A textbook case of bow shock entrainment in a YSO outflow

Davis, C.J. and Smith, M.D. and Moriarty-Schieven, G.H. (1998) A textbook case of bow shock entrainment in a YSO outflow. Monthly Notices of the Royal Astronomical Society, 299 (3). pp. 825-833. ISSN 0035-8711. (doi:https://doi.org/10.1046/j.1365-8711.1998.01811.x) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1046/j.1365-8711.1998.01811.x

Abstract

Near-infrared images in H2 line emission and submillimetre maps in CO J = 3-2 emission illustrate the remarkable association between a molecular bow shock and the redshifted molecular outflow lobe in W75N. The flow lobe fits perfectly into the wake of the bow, as one would expect if the lobe represented swept-up gas. Indeed, these observations strongly support the 'bow shock' entrainment scenario for molecular outflows driven by young stars. The characteristics of the bow shock and CO outflow lobe are compared with those of numerical simulations of jet-driven flows. These models successfully reproduce the bulge and limb-brightening in the CO outflow, although the model H2 bow exhibits more structure extending back along the flow axis. We also find that the size of the flow, the high mass fraction in the flow at low outflow velocities (low ? values) and the high CO/H2 luminosity ratio indicate that the system is evolved. We also predict a correlation, in evolved systems, between outflow age and the CO/H2 luminosity ratio.

Item Type: Article
Uncontrolled keywords: Circumstellar matter, Infrared: ISM: lines and bands, Infrared: stars, ISM: individual: W75N, ISM: jets and outflows, ISM: kinematics and dynamics
Subjects: Q Science > QB Astronomy > QB460 Astrophysics
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Giles Tarver
Date Deposited: 11 Aug 2015 10:26 UTC
Last Modified: 12 Aug 2015 15:42 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50147 (The current URI for this page, for reference purposes)
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