The ESO-VLT MIKiS survey reloaded: The internal kinematics of the core of M75

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Table 3.

Parameters of M75 determined in this work.

Parameter	Estimated value
Color excess	E(B − V) = 0.17 ± 0.02
Distance modulus	(m − M)₀ = 16.64 ± 0.05
Cluster distance	d = 21.3 ± 0.5 kpc
Age	11.0 ± 0.4 Gyr
Dimensionless central potential	W₀ = 7.85 ± 0.1
Concentration parameter	c = 1.79 ± 0.03
Core radius	$r_{c} = {4.90}^{″}_{- 0.3}^{+ 0.4}$ $r_{\mathrm{c}}={{4.90^{\prime\prime}}}^{+0.4}_{-0.3}$
Half-mass radius	$r_{h} = {32.3}^{″}_{- 1.0}^{+ 1.2}$ $r_{\mathrm{h}}={{32.3^{\prime\prime}}}_{-1.0}^{+1.2}$
Tidal radius	$r_{t} = {309.5}^{″}_{- 10.7}^{+ 11.9}$ $r_{\mathrm{t}}={{309.5^{\prime\prime}}}_{-10.7}^{+11.9}$
Systemic velocity	V_sys = −189.5 ± 0.3 km s⁻¹
Central velocity dispersion	σ₀ = 8.8 ± 0.3 km s⁻¹
Total mass	M = 2.5 ± 0.2 × 10⁵ M_⊙

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