Why Are (Almost) All the Protostellar Outflows Aligned in Serpens Main?

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dc.citation.articleNumber5en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitleThe Astrophysical Journalen_US
dc.citation.volumeNumber972en_US
dc.contributor.authorGreen, Joel D.en_US
dc.contributor.authorPontoppidan, Klaus M.en_US
dc.contributor.authorReiter, Meganen_US
dc.contributor.authorWatson, Dan M.en_US
dc.contributor.authorShenoy, Sachindev S.en_US
dc.contributor.authorManoj, P.en_US
dc.contributor.authorNarang, Mayanken_US
dc.date.accessioned2024-11-04T16:25:09Zen_US
dc.date.available2024-11-04T16:25:09Zen_US
dc.date.issued2024en_US
dc.description.abstractWe present deep 1.4–4.8 μm JWST-NIRCam imaging of the Serpens Main star-forming region and identify 20 candidate protostellar outflows, most with bipolar structure and identified driving sources. The outflow position angles (PAs) are strongly correlated, and they are aligned within ±24° of the major axis of the Serpens filament. These orientations are further aligned with the angular momentum vectors of the two disk shadows in this region. We estimate that the probability of this number of young stars being coaligned if sampled from a uniform PA distribution is 10−4. This in turn suggests that the aligned protostars, which seem to be at similar evolutionary stages based on their outflow dynamics, formed at similar times with a similar spin inherited from a local cloud filament. Further, there is tentative evidence for a systematic change in average PA between the northwestern and southeastern cluster, as well as increased scatter in the PAs of the southeastern protostars. SOFIA-HAWC+ archival dust polarization observations of Serpens Main at 154 and 214 μm are perpendicular to the dominant jet orientation in the northwestern region in particular. We measure and locate shock knots and edges for all of the outflows and provide an identifying catalog. We suggest that Serpens main is a cluster that formed from an isolated filament and due to its youth retains its primordial outflow alignment.en_US
dc.identifier.citationGreen, J. D., Pontoppidan, K. M., Reiter, M., Watson, D. M., Shenoy, S. S., Manoj, P., & Narang, M. (2024). Why Are (Almost) All the Protostellar Outflows Aligned in Serpens Main? The Astrophysical Journal, 972(1), 5. https://doi.org/10.3847/1538-4357/ad5a02en_US
dc.identifier.digitalGreen_2024_ApJ_972_5en_US
dc.identifier.doihttps://doi.org/10.3847/1538-4357/ad5a02en_US
dc.identifier.urihttps://hdl.handle.net/1911/117977en_US
dc.language.isoengen_US
dc.publisherIOP Publishingen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleWhy Are (Almost) All the Protostellar Outflows Aligned in Serpens Main?en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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