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Hi and Galaxy Formation in Loose Groups

Published online by Cambridge University Press:  05 March 2013

Daniel J. Pisano
Daniel J. Pisano*
Affiliation:
CSIRO ATNF, Epping NSW 1710, Australia. Email: [email protected]
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Abstract

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Models of hierarchical galaxy formation predict that large numbers of low-mass, dark matter halos remain around galaxies today. These models predict an order of magnitude more halos than observed stellar satellites in the Local Group. One possible solution to this discrepancy is that the high-velocity clouds (HVCs) around the Milky Way may be associated with the excess dark matter halos and be the gaseous remnants of the galaxy formation process. If this is the case, then analogues to the HVCs should be visible in other groups. In this paper, I review the observations of Hi clouds lacking stars around other galaxies and in groups, present early results from our Hi survey of loose groups analogous to the Local Group, and discuss implications for the nature of HVCs and galaxy formation.

Keywords

Local Groupintergalactic mediumgalaxies: dwarfgalaxies: formation
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 21 , Special Issue 4: Structure and Dynamics in the Local Universe , 2004 , pp. 390 - 392
Copyright
Copyright © Astronomical Society of Australia 2004

References

Blitz, L., Spergel, D., Teuben, P. J., Hartmann, D., & Burton, W. B. 1999, ApJ, 514, 818 CrossRefGoogle Scholar
Braun, R., & Burton, W. B. 1999, A&A, 341, 437 Google Scholar
Bregman, J. N. 1980, ApJ, 236, 577 CrossRefGoogle Scholar
Cole, S., Aragón-Salamanca, A., Frenk, C. S., Navarro, J. F., & Zepf, S. E. 1994, MNRAS, 271, 781 CrossRefGoogle Scholar
Colín, P., Avila-Reese, V., & Valenzuela, O. 2000, ApJ, 542, 622 Google Scholar
de Heij, V., Braun, R., & Burton, W. B. 2002, A&A, 392, 417 Google Scholar
Gibson, B. K., Giroux, M. L., Penton, S. V., Stocke, J. T., Shull, J. M., & Tumlinson, J. 2001, AJ, 122, 3280 Google Scholar
Hickson, P. 1982, ApJ, 255, 382 Google Scholar
Hunter, D. A., Wilcots, E. M., van Woerden, H., Gallagher, J. S., & Kohle, S. 1998, ApJ, 495, L47 Google Scholar
Kamphuis, J., & Sancisi, R. 1993, A&A, 273, L31 Google Scholar
Kauffman, G., White, S. D. M., & Guiderdoni, B. 1993, MNRAS, 264, 201 CrossRefGoogle Scholar
Klypin, A., Kravtsov, A. V., Valenzuela, O., & Prada, F. 1999, ApJ, 522, 82 Google Scholar
Moore, B., Ghigna, S., Governato, F., Lake, G., Quinn, T., Stadel, J., & Tozzi, P. 1999, ApJ, 524, L19 CrossRefGoogle Scholar
Pisano, D. J., & Wilcots, E. M. 2003, ApJ, 584, 228 Google Scholar
Pisano, D. J., Wilcots, E. M., & Elmegreen, B. G. 1998, AJ, 115, 975 CrossRefGoogle Scholar
Pisano, D. J., Barnes, D. G., Gibson, B. K., Staveley-Smith, L., & Freeman, K. C. 2004a, IAU Symp. 217, eds. P.-A. Duc, J. Braine, & E. Brinks, 20 Google Scholar
Pisano, D. J., Barnes, D. G., Gibson, B. K., Staveley-Smith, L., Freeman, K. C., & Kilborn, V. A. 2004b, ApJ, 610, L17 Google Scholar
Putman, M. E., et al. 1998, Natur, 394, 752 Google Scholar
Putman, M. E., Thom, C., Gibson, B. K., & Staveley-Smith, L. 2004, ApJ, 603, L77 Google Scholar
Shapiro, P. R., & Field, G. B. 1976, ApJ, 205, 762 CrossRefGoogle Scholar
Silk, J., & Norman, C. 1981, ApJ, 247, 59 CrossRefGoogle Scholar
Theis, C., & Kohle, S. 2001, A&A, 370, 365 Google Scholar
Tripp, T. M., et al. 2003, AJ, 125, 3122 CrossRefGoogle Scholar
Tully, R. B., Somerville, R. S., Trentham, N., & Verheijen, M. A. W. 2002, ApJ, 569, 573 Google Scholar
Wakker, B. P., & van Woerden, H. 1997, ARA&A, 35, 217 Google Scholar
Wakker, B. P., et al. 1999, Natur, 400, 388 Google Scholar
Wilcots, E. M., & Miller, B. W. 1998, AJ, 116, 2363 CrossRefGoogle Scholar
Zwaan, M. A. 2001, MNRAS, 325, 1142 Google Scholar