Gemini MCAO system. In this paper, we try to understand the impact of the AO-PSF on the galaxies' morphology analysis accuracy. For this, we use realistic simulated data in order to assess the morphological parameters, taking into account partial PSF knowledge. This allows us to define the critical parameters of the MCAO PSF affecting the analysis accuracy.

Paper Details

Date Published: 21 July 2014
PDF: 11 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 91484O (21 July 2014); doi: 10.1117/12.2055326
Show Author Affiliations
Benoit Neichel, Lab. d'Astrophysique de Marseille, CNRS, Aix Marseille Univ. (France)
Marc Huertas-Company, GEPI, CNRS, Observatoire de Paris à Meudon (France)
Thibaud Huellou, GEPI, CNRS, Observatoire de Paris à Meudon (France)
Benoit Epinat, Lab. d'Astrophysique de Marseille, CNRS, Aix Marseille Univ. (France)
Mathieu Puech, GEPI, CNRS, Observatoire de Paris à Meudon (France)
Damien Gratadour, LESIA, CNRS, Observatoire de Paris (France)

Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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