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Outflows and Bubbles in Taurus: Star-formation Feedback Sufficient to Maintain Turbulence

Li, Huixian and Li, Di and Qian, Lei and Xu, Duo and Goldsmith, Paul F. and Noriega-Crespo, Alberto and Wu, Yuefang and Song, Yuzhe and Nan, Rendong (2015) Outflows and Bubbles in Taurus: Star-formation Feedback Sufficient to Maintain Turbulence. Astrophysical Journal Supplement Series, 219 (2). Art. No. 20. ISSN 0067-0049. https://resolver.caltech.edu/CaltechAUTHORS:20151019-113330034

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Abstract

We have identified outflows and bubbles in the Taurus molecular cloud based on the ~100 deg^2 Five College Radio Astronomy Observatory ^(12)CO(1-0) and ^(13)CO(1-0) maps and the Spitzer young stellar object catalogs. In the main 44 deg^2 area of Taurus, we found 55 outflows, of which 31 were previously unknown. We also found 37 bubbles in the entire 100 deg^2 area of Taurus, none of which had been found previously. The total kinetic energy of the identified outflows is estimated to be ~3.9 x 10^(45) erg, which is 1% of the cloud turbulent energy. The total kinetic energy of the detected bubbles is estimated to be ~9.2 x 10^(46) erg, which is 29% of the turbulent energy of Taurus. The energy injection rate from the outflows is ~1.3 x 10^(33) erg s^(-1), which is 0.4–2 times the dissipation rate of the cloud turbulence. The energy injection rate from bubbles is ~6.4 x 10^(33) erg s^(−1), which is 2–10 times the turbulent dissipation rate of the cloud. The gravitational binding energy of the cloud is ~1.5 x 10^(48) erg, that is, 385 and 16 times the energy of outflows and bubbles, respectively. We conclude that neither outflows nor bubbles can provide sufficient energy to balance the overall gravitational binding energy and the turbulent energy of Taurus. However, in the current epoch, stellar feedback is sufficient to maintain the observed turbulence in Taurus.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0067-0049/219/2/20 DOIArticle
http://iopscience.iop.org/article/10.1088/0067-0049/219/2/20/metaPublisherArticle
http://arxiv.org/abs/1507.06512arXivDiscussion Paper
ORCID:
AuthorORCID
Goldsmith, Paul F.0000-0002-6622-8396
Noriega-Crespo, Alberto0000-0002-6296-8960
Additional Information:© 2015 The American Astronomical Society. Received 2015 February 10; accepted 2015 May 11; published 2015 August 4. We are grateful to Dr. Y. L. Yue, Dr. Z. Y. Zhang, Dr. T. Liu, Dr. X. Y. Gao, and Dr. Z. Y. Ren for their kind and valuable advice and support. We thank the anonymous referee for a careful inspection of the manuscript and constructive comments, particularly the important suggestion to examine the turbulent dissipation issue in order to improve the quality of this study. We also thank Prof. W. Butler Burton for help in the review process. This work is partly supported by the China Ministry of Science and Technology under State Key Development Program for Basic Research (2012CB821802), and the National Natural Science Foundation of China (11373038, 11373045), the Hundred Talents Program of the Chinese Academy of Sciences, and the Young Researcher Grant of National Astronomical Observatories, Chinese Academy of Sciences.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
China Ministry of Science and Technology2012CB821802
National Natural Science Foundation of China11373038
National Natural Science Foundation of China11373045
Chinese Academy of SciencesUNSPECIFIED
National Astronomical Observatories, Chinese Academy of Sciences (NAOC)UNSPECIFIED
Subject Keywords:ISM: bubbles – ISM: individual objects (Taurus) – ISM: jets and outflows – ISM: kinematics and dynamics – surveys – turbulence
Issue or Number:2
Record Number:CaltechAUTHORS:20151019-113330034
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151019-113330034
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61259
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:19 Oct 2015 19:29
Last Modified:09 Mar 2020 13:19

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