The 30 doradus molecular cloud at 0.4 pc resolution with the Atacama large millimeter/submillimeter array: physical properties and the boundedness of COemitting structures
Author
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Wong, Tony
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Oudshoorn, Luuk
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Sofovich, Eliyahu
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Green, Alex
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Shah, Charmi
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Indebetouw, Rémy
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Meixner, Margaret
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Hacar, Alvaro
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Nayak, Omnarayani
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Tokuda, Kazuki
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Bolatto, Alberto D.
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Chevance, Mélanie
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De Marchi, Guido
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Fukui, Yasuo
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Hirschauer, Alec S.
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Jameson, K. E.
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Kalari, Venu
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Lebouteiller, Vianney
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Looney, Leslie W.
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Madden, Suzanne C.
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Onishi, Toshikazu
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Román Duval, Julia
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Rubio López, Mónica Solange
Author
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Tielens, A. G. G. M.
Admission date
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2022-11-24T20:36:53Z
Available date
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2022-11-24T20:36:53Z
Publication date
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2022
Cita de ítem
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The Astrophysical Journal, 932:47 (19pp), 2022 June 10
es_ES
Identifier
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10.3847/1538-4357/ac723a
Identifier
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https://repositorio.uchile.cl/handle/2250/189368
Abstract
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We present results of a wide-field (approximately 60 x 90 pc) Atacama Large Millimeter/submillimeter Array mosaic of CO(2-1) and (CO)-C-13(2-1) emission from the molecular cloud associated with the 30 Doradus star-forming region in the Large Magellanic Cloud (LMC). Three main emission complexes, including two forming a bow-tie-shaped structure extending northeast and southwest from the central R136 cluster, are resolved into complex filamentary networks. Consistent with previous studies, we find that the central region of the cloud has higher line widths at a fixed size relative to the rest of the molecular cloud and to other LMC clouds, indicating an enhanced level of turbulent motions. However, there is no clear trend in gravitational boundedness (as measured by the virial parameter) with distance from R136. Structures observed in (CO)-C-13 are spatially coincident with filaments and are close to a state of virial equilibrium. In contrast, (CO)-C-12 structures vary greatly in virialization, with low CO surface brightness structures outside of the main filamentary network being predominantly unbound. The low surface brightness structures constitute similar to 10% of the measured CO luminosity; they may be shredded remnants of previously star-forming gas clumps, or alternatively the CO-emitting parts of more massive, CO-dark structures.
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Patrocinador
dc.description.sponsorship
National Science Foundation (NSF)
NSF - Directorate for Mathematical & Physical Sciences (MPS) 2009849
2009544
2009624
2108140
ANID (Chile) FONDECYT 1190684
ANID ACE210002
FB210003
NAOJ ALMA Scientific Research 2022-22B
Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)
Japan Society for the Promotion of Science JP21H00049
JP21K13962
European Research Council (ERC) 851435
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Lenguage
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en
es_ES
Publisher
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IOP
es_ES
Type of license
dc.rights
Attribution-NonCommercial-NoDerivs 3.0 United States
The 30 doradus molecular cloud at 0.4 pc resolution with the Atacama large millimeter/submillimeter array: physical properties and the boundedness of COemitting structures