2012MNRAS.421.2580L

Query : 2012MNRAS.421.2580L

2012MNRAS.421.2580L - Mon. Not. R. Astron. Soc., 421, 2580-2592 (2012/April-2)

Made-to-measure galaxy models – II. Elliptical and lenticular galaxies.

LONG R.J. and MAO S.

Abstract (from CDS):

We take a sample of 24 elliptical and lenticular galaxies previously analysed by the SAURON project using three integral dynamical models created with Schwarzschild method, and re-analyse them using the made-to-measure (M2M) method of dynamical modelling. We obtain good agreement between the two methods in determining the dynamical mass-to-light ratios (M/L values) for the galaxies with over 80 per cent of ratios differing by <10 per cent and over 95 per cent differing by <20 per cent. We show that (M/L)M2M ≈ (M/L)Sch. For the global velocity dispersion anisotropy parameter δ, we find similar values but with fewer of the M2M models tangentially anisotropic by comparison with their SAURON Schwarzschild counterparts. Our investigation is the largest comparative application of the M2M method to date.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): methods: numerical - galaxies: elliptical and lenticular, cD - galaxies: kinematics and dynamics - galaxies: structure

Simbad objects: 26

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Number of rows : 26
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 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
2 NGC 524 GiP 01 24 47.7429545736 +09 32 20.089023900   11.5       ~ 494 1
3 NGC 821 AG? 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 592 0
4 NGC 2974 Sy2 09 42 33.2918467632 -03 41 57.038311068   12.19   10.77   ~ 463 0
5 NGC 3156 GiG 10 12 41.2457368824 +03 07 45.701284764   12.8       ~ 241 0
6 NGC 3377 GiP 10 47 42.400 +13 59 08.30 11.55 11.24 10.38     ~ 798 1
7 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1504 0
8 NGC 3414 GiC 10 51 16.2099174408 +27 58 30.297624852   12.1       ~ 353 0
9 NGC 3608 LIN 11 16 58.967 +18 08 54.71   11.7       ~ 527 0
10 NGC 4150 GiG 12 10 33.655 +30 24 05.35 12.72 12.44 11.64     ~ 331 2
11 NGC 4278 LIN 12 20 06.8242 +29 16 50.722 11.54 11.09 10.16     ~ 988 2
12 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
13 NGC 4458 GiP 12 28 57.5613938232 +13 14 30.946545276 13.27 12.93 12.07     ~ 429 2
14 NGC 4459 H2G 12 29 00.0329905416 +13 58 42.826603332   11.6       ~ 567 0
15 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 671 1
16 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
17 NGC 4526 GiC 12 34 03.02853 +07 41 56.9040   10.6       ~ 707 0
18 NGC 4550 GiP 12 35 30.5913588048 +12 13 14.921166792 12.97 12.56 11.68     ~ 558 1
19 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
20 M 59 GiG 12 42 02.2581375168 +11 38 48.909507756   11.0       ~ 721 0
21 NGC 4660 GiP 12 44 31.9814021280 +11 11 25.739106972   12.1       ~ 434 0
22 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 673 2
23 NGC 5845 GiG 15 06 00.7823239488 +01 38 01.704838596   13.8 11.20 12.06 9.94 ~ 403 0
24 NGC 5846A GiP 15 06 29.2023813744 +01 35 41.627266512   14.1 13.37 13.07 12.1 ~ 125 0
25 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
26 NGC 7457 AG? 23 00 59.9263288440 +30 08 41.764398792   11.04 11.87     ~ 459 0

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