Morphology of distant galaxies with MCAO

Benoit Neichel; Marc Huertas-Company; Thibaud Huellou; Benoit Epinat; Mathieu Puech; Damien Gratadour

doi:10.1117/12.2055326

21 July 2014 Morphology of distant galaxies with MCAO

Benoit Neichel, Marc Huertas-Company, Thibaud Huellou, Benoit Epinat, Mathieu Puech, Damien Gratadour

Proceedings Volume 9148, Adaptive Optics Systems IV; 91484O (2014) https://doi.org/10.1117/12.2055326
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

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.

Citation Download Citation

Benoit Neichel, Marc Huertas-Company, Thibaud Huellou, Benoit Epinat, Mathieu Puech, and Damien Gratadour "Morphology of distant galaxies with MCAO", Proc. SPIE 9148, Adaptive Optics Systems IV, 91484O (21 July 2014); https://doi.org/10.1117/12.2055326

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