Das, Mousumi and Teuben, Peter J. and Vogel, Stuart N. and Regan, Michael W. and Sheth, Kartik and Harris, Andrew I. and Jefferys, William H. (2003) Central Mass Concentration and Bar Dissolution in Nearby Spiral Galaxies. Astrophysical Journal, 582 (1). pp. 190-195. ISSN 0004-637X. doi:10.1086/344480. https://resolver.caltech.edu/CaltechAUTHORS:20170408-140210602
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Abstract
We use data from the BIMA Survey of Nearby Galaxies (SONG) to investigate the relationship between ellipticity and central mass concentration in barred spirals. Existing simulations predict that bar ellipticity decreases as inflowing mass driven by the bar accumulates in the central regions, ultimately destroying the bar. Using the ratio of the bulge mass to the mass within the bar radius as an estimate of the central mass concentration, we obtain dynamical mass estimates from SONG CO 1-0 rotation curve data. We find an inverse correlation between bar ellipticity and central mass concentration, consistent with simulations of bar dissolution.
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| Additional Information: | © 2003. The American Astronomical Society. Received 2002 July 3; accepted 2002 August 28. M. D. thanks S. Jogee, E. Laurikainen, W. W. Zeilinger, and K. Sakamoto for useful discussions; we thank the SONG team for providing the entire data set used in this paper. This work is partially supported by NSF AST 99-81289. This research has made use of the NASA/ IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. | ||||||||||||
| Group: | Infrared Processing and Analysis Center (IPAC) | ||||||||||||
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| Subject Keywords: | galaxies: evolution; galaxies: ISM; galaxies: spiral; galaxies: structure | ||||||||||||
| Issue or Number: | 1 | ||||||||||||
| DOI: | 10.1086/344480 | ||||||||||||
| Record Number: | CaltechAUTHORS:20170408-140210602 | ||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20170408-140210602 | ||||||||||||
| Official Citation: | Mousumi Das et al 2003 ApJ 582 190 | ||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
| ID Code: | 75907 | ||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||
| Deposited By: | 1Science Import | ||||||||||||
| Deposited On: | 19 Apr 2017 17:46 | ||||||||||||
| Last Modified: | 15 Nov 2021 16:56 |
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