Dark Matter in Dwarf Galaxies: Latest Density Profile Results

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dc.creatorSimon, Joshua D.
dc.creatorBolatto, Alberto D.
dc.creatorLeroy, Adam
dc.creatorBlitz, Leo
dc.date2003-10-07
dc.date.accessioned2026-07-07T02:10:13Z
dc.date.available2026-07-07T02:10:13Z
dc.descriptionWe present high-resolution two-dimensional velocity fields in Halpha and CO of the nearby dwarf galaxy NGC 2976. Our observations were made at both higher spatial resolution (~75 pc) and higher velocity resolution (13 km/s in Halpha and 2 km/s in CO) than most previous studies. We show that NGC 2976 has a very shallow dark matter density profile, with rho(r) lying between rho ~ r^-0.3 and rho ~ r^0. We carefully test the effects of systematic uncertainties on our results, and demonstrate that well-resolved, two-dimensional velocity data can eliminate many of the systematic problems that beset longslit observations. We also present a preliminary analysis of the velocity field of NGC 5963, which appears to have a nearly NFW density profile.
dc.description10 pages, 4 figures (1 in color), uses newpasp.sty. To appear in the proceedings of the conference "Satellites and Tidal Streams", La Palma, Spain, 26-30 May 2003, eds. F. Prada, D. Martinez-Delgado, T. Mahoney
dc.identifierhttps://arxiv.org/abs/astro-ph/0310193
dc.identifierhttp://arxiv.org/abs/astro-ph/0310193
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/6666
dc.subjectAstrophysics
dc.titleDark Matter in Dwarf Galaxies: Latest Density Profile Results
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