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Author Stephens, Ian W. ♦ Dunham, Michael M. ♦ Myers, Philip C. ♦ Pokhrel, Riwaj ♦ Sadavoy, Sarah I. ♦ Lee, Katherine I. ♦ Goodman, Alyssa A. ♦ Vorobyov, Eduard I. ♦ Tobin, John J. ♦ Pineda, Jaime E. ♦ Offner, Stella S. R. ♦ Kristensen, Lars E. ♦ Jørgensen, Jes K. ♦ Bourke, Tyler L. ♦ Arce, Héctor G. ♦ Plunkett, Adele L.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ♦ ANGULAR MOMENTUM ♦ CARBON ♦ CARBON MONOXIDE ♦ COMPARATIVE EVALUATIONS ♦ COSMIC GASES ♦ DISTRIBUTION ♦ EVOLUTION ♦ FILAMENTS ♦ GALAXIES ♦ INTERSTELLAR SPACE ♦ MASS ♦ MULTIPLICITY ♦ OPACITY ♦ PROTOSTARS ♦ RANDOMNESS ♦ ROTATION ♦ STARS
Abstract We present new Submillimeter Array (SMA) observations of CO(2–1) outflows toward young, embedded protostars in the Perseus molecular cloud as part of the Mass Assembly of Stellar Systems and their Evolution with the SMA (MASSES) survey. For 57 Perseus protostars, we characterize the orientation of the outflow angles and compare them with the orientation of the local filaments as derived from Herschel observations. We find that the relative angles between outflows and filaments are inconsistent with purely parallel or purely perpendicular distributions. Instead, the observed distribution of outflow-filament angles are more consistent with either randomly aligned angles or a mix of projected parallel and perpendicular angles. A mix of parallel and perpendicular angles requires perpendicular alignment to be more common by a factor of ∼3. Our results show that the observed distributions probably hold regardless of the protostar’s multiplicity, age, or the host core’s opacity. These observations indicate that the angular momentum axis of a protostar may be independent of the large-scale structure. We discuss the significance of independent protostellar rotation axes in the general picture of filament-based star formation.
ISSN 0004637X
Educational Use Research
Learning Resource Type Article
Publisher Date 2017-09-01
Publisher Place United States
Journal Astrophysical Journal
Volume Number 846
Issue Number 1


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