Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101778
Title: The Green Bank Ammonia Survey: A Virial Analysis of Gould Belt Clouds in Data Release 1
Authors: Kerr, R.
Kirk, H.
Di, Francesco, J.
Keown, J.
Chen, M.
Rosolowsky, E.
Offner, S. S. R.
Friesen, R.
Pineda, J. E.
Shirley, Y.
Redaelli, E.
Caselli, P.
Punanova, A.
Seo, Y.
Alves, F.
Chacón-Tanarro, A.
How-Huan Chen, H.
Issue Date: 2019
Publisher: Institute of Physics Publishing
Citation: Kerr R. The Green Bank Ammonia Survey: A Virial Analysis of Gould Belt Clouds in Data Release 1 / R. Kerr, H. Kirk, J. Di Francesco. — DOI 10.3847/1538-4357/ab0c08 // Astrophysical Journal. — 2019. — Vol. 874. — Iss. 2. — 147.
Abstract: We perform a virial analysis of starless dense cores in three nearby star-forming regions: L1688 in Ophiuchus, NGC 1333 in Perseus, and B18 in Taurus. Our analysis takes advantage of comprehensive kinematic information for the dense gas in all of these regions made publicly available through the Green Bank Ammonia Survey Data Release 1, which is used to estimate internal support against collapse. We combine this information with ancillary data used to estimate other important properties of the cores, including continuum data from the James Clerk Maxwell Telescope Gould Belt Survey for core identification, core masses, and core sizes. Additionally, we used Planck- and Herschel-based column density maps for external cloud weight pressure and Five College Radio Astronomy Observatory 13 CO observations for external turbulent pressure. Our self-consistent analysis suggests that many dense cores in all three star-forming regions are not bound by gravity alone, but rather require additional pressure confinement to remain bound. Unlike a recent, similar study in Orion A, we find that turbulent pressure represents a significant portion of the external pressure budget. Our broad conclusion emphasizing the importance of pressure confinement in dense core evolution, however, agrees with earlier work. © 2019. The American Astronomical Society. All rights reserved.
Keywords: ISM: KINEMATICS AND DYNAMICS
STARS: FORMATION
URI: http://hdl.handle.net/10995/101778
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85064461922
PURE ID: 9311865
16e35579-db23-4aef-9ec6-fb513dc0a65e
ISSN: 0004637X
DOI: 10.3847/1538-4357/ab0c08
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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