RX J1548.9+0851, a fossil cluster? | Astronomy & Astrophysics (A&A)

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Table 2

Luminosity weighted dynamical properties of the RX J1548.9+0851 system.

(1)	(2)	(3)

Mean radial velocity		20 731 km s^-1
Velocity dispersion		568 km s^-1
Harmonic radius		388 kpc
Virial radius		609 kpc
Crossing time		0.68 Gyr
Virial mass		1.37 × 10¹⁴ M_⊙
Projected mass		3.70 × 10¹⁴ M_⊙
Mean mass		2.5 ± 0.8 × 10¹⁴ M_⊙

Notes. Velocities are given in km s^-1, radii in kpc, masses in 10¹⁴ M_⊙, and the crossing time in Gyr.

⁽¹⁾

Description.

⁽²⁾

Dynamical formulae.

⁽³⁾

Calculations for all spectroscopically confirmed members within 1 Mpc including redshifts from literature (N = 54).

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