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Radiatively Cooling Superwinds in Ultracompact Hii Regions

Published online by Cambridge University Press:  09 June 2023

A. Danehkar Open the ORCID record for A. Danehkar [Opens in a new window]
A. Danehkar*
Affiliation:
Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017, USA email:danehkar@eurekasci.com
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Abstract

Ultracompact Hii regions (UC-HII) are the young, very dense cores of massive star-forming regions in dwarf galaxies, where newly formed massive OB stars are surrounded by natal molecular clouds. Thermal energy deposited by mechanical feedback from a cluster of massive OB stars can form a superwind, which may lead to a wind-blown bubble as well as radiative cooling. We investigate the formation of radiatively cooling superwinds in UC-HII using a radiative cooling module in the hydrodynamics program. We built a grid of hydrodynamic simulations to determine the dependence of radiative cooling on the cluster radius, mass-deposition rate, wind velocity, and ambient medium in UC-HII. Our findings could help to better understand star formation in massive star-forming regions, where cool superwinds could trigger the formation of molecular clumpy regions.

Keywords

Stars: windsISM: bubblesradiation mechanismsgalaxies: starburst
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S373: Resolving the Rise and Fall of Star Formation in Galaxies , August 2021 , pp. 25 - 27
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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References

Churchwell, E., 2002, ARA&A, 40, 27 Google Scholar
Danehkar, A., Oey, M. S., Gray, W. J., 2021, ApJ, 921, 91 10.3847/1538-4357/ac1a76CrossRefGoogle Scholar
Danehkar, A., Oey, M. S., Gray, W. J., 2022, ApJ, 937, 68 10.3847/1538-4357/ac8cecCrossRefGoogle Scholar
De Pree, C. G., Wilner, D. J., Goss, W. M., Welch, W. J., McGrath, E., 2000, ApJ, 540, 308 10.1086/309315CrossRefGoogle Scholar
Fabian, A. C., Nulsen, P. E. J., Canizares, C. R., 1984, Nature, 310, 733 10.1038/310733a0CrossRefGoogle Scholar
Ferland, G. J. et al., 2017, RMxAA, 53, 385 Google Scholar
Fryxell, B. et al., 2000, ApJS, 131, 273 10.1086/317361CrossRefGoogle Scholar
Gray, W. J., Oey, M. S., Silich, S., Scannapieco, E., 2019 a, ApJ, 887, 161 Google Scholar
Gray, W. J., Scannapieco, E., Lehnert, M. D., 2019b, ApJ, 875, 11010.3847/1538-4357/ab1004CrossRefGoogle Scholar
Grimes, J. P. et al., 2007, ApJ, 668, 891 10.1086/521353CrossRefGoogle Scholar
Heckman, T. M., Armus, L., Miley, G. K., 1990, ApJS, 74, 833 10.1086/191522CrossRefGoogle Scholar
Hoare, M. G., Kurtz, S. E., Lizano, S., Keto, E., Hofner, P., 2007, in Protostars and Planets V, Reipurth B., Jewitt D., Keil K., eds., Tucson: University of Arizona Press, p. 181Google Scholar
Krause, M. G. H., Charbonnel, C., Bastian, N., Diehl, R., 2016, A&A, 587, A53 Google Scholar
Lehnert, M. D., Heckman, T. M., 1995, ApJS, 97, 89 10.1086/192137CrossRefGoogle Scholar
Leitherer, C. et al., 1999, ApJS, 123, 3 10.1086/313233CrossRefGoogle Scholar
Martin, C. L., 1999, ApJ, 513, 156 10.1086/306863CrossRefGoogle Scholar
Oey, M. S., Herrera, C. N., Silich, S., Reiter, M., James, B. L., et al., 2017, ApJ, 849, L1 10.3847/2041-8213/aa9215CrossRefGoogle Scholar
Olivier, G. M., Lopez, L. A., Rosen, A. L., Nayak, O., Reiter, M., et al., 2021, ApJ, 908, 68 10.3847/1538-4357/abd24aCrossRefGoogle Scholar
Ott, J., Walter, F., Brinks, E., 2005, MNRAS, 358, 1453 10.1111/j.1365-2966.2005.08863.xCrossRefGoogle Scholar
Silich, S., Tenorio-Tagle, G., Rodrguez-González, A., 2004, ApJ, 610, 226 10.1086/421702CrossRefGoogle Scholar
Strickland, D. K., Ponman, T. J., Stevens, I. R., 1997, A&A, 320, 378 Google Scholar
Tenorio-Tagle, G., Silich, S., Rodrguez-González, A., Muñoz-Tuñón, C., 2005, ApJ, 620, 217 10.1086/426962CrossRefGoogle Scholar
Tsujimoto, M., Hosokawa, T., Feigelson, E. D., Getman, K. V., Broos, P. S., 2006, ApJ, 653, 409 10.1086/507439CrossRefGoogle Scholar
Turner, J. L., Consiglio, S. M., Beck, S. C., Goss, W. M., et al., 2017, ApJ, 846, 73 10.3847/1538-4357/aa8669CrossRefGoogle Scholar
Veilleux, S., Cecil, G., Bland-Hawthorn, J., 2005, ARA&A, 43, 769 Google Scholar
Weaver, R., McCray, R., Castor, J., Shapiro, P., Moore, R., 1977, ApJ, 218, 377 10.1086/155692CrossRefGoogle Scholar
Wood, D. O. S., Churchwell, E., 1989, ApJ, 340, 26510.1086/167390CrossRefGoogle Scholar