천문학회지 (Journal of The Korean Astronomical Society)

  • 제19권2호
  • /
  • Pages.51-62
  • /
  • 1986
  • /
  • 1225-4614(pISSN)
  • /
  • 2288-890X(eISSN)
한국천문학회 (The Korean Astronomical Society)
권호 표지

THE INITIAL MASS FUNCTION FOR THE SOLAR NEIGHBORHOOD STARS

  • Lee, See-Woo (Department of Astronomy Seoul National University) ;
  • Chun, Moo-Young (Department of Astronomy Seoul National University)
  • 발행 : 1986.12.31
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초록

The Wielen dip over the ragne of 6 < $M_{\upsilon}$ < 9 in the luminosity function (LF) for the solar neighborhood stars could be explained by the combination of two different IMFs which yields the age of 13 billion years of the solar neighborhood. This smaller age than the Galactic age, 15 billion years indicates the slow collapse model of the Galaxy, solving the G-dwarf problem. Two different IMFs suggest two different mechanisms for star formation in the solar neighborhood.

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