Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-26T18:37:38.975Z Has data issue: false hasContentIssue false
  • English
  • Français

CDM in LSB Galaxies: Toward the Optimal Halo Profile

Published online by Cambridge University Press:  26 May 2016

W. J. G de Blok
W. J. G de Blok*
Affiliation:
Department of Physics and Astronomy, Cardiff University, 5 the Parade, Cardiff, CF24 3YB, UK

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Low Surface Brightness (LSB) galaxies are dominated by dark matter. High-resolution rotation curves suggest that their total mass-density distributions are dominated by constant density cores rather than the steep and cuspy distributions found in Cold Dark Matter (CDM) simulations. the data are best described by a model with a soft core with an inner power-law mass-density slope α = 0.2 ± 0.2. However no single universal halo profile provides an adequate description of the data. the observed mass profiles appear to be inconsistent with ACDM.

Type
Part 3: Central Density Cusps, Thin Disks, and Dark Halo Substructure
Information
Symposium - International Astronomical Union , Volume 220: Dark Matter in Galaxies , 2004 , pp. 69 - 76
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

de Blok, W. J. G., Bosma, A. 2002, A&A, 385, 816.Google Scholar
de Blok, W. J. G., Bosma, A., McGaugh, S. 2003, MNRAS, 340, 657.Google Scholar
de Blok, W. J. G., McGaugh, S. S. 1997, MNRAS, 290, 533.CrossRefGoogle Scholar
de Blok, W. J. G., McGaugh, S. S., Rubin, V. C. 2001a, AJ, 122, 2396.Google Scholar
de Blok, W. J. G., McGaugh, S. S., Bosma, A., Rubin, V. C. 2001b, ApJ, 552, L23.Google Scholar
Hayashi, W., Navarro, J.F., Power, C., Jenkins, A.R., Frenk, C.S., White, S.D.M., Springel, V., Stadel, J., Quinn, T.R., 2003, MNRAS, submitted (astro-ph/0310576).Google Scholar
Marchesini, D., D'Onghia, E., Ch incarini, G., Firmani, C., Conconi, P., Molinari, E., Zacchei, A., 2002, ApJ, 5 75, 801.Google Scholar
McGaugh, S. S., Rubin, V. C., de Blok, W. J. G. 2001, AJ, 122, 2381.Google Scholar
Navarro, J. F., Frenk, C. S., White, S. D. M., 1996, ApJ, 462, 563.Google Scholar
Navarro, J. F., Frenk, C. S., White, S. D. M., 1997, ApJ, 490, 493.Google Scholar
Pickering, T. E., Navarro, J. F., Rix, H.-W., Impey, C. D. 1998, in Galactic Halos, ed. Zaritsky, D. (San Francisco: ASP), p. 199.Google Scholar
Swaters, R. A., Madore, B. F., Trewhella, M. 2000, ApJ, 531, L107.Google Scholar
Swaters, R. A., Madore, B. F., van den Bosch, F. C., Balcells, M. 2003, ApJ, 583, 732.Google Scholar