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The Initial Mass Function of Young Open Clusters in the Galaxy: A Preliminary Result

Published online by Cambridge University Press:  31 March 2017

Beomdu Lim ,
Hwankyung Sung ,
Hyeonoh Hur  and
Byeong-Gon Park
Beomdu Lim
Affiliation:
Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 305-348, Korea email: bdlim1210@kasi.re.kr
Hwankyung Sung
Affiliation:
Dept. of Astronomy & Space Science, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 143-747, Korea
Hyeonoh Hur
Affiliation:
Dept. of Astronomy & Space Science, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 143-747, Korea
Byeong-Gon Park
Affiliation:
Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 305-348, Korea email: bdlim1210@kasi.re.kr Korea University of Science and Technology, Gajeong-ro, Yuseong-gu, Daejeon 305-333, Korea
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Abstract

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The initial mass function (IMF) is an essential tool with which to study star formation processes. We have initiated the photometric survey of young open clusters in the Galaxy, from which the stellar IMFs are obtained in a homogeneous way. A total of 16 famous young open clusters have preferentially been studied up to now. These clusters have a wide range of surface densities (log σ = −1 to 3 [stars pc−2] for stars with mass larger than 5M⊙) and cluster masses (Mcl = 165 to 50, 000M⊙), and also are distributed in five different spiral arms in the Galaxy. It is possible to test the dependence of star formation processes on the global properties of individual clusters or environmental conditions. We present a preliminary result on the variation of the IMF in this paper.

Keywords

stars: luminosity functionmass functionopen clusters and associations: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S316: Formation, evolution, and survival of massive star clusters , August 2015 , pp. 357 - 358
Copyright
Copyright © International Astronomical Union 2017 

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