30 November 2016 The GMOX science case: resolving galaxies through cosmic time
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Abstract
We present the key scientific questions that can be addressed by GMOX, a Multi-Object Spectrograph selected for feasibility study as a 4th generation instrument for the Gemini telescopes. Using commercial digital micro-mirror devices (DMDs) as slit selection mechanisms, GMOX can observe hundreds of sources at R~5000 between the U and K band simultaneously. Exploiting the narrow PSF delivered by the Gemini South GeMS MCAO module, GMOX can synthesize slits as small as 40mas reaching extremely faint magnitude limits, and thus enabling a plethora of applications and innovative science. Our main scientific driver in developing GMOX has been Resolving galaxies through cosmic time: GMOX 40mas slit (at GeMS) corresponds to 300 pc at z ~ 1:5, where the angular diameter distance reaches its maximum, and therefore to even smaller linear scales at any other redshift. This means that GMOX can take spectra of regions smaller than 300 pc in the whole observable Universe, allowing to probe the growth and evolution of galaxies with unprecedented detail. GMOXs multi-object capability and high angular resolution enable efficient studies of crowded fields, such as globular clusters, the Milky Way bulge, the Magellanic Clouds, Local Group galaxies and galaxy clusters. The wide-band simultaneous coverage and the very fast slit configuration mechanisms also make GMOX ideal for follow-up of LSST transients.
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Mario Gennaro, Mario Gennaro, Massimo Robberto, Massimo Robberto, Timothy Heckman, Timothy Heckman, Stephen A. Smee, Stephen A. Smee, Robert Barkhouser, Robert Barkhouser, Zoran Ninkov, Zoran Ninkov, Angela Adamo, Angela Adamo, George Becker, George Becker, Andrea Bellini, Andrea Bellini, Luciana Bianchi, Luciana Bianchi, Arjan Bik, Arjan Bik, Rongmon Bordoloi, Rongmon Bordoloi, Annalisa Calamida, Annalisa Calamida, Daniela Calzetti, Daniela Calzetti, Gisella De Rosa, Gisella De Rosa, Susana Deustua, Susana Deustua, Jason Kalirai, Jason Kalirai, Jennifer Lotz, Jennifer Lotz, John MacKenty, John MacKenty, Carlo Felice Manara, Carlo Felice Manara, Margaret Meixner, Margaret Meixner, Camilla Pacifici, Camilla Pacifici, Elena Sabbi, Elena Sabbi, Kailash Sahu, Kailash Sahu, Jason Tumlinson, Jason Tumlinson, } "The GMOX science case: resolving galaxies through cosmic time", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990849 (30 November 2016); doi: 10.1117/12.2232101; https://doi.org/10.1117/12.2232101
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