First science with SAMI

a serendipitously discovered Galactic wind in ESO 185-G031

Lisa M. R. Fogarty, Joss Bland-Hawthorn, Scott M. Croom, Andrew W. Green, Julia J. Bryant, Jon S. Lawrence, Samuel Richards, James T. Allen, Amanda E. Bauer, Michael N. Birchall, Sarah Brough, Matthew Colless, Simon C. Ellis, Tony Farrell, Michael Goodwin, Ron Heald, Andrew M. Hopkins, Anthony Horton, D. Heath Jones, Steve Lee & 10 others Geraint Lewis, Ángel R. López-Sánchez, Stan Miziarski, Holly Trowland, Sergio G. Leon-Saval, Seong Sik Min, Christopher Trinh, Gerald Cecil, Sylvain Veilleux, Kory Kreimeyer

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

We present the first scientific results from the Sydney-AAO Multi-Object IFS (SAMI) at the Anglo-Australian Telescope. This unique instrument deploys 13 fused fiber bundles (hexabundles) across a one-degree field of view allowing simultaneous spatially resolved spectroscopy of 13 galaxies. During the first SAMI commissioning run, targeting a single galaxy field, one object (ESO 185-G031) was found to have extended minor axis emission with ionization and kinematic properties consistent with a large-scale galactic wind. The importance of this result is twofold: (1) fiber bundle spectrographs are able to identify low surface brightness emission arising from extranuclear activity and (2) such activity may be more common than presently assumed because conventional multi-object spectrographs use single-aperture fibers and spectra from these are nearly always dominated by nuclear emission. These early results demonstrate the extraordinary potential of multi-object hexabundle spectroscopy in future galaxy surveys.

Original languageEnglish
Article number169
Pages (from-to)1-12
Number of pages12
JournalAstrophysical Journal
Volume761
Issue number2
DOIs
Publication statusPublished - 10 Dec 2012

Keywords

  • galaxies: evolution
  • galaxies: individual (ESO 185-G031)
  • galaxies: kinematics and dynamics
  • galaxies: star formation
  • techniques: imaging spectroscopy

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