Surface term effects on mass estimators | Astronomy & Astrophysics (A&A)

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Table 1

Some properties of neighbouring galaxy groups.

Parameter	Units	Milky Way	M 31	M 81	NGC 2403	Cen A	M 83	IC 342	Maffei	Sculptor	CVn I

N	–	15	19	25	5	28	14	8	8	6	9
	10¹¹ M_⊙	1.47	2.91	1.81	0.41	6.09	0.93	1.10	0.46	1.32	0.72
	10¹¹ M_⊙	1.41	2.70	1.66	0.37	5.37	0.91	1.00	0.37	1.07	0.46
	km s^-1	75.7	77.0	68.4	22.6	105.0	71.1	53.8	58.2	54.4	56.0
R _s	Mpc	0.696	0.824	0.520	0.484	0.634	0.531	0.741	0.294	0.710	0.602
[R]	Mpc	0.199	0.280	0.196	0.448	0.363	0.208	0.417	0.134	0.438	0.518
[R_⊥]	Mpc	0.156	0.220	0.154	0.352	0.285	0.163	0.328	0.105	0.344	0.407
	Mpc²	0.052	0.092	0.040	0.131	0.101	0.038	0.145	0.015	0.122	0.178
	Mpc³	0.024	0.052	0.014	0.051	0.041	0.011	0.069	0.002	0.049	0.827
	Mpc km² s^-2	819	816	839	197	2390	818	931	128	1259	1283
[R_H]_PM	Mpc	0.107	0.065	0.088	0.507	0.292	0.140	0.123	0.117	0.522	0.583
[R_H]_MG	Mpc	0.110	0.068	0.092	0.542	0.311	0.142	0.130	0.132	0.588	0.735
[R_H]_EM	Mpc	0.214	0.130	0.176	1.014	0.584	0.280	0.246	0.234	1.044	1.166
[R_H]_K	Mpc	0.230	0.138	0.184	1.268	0.605	0.301	0.282	0.268	1.254	1.312
[α]_MG	–	0.979	0.961	0.956	0.936	0.939	0.987	0.952	0.888	0.888	0.793
[t_crossH₀]	–	0.187	0.258	0.204	1.408	0.245	0.208	0.550	0.164	0.572	0.656

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