Multi-scale view of star formation in IRAS 21078+5211: from clump fragmentation to disk wind
In: Astronomy & Astrophysics, Jg. 647 (2021-03-01), S. A114
Online
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Zugriff:
In the massive star-forming region IRAS 21078+5211, a highly fragmented cluster (0.1~pc in size) of molecular cores is observed, located at the density peak of an elongated (1~pc in size) molecular cloud. A small (1~km/s per 0.1~pc) LSR velocity (Vlsr) gradient is detected across the axis of the molecular cloud. Assuming we are observing a mass flow from the harboring cloud to the cluster, we derive a mass infall rate of about 10^{-4}~M_{sun}~yr^{-1}. The most massive cores (labeled 1, 2, and 3) are found at the center of the cluster, and these are the only ones that present a signature of protostellar activity in terms of emission from high-excitation molecular lines or a molecular outflow. We reveal an extended (size about 0.1~pc), bipolar collimated molecular outflow emerging from core 1. We believe this is powered by a (previously discovered) compact (size
25 pages, 16 figures
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Multi-scale view of star formation in IRAS 21078+5211: from clump fragmentation to disk wind
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Autor/in / Beteiligte Person: | Henning, Thomas ; Cesaroni, R. ; Sanna, A. ; Sánchez-Monge, Álvaro ; Palau, A. ; Maud, Luke T. ; Csengeri, Timea ; Leurini, Silvia ; Beuther, Henrik ; Longmore, Steven N. ; Ahmadi, A. ; Galván-Madrid, Roberto ; Kuiper, Rolf ; Möller, T. ; Massi, Fabrizio ; Gieser, C. ; Zinnecker, Hans ; Moscadelli, Luca ; Pudritz, R. ; Winters, J. M. ; Semenov, D. ; Klaassen, Pamela ; Peters, T. ; Bacciotti, Francesca ; Urquhart, James ; Beltrán, Maria T. ; ITA ; GBR ; DEU ; ESP ; CAN ; MEX ; 2021, FEMIS ; Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB) ; Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
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Zeitschrift: | Astronomy & Astrophysics, Jg. 647 (2021-03-01), S. A114 |
Veröffentlichung: | EDP Sciences, 2021 |
Medientyp: | unknown |
ISSN: | 1432-0746 (print) ; 0004-6361 (print) |
DOI: | 10.1051/0004-6361/202039837 |
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