Dark Matter in Dwarf Galaxies: Latest Density Profile Results

Details Dark Matter in Dwarf Galaxies: Latest Density Profile Results Dark Matter in Dwarf Galaxies: Latest Density Profile Results

2003-10-07

arxiv.org/abs/astro-ph/0310193v1

Astronomy and Astrophysics

Astrophysics

10 pages, 4 figures (1 in color), uses newpasp.sty. To appear in the proceedings of the conference "Satellites and Tidal Strea

Scientific paper

We 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.

Affiliated with

Also associated with

No associations

Rating

Dark Matter in Dwarf Galaxies: Latest Density Profile Results does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dark Matter in Dwarf Galaxies: Latest Density Profile Results, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dark Matter in Dwarf Galaxies: Latest Density Profile Results will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-640377