2003MNRAS.339..243J


Query : 2003MNRAS.339..243J

2003MNRAS.339..243J - Mon. Not. R. Astron. Soc., 339, 243-259 (2003/February-2)

Dark halo properties from rotation curves.

JIMENEZ R., VERDE L. and OH S.P.

Abstract (from CDS):

We study a large set of high spatial resolution optical rotation curves of galaxies with the goal of determining the model parameters for a disc embedded within a cold dark matter (CDM) halo, which we model with either a Navarro-Frenk-White (NFW) profile or pseudo-isothermal profile. We show that parameter degeneracies present in lower resolution data are lifted at these higher resolutions. 34 per cent of the galaxies do not have a meaningful fit when using the NFW profile and 32 per cent when using the pseudo-isothermal profile, however only 14 per cent do not have a meaningful fit in either model. In both models we find correlations between the disc baryon fraction fdand the spin parameter of the halo λ', between fdand the dark halo mass M200, and between M200and the concentration parameter c. We show that the distribution of the concentration parameter c, for a NFW halo, is in good agreement with CDM predictions; no significant galaxy population is found with very low values of c. The overall distribution of λ' is in good agreement with theoretical predictions from hierarchical tidal torque theory. The whole sample is also well fitted by a pseudo-isothermal dark halo with a core, but the size of the core is rather small (6 per cent of the virial radius or smaller; for 70 per cent of the sample the core size is less than 2 kpc). Thus we conclude that the profile of dark matter is steep (r–1 or steeper) down to this radius; large dark matter cores (and therefore very low dark matter central densities) seem to be excluded. Low-surface-brightness galaxies tend to have higher values of λ' for a given fdand lower values of c for a given mass than high-surface-brightness galaxies. In an appendix we give some useful formulae for pseudo-isothermal profile haloes and we discuss in detail the issue of parameter degeneracies.

Abstract Copyright: RAS

Journal keyword(s): galaxies: formation - galaxies: kinematics and dynamics - galaxies: spiral - cosmology: theory

