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Evidence for a Mass Outflow from Our Galactic Center

Published online by Cambridge University Press:  01 December 2007

Casey Law
Casey Law*
Affiliation:
Astronomical Institute “Anton Pannekoek”, University of Amsterdam, Kruislaan 403, Amsterdam, 1098 SJ, Netherlands email: claw@science.uva.nl
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Abstract

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We discuss the nature of the Galactic center lobe (GCL), a degree-tall, loop-like structure apparently erupting from the central few hundred parsecs of our Galaxy. Although its coincidence with the Galactic center has inspired diverse models for its origin, the observational evidence connecting this structure to the GC region has been thin. We describe a multiwavelength observing campaign with the VLA, GBT, Spitzer, and other telescopes that finds compelling evidence that the structure is likely formed by a mass outflow from the central tens of parsecs of our Galaxy. The size and mass of the putative outflow is consistent with that expected from the observed supernova rate and gas pressure in the GC region. If the GCL is a mass outflow, its relative proximity offers a unique opportunity for studying these structures in unprecedented detail.

Keywords

Galaxy: center – ISM: jets and outflows – galaxies: starburst
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S250: Massive Stars as Cosmic Engines , December 2007 , pp. 407 - 412
Copyright
Copyright © International Astronomical Union 2008

References

Belmont, R., Tagger, M., Muno, M. et al. 2005, ApJ, 631, L53CrossRefGoogle Scholar
Benjamin, R. A., Churchwell, E., Babler, B. L. et al. 2005, ApJ, 630, L149CrossRefGoogle Scholar
Bland-Hawthorn, J. & Cohen, M. 2003, ApJ, 582, 246CrossRefGoogle Scholar
Cecil, G., Bland-Hawthorn, J., Veilleux, S. et al. 2001, ApJ, 555, 338CrossRefGoogle Scholar
Chevalier, R. A. 1992, ApJ, 397, L39CrossRefGoogle Scholar
Eckart, A. & Genzel, R. 1996, Nature, 383, 415CrossRefGoogle Scholar
Figer, D. F., McLean, I. S., & Morris, M. 1999, ApJ, 514, 202CrossRefGoogle Scholar
Figer, D. F., Rich, R. M., Kim, S. S. et al. 2004, ApJ, 601, 319CrossRefGoogle Scholar
Gaustad, J. E., McCullough, P. R., Rosing, W., & VanBuren, D. Buren, D. 2001, PASP, 113, 1326CrossRefGoogle Scholar
Ghez, A., Salim, S., Hornstein, S. D. et al. 2005, ApJ, 620, 744CrossRefGoogle Scholar
Law, C. J., et al. 2008, in preparationGoogle Scholar
Martin, C. L., 2005 ApJ, 621, 227CrossRefGoogle Scholar
Melia, F. & Falcke, H., 2001 ARA&A, 39, 309Google Scholar
Muno, M. P., Baganoff, F. K., & Bautz, M. W., 2004 ApJ, 613, 326CrossRefGoogle Scholar
Rodríguez-Fernández, N. J. & Martín-Pintado, J., 2005 A&A, 429, 923Google Scholar
Shibata, K. & Uchida, Y., 1987 PASJ, 39, 559Google Scholar
Sofue, Y. & Handa, T., 1984 Nature, 310, 568CrossRefGoogle Scholar
Thurow, J. C. & Wilcots, E. M., 2005 AJ, 129, 745CrossRefGoogle Scholar
Uchida, K. I., Morris, M. R., Serabyn, E. & Bally, J., 1994 ApJ, 421, 505CrossRefGoogle Scholar
Uchida, Y., Sofue, Y. & Shibata, K., 1985 Nature, 317, 699CrossRefGoogle Scholar
Veilleux, S., Cecil, G., & Bland-Hawthorn, J., 2005 ARA&A, 43, 769Google Scholar
Yusef-Zadeh, F., Morris, M., & Chance, D., 1984 Nature, 310, 557CrossRefGoogle Scholar