Wright, NJ (2020) OB associations and their origins. New Astronomy Reviews, 90. ISSN 1387-6473

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OB associations are unbound groups of young stars made prominent by their bright OB members, and have long been thought to be the expanded remnants of dense star clusters. They have been important in astrophysics for over a century thanks to their luminous massive stars, though their low-mass members have not been well studied until the last couple of decades. This has changed thanks to data from X-ray observations, spectroscopic surveys and astrometry from Gaia that allows their full stellar content to be identified and their dynamics to be studied, which in turn is leading to changes in our understanding of these systems and their origins, with the old picture of Blaauw (1964) now being superseded. It is clear now that OB associations have considerably more substructure than once envisioned, both spatially, kinematically and temporally. These changes have implications for the star formation process, the formation and evolution of planetary systems, and the build-up of stellar populations across galaxies.

Item Type: Article
Additional Information: The final version of this accepted manuscript can be accessed online directly from the publishers at https://www.sciencedirect.com/science/article/pii/S1387647320300269
Uncontrolled Keywords: OB Associations; Star clusters; Young stars; Star formation; Stellar kinematics and dynamics
Subjects: Q Science > Q Science (General)
Q Science > QB Astronomy
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 23 Nov 2020 14:34
Last Modified: 03 Nov 2022 01:30
URI: https://eprints.keele.ac.uk/id/eprint/8929

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