SIMBAD references

2006ApJ...641L.109C - Astrophys. J., 641, L109-L112 (2006/April-3)

The extended H I rotation curve and mass distribution of M31.

CARIGNAN C., CHEMIN L., HUCHTMEIER W.K. and LOCKMAN F.J.

Abstract (from CDS):

New H I observations of Messier 31 (M31) obtained with the Effelsberg and Green Bank 100 m telescopes make it possible to measure the rotation curve of that galaxy out to ∼35 kpc. Between 20 and 35 kpc, the rotation curve is nearly flat at a velocity of ∼226 km/s. A model of the mass distribution shows that at the last observed velocity point, the minimum dark-to-luminous mass ratio is ∼0.5 for a total mass of 3.4x10¹¹ M_☉ at R<35 kpc. This can be compared to the estimated Milky Way mass of 4.9x10¹¹ M_☉ for R<50 kpc.

Abstract Copyright: ∼

Journal keyword(s): galaxies: fundamental parameters (masses) - Galaxies: Halos - Galaxies: Individual: Messier Number: M31 - Galaxies: Kinematics and Dynamics - Galaxies: Structure - Galaxies: Local Group

Simbad objects: 7

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