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Cloud-cloud collisions and triggered star formation

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arxiv 2009.05077 v3 pith:36BVL5GY submitted 2020-09-10 astro-ph.GA

Cloud-cloud collisions and triggered star formation

Yasuo Fukui , Asao Habe , Tsuyoshi Inoue , Rei Enokiya , Kengo Tachihara This is my paper
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keywords formationstarcloud-cloudcollisionsmassivetriggeredclusterexternal
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Star formation is a fundamental process for galactic evolution. One issue over the last several decades has been determining whether star formation is induced by external triggers or is self-regulated in a closed system. The role of an external trigger, which can effectively collect mass in a small volume, has attracted particular attention in connection with the formation of massive stellar clusters, which in the extreme may lead to starbursts. Recent observations have revealed massive cluster formation triggered by cloud-cloud collisions in nearby interacting galaxies, including the Magellanic system and the Antennae Galaxies as well as almost all well-known high-mass star-forming regions such as RCW 120, M20, M42, NGC 6334, etc., in the Milky Way. Theoretical efforts are laying the foundation for the mass compression that causes massive cluster/star formation. Here, we review the recent progress on cloud-cloud collisions and triggered star-cluster formation and discuss the future prospects for this area of research.

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Cited by 2 Pith papers

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  1. Bipolar HII regions Produced by Cloud-Cloud Collisions

    astro-ph.GA 2026-07 conditional novelty 5.0

    Head-on collisions of 500 M⊙ clouds form hub-filament systems and short-lived bipolar HII regions whose appearance depends strongly on viewing angle, with secondary radio and mid-IR metrics that may flag CCC origins.

  2. Chemistry of Dark Molecular Clouds

    astro-ph.GA 2026-07 unverdicted novelty 2.0

    A comprehensive review arguing that the chemically rich cores TMC-1 CP and L1544 are representative molecular-cloud laboratories, and that complex organic molecule production is largely insensitive to metallicity.