PROTOSTELLAR OUTFLOWS in L1340

Josh Walawender; Grace Wolf-Chase; Michael Smutko; Joann Olinger-Luscusk; Gerald Moriarty-Schieven

doi:10.3847/0004-637X/832/2/184

PROTOSTELLAR OUTFLOWS in L1340

Josh Walawender, Grace Wolf-Chase, Michael Smutko, Joann Olinger-Luscusk, Gerald Moriarty-Schieven

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We have searched the L1340 A, B, and C clouds for shocks from protostellar outflows using the H₂ 2.122 μm near-infrared line as a shock tracer. Substantial outflow activity has been found in each of the three regions of the cloud (L1340 A, L1340 B, and L1340 C). We find 42 distinct shock complexes (16 in L1340 A, 11 in L1340 B, and 15 in L1340 C). We were able to link 17 of those shock complexes into 12 distinct outflows and identify candidate source stars for each. We examine the properties (A _V, T _bol, and L _bol) of the source protostars and compare them to the properties of the general population of Class 0/I and flat spectral energy distribution protostars and find that there is an indication, albeit at low statistical significance, that the outflow-driving protostars are drawn from a population with lower A _V, higher L _bol, and lower T _bol than the general population of protostars.

Original language	English (US)
Article number	184
Journal	Astrophysical Journal
Volume	832
Issue number	2
DOIs	https://doi.org/10.3847/0004-637X/832/2/184
State	Published - Dec 1 2016

Funding

This work is based on observations obtained with WIRCam, a joint project of CFHT, Taiwan, Korea, Canada, and France, at the Canada-France-Hawaii Telescope (CFHT) which is operated by the National Research Council (NRC) of Canada, the Institute National des Sciences de l'Univers of the Centre National de la Recherche Scientifique of France, and the University of Hawaii. This work is based on observations obtained with the Apache Point Observatory 3.5 m telescope, which is owned and operated by the Astrophysical Research Consortium. This publication makes use of data products from the Widefield Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. This research has made use of the VizieR catalog access tool, CDS, Strasbourg, France.

Keywords

HerbigHaro objects
ISM: jets and outflows
stars: formation
stars: jets
stars: pre-main sequence
stars: protostars

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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title = "PROTOSTELLAR OUTFLOWS in L1340",

abstract = "We have searched the L1340 A, B, and C clouds for shocks from protostellar outflows using the H2 2.122 μm near-infrared line as a shock tracer. Substantial outflow activity has been found in each of the three regions of the cloud (L1340 A, L1340 B, and L1340 C). We find 42 distinct shock complexes (16 in L1340 A, 11 in L1340 B, and 15 in L1340 C). We were able to link 17 of those shock complexes into 12 distinct outflows and identify candidate source stars for each. We examine the properties (A V, T bol, and L bol) of the source protostars and compare them to the properties of the general population of Class 0/I and flat spectral energy distribution protostars and find that there is an indication, albeit at low statistical significance, that the outflow-driving protostars are drawn from a population with lower A V, higher L bol, and lower T bol than the general population of protostars.",

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AU - Wolf-Chase, Grace

AU - Smutko, Michael

AU - Olinger-Luscusk, Joann

AU - Moriarty-Schieven, Gerald

PY - 2016/12/1

Y1 - 2016/12/1

N2 - We have searched the L1340 A, B, and C clouds for shocks from protostellar outflows using the H2 2.122 μm near-infrared line as a shock tracer. Substantial outflow activity has been found in each of the three regions of the cloud (L1340 A, L1340 B, and L1340 C). We find 42 distinct shock complexes (16 in L1340 A, 11 in L1340 B, and 15 in L1340 C). We were able to link 17 of those shock complexes into 12 distinct outflows and identify candidate source stars for each. We examine the properties (A V, T bol, and L bol) of the source protostars and compare them to the properties of the general population of Class 0/I and flat spectral energy distribution protostars and find that there is an indication, albeit at low statistical significance, that the outflow-driving protostars are drawn from a population with lower A V, higher L bol, and lower T bol than the general population of protostars.

AB - We have searched the L1340 A, B, and C clouds for shocks from protostellar outflows using the H2 2.122 μm near-infrared line as a shock tracer. Substantial outflow activity has been found in each of the three regions of the cloud (L1340 A, L1340 B, and L1340 C). We find 42 distinct shock complexes (16 in L1340 A, 11 in L1340 B, and 15 in L1340 C). We were able to link 17 of those shock complexes into 12 distinct outflows and identify candidate source stars for each. We examine the properties (A V, T bol, and L bol) of the source protostars and compare them to the properties of the general population of Class 0/I and flat spectral energy distribution protostars and find that there is an indication, albeit at low statistical significance, that the outflow-driving protostars are drawn from a population with lower A V, higher L bol, and lower T bol than the general population of protostars.

KW - HerbigHaro objects

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KW - stars: jets

KW - stars: pre-main sequence

KW - stars: protostars

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PROTOSTELLAR OUTFLOWS in L1340

Abstract

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Keywords

ASJC Scopus subject areas

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