The Kinematics in the Cores of Low Surface Brightness Galaxies

R. A. Swaters, M. A. W. Verheijen, M. A. Bershady, D. R. Andersen

OnderzoeksoutputAcademicpeer review

Samenvatting

Systematic effects on HI and Hα long-slit observations make a measurement of the inner slope of the dark matter density distribution difficult to determine. Halos with constant density cores and ones with r-1 profiles both appear consistent with the data, although constant density cores generally provide better fits. High-resolution, two-dimensional velocity fields remove most of the systematic effects, yet as a result of noncircular and random motions the inner slopes still cannot be accurately measured. Halo concentration parameters provide a more useful test of cosmological models because they are more tightly constrained by observations. The concentration parameters for LSB galaxies appear consistent with, but on the low end of the distribution predicted by CDM.
Originele taal-2English
TitelDark Matter in Galaxies
RedacteurenS. D. Ryder, D. J. Pisano, M. A. Walker, K. C. Freeman
UitgeverijAstronomical Society of the Pacific
Pagina's77
Volume220
ISBN van geprinte versie978-1583811672
StatusPublished - 1-jul-2004
Evenement220th Symposium of the International Astronomical Union Held During the Iau General Assembly XXV, S - Sidney, Australia
Duur: 21-jul-200325-jul-2003

Conference

Conference220th Symposium of the International Astronomical Union Held During the Iau General Assembly XXV, S
Land/RegioAustralia
StadSidney
Periode21/07/200325/07/2003

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