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On the Kinematics of Extraplanar Gas

Published online by Cambridge University Press:  17 September 2012

R.A. Benjamin
R.A. Benjamin*
Affiliation:
Dept. of Physics, University of Wisconsin-Whitewater, 800 West Main St, Whitewater, WI 53190, USA
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Abstract

A review of the observational constraints and theoretical models of extra-planar rotation (lagging halos) is presented. It is becoming clear that lagging halos, with vertical gradients in rotation speeds ranging from dvΘ/dz = −8to − 60km s−1kpc−1, are a ubiquitous phenomenon. The observational data so far does not allow one to say definitively whether this number changes with radius or with vertical height in a galaxy, but it is pointed out that such measurements, along with constraints on the presence of radial flows, will provide a crucial test that may allow one to distinguish between the different physical models that produce lagging halos. Some challenges in kinematically distinguishing between Galactic circulation and extragalactic accretion are also discussed.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 56: The Role of the Disk-Halo Interaction in Galaxy Evolution: Outflow vs. Infall? , 2012 , pp. 299 - 304
Copyright
© EAS, EDP Sciences, 2012

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References

Beichman, C.A., 1987, ARA&A, 25, 521CrossRef
Balsara, D.S., & Kim, J., 2005, ApJ, 207, 911
Barbieri, C.V., Fraternali, F., Oosterloo, T., et al., 2005, AN, 439, 947
Barnabe, M, Ciotti, Fraternali F., & Sancisi, R., 2006, A&A, 446, 61
Boomsma, R., Oosterloo, T.A., Fraternali, F., van der Hulst, J.M., & Sancisi, R., 2008, A&A, 490, 555
Booth, C.M., & Theuns, T., 2007, MNRAS, 381, 89CrossRef
Bregman, J.N., 1980, ApJ, 236, 577CrossRef
Breitschwerdt, D., McKenzie, J.F., & Voelk, H.J., 1991, A&A, 245, 79
Breitschwerdt, D., McKenzie, J.F., & Voelk, H.J., 1993, A&A, 269, 54
Collins, J.A., Benjamin, R.A., & Rand, R.J., 2002, ApJ, 578, 98CrossRef
Corbelli, E., & Salpeter, E.E., 1988, ApJ, 326, 551CrossRef
Cox, D.P., 2005, ARA&A, 43, 337CrossRef
Dahlem, M., Lisenfeld, U., & Rossa, J., 2006, A&A, 457, 121
de Avillez, M., & Breitschwerdt, D., 2005, A&A, 436, 585
de Gouveia Dal Pino, E.M., Melioli, C., D’Ercole, A., Brighenti, F., & Raga, A., 2008 [arXiv:0811.0038]
Everett, J.G., Zweibel, E.G., Benjamin, R.A., et al., 2008, ApJ, 674, 258CrossRef
Fraternali, F., van Moorsel, G., Sancisi, R., & Oosterloo, T., 2002, AJ, 12, 3124CrossRef
Fraternali, F., & Binney, J., 2006, MNRAS, 366, 449CrossRef
Fraternali, F., & Binney, J., 2008, MNRAS, 386, 935CrossRef
Greisen, E.W., Spekkens, K., & van Moorsel, G.A., 2009, AJ, 137, 4718CrossRef
Heald, G.H., Rand, R.J., Benjamin, R.A., Collins, J.A., & Bland-Hawthorn, J., 2006a, ApJ, 636, 181CrossRef
Heald, G.H., Rand, R.J., Benjamin, R.A., & Bershady, M.A., 2006b, ApJ, 647, 1018CrossRef
Heald, G.H., Rand, R.J., Benjamin, R.A., & Bershady, M.A., 2007, ApJ, 663, 933CrossRef
Hess, K.M., Pisano, D.J., Wilcots, E.M., & Chengular, J., 2009 [arXiv:0904.3494]
Hill, A.S., Haffner, L.M., & Reynolds, R.J., 2009 [arXiv:0901.0712]
Houck, J.C., & Bregman, J.N., 1980, ApJ, 352, 506CrossRef
Levine, E.S., Heiles, C., & Blitz, L., 2008, ApJ, 679, 1288CrossRef
Lockman, F.J., Benhamin, R.A., Heroux, A.J., & Langston, G.L., 2008, ApJ, 679, L21CrossRef
Matthews, L.D., & Wood, K., 2003, ApJ, 593, 721CrossRef
Melioli, C., Brighenti, F., DErcole, A., & de Gouveia Dal Pino, E.M., 2008, MNRAS, 388, 573CrossRef
Oosterloo, T., Fraternali, F., & Sancisi, R., 2007, AJ, 134, 1019CrossRef
Peek, J.E.G., Putman, M.E., & Sommer-Larsen, J., 2008, ApJ, 674, 227CrossRef
Pidopryhora, Y., Lockman, F.J., & Shields, J.C., 2007, AJ, 656, 928CrossRef
Rand, R.J., 1997, ApJ, 474, 129CrossRef
Rand, R.J., 2000, ApJ, 537, 13CrossRef
Rand, R.J., & Benjamin, R.A., 2008, ApJ, 676, 991CrossRef
Savage, B.D, Sembach, K.R., & Lu, L., 1997, AJ, 113, 2158CrossRef
Soifer, B.T., Houck, J.R., & Neugebauer, G., 1987, ARA&A, 25, 187CrossRef
Swaters, R.A., Sancisi, R., & van der Hulst, J.M., 1997, ApJ, 491, 140CrossRef
York, D.G., Songaila, A., Blades, J.C., et al., 1982, ApJ, 255, 467CrossRef
Zirakashvili, V.N., Breitschwerdt, D., Ptuskin, V.S., & Voelk, H.J., 1996, A&A, 311, 113