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Protostellar Outflows in L1340

Walawender, Josh and Wolf-Chase, Grace and Smutko, Michael and O'Linger-Luscusk, JoAnn and Moriarty-Schieven, Gerald (2016) Protostellar Outflows in L1340. Astrophysical Journal, 832 (2). Art. No. 184. ISSN 1538-4357.

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We have searched the L1340 A, B, and C clouds for shocks from protostellar outflows using the H_2 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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Additional Information:© 2016. The American Astronomical Society. Received 2016 April 21; revised 2016 September 23; accepted 2016 September 28; published 2016 November 30. 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 Wide-field 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. The MHO catalog is hosted by Liverpool John Moores University. This research made use of Astropy, a community-developed core Python package for astronomy (Collaboration et al. 2013). GW-C gratefully acknowledges support from the Brinson Foundation in aid of astrophysics research at the Adler Planetarium. We would like to thank Adam Draginda, Rachael Zelman, and Mary Laychak (the CFHT queue observers), as well as Pierre Martin, Daniel Devost, and Todd Burdullis (the CFHT queue coordinators), who obtained our WIRCam data. Finally, we would like to thank the University of Hawaii Time Allocation Committee for allocating the nights during which these observations were made. The authors also wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are fortunate to have the opportunity to conduct observations from this sacred mountain. Facilities: CFHT (WIRCAM) - , ARC (NICFPS) - , WISE. -
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Brinson FoundationUNSPECIFIED
Subject Keywords:Herbig–Haro objects; ISM: jets and outflows; stars: formation; stars: jets; stars: pre-main sequence; stars: protostars
Issue or Number:2
Record Number:CaltechAUTHORS:20161130-144931382
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Official Citation:Josh Walawender et al 2016 ApJ 832 184
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72467
Deposited By: George Porter
Deposited On:30 Nov 2016 23:24
Last Modified:03 Oct 2019 16:18

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