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Molecular Gas and Star Formation in Nearby Galaxies

  • Shinya Komugi
  • Yoshiaki Sofue
  • Hiroyuki Nakanishi
  • Sachiko Onodera
  • Fumi Egusa
  • Kazuyuki Muraoka
  • Judith S. Young
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP)

The quantitative relationship between molecular gas and star formation, or the Schmidt Law, was derived for the central kpc of nearby spiral galaxies using 12CO(J=1-0) line data and H αimaging. The CO spectra were obtained at the 45m telescope at Nobeyama Radio Observatory (NRO). The derived Schmidt law index is found to be affected significantly depending on galaxy distance, ranging from 0.7 to 1.3. The data covers the densest regions of normal spirals, and overlaps with starburst galaxies. We categorize the Schmidt law according to existence of bars. Barred galaxies are found to display a Schmidt law with higher gas density, but on the same Schmidt law track as non-barred samples.

Keywords

Star Formation Spiral Galaxy Narrow Band Imaging Star Formation Rate Nearby Galaxy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Shinya Komugi
    • 1
  • Yoshiaki Sofue
    • 1
  • Hiroyuki Nakanishi
    • 2
  • Sachiko Onodera
    • 1
  • Fumi Egusa
    • 1
  • Kazuyuki Muraoka
    • 1
  • Judith S. Young
    • 3
  1. 1.Institute of AstronomyUniversity of TokyoMitakaJapan
  2. 2.Nobeyama Radio ObservatoryNational Astronomical Observatory of JapanJapan
  3. 3.University of MassachussettsAmherstUSA

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