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Star Clusters Triggered by GS242-03+37

Published online by Cambridge University Press:  13 January 2020

Jan Palouš  and
Soňa Ehlerová
Jan Palouš
Affiliation:
Astronomical Institute, Academy of Sciences of the Czech Republic, Bočn II-1401, 141 00 Praha 4, Czech Republic email: palous@ig.cas.cz
Soňa Ehlerová
Affiliation:
Astronomical Institute, Academy of Sciences of the Czech Republic, Bočn II-1401, 141 00 Praha 4, Czech Republic email: palous@ig.cas.cz
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Abstract

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We explore the Milky Way supershell GS242-03+37. We argue that the observed HI distribution can be explained as an expanding structure about 100 Myr old powered with a modest energy released by an OB association. The formation of star clusters has been triggered less than 30 Myr ago when the ISM density in the supershell increased due to the galactic differential rotation. The observed age sequence of young star clusters is related to the evolution of the column density during the supershell expansion.

Keywords

ISM: structureISM: bubblesGalaxy: diskopen clusters and associations: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 279 - 280
Copyright
© International Astronomical Union 2020 

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