Misaligned Rotations of the Envelope, Outflow, and Disks in the Multiple Protostellar System of VLA 1623-2417: FAUST. III

dc.contributor.authorOhashi, Satoshi
dc.contributor.authorCodella, Claudio
dc.contributor.authorSakai, Nami
dc.contributor.authorChandler, Claire.J.
dc.contributor.authorCeccarelli, Cecilia
dc.contributor.authorAlves, Felipe O.
dc.contributor.authorFedele, Davide
dc.contributor.authorHanawa, Tomoyuki
dc.contributor.authorDurán, Aurora
dc.contributor.authorFavre, Cécile
dc.contributor.authorLópez Sepulcre, Ana
dc.contributor.authorLoinard, Laurent
dc.contributor.authorMercimek, Seyma
dc.contributor.authorMurillo, Nadia M.
dc.contributor.authorPodio, Linda
dc.contributor.authorZhang, Yichen
dc.contributor.authorAikawa, Yuri
dc.contributor.authorBalucani, Nadia
dc.contributor.authorBianchi, Eleonora
dc.contributor.authorBouvier, Mathilde
dc.contributor.authorBusquet Rico, Gemma
dc.contributor.authorCaselli, Paola
dc.contributor.authorCaux, Emmanuel
dc.contributor.authorCharnley, Steven
dc.contributor.authorChoudhury, Spandan
dc.contributor.authorCuello, Nicolás
dc.contributor.authorDe Simone, Marta
dc.contributor.authorDulieu, François
dc.contributor.authorothers
dc.date.accessioned2022-09-19T16:14:19Z
dc.date.available2022-09-19T16:14:19Z
dc.date.issued2022-03
dc.date.updated2022-09-19T16:14:19Z
dc.description.abstractWe report a study of the low-mass Class-0 multiple system VLA 1623AB in the Ophiuchus star-forming region, using H13CO+ (J=3−2), CS (J=5−4), and CCH (N=3−2) lines as part of the ALMA Large Program FAUST. The analysis of the velocity fields revealed the rotation motion in the envelope and the velocity gradients in the outflows (about 2000 au down to 50 au). We further investigated the rotation of the circum-binary VLA 1623A disk as well as the VLA 1623B disk. We found that the minor axis of the circum-binary disk of VLA 1623A is misaligned by about 12 degrees with respect to the large-scale outflow and the rotation axis of the envelope. In contrast, the minor axis of the circum-binary disk is parallel to the large-scale magnetic field according to previous dust polarization observations, suggesting that the misalignment may be caused by the different directions of the envelope rotation and the magnetic field. If the velocity gradient of the outflow is caused by rotation, the outflow has a constant angular momentum and the launching radius is estimated to be 5−16 au, although it cannot be ruled out that the velocity gradient is driven by entrainments of the two high-velocity outflows. Furthermore, we detected for the first time a velocity gradient associated with rotation toward the VLA 16293B disk. The velocity gradient is opposite to the one from the large-scale envelope, outflow, and circum-binary disk. The origin of its opposite gradient is also discussed.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec722594
dc.identifier.issn0004-637X
dc.identifier.urihttps://hdl.handle.net/2445/189129
dc.language.isoeng
dc.publisherInstitute of Physics (IOP)
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.3847/1538-4357/ac4cae
dc.relation.ispartofAstrophysical Journal, 2022, vol. 927, num. 1
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/896319/EU//SANDS
dc.relation.urihttps://doi.org/10.3847/1538-4357/ac4cae
dc.rights(c) American Astronomical Society, 2022
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)
dc.subject.classificationFormació d'estels
dc.subject.classificationMatèria interstel·lar
dc.subject.classificationMolècules
dc.subject.otherStar formation
dc.subject.otherInterstellar matter
dc.subject.otherMolecules
dc.titleMisaligned Rotations of the Envelope, Outflow, and Disks in the Multiple Protostellar System of VLA 1623-2417: FAUST. III
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

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