Scientific background to the UKST H alpha survey

MRW Masheder*, S Phillipps, QA Parker

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

Abstract

The dominant process in the evolution of spiral galaxies like our own is clearly the formation of new stars, and the leading optical indicator of this is Ha emission. Considering the tremendous importance of star formation and its variation within and between galaxies, it is surprising just how little survey work has been carried out at H alpha. After the successful development of Tech Pan films for deep photographic imaging with the UKST, and given the particular sensitivity of Tech Pan at wavelengths near H alpha, it was natural to consider the possibilities for a narrowband Ha imaging survey of large angular extent. This idea quickly developed into a full-blown survey of the whole of the Southern Milky Way, of the Magellanic Clouds, and of selected extragalactic regions of interest such as that around the Virgo Cluster. This special issue is devoted to the discussion of the details of making and using this survey.

Original languageEnglish
Pages (from-to)5-8
Number of pages4
JournalPublications of the Astronomical Society of Australia
Volume15
Issue number1
Publication statusPublished - Apr 1998
EventInternational Workshop on Prospects for the AAO/UKST Galactic Plane H-Alpha Survey - SYDNEY, Australia
Duration: 16 Apr 199718 Apr 1997

Keywords

  • surveys
  • stars, formation
  • ISM, atoms
  • HII regions
  • galaxies, general
  • GALACTIC SYNCHROTRON EMISSION
  • PROPAGATING STAR FORMATION
  • SPIRAL GALAXIES
  • SURFACE BRIGHTNESS
  • MOLECULAR CLOUDS
  • REGION
  • LUMINOSITY
  • GRADIENTS
  • GIANT

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