The 12 UM Contribution of Nearby Galaxies to the Infrared Background

Abstract

The far infrared properties of normal non-infrared-bright galaxies were studied as a function of their morphological type using a sample of 1544 galaxies of magnitude less than 14.5. Most of the far infrared color trends as a function of galaxian morphological type can be reproduced by dust models with three components, combined with an appropriate dust heating spectral energy distribution. Work has been done on the use of far infrared luminosity as a star formation indicator in galaxies. The trends observed are consistent with a two- component model, with the citrus fraction as the second parameter and the star formation rate as the first parameter. Observations have been made and studies performed on dwarf and low surface brightness galaxies and starburst galaxies at intermediate red shifts.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1993
Accession Number
ADA264336

Entities

People

  • Trinh X. Thuan

Organizations

  • University of Virginia

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Brightness
  • Emission
  • Indicators
  • Luminosity
  • Radio Telescopes
  • Rate Of Formation
  • Sequences
  • Short Wavelengths
  • Spatial Distribution
  • Spectral Energy Distribution
  • Students
  • Teamwork
  • Telescopes
  • Translations

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.