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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 731502.0, MPI für Astronomie / Publikationen_mpia
Characterizing the youngest Herschel-detected protostars. II. Molecular outflows from the millimeter and the far-infrared
Authors:Tobin, J. J.; Stutz, A. M.; Manoj, P.; Megeath, S. T.; Karska, A.; Nagy, Z.; Wyrowski, F.; Fischer, W. J.; Watson, D. M.; Stanke, T.
Date of Publication (YYYY-MM-DD):2016
Title of Journal:The Astrophysical Journal
Issue / Number:1
Start Page:id. 36 (29 pp)
Audience:Not Specified
Abstract / Description:We present Combined Array for Research in Millimeter-wave Astronomy (CARMA) CO (J=1\to 0) observations and Herschel PACS spectroscopy, characterizing the outflow properties toward extremely young and deeply embedded protostars in the Orion molecular clouds. The sample comprises a subset of the Orion protostars known as the PACS Bright Red Sources (PBRS; Stutz et al.). We observed 14 PBRS with CARMA and 8 of these 14 with Herschel, acquiring full spectral scans from 55 to 200 μm. Outflows are detected in CO (J=1\to 0) from 8 of 14 PBRS, with two additional tentative detections; outflows are also detected from the outbursting protostar HOPS 223 (V2775 Ori) and the Class I protostar HOPS 68. The outflows have a range of morphologies; some are spatially compact, <10,000 au in extent, while others extend beyond the primary beam. The outflow velocities and morphologies are consistent with being dominated by intermediate inclination angles (80° ≥ i ≥ 20°). This confirms the interpretation of the very red 24–70 μm colors of the PBRS as a signpost of high envelope densities, with only one (possibly two) cases of the red colors resulting from edge-on inclinations. We detect high-J (J up > 13) CO lines and/or H2O lines from 5 of 8 PBRS and only for those with detected
Free Keywords:ISM: jets and outflows; ISM: molecules; methods: observational; stars: formation; stars: protostars; techniques: interferometric
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-637X %R 10.3847/0004-637X/831/1/36
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