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Resolved Kennicutt-Schmidt Law in Nearby Galaxies

Momose, R. and Koda, J. and Kennicutt, R. C., Jr. and Egusa, F. and Okumura, S. K. and Calzetti, D. and Liu, G. and Meyer, J. Donovan and Scoville, N. Z. and Sawada, T. and Kuno, N. (2012) Resolved Kennicutt-Schmidt Law in Nearby Galaxies. In: Molecular Gas, Dust, and Star Formation in Galaxies. IAU Symposium Proceedings Series. No.292. Cambridge University Press , Cambridge, p. 335. ISBN 9781107033818. https://resolver.caltech.edu/CaltechAUTHORS:20181116-100129836

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Abstract

The Kennicutt-Schmidt law (Schmidt 1959; Kennicutt 1998, hereafter K-S law) is a power law correlation between area averaged star formation rate (Σ_(SFR)) and gas surface density (Σ_(gas)). Despite its importance, the physics that underlie this correlation has remained unclear. The power law index, N, is a prime discriminator of the mechanisms that regulate star formation and form the K-S law (e.g. Leroy et al. 2008; Tan 2010). We present a study of the resolved K-S law for 10 nearby disk galaxies using our new CO(1-0) data at 750 and 500 pc resolutions. The CO(1-0) line emission is established as a tracer of the molecular gas column density, and results in a super-linear correlation (N = 1.3 and 1.8). We discuss the cause of the discrepancy between previous studies, and the mechanism of star formation indicated from our new results.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1017/s1743921313001610DOIArticle
http://adsabs.harvard.edu/doi/10.1017/S1743921313001610ADSArticle
ORCID:
AuthorORCID
Koda, J.0000-0002-8762-7863
Kennicutt, R. C., Jr.0000-0001-5448-1821
Calzetti, D.0000-0002-5189-8004
Scoville, N. Z.0000-0002-0438-3323
Additional Information:© 2013 International Astronomical Union.
Subject Keywords:stars: formation — galaxies: spiral — ISM: molecules
Series Name:IAU Symposium Proceedings Series
Issue or Number:292
Record Number:CaltechAUTHORS:20181116-100129836
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181116-100129836
Official Citation:Momose, R., Koda, J., Kennicutt, R., Egusa, F., Okumura, S., Calzetti, D., . . . Kuno, N. (2012). The Resolved Kennicutt-Schmidt Law in Nearby Galaxies. Proceedings of the International Astronomical Union, 8(S292), 335-335. doi:10.1017/S1743921313001610
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90956
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Nov 2018 18:17
Last Modified:09 Mar 2020 13:18

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