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Mass-loading in Galactic Winds: the Role of Photoevaporation and Wind Ablation

Published online by Cambridge University Press:  17 September 2012

S.C.C. Yeh  and
C.D. Matzner
S.C.C. Yeh
Affiliation:
Department of Astronomy & Astrophysics, University of Toronto, 50 St. George St., Toronto, ON M5S 3H4, Canada
C.D. Matzner
Affiliation:
Department of Astronomy & Astrophysics, University of Toronto, 50 St. George St., Toronto, ON M5S 3H4, Canada
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Abstract

We present a dynamical scenario of instantaneous dense gas entrainment by stellar winds in a wind-dominated HII region. Stellar winds and radiation pressure will become more important in an HII region as the central star or cluster is sufficiently luminous, therefore the region is windswept instead of photoevaporation-dominated. In our model, a cloud is smaller than the region as a whole, hence its mass injection occurs through either ordinary photoevaporation or wind ablation. We predict that the instantaneous wind ablation will cause strong mixing between hot winds and warm gas, and the mass injection rate of the wind-confined photoevaporated flow is higher than that of the ionizing source.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 56: The Role of the Disk-Halo Interaction in Galaxy Evolution: Outflow vs. Infall? , 2012 , pp. 175 - 178
Copyright
© EAS, EDP Sciences, 2012

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References

Arthur, S.J., & Lizano, S., 1997, ApJ, 484, 810CrossRef
Bertoldi, F., & McKee, C.F., 1990, ApJ, 354, 529CrossRef
Dyson, J.E., 1994, in Star Formation Techniques in Infrared and mm-Wave Astronomy (Lecture Notes in Physics, 431), ed. T.P. Ray & S.V.W. Beckwith (Berlin: Springer),93CrossRefGoogle Scholar
Harper-Clark, E., & Murray, N., 2009, ApJ, 693, 1696CrossRef
Hartquist, T.W., Dyson, J.E., Pettini, M., & Smith, L.J., 1986, MNRAS, 221, 715CrossRef
Krumholz, M.R., Matzner, C.D., & McKee, C.F., 2006, ApJ, 653, 361CrossRef
Pittard, J.M., 2007, in Diffuse Matter from Star Forming Regions to Active Galaxies, ed. T.W. Hartquist et al. (Dordrecht: Springer), 245CrossRef
Veilleux, S., Cecil, G., & Bland-Hawthorn, J., 2005, ARA&A, 43, 769CrossRef
Westmoquette, M.S., Smith, L.J., Gallagher, J.S., & Exter, K.M., 2007, MNRAS, 381, 913CrossRef
Yeh, S.C.C., & Matzner, C.D., 2009, in preparation
Yeh, S.C.C., et al., 2009, in preparation