Luisi, Matteo ORCID: 0000-0001-8061-216X, Anderson, Loren D., Schneider, Nicola ORCID: 0000-0003-3485-6678, Simon, Robert ORCID: 0000-0003-2555-4408, Kabanovic, Slawa ORCID: 0000-0002-2207-9982, Gusten, Rolf, Zavagno, Annie ORCID: 0000-0001-9509-7316, Broos, Patrick S., Buchbender, Christof ORCID: 0000-0002-2064-7691, Guevara, Cristian ORCID: 0000-0003-3024-2548, Jacobs, Karl, Justen, Matthias, Klein, Bernd, Linville, Dylan, Rollig, Markus, Russeil, Delphine, Stutzki, Jurgen, Tiwari, Maitraiyee, Townsley, Leisa K. and Tielens, Alexander G. G. M. (2021). Stellar feedback and triggered star formation in the prototypical bubble RCW 120. Sci. Adv., 7 (15). WASHINGTON: AMER ASSOC ADVANCEMENT SCIENCE. ISSN 2375-2548

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Abstract

Radiative and mechanical feedback of massive stars regulates star formation and galaxy evolution. Positive feedback triggers the creation of new stars by collecting dense shells of gas, while negative feedback disrupts star formation by shredding molecular clouds. Although key to understanding star formation, their relative importance is unknown. Here, we report velocity-resolved observations from the SOFIA (Stratospheric Observatory for Infrared Astronomy) legacy program FEEDBACK of the massive star-forming region RCW 120 in the [CII] 1.9-THz fine-structure line, revealing a gas shell expanding at 15 km/s. Complementary APEX (Atacama Pathfinder Experiment) CO J = 3-2 345-GHz observations exhibit a ring structure of molecular gas, fragmented into clumps that are actively forming stars. Our observations demonstrate that triggered star formation can occur on much shorter time scales than hitherto thought (< 0.15 million years), suggesting that positive feedback operates on short time periods.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Luisi, MatteoUNSPECIFIEDorcid.org/0000-0001-8061-216XUNSPECIFIED
Anderson, Loren D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneider, NicolaUNSPECIFIEDorcid.org/0000-0003-3485-6678UNSPECIFIED
Simon, RobertUNSPECIFIEDorcid.org/0000-0003-2555-4408UNSPECIFIED
Kabanovic, SlawaUNSPECIFIEDorcid.org/0000-0002-2207-9982UNSPECIFIED
Gusten, RolfUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zavagno, AnnieUNSPECIFIEDorcid.org/0000-0001-9509-7316UNSPECIFIED
Broos, Patrick S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Buchbender, ChristofUNSPECIFIEDorcid.org/0000-0002-2064-7691UNSPECIFIED
Guevara, CristianUNSPECIFIEDorcid.org/0000-0003-3024-2548UNSPECIFIED
Jacobs, KarlUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Justen, MatthiasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klein, BerndUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Linville, DylanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rollig, MarkusUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Russeil, DelphineUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stutzki, JurgenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tiwari, MaitraiyeeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Townsley, Leisa K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tielens, Alexander G. G. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-600516
DOI: 10.1126/sciadv.abe9511
Journal or Publication Title: Sci. Adv.
Volume: 7
Number: 15
Date: 2021
Publisher: AMER ASSOC ADVANCEMENT SCIENCE
Place of Publication: WASHINGTON
ISSN: 2375-2548
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
H-II REGIONS; HII-REGIONS; SIMULATIONS; EMISSION; DYNAMICS; DUST; LINE; ASSOCIATIONS; METALLICITY; KINEMATICSMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60051

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