The implications of clustered star formation for (proto)planetary systems and habitability
arXiv:1901.04491 · doi:10.1017/S1743921319001686
Abstract
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.
5 pages, 1 figure; to appear in the proceedings of IAU Symposium 345, Origins: from the Protosun to the First Steps of Life, Eds. B. G. Elmegreen, L. V. Tóth, M. Güdel, Cambridge University Press
References in corpus (13)
- Cosmic Star Formation History
- The E-MOSAICS Project: simulating the formation and co-evolution of galaxies and their star cluster populations
- On the Star Formation Rate - Brightest Cluster Relation: Estimating the peak SFR in post-merger galaxies
- Protoplanetary disc truncation mechanisms in stellar clusters: comparing external photoevaporation and tidal encounters
- Probing the role of the galactic environment in the formation of stellar clusters; using M83 as a test bench
- Variations in Stellar Clustering with Environment: Dispersed Star Formation and the Origin of Faint Fuzzies
- Cloud Scale ISM Structure and Star Formation in M51
- Protoplanetary Disk Properties in the Orion Nebula Cluster: Initial Results from Deep, High-Resolution ALMA Observations
- The E-MOSAICS project: tracing galaxy formation and assembly with the age-metallicity distribution of globular clusters
- The Star Formation Efficiency per Free Fall Time in Nearby Galaxies
- Protoplanetary disc evolution affected by star-disc interactions in young stellar clusters
- Not all stars form in clusters - measuring the kinematics of OB associations with
- A high cluster formation efficiency in the Sagittarius B2 complex