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Molecular Gas and Star Formation in BIMA SONG Bars

Published online by Cambridge University Press:  13 May 2016

Kartik Sheth ,
S.N. Vogel ,
A.I. Harris ,
M.W. Regan ,
M.D. Thornley ,
T.T. Heifer ,
T. Wong ,
L. Blitz  and
D. C-J. Bock
Kartik Sheth
Affiliation:
Department of Astronomy, U. Maryland, College Park, MD 20742-2421
S.N. Vogel
Affiliation:
U. Maryland
A.I. Harris
Affiliation:
U. Maryland
M.W. Regan
Affiliation:
STScI
M.D. Thornley
Affiliation:
NRAO
T.T. Heifer
Affiliation:
U.C.-Berkeley
T. Wong
Affiliation:
U.C.-Berkeley
L. Blitz
Affiliation:
U.C.-Berkeley
D. C-J. Bock
Affiliation:
U.C.-Berkeley

Abstract

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Using a sample of 7 barred spirals from the BIMA Survey of Nearby Galaxies (SONG), we compare the molecular gas distribution in the bar, to recent massive star formation activity. In all 7 galaxies, Hα is offset azimuthally from the CO on the downstream side. The maximum offset, at the bar ends, ranges from 170-570 pc, with an average of 320±120 pc. We discuss whether the observed offsets are consistent with the description of gas flows in bars provided by the two main classes of models: n-body models and hydrodynamic models.

Type
Molecules in External Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 348 - 349
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

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