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Outflows from Super...
Outflows from Super Star Clusters in the Central Starburst of NGC 253
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- Levy, Rebecca C. (author)
- University of Maryland
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- Bolatto, Alberto D. (author)
- University of Maryland
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- Leroy, Adam K. (author)
- Ohio State University
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- Emig, Kimberly L. (author)
- Universiteit Leiden (UL),Leiden University (UL),National Radio Astronomy Observatory
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- Gorski, Mark, 1989 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Krieger, Nico (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Lenkic, Laura (author)
- University of Maryland
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- Meier, David S. (author)
- National Radio Astronomy Observatory Socorro,New Mexico Institute of Mining and Technology
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- Mills, Elisabeth A. C. (author)
- University of Kansas
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- Ott, Juergen (author)
- National Radio Astronomy Observatory Socorro
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- Rosolowsky, Erik (author)
- University of Alberta
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- Tarantino, Elizabeth (author)
- University of Maryland
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- Veilleux, Sylvain (author)
- University of Maryland
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- Walter, Fabian (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),National Radio Astronomy Observatory Socorro
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- Weiss, Axel (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Zwaan, Martin A. (author)
- European Southern Observatory Santiago
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(creator_code:org_t)
- 2021-04-29
- 2021
- English.
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In: Astrophysical Journal. - : American Astronomical Society. - 1538-4357 .- 0004-637X. ; 912:1
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Abstract
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- Young massive clusters play an important role in the evolution of their host galaxies, and feedback from the high-mass stars in these clusters can have profound effects on the surrounding interstellar medium. The nuclear starburst in the nearby galaxy NGC 253 at a distance of 3.5 Mpc is a key laboratory in which to study star formation in an extreme environment. Previous high-resolution (1.9 pc) dust continuum observations from the Atacama Large Millimeter/submillimeter Array (ALMA) discovered 14 compact, massive super star clusters (SSCs) still in formation. We present here ALMA data at 350 GHz with 28 mas (0.5 pc) resolution. We detect blueshifted absorption and redshifted emission (P-Cygni profiles) toward three of these SSCs in multiple lines, including CS 7-6 and (HCN)-C-13 4-3, which represent direct evidence for previously unobserved outflows. The mass contained in these outflows is a significant fraction of the cluster gas masses, which suggests we are witnessing a short but important phase. Further evidence of this is the finding of a molecular shell around the only SSC visible at near-IR wavelengths. We model the P-Cygni line profiles to constrain the outflow geometry, finding that the outflows must be nearly spherical. Through a comparison of the outflow properties with predictions from simulations, we find that none of the available mechanisms completely explains the observations, although dust-reprocessed radiation pressure and O star stellar winds are the most likely candidates. The observed outflows will have a very substantial effect on the clusters' evolution and star formation efficiency.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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- By the author/editor
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Levy, Rebecca C.
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Bolatto, Alberto ...
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Leroy, Adam K.
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Emig, Kimberly L ...
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Gorski, Mark, 19 ...
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Krieger, Nico
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show more...
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Lenkic, Laura
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Meier, David S.
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Mills, Elisabeth ...
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Ott, Juergen
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Rosolowsky, Erik
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Tarantino, Eliza ...
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Veilleux, Sylvai ...
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Walter, Fabian
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Weiss, Axel
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Zwaan, Martin A.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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Astrophysical Jo ...
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Chalmers University of Technology