Molecular gas and star formation in BIMA SONG bars

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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, Halpha 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. This work is supported by NSF grants AST 9981289, AST 9981308.
Presented at "Galaxy Disks and Disk Galaxies" conference (June 12-16, Rome, Italy), 2 pages, to appear in APS Conference Series. The entire poster (13.6 MB) can be downloaded from http://bima.astro.umd.edu/projects/bimasong/pubs/romeposter.ps

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Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/1442

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/0008088
 http://arxiv.org/abs/astro-ph/0008088

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arXiv