Table 1.
LEWIS sample: UDG and LSB galaxies in the Hydra I cluster.
| Object | RA | Dec | Mr | M* | μe | μ0 | Re | NGC | Obs. status | Exp. time | Vsys |
|---|---|---|---|---|---|---|---|---|---|---|---|
| [J2000] | [J2000] | [mag] | [108 M⊙] | [mag arcsec−2] | [mag arcsec−2] | [kpc] | [h] | [km s−1] | |||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) |
| UDG 1 | 10:37:54.12 | −27:09:37.50 | −15.48 | 1.12 | 25.2 ± 0.1 | 24.2 ± 0.1 | 1.75 ± 0.12 | 0 ± 1 | C | 2.00 | 4219 ± 9 |
| UDG 2 | 10:37:34.89 | −27:10:29.94 | −14.27 | 0.55 | 26.2 ± 0.1 | 25.0 ± 0.1 | 1.55 ± 0.12 | 7 ± 3 | P | 1.33 | – |
| UDG 3 | 10:36:58.63 | −27:08:10.21 | −14.70 | 1.65 | 26.1 ± 0.2 | 25.2 ± 0.2 | 1.88 ± 0.12 | 15 ± 6 | C | 3.00 | 3550 ± 26 |
| UDG 4 | 10:37:02.64 | −27:12:15.01 | −16.03 | 10.6 | 25.8 ± 0.1 | 24.9 ± 0.1 | 2.64 ± 0.12 | 2 ± 1 | C | 2.00 | 2317 ± 13 |
| UDG 5 | 10:36:07.68 | −27:19:03.26 | −14.66 | 1.16 | 25.3 ± 0.3 | 23.7 ± 0.3 | 1.42 ± 0.12 | 0 ± 1 | S | – | – |
| UDG 6 | 10:36:35.80 | −27:19:36.12 | −14.38 | 0.32 | 25.3 ± 0.1 | 24.1 ± 0.1 | 1.37 ± 0.12 | 0 ± 1 | P | 0.75 | – |
| UDG 7 | 10:36:37.16 | −27:22:54.93 | −13.72 | 0.49 | 26.9 ± 0.4 | 24.4 ± 0.4 | 1.66 ± 0.12 | 3 ± 1 | C | 3.80 | 4134 ± 28 |
| UDG 8 | 10:38:14.59 | −27:24:27.07 | −14.87 | 0.53 | 25.0 ± 0.6 | 23.2 ± 0.6 | 1.40 ± 0.12 | 0 ± 1 | P | 0.75 | 4793 ± 16 |
| UDG 9 | 10:37:22.85 | −27:36:02.80 | −15.16 | 1.78 | 26.8 ± 0.2 | 24.2 ± 0.2 | 3.46 ± 0.12 | 7 ± 1 | C | 3.90 | 4302 ± 13 |
| UDG 10 | 10:35:27.32 | −27:33:03.86 | −13.89 | 0.26 | 27.3 ± 0.3 | 24.3 ± 0.3 | 2.29 ± 0.10 | 0 ± 1 | C | 3.85 | 3577 ± 139 |
| UDG 11 | 10:34:59.55 | −27:25:37.95 | −14.75 | 0.63 | 25.7 ± 0.1 | 24.4 ± 0.1 | 1.66 ± 0.12 | 7 ± 3 | C | 6.10 | 3507 ± 3 |
| UDG 12 | 10:36:45.55 | −27:48:12.73 | −14.30 | 1.19 | 26.2 ± 0.2 | 25.1 ± 0.2 | 1.64 ± 0.12 | 0 ± 1 | P | 1.50 | 4615 ± 13 |
| UDG 13 | 10:36:14.49 | −27:30:26.60 | −12.73 | 0.20 | 27.3 ± 0.1 | 24.2 ± 0.2 | 1.60 ± 0.20 | – | C | 3.93 | 3438 ± 52 |
| UDG 15 | 10:36:02.55 | −27:36:19.57 | −11.95 | 0.06 | 27.7 ± 0.2 | 25.0 ± 0.3 | 1.51 ± 0.15 | 2 ± 3 | C | 4.68 | 3553 ± 88 |
| UDG 16 | 10:36:25.30 | −27:14:14.74 | −12.84 | 0.11 | 27.6 ± 0.1 | 25.9 ± 0.2 | 1.75 ± 0.12 | – | S | – | – |
| UDG 17 | 10:36:41.72 | −27:16:37.48 | −13.99 | 1.20 | 26.7 ± 0.1 | 24.9 ± 0.1 | 1.50 ± 0.20 | 3 ± 3 | P | 1.50 | – |
| UDG 18 | 10:36:16.82 | −27:20:16.84 | −12.28 | 0.09 | 27.6 ± 0.2 | 25.6 ± 0.2 | 1.64 ± 0.12 | 11 ± 7 | C | 4.70 | – |
| UDG 20 | 10:38:04.43 | −27:29:50.18 | −12.95 | 0.14 | 27.3 ± 0.1 | 26.0 ± 0.3 | 1.97 ± 0.12 | – | C | 3.88 | 4693 ± 12 |
| UDG 21 | 10:36:54.17 | −27:36:55.07 | −12.78 | 0.11 | 27.3 ± 0.5 | 24.0 ± 0.4 | 1.50 ± 0.12 | – | C | 3.88 | 3489 ± 22 |
