Testing the low-mass end of X-ray scaling relations with a sample of Chandra galaxy groups

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Volume 535 (November 2011)

A&A, 535 (2011) A105

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Table 5

Fit results selected by morphology and excluding cool core objects.

Relation (Y − X)	Sample	a	b	σ_tot (X)	σ_tot (Y)	σ_int (X)	σ_int (Y)

L_x − T	regular	2.34 ± 0.32	0.02 ± 0.16	0.128	0.300	0.126	0.294
	without CCs	2.03 ± 0.22	−0.13 ± 0.11	0.125	0.255	0.121	0.245
	all	2.25 ± 0.21	−0.02 ± 0.09	0.122	0.275	0.119	0.268

M₅₀₀ − T	regular	1.76 ± 0.29	0.19 ± 0.12	0.112	0.197	0.107	0.189
	without CCs	1.63 ± 0.24	0.14 ± 0.08	0.122	0.199	0.115	0.187
	all	1.68 ± 0.20	0.15 ± 0.07	0.104	0.176	0.098	0.165

L_x − M₅₀₀	regular	1.34 ± 0.19	−0.22 ± 0.11	0.222	0.298	0.211	0.283
	without CCs	1.25 ± 0.22	−0.31 ± 0.12	0.230	0.287	0.214	0.267
	all	1.34 ± 0.18	−0.21 ± 0.09	0.226	0.303	0.214	0.287

M₅₀₀ − Y_x,500	regular	0.55 ± 0.08	−0.63 ± 0.05	0.383	0.210	0.369	0.202
	without CCs	0.52 ± 0.07	−0.62 ± 0.06	0.374	0.196	0.351	0.184
	all	0.53 ± 0.06	−0.62 ± 0.05	0.369	0.194	0.350	0.184

f_g,500 − T	regular	1.45 ± 0.62	0.22 ± 0.26	0.203	0.294	0.198	0.286
	without CCs	1.18 ± 0.28	0.08 ± 0.11	0.218	0.258	0.209	0.247
	all	1.32 ± 0.32	0.11 ± 0.12	0.222	0.294	0.216	0.286

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