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http://hdl.handle.net/20.500.12386/27366
Titolo: | ALMA discovery of a rotating SO/SO2 flow in HH212. A possible MHD disk wind? | Autori: | Tabone, B. Cabrit, S. Bianchi, E. Ferreira, J. Pineau des Forêts, G. CODELLA, CLAUDIO Gusdorf, A. Gueth, F. PODIO, LINDA Chapillon, E. |
Data pubblicazione: | 2017 | Rivista: | ASTRONOMY & ASTROPHYSICS | Numero: | 607 | Da pagina:: | L6 | Abstract: | We wish to constrain the possible contribution of a magnetohydrodynamic disk wind (DW) to the HH212 molecular jet. We mapped the flow base with ALMA Cycle 4 at 0.̋13 60 au resolution and compared these observations with synthetic DW predictions. We identified, in SO/SO<SUB>2</SUB>, a rotating flow that is wider and slower than the axial SiO jet. The broad outflow cavity seen in C<SUP>34</SUP>S is not carved by a fast wide-angle wind but by this slower agent. Rotation signatures may be fitted by a DW of a moderate lever arm launched out to 40 au with SiO tracing dust-free streamlines from 0.05-0.3 au. Such a DW could limit the core-to-star efficiency to ≤50%. | URI: | http://hdl.handle.net/20.500.12386/27366 | URL: | https://www.aanda.org/articles/aa/abs/2017/11/aa31691-17/aa31691-17.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201731691 | Bibcode ADS: | 2017A&A...607L...6T | Fulltext: | open |
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