Table 3.
Properties of the components of the RXCJ1230.7+3439 cluster system.
| Centre | South-west | East | |
|---|---|---|---|
| RA | 12 30 45 | 12 30 29.7 | 12 30 59.5 |
| Dec | +34 39 07 | +34 37 50 | +34 39 21 |
| Spec. z | 0.3324 | 0.3295 | 0.3306 |
| BCG z(a) | 0.3337 | 0.3269 | 0.3383 |
| X-ray z | 0.33 ± 0.01 | – | 0.3 ± 0.05 |
| σv | 999 ± 160 | 792 ± 230 | < 400 |
| FX | 7.2 ± 0.15 | 2.4 ± 0.4 | 1.2 ± 0.15 |
| LX | 2.4 ± 0.05 | 0.77 ± 0.14 | 0.40 ± 0.05 |
| TX | 4.65 ± 0.4 | 4.4 ± 0.6 |
 |
| Mgas | 0.44 | 0.20 | 0.1 |
| rc | 0.45 | 0.30 | 0.26 |
| β | 0.48 | 0.36 | 0.28 |
Notes. The columns give the following parameters: RA and Dec are for the epoch J2000, spec. z is the mean of the spectroscopic redshifts of cluster galaxies (Barrena et al. 2022), BCG z is the spectroscopic redshift of the BCG at the centre, X-ray z is the redshift obtained from X-ray spectroscopy of the intracluster plasma, and σv is the velocity dispersion from Barrena et al. (2022). FX is the unabsorbed X-ray flux in the 0.5–2 keV energy band in units of 10−13 erg s−1 cm−2, LX is the k-corrected X-ray luminosity in the 0.5–2 keV energy band in units of 1044 erg s−1, TX is the mean temperature of the component determined from X-ray spectroscopy in units of keV, Mgas is the gas mass inside r500 in units of 1014 M⊙, rc is the core radius of the ICM in arcmin, and β the parameter of the gas density profile slope.
The first two BCG redshifts are from Barrena et al. (2022) and they are identical to those from the SDSS data release 13 (2016). The last BCG redshift is from SDSS.
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