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Table 2.

Properties of the two galaxies with tails.

Variable ID 345 ID 473
RA (J2000) 149°55′8.6″ 149°55′9.7″
Dec (J2000) 2°31′41.2″ 2°31′44.6″
Vgal − VCGr32 −824 km s−1 −1903 km s−1
R(a) 201 kpc 222 kpc
Mstar 2.0 × 1010M ∼1010M
Mdyn(b) 1.0 × 1011M 9.7 × 1010M
σ 131 ± 48 km s−1 41 ± 34 km s−1
SFR 38 M yr−1(c) 10 − 24 M yr−1(d)
tail proj. length 97 kpc 34 kpc
tail proj. width 21 kpc 15 kpc
f([O II])tail 113.4 ± 2.3 × 10−18 26.4 ± 1.2 × 10−18
erg s−1 cm−2 erg s−1 cm−2



Projected distance from the cluster centre.


Dynamical masses were estimated using the extent measured in the [O II] distribution, and the velocity amplitude of a rotating disc model, which takes into account the beam smearing as done in Contini et al. (2016). The velocity dispersion was corrected for beam smearing and for the instrumental spectral resolution.


Possibly overestimated due to the presence of an AGN.


The first value has been measured from the Hβ line using a dust attenuation estimate derived from the Balmer decrement, the second one has been derived from the observed [O II] line using the calibration of Moustakas et al. (2006).

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