Properties of the two galaxies with tails.
|Variable||ID 345||ID 473|
|Vgal − VCGr32||−824 km s−1||−1903 km s−1|
|R(a)||201 kpc||222 kpc|
|Mstar||2.0 × 1010 M⊙||∼1010 M⊙|
|Mdyn(b)||1.0 × 1011 M⊙||9.7 × 1010 M⊙|
|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|
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.
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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