Hector - performance of the new integral field spectrograph instrument for the Anglo-Australian Telescope

Julia J. Bryant*, Sree Oh, Madusha Gunawardhana, Gabriella Quattropani, Gurashish Singh Bhatia, Joss Bland-Hawthorn, David Broderick, Rebecca Brown, Robert Content, Scott Croom, Fred Crous, Tony Farrell, Peter Gillingham, Ellen Houston, Jon Lawrence, Helen McGregor, Seong-Sik Minh, Mahesh Mohanan, Barnaby Norris, Matthew OwersNaveen Pai, David Robertson, Will Saunders, Sam Vaughan, Sudharshan Venkatesan, Adeline Wang, Ross Zhelem, Jessica Zheng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

Hector is a new optical integral field spectrograph (IFS) instrument built by Astralis - Australia's Astronomical Instrumentation Consortium. Hector was commissioned on the Anglo-Australian Telescope (AAT) in 2022. In 2023 it began a 15,000-galaxy IFS survey of nearby z< 0.1 galaxies. The high fill-factor imaging fibre bundles 'hexabundles' of the type used on the SAMI instrument, have been improved and enlarged to cover up to 27-arcsec diameter. The aim is to reach 2 effective radii on most galaxies. Hector has a unique and novel robotic positioner that compensates for varying telecentricity over the 2-degree-field of the AAT to recoup the light loss and correct the focus across the field. Hector has 21 hexabundles over that 2-degree field feeding both the new Hector spectrograph (Spector) and existing AAOmega spectrograph. The new dual-arm Spector spectrograph has the highest spectral resolution of any large IFS nearby galaxy survey of 1.3 Angstrom. This is key to enable higher order stellar kinematics to be measured on a larger fraction of galaxies and to link those galaxies to the large-scale environments in which they form. A data reduction pipeline has been developed and is producing science-quality galaxy cubes and the first internal data release is now being used for science.

Original languageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy X
EditorsJulia J. Bryant, Kentaro Motohara, Joël R. Vernet
Place of PublicationWashington
PublisherSPIE
Pages1-11
Number of pages11
ISBN (Electronic)9781510675162
ISBN (Print)9781510675155
DOIs
Publication statusPublished - 2024
EventGround-Based and Airborne Instrumentation for Astronomy X 2024 - Yokohama, Japan
Duration: 16 Jun 202421 Jun 2024

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume13096
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceGround-Based and Airborne Instrumentation for Astronomy X 2024
Country/TerritoryJapan
CityYokohama
Period16/06/2421/06/24

Keywords

  • IFU
  • Hector
  • IFS
  • hexabundles
  • fibre positioner
  • AAT
  • spectroscopy
  • galaxy evolution

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