Modelling star formation in Ophiuchus

Lomax, Oliver David ORCID: https://orcid.org/0000-0002-1641-4318, Whitworth, Anthony Peter ORCID: https://orcid.org/0000-0002-1178-5486, Cartwright, Annabel, Stamatellos, Dimitris and Walch, Stefanie K. 2014. Modelling star formation in Ophiuchus. Stamatellos, Dimitris, Goodwin, Simon and Ward-Thompson, Derek, eds. The Labyrinth of Star Formation, Vol. 36. Astrophysics and Space Science Proceedings, Springer, pp. 109-113. (10.1007/978-3-319-03041-8_20)

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Abstract

We perform simulations of prestellar core collapse with initial conditions inferred from observations of Ophiuchus. The cores in Ophiuchus are mostly isolated, hence we run multiple simulations of individual cores. We statistically model the intrinsic shapes of cores as a population of triaxial ellipsoids with a single free parameter which is fitted to aspect ratio data. We assume a turbulent velocity field with modifications which add ordered radial and rotational motion. Mass, size and non-thermal velocity dispersion are drawn randomly from observational data. Preliminary results show a largely realistic IMF. Future work will explore solenoidal to compressive velocity mode ratios and the effects of accretion luminosity. Results will lead to inferences on quantities such as star formation efficiency in the region.

Item Type:	Book Section
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	Springer
ISBN:	9783319030401
ISSN:	15706591
Last Modified:	14 May 2024 15:23
URI:	https://orca.cardiff.ac.uk/id/eprint/69587

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