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Star formation efficiency of magnetized, turbulent and rotating molecular cloud

Published online by Cambridge University Press:  29 January 2021

Gemechu M. Kumssa  and
Solomon Belay Tessema
Gemechu M. Kumssa
Affiliation:
Ethiopian Space Science and Technology Institute (ESSTI), Entoto Observatory and Research Center (EORC), Astronomy and Astrophysics Research and Development Division, P. O. Box 33679, Addis Ababa, Ethiopia Addis Ababa University, P. O. Box 1176, Addis Ababa, Ethiopia Jimma University, College of Natural Sciences, Department of Physics, Jimma, Ethiopia, emails: [email protected]; [email protected]
Solomon Belay Tessema
Affiliation:
Ethiopian Space Science and Technology Institute (ESSTI), Entoto Observatory and Research Center (EORC), Astronomy and Astrophysics Research and Development Division, P. O. Box 33679, Addis Ababa, Ethiopia Addis Ababa University, P. O. Box 1176, Addis Ababa, Ethiopia
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Abstract

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The formation of stars constitutes one of the basic problems in astrophysics. Understanding star formation efficiency of molecular clouds (MCs) of a galaxy is necessary for studying the galactic evolution. Present data and theoretical formulations show that the structure and dynamics of the interstellar medium (ISM) are extremely complex. Therefore, there is no simple model that can explain adequately the star formation efficiency of MCs because of its complex nature. The initial mass of the cloud needed for collapse varies based on the environment in which the cloud resides and the strength of its magnetic field, turbulence, as well as the speed of rotation. In this paper, we estimate the star formation efficiency by combining pre-determined models and the critical mass formulated by Kumssa & Tessema (2018).

Keywords

Starsstar formationcritical mass
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S356: Nuclear Activity in Galaxies Across Cosmic Time , October 2019 , pp. 388 - 389
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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