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http://hdl.handle.net/20.500.12386/27815
Titolo: | Zooming in to Massive Star Birth | Autori: | Kong, Shuo Tan, Jonathan C. Caselli, Paola FONTANI, FRANCESCO Wang, Ke Butler, Michael J. |
Data pubblicazione: | 2018 | Rivista: | THE ASTROPHYSICAL JOURNAL | Numero: | 867 | Fascicolo: | 2 | Da pagina:: | 94 | Abstract: | We present high-resolution (0.″2, 1000 au) 1.3 mm ALMA observations of the massive infrared dark cloud clump, G028.37+00.07-C1, thought to harbor the early stages of massive star formation. Using {{{N}}}<SUB>2</SUB>{{{D}}}<SUP>+</SUP>(3-2), we resolve the previously identified C1-S core, separating the bulk of its emission from two nearby protostellar sources. C1-S is thus identified as a massive (∼50 M <SUB>☉</SUB>), compact (∼0.1 pc diameter) starless core, e.g., with no signs of outflow activity. Being highly deuterated, this is a promising candidate for a pre-stellar core on the verge of collapse. An analysis of its dynamical state indicates a sub-virial velocity dispersion compared to a trans-Alfvénic turbulent core model. However, virial equilibrium could be achieved with sub-Alfvénic conditions involving magnetic field strengths of ∼2 mG. | URI: | http://hdl.handle.net/20.500.12386/27815 | URL: | https://iopscience.iop.org/article/10.3847/1538-4357/aae1b2 | ISSN: | 0004-637X | DOI: | 10.3847/1538-4357/aae1b2 | Bibcode ADS: | 2018ApJ...867...94K | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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