The extended rotation curve and the dark matter halo of M33
Edvige Corbelli,Paolo Salucci +1 more
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In this paper, the authors present the 21-cm rotation curve of the nearby galaxy M33 out to a galactocentric distance of 16 kpc (13 disk scale-lengths).Abstract:
We present the 21-cm rotation curve of the nearby galaxy M33 out to a galactocentric distance of 16 kpc (13 disk scale-lengths). The rotation curve keeps rising out to the last measured point and implies a dark halo mass larger than 5 10^{10} solar masses. The stellar and gaseous disks provide virtually equal contributions to the galaxy gravitational potential at large galactocentric radii but no obvious correlation is found between the radial distribution of dark matter and the distribution of stars or gas. Results of the best fit to the mass distribution in M33 picture a dark halo which controls the gravitational potential from 3 kpc outward, with a matter density which decreases radially as R^{-1.3}. The density profile is consistent with the theoretical predictions for structure formation in hierarchical clustering cold dark matter models but mass concentrations are lower than those expected in the standard cosmogony.read more
Citations
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Non-baryonic dark matter: observational evidence and detection methods
TL;DR: The evidence for the existence of dark matter in the universe is reviewed in this paper, where a general picture emerges, where both baryonic and non-baryonic dark matter is needed to explain current observations.
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Beyond the bulge: a fundamental relation between supermassive black holes and dark matter halos
TL;DR: In this paper, the authors investigated whether the masses MBH of supermassive black holes (SBHs) correlate with the total gravitational mass of their host galaxy, or the mass MDM of the dark matter halo in which they presumably formed.
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New Understanding of Large Magellanic Cloud Structure, Dynamics, and Orbit from Carbon Star Kinematics
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The cored distribution of dark matter in spiral galaxies
TL;DR: In this article, a new method for extracting rotation curves from Hi data cubes is presented; this method takes into account the existence of a warp and minimises projection effects; the rotation curves obtained are tested by taking them as input to construct model data cubes that are compared to the observed ones.
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Dark Matter Scaling Relations
Paolo Salucci,Andreas Burkert +1 more
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References
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A Universal Density Profile from Hierarchical Clustering
TL;DR: In this article, the authors used high-resolution N-body simulations to study the equilibrium density profiles of dark matter halos in hierarchically clustering universes, and they found that all such profiles have the same shape, independent of the halo mass, the initial density fluctuation spectrum, and the values of the cosmological parameters.
Book ChapterDOI
Third Reference Catalogue of Bright Galaxies
Gerard de Vaucouleurs,Antoinette de Vaucouleurs,Harold G. Corwin,Ronald J. Buta,G. Paturel,P. Fouque +5 more
TL;DR: In this article, a reference catalogue of bright galaxies in three volumes reflects the explosive growth of extragalactic astronomy over the last 15 years and includes all galaxies with apparent diameters larger than one arc minute, magnitudes brighter than about magnitude 15.5, and redshifts not larger than 15,000 km/sec.
Journal ArticleDOI
The Star Formation Law in Galactic Disks
TL;DR: In this article, the dependence of the massive star formation rate (SFR) on the density and dynamics of the interstellar gas was investigated in 15 galaxies and the relationship between the SFR and gas surface density was defined.
Journal ArticleDOI
Rotational properties of 21 SC galaxies with a large range of luminosities and radii, from NGC 4605 /R = 4kpc/ to UGC 2885 /R = 122 kpc/
TL;DR: In this article, major axis spectra extending to the faint outer regions of the galaxies were used to deduce rotation curves for 21 galaxies whose properties encompass a wide range of radii, masses, and luminosities.