Table 1.
Parameters of the new UDG candidates in the Hydra I cluster.
| Object | RA | Dec | Detection | Mr, 0 | (g − r)0 | M/Lr | M* | μe | μ0 | Re | n | χ2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| [deg] | [deg] | [mag] | [mag] | [107 M⊙] | [mag arcsec−2] | [mag arcsec−2] | [kpc] | |||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) |
| UDG 13 | 159.060384 | −27.507390 | V | −12.73 | 0.64 ± 0.30 | 2.00 ± 1.00 | 2.0 ± 1.0 | 27.35 ± 0.11 | 24.23 ± 0.20 | 1.60 ± 0.20 | 1.70 ± 0.06 | 6.3 |
| UDG 14 | 159.000949 | −27.544729 | A | −11.91 | 0.70 ± 0.30 | 2.00 ± 2.00 | 1.1 ± 0.8 | 28.50 ± 0.04 | 24.50 ± 0.50 | 1.83 ± 0.12 | 2.0 ± 0.2 | 1.1 |
| UDG 15 | 159.010624 | −27.605435 | V | −11.95 | 0.50 ± 0.30 | 1.20 ± 0.80 | 0.6 ± 0.4 | 27.70 ± 0.20 | 25.01 ± 0.30 | 1.51 ± 0.15 | 1.40 ± 0.10 | 11.0 |
| UDG 16 | 159.10242 | −27.235641 | V | −12.84 | 0.43 ± 0.20 | 1.00 ± 0.50 | 1.1 ± 0.5 | 27.63 ± 0.11 | 25.90 ± 0.20 | 1.75 ± 0.12 | 0.97 ± 0.09 | 1.0 |
| UDG 17 | 159.173845 | −27.277078 | V | −13.99 | 0.86 ± 0.11 | 4.00 ± 1.00 | 12 ± 3.0 | 26.70 ± 0.08 | 24.90 ± 0.10 | 1.50 ± 0.20 | 1.00 ± 0.10 | 1.6 |
| UDG 18 | 159.070065 | −27.338011 | V | −12.28 | 0.52 ± 0.20 | 1.30 ± 0.60 | 0.9 ± 0.4 | 27.60 ± 0.20 | 25.56 ± 0.19 | 1.64 ± 0.12 | 1.08 ± 0.03 | 1.7 |
| UDG 19 | 159.010682 | −27.290000 | V | −11.49 | 0.80 ± 0.20 | 3.00 ± 1.00 | 1.0 ± 0.5 | 28.50 ± 0.20 | 26.50 ± 0.30 | 1.98 ± 0.12 | 1.10 ± 0.13 | 1.1 |
| UDG 20 | 159.518455 | −27.497272 | A | −12.95 | 0.49 ± 0.05 | 1.20 ± 0.14 | 1.4 ± 0.2 | 27.33 ± 0.15 | 26.03 ± 0.33 | 1.97 ± 0.12 | 0.79 ± 0.12 | 1.4 |
| UDG 21 | 159.225691 | −27.615297 | A | −12.78 | 0.45 ± 0.10 | 1.00 ± 0.20 | 1.1 ± 0.3 | 27.30 ± 0.50 | 24.00 ± 0.40 | 1.50 ± 0.12 | 1.70 ± 0.15 | 1.5 |
| UDG 22 | 158.670717 | −27.700909 | A | −13.92 | 0.50 ± 0.05 | 1.23 ± 0.14 | 3.6 ± 0.4 | 26.50 ± 0.14 | 25.26 ± 0.18 | 3.60 ± 0.12 | 0.72 ± 0.08 | 1.0 |
| UDG 23 | 158.865410 | −27.771273 | A | −14.11 | 0.42 ± 0.02 | 0.96 ± 0.04 | 3.4 ± 0.2 | 27.20 ± 0.20 | 24.29 ± 0.30 | 2.47 ± 0.20 | 1.5 ± 0.14 | 6.0 |
Notes. Column 1 reports the name of the UDG candidate. In Cols. 2 and 3 we list the coordinates of the UDGs in J2000. In Col. 4 we report the kind of detection, i.e. visual inspection (flag “V”) or by the automatic tool (flag “A”). In Cols. 5 and 6 we report the total r-band magnitude and the average g − r color. Columns 7 and 8 give the stellar mass-to-light ratio derived in the r band and stellar mass, respectively. Columns 9–12 list the structural parameters derived from the 2D fit in the g band: the effective and central surface brightness, the effective radius in kpc and the n exponent of the Sérsic law, respectively. In Col. 13 we report the value of 
, which indicates the goodness of the fit of the surface brightness profiles. Magnitudes and colors are corrected for Galactic extinction using values from Schlafly & Finkbeiner (2011).
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