Table 1
Properties of the 16 compact stellar systems detected in HCG 22, ordered by R-band magnitude.
| ID | RA | Dec | vrad [km s-1] | R | Hβ [Å] | Mgb [Å] | ⟨ Fe ⟩ [Å] | [Fe/H] [dex] |
|
|
||||||||
| HCG22_UCD001 | 03h03m34s46 | −15°36′45′′8 | 2834 ± 27 | 12.7 | 0.62 ± 0.96 | 2.97 ± 0.97 | 2.40 ± 0.70 | −0.3 ± 0.3 |
| HCG22_UCD002 | 03h03m36s24 | −15°37′12′′8 | 2552 ± 78 | 5.1 | 3.22 ± 0.98 | 1.31 ± 1.04 | 2.18 ± 0.81 | −0.8 ± 0.5 |
| HCG22_UCD003 | 03h03m43s94 | −15°37′13′′0 | 2652 ± 92 | 4.6 | ||||
| HCG22_UCD004 | 03h03m44s62 | −15°37′43′′4 | 2668 ± 70 | 7.9 | 2.23 ± 1.47 | 5.91 ± 1.42 | 2.67 ± 1.03 | 0.1 ± 0.3 |
| HCG22_UCD005 | 03h03m40s79 | −15°36′57′′1 | 2665 ± 51 | 8.5 | 1.44 ± 1.06 | 3.10 ± 1.03 | 1.59 ± 0.84 | −0.5 ± 0.4 |
| HCG22_UCD006 | 03h03m40s74 | −15°37′25′′5 | 2654 ± 118 | 4.8 | ||||
| HCG22_UCD007 | 03h03m34s24 | −15°37′03′′2 | 2548 ± 218 | 4.0 | ||||
| HCG22_UCD008 | 03h03m35s04 | −15°37′30′′9 | 2944 ± 70 | 4.4 | ||||
| HCG22_UCD009 | 03h03m39s55 | −15°37′37′′8 | 2211 ± 74 | 5.9 | ||||
| HCG22_UCD010 | 03h03m32s66 | −15°38′29′′0 | 2755 ± 264 | 2.9 | ||||
| HCG22_UCD011 | 03h03m30s09 | −15°38′09′′0 | 2766 ± 95 | 4.3* | ||||
| HCG22_UCD012 | 03h03m36s32 | −15°37′15′′8 | 2549 ± 35 | 10.1 | 2.65 ± 1.62 | 7.53 ± 1.50 | 4.03 ± 1.18 | 0.4 ± 0.2 |
| HCG22_UCD013 | 03h03m44s93 | −15°36′54′′7 | 2646 ± 100 | 3.2 | ||||
| HCG22_UCD014 | 03h03m40s55 | −15°36′18′′7 | 2905 ± 114 | 2.8 | ||||
| HCG22_UCD015 | 03h03m40s18 | −15°37′00′′9 | 2789 ± 60 | 2.7 | ||||
| HCG22_UCD016 | 03h03m38s07 | −15°37′18′′6 | 2487 ± 128 | 3.1 | ||||
Notes. The fifth column gives the confidence level R of the cross-correlation radial velocity measurement, performed with the IRAF task fxcor. The last column gives a metallicity estimate for those sources with high enough S/N, i.e. an error of less than 0.5 dex.
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