Simbad objects: 81

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Number of rows : 81
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 UGC 346 LSB 00 34 55.919 +31 56 55.66   14.8       ~ 28 0
2 UGC 673 GiG 01 06 09.630 +31 24 20.66   15.5       ~ 48 0
3 NGC 582 GiG 01 31 58.045 +33 28 35.45   13.7       ~ 73 0
4 UGC 1531 G 02 02 34.3907061672 +17 10 03.588094380   15.1       ~ 25 0
5 UGC 1536 G 02 02 54.9173161704 +07 31 25.815339228   15.4       ~ 21 0
6 UGC 2185 GiG 02 43 11.309 +40 25 36.22   13.8       ~ 33 0
7 UGC 3049 G 04 26 51.6561664776 +01 42 16.177092624   15.4       ~ 19 0
8 NGC 1620 GiG 04 36 37.3587737352 -00 08 36.824388684   12.5   12.1 12.2 ~ 137 0
9 UGC 3270 GiC 05 15 19.8340779840 +06 28 25.239627192   15.5       ~ 32 0
10 UGC 3410 GiP 06 14 29.619 +80 26 59.47   14.35 13.17     ~ 66 0
11 UGC 3652 G 07 03 51.183 +22 22 10.34   14.7       ~ 29 0
12 IC 467 GiP 07 30 18.400 +79 52 20.99   12.7       ~ 117 0
13 IC 2219 rG 08 02 36.5242831128 +27 26 14.940404160   14.5       ~ 49 0
14 UGC 4232 GiG 08 07 21.773 +17 45 07.21   15.1       ~ 24 0
15 NGC 2596 rG 08 27 26.5144127904 +17 17 02.740697556   14.2       ~ 64 0
16 UGC 4580 EmG 08 46 33.2806064904 +48 25 48.213419160   14.5       ~ 27 1
17 NVSS J091649+272923 rG 09 16 49.4600934576 +27 29 22.533005868   14.9       ~ 46 0
18 UGC 4996 EmG 09 23 15.721 -00 43 41.24   14.4   14.4 14.5 ~ 40 0
19 UGC 5058 GiG 09 31 22.214 +67 46 54.50   15.4       ~ 18 0
20 NGC 3095 GiG 10 00 05.8037684890 -31 33 09.714480192   12.45 11.58 12.2 11.7 ~ 87 0
21 UGC 5396 GiG 10 01 40.466 +10 45 22.91   14.6       ~ 58 0
22 ESO 435-50 G 10 10 50.4 -30 25 26   15.94   14.94   ~ 37 0
23 ESO 263-14 G 10 10 59.898 -45 09 03.77   13.83   12.43   ~ 21 0
24 ESO 317-41 GiG 10 31 23.1149036016 -42 03 38.266484832   14.42   13.18   ~ 51 0
25 ESO 436-39 EmG 10 33 59.1434997888 -30 10 04.367386344   14.92   13.50   ~ 49 0
26 NGC 3294 G 10 36 16.2564642096 +37 19 29.049225924   11.5       ~ 194 0
27 ESO 437-30 EmG 10 39 14.894 -30 17 52.08   13.69   12.16 12.9 ~ 68 0
28 ESO 501-68 EmG 10 39 18.2459759208 -26 50 23.697404808   14.29   13.07   ~ 63 0
29 ESO 437-31 GiC 10 39 22.090 -29 35 04.94   14.76   13.74   ~ 42 0
30 ESO 437-54 EmG 10 43 38.881 -28 51 59.68   16.00   14.49   ~ 53 0
31 ESO 501-86 EmG 10 43 47.1915952200 -24 22 04.965735252   13.87   12.78   ~ 47 0
32 NGC 3437 EmG 10 52 35.7533541720 +22 56 02.883954120   12.575 11.961 11.474 10.818 ~ 172 1
33 MCG-05-27-003 EmG 11 15 03.3921055416 -28 23 32.843654988   13.83   12.44 13.1 ~ 47 0
34 UGC 6544 EmG 11 33 42.0372010704 +23 24 45.746134524   15.1       ~ 34 0
35 ESO 439-18 GiG 11 38 00.5005231872 -32 19 29.209509912   14.09   13.30   ~ 51 0
36 ESO 439-20 G 11 38 15.491 -29 43 42.68   14.26   13.04   ~ 38 0
37 UGC 7145 GiG 12 09 50.944 +38 13 06.74   15.4       ~ 43 0
38 ESO 322-19 GiC 12 29 07.196 -40 40 24.55   14.84   13.60 14.4 ~ 33 0
39 ESO 322-42 GiG 12 38 40.924 -42 12 51.01   14.52   13.22 13.7 ~ 53 0
40 ESO 322-45 GiG 12 40 01.6643604120 -42 02 33.830978208   14.41   12.86   ~ 44 0
41 ESO 322-48 GiC 12 40 29.718 -41 04 11.38   15.21   14.10   ~ 28 0
