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The implications of clustered star formation for (proto)planetary systems and habitability

Kruijssen, JMD and Longmore, SN (2020) The implications of clustered star formation for (proto)planetary systems and habitability. Proceedings of the International Astronomical Union, 14. pp. 61-65. ISSN 1743-9213

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Star formation is spatially clustered across a range of environments, from dense stellar clusters to unbound associations. As a result, radiative or dynamical interactions with neighbouring stars disrupt (proto)planetary systems and limit their radii, leaving a lasting impact on their potential habitability. In the solar neighbourhood, we find that the vast majority of stars form in unbound associations, such that the interaction of (proto)planetary systems with neighbouring stars is limited to the densest sub-regions. However, the fraction of star formation occurring in compact clusters was considerably higher in the past, peaking at ~50% in the young Milky Way at redshift z~2. These results demonstrate that the large-scale star formation environment affects the demographics of planetary systems and the occupation of the habitable zone. We show that planet formation is governed by multi-scale physics, in which Mpc-scale events such as galaxy mergers affect the AU-scale properties of (proto)planetary systems.

Item Type: Article
Uncontrolled Keywords: astro-ph.EP; astro-ph.EP; astro-ph.GA
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: Cambridge University Press
Related URLs:
Date Deposited: 23 Jan 2019 09:01
Last Modified: 04 Sep 2021 09:48
DOI or ID number: 10.1017/S1743921319001686
URI: https://researchonline.ljmu.ac.uk/id/eprint/9975
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