2015MNRAS.449..403B

Query : 2015MNRAS.449..403B

2015MNRAS.449..403B - Mon. Not. R. Astron. Soc., 449, 403-413 (2015/May-1)

Dark matter equation of state from rotational curves of galaxies.

BARRANCO J., BERNAL A. and NUNEZ D.

Abstract (from CDS):

In this work, we model galactic haloes describing the dark matter as a non-zero pressure fluid and derive, not impose, a dark matter equation of state by using observational data of the rotation curves of galaxies. In order to reach hydrostatic equilibrium, as expected for the halo, it is mandatory that dark fluid's pressure should not be zero. The equation of state is obtained by solving the matter-geometry system of equations assuming different dark matter density or rotational velocity profiles. The resulting equations of state are, in general, different to a barotropic equation of state. The free parameters of the equation of state are fixed by fitting the observed rotational velocities of a set of galaxies.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): equation of state - galaxies: haloes - galaxies: kinematics and dynamics - dark energy

Simbad objects: 20

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Number of rows : 20
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 ESO 14-4 G 02 41 18.0476907144 -78 07 41.849648220   15.34   13.76   ~ 20 0
2 ESO 302-12 AG? 03 50 30.75 -39 22 33.9   15.13   14.62   ~ 23 0
3 MCG-06-12-006 AG? 05 08 07.62 -38 18 33.5   13.08   13.3 13.2 ~ 70 0
4 MCG-04-15-002 EmG 05 58 39.37 -25 24 53.3   15.01   14.38 15.1 ~ 53 0
5 ESO 425-18 G 06 20 47.5 -27 55 02   14.36   14.39   ~ 16 0
6 ESO 206-14 AG? 06 28 28.52 -48 45 50.0   14.92   13.74   ~ 36 0
7 LSB F563-1 LSB 08 55 01.4 +19 45 06           ~ 73 0
8 LSB F568-3 LSB 10 26 59 +22 13.6           ~ 81 0
9 UGC 5750 AG? 10 35 45.12 +20 59 24.9   17       ~ 81 0
10 VLSB F570-V01 LSB 11 23 00.1 +17 29 00           ~ 5 0
11 LSB F571-8 LSB 11 33 54.3 +19 21 18           ~ 50 0
12 Z 97-40 LIN 11 39 14.8736598984 +17 08 37.200948684   14.8       ~ 157 0
13 VLSB F579-V01 LSB 14 32 48.1 +22 45 58           ~ 42 0
14 LSB F583-4 LSB 15 52 12 +18 47.1           ~ 60 0
15 LEDA 86657 LSB 15 57 27.483 +20 39 59.12           ~ 104 0
16 MCG+08-35-014 AG? 19 31 33.6588790608 +49 52 46.985444616   17       ~ 17 0
17 UGC 11616 AG? 20 41 13.440 +63 30 38.51   17       ~ 31 0
18 UGC 11648 AG? 20 53 09.507 +67 10 32.95   17       ~ 40 0
19 UGC 11748 GiG 21 27 39.7191280248 +45 28 58.796320620   17       ~ 33 0
20 UGC 11819 AG? 21 49 10.7170526016 +41 56 53.546658468   17       ~ 23 0

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