Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2009-02-10
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
Version matching the Proceedings of the CRAL-IPNL conference "Dark Energy and Dark Matter", Lyon, 2008, references updated, an
Scientific paper
In the past years a wealth of observations has unraveled the structural properties of the Dark and Luminous mass distribution in spirals. These have pointed out to an intriguing scenario not easily explained by present theories of galaxy formation. The investigation of individual and coadded objects has shown that the spiral rotation curves follow, from their centers out to their virial radii, a Universal profile (URC) that arises from the tuned combination of a stellar disk and of a dark halo. The importance of the latter component decreases with galaxy mass. Individual objects, on the other hand, have clearly revealed that the dark halos encompassing the luminous discs have a constant density core. This resulting observational scenario poses important challenges to presently favored theoretical $\Lambda$CDM Cosmology.
Martins Christiane Frigerio
Salucci Paolo
No associations
LandOfFree
The mass distribution in Spirals 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 The mass distribution in Spirals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The mass distribution in Spirals will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-20412