4 August 2016 Hector: a new massively multiplexed IFU instrument for the Anglo-Australian Telescope
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Abstract
Hector[1,2,3] will be the new massively-multiplexed integral field spectroscopy (IFS) instrument for the Anglo-Australian Telescope (AAT) in Australia and the next main dark-time instrument for the observatory. Based on the success of the SAMI instrument, which is undertaking a 3400-galaxy survey, the integral field unit (IFU) imaging fibre bundle (hexabundle) technology under-pinning SAMI is being improved to a new innovative design for Hector. The distribution of hexabundle angular sizes is matched to the galaxy survey properties in order to image 90% of galaxies out to 2 effective radii. 50-100 of these IFU imaging bundles will be positioned by ‘starbug’ robots across a new 3-degree field corrector top end to be purpose-built for the AAT. Many thousand fibres will then be fed into new replicable spectrographs. Fundamentally new science will be achieved compared to existing instruments due to Hector's wider field of view (3 degrees), high positioning efficiency using starbugs, higher spectroscopic resolution (R=3000-5500 from 3727-7761Å, with a possible redder extension later) and large IFUs (up to 30 arcsec diameter with 61-217 fibre cores). A 100,000 galaxy IFS survey with Hector will decrypt how the accretion and merger history and large-scale environment made every galaxy different in its morphology and star formation history. The high resolution, particularly in the blue, will make Hector the only instrument to be able to measure higher-order kinematics for galaxies down to much lower velocity dispersion than in current large IFS galaxy surveys, opening up a wealth of new nearby galaxy science.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Julia J. Bryant, Julia J. Bryant, Joss Bland-Hawthorn, Joss Bland-Hawthorn, Jon Lawrence, Jon Lawrence, Scott Croom, Scott Croom, David Brown, David Brown, Sudharshan Venkatesan, Sudharshan Venkatesan, Peter R. Gillingham, Peter R. Gillingham, Ross Zhelem, Ross Zhelem, Robert Content, Robert Content, Will Saunders, Will Saunders, Nicholas F. Staszak, Nicholas F. Staszak, Jesse van de Sande, Jesse van de Sande, Warrick Couch, Warrick Couch, Sergio Leon-Saval, Sergio Leon-Saval, Julia Tims, Julia Tims, Richard McDermid, Richard McDermid, Adam Schaefer, Adam Schaefer, } "Hector: a new massively multiplexed IFU instrument for the Anglo-Australian Telescope", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99081F (4 August 2016); doi: 10.1117/12.2230740; https://doi.org/10.1117/12.2230740
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