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Molecules in Starburst and Active Galaxy Nuclei

Scoville, N. (1994) Molecules in Starburst and Active Galaxy Nuclei. In: The Nuclei of Normal Galaxies: Lessons from the Galactic Center. NATO ASI Series. No.445. Springer , Dordrecht, pp. 117-126. ISBN 978-94-010-4323-6. https://resolver.caltech.edu/CaltechAUTHORS:20200512-140754110

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Abstract

Molecular line surveys of luminous infrared bright galaxies sampled by the IRAS survey have shown these galaxies to be extraordinarily rich in molecular gas. Optical imaging of the most luminous IRAS galaxies suggest that many have recently undergone a strong galactic interaction or merger. High resolution aperture synthesis CO data in the systems reveal massive concentrations of molecules (10⁸ – 10¹⁰ M⊙) ususally in the galactic nuclei. The dense molecular gas is much more highly concentrated than in normal galaxies, probably a result of the viscous dissipation of energy and angular momentum in the ISM as a result of the strong dynamical perturbations. These nuclear gas concentrations are the source of nuclear starbursts, possibly also rejuvinating nuclear nonthermal activity. Interaction induced activity in the interstellar gas of galaxies may play a fundamental role in galactic evolution — leading to star formation rates elevated by at least an order of magnitude for a period ~ 2 × 10⁸ years. Since such activity is presently occurring in approximately 2% of all spiral galaxies, it is clear that galactic interactions can be critical to both the long term stellar populations of galaxies and to the most luminous, energetic phases for galactic evolution.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1007/978-94-011-0752-5_15DOIArticle
ORCID:
AuthorORCID
Scoville, N.0000-0002-0438-3323
Additional Information:© 1994 Springer Science+Business Media Dordrecht. This research was supported in part by NSF grant AST 90-16404. It is a pleasure to thank Alicia Rodriguez for the preparation of this manuscript.
Funders:
Funding AgencyGrant Number
NSFAST 90-16404
Subject Keywords:Spiral Galaxy; Star Formation Rate; Normal Galaxy; Galactic Evolution; Dust Lane
Series Name:NATO ASI Series
Issue or Number:445
Record Number:CaltechAUTHORS:20200512-140754110
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200512-140754110
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103151
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:12 May 2020 21:18
Last Modified:12 May 2020 21:18

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