42 ESO 322-76 GiG 12 46 41.9657638440 -40 01 28.743589200   14.30   14.0 13.6 ~ 30 0
43 ESO 268-44 G 12 48 42.2063155080 -45 00 29.351921400   14.44   13.25 13.6 ~ 47 0
44 ESO 323-25 GiG 12 52 39.0179620416 -39 01 41.547235116   13.41 13.39 12.17 12.9 ~ 58 0
45 ESO 323-27 GiG 12 52 50.4844879872 -40 27 06.159808332   13.68   12.37   ~ 49 0
46 ESO 323-39 GiC 12 54 26.466 -40 22 20.19   15.38   14.32 14.9 ~ 24 0
47 LEDA 44077 GiC 12 55 45.9 -17 20 04   15       ~ 8 0
48 ESO 381-51 GiG 13 02 07.478 -33 07 14.62   14.43   13.12   ~ 37 0
49 ESO 382-6 G 13 05 32.377 -32 57 37.71   15.40   14.33   ~ 20 0
50 ESO 269-61 GiC 13 11 01.806 -44 35 33.06   13.97   12.49 13.0 ~ 38 0
51 ESO 444-21 GiC 13 23 30.645 -30 06 51.31   15.60   14.81   ~ 52 0
52 ESO 444-22 EmG 13 23 44.4723214584 -27 59 32.162864964   15.21   14.65   ~ 14 0
53 ESO 382-58 GiG 13 25 12.5389697544 -33 39 19.836855972   14.39   12.94   ~ 41 0
54 ESO 444-47 GiC 13 28 24.972 -31 51 27.82   14.82   13.83 14.3 ~ 61 0
55 ESO 444-86 EmG 13 37 57.3985339272 -30 55 53.668133724   14.47   13.28   ~ 43 0
56 IC 4315 G 13 40 03.175 -25 28 28.22   14.99   13.94   ~ 36 0
57 NGC 5298 GiG 13 48 36.5116411848 -30 25 42.397936320   13.83 13.09 12.25   ~ 64 0
58 ESO 383-88 GiG 13 49 33.4711209000 -33 04 08.292025956   14.19   13.02   ~ 44 0
59 ESO 445-58 EmG 13 51 19.6646329920 -31 08 52.421927892   13.88   12.61 13.1 ~ 43 0
60 ESO 445-81 EmG 13 56 34.860 -32 37 47.14   14.25   12.96   ~ 46 0
61 UGC 9019 G 14 06 15.0557489328 +20 08 28.360889520   15.4       ~ 23 0
62 UGC 9121 GiG 14 15 11.7454725480 +15 44 31.475850468   14.8       ~ 36 0
63 NGC 5676 GiG 14 32 46.853 +49 27 28.11   11.7       ~ 246 1
64 UGC 9479 GiG 14 42 32.6330996184 +04 25 49.712683944   14.77       ~ 29 1
65 UGC 9598 AGN 14 55 09.0556033080 +43 49 06.854347920   15.00       ~ 71 0
66 NGC 5879 AGN 15 09 46.7271710112 +57 00 00.538947900   11.9       ~ 239 1
67 IC 1111 LIN 15 16 00.9256613496 +54 28 56.277433128   15.5       ~ 22 0
68 UGC 10062 G 15 51 11.8440193320 +21 56 33.521087400   15.2       ~ 27 0
69 LSB F583-4 LSB 15 52 12 +18 47.1           ~ 52 0
70 NGC 6016 EmG 15 55 54.8610424824 +26 57 59.419277496   15.1       ~ 40 0
71 UGC 10224 G 16 08 50.2393797456 +22 02 33.491180832   15.5       ~ 27 0
72 UGC 10545 GiC 16 46 52.9650146952 +34 24 36.154089936   15.1       ~ 36 0
73 IC 1231 GiG 16 46 59.0364934368 +58 25 23.279345616   13.846 13.203 12.705 12.175 ~ 56 0
74 UGC 10706 G 17 06 28.5203832480 +38 21 48.695539608   15.1       ~ 24 0
75 NGC 6376 AGN 17 25 19.182 +58 49 02.33   18.95 18.97 14.52   ~ 23 0
76 UGC 11076 G 17 58 51.7657480848 +34 00 21.427578288   14.8       ~ 23 0
77 UGC 11846 G 21 54 45.2143955256 +06 25 17.874882264   15.2       ~ 21 0
78 NGC 7339 rG 22 37 46.890 +23 47 12.02   13.1       ~ 128 0
79 UGC 12172 G 22 43 56.9524981968 +07 23 26.494923984   15.50       ~ 40 0
80 UGC 12564 G 23 22 47.5234137384 +22 56 12.757400988   15.3       ~ 25 0
81 NGC 7664 GiG 23 26 39.7787170248 +25 04 48.873107316   13.30       ~ 143 0

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2023.01.30-05:09:06

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