| UDG 22 | 10:34:40.97 | −27:42:03.27 | −13.92 | 0.36 | 26.5 ± 0.1 | 25.3 ± 0.2 | 3.60 ± 0.12 | – | P | 1.50 | 5198 ± 5 |
| UDG 23 | 10:35:27.70 | −27:46:16.58 | −14.11 | 0.34 | 27.2 ± 0.2 | 24.3 ± 0.3 | 2.47 ± 0.20 | – | C | 2.10 | 3496 ± 33 |
| UDG 32 | 10:37:04.20 | −27:42:53.92 | −14.65 | 8.00 | 27.5 ± 1.0 | 26.2 ± 1.0 | 3.80 ± 1.00 | 7 ± 4 | C | 5.00 | – |
| LSB 1 | 10:36:00.03 | −27:28:58.17 | −12.38 | 0.06 | 26.6 ± 0.1 | 23.9 ± 0.2 | 0.81 ± 0.90 | – | S | – | – |
| LSB 2 | 10:36:09.65 | −27:30:51.61 | −12.87 | 0.15 | 25.8 ± 0.1 | 23.8 ± 0.1 | 0.57 ± 0.12 | – | P | 0.75 | – |
| LSB 3 | 10:36:26.55 | −27:32:41.61 | −12.03 | 0.05 | 26.6 ± 0.8 | 23.7 ± 0.6 | 0.70 ± 0.12 | – | S | – | – |
| LSB 4 | 10:36:19.71 | −27:13:41.68 | −13.83 | 0.25 | 26.5 ± 0.1 | 24.7 ± 0.1 | 1.48 ± 0.12 | 8 ± 3 | C | 3.00 | 3420 ± 44 |
| LSB 5 | 10:36:41.26 | −27:48:20.54 | −13.74 | 0.40 | 25.8 ± 0.1 | 23.9 ± 0.1 | 1.42 ± 0.12 | – | P | 0.75 | 3439 ± 40 |
| LSB 6 | 10:38:04.67 | −27:32:44.99 | −15.47 | 1.84 | 26.0 ± 0.1 | 23.0 ± 0.2 | 4.00 ± 1.00 | 2 ± 1 | C | 2.30 | 5193 ± 5 |
| LSB 7 | 10:36:18.70 | −27:37:17.93 | −15.68 | 2.59 | 25.3 ± 0.1 | 22.7 ± 0.1 | 1.97 ± 0.10 | – | P | 0.75 | 3551 ± 11 |
| LSB 8 | 10:37:54.47 | −27:15:31.12 | −15.27 | 1.44 | 25.1 ± 0.1 | 23.2 ± 0.2 | 1.51 ± 0.20 | – | P | 0.75 | 2718 ± 5 |
Notes. Column 1 reports the name of the target in the LEWIS sample. Columns 2 and 3 list the coordinates. Columns 4 and 5 report the total r-band magnitude and stellar mass, respectively, derived from the r-band image. Columns 6–8 list the structural parameters in the g band published by Iodice et al. (2020) and La Marca et al. (2022a): effective surface brightness, central surface brightness, and effective radius in kpc, respectively. Magnitudes and colours are corrected for Galactic extinction using values from Schlegel et al. (1998). Column 9 reports the total number of GCs, which is statistically estimated from photometric data within 1.5Re and corrected for photometric and spatial incompleteness (Iodice et al. 2020; La Marca et al. 2022a). Column 10 reports the status of the data acquisition until May 2023: C for completed, P for partially completed, and S for scheduled. The total integration time in hours is listed in Col. 11. Missing values are for those targets that are either not fully observed yet or are pending final analysis. Their velocities will be reported in a future paper. In Col. 12 we report the systemic velocity derived in this work. Missing values are for those targets that have not yet been observed.
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