2013ApJ...775L..30J


Query : 2013ApJ...775L..30J

2013ApJ...775L..30J - Astrophys. J., 775, L30 (2013/September-3)

Variations in a universal dark matter profile for dwarf spheroidals.

JARDEL J.R. and GEBHARDT K.

Abstract (from CDS):

Using a newly developed modeling technique, we present orbit-based dynamical models of the Carina, Draco, Fornax, Sculptor, and Sextans dwarf spheroidal (dSph) galaxies. These models calculate the dark matter profiles non-parametrically without requiring any assumptions to be made about their profile shapes. By lifting this restriction, we discover a host of dark matter profiles in the dSphs that are different from the typical profiles suggested by both theorists and observers. However, when we scale these profiles appropriately and plot them on a common axis, they appear to follow an approximate r.–1 power law with considerable scatter.

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Journal keyword(s): dark matter - galaxies: dwarf - galaxies: kinematics and dynamics - Local Group

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
2 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
3 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
4 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
5 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
6 NAME Local Group GrG ~ ~           ~ 9325 0

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