Table 1: Properties of the spectroscopically investigated UCD candidates in Abell 1689. "CG'' in the comment column stands for "compact galaxy''. The spectrum of candidate 4 is partially contaminated by a neighbouring irregular galaxy with unkown redshift, see Fig. 1, showing several weak cross-correlation peaks within 0<z<0.30. The spectrum of candidate is partially contaminated by a dwarf galaxy member of Abell 1689, see Fig. 1, showing several weak cross-correlation peaks within 0.15<z<0.20.
Candidate RA[2000] Dec[2000] i (g-i) $z_{\rm spec}$ Comment

1 13:11:32.75 -01:19:48.9 22.18 1.64 0.1859 $\pm$ 0.0008 new name: CG $_{\rm A1689,1}$

2 13:11:29.90 -01:19:22.5 22.38 1.75 75 $\pm$ 260 km s^-1 Star

3 13:11:33.11 -01:20:05.5 22.77 1.74 0.2014 $\pm$ 0.0007 new name: CG $_{\rm A1689,2}$

4 13:11:31.09 -01:21:14.8 23.24 1.51 $0.00<z_{\rm spec}<0.30$ Possible member (weak, blended)

5 13:11:25.73 -01:21:42.1 23.80 1.67 $0.15<z_{\rm spec}<0.20$ Possible member (weak, blended)

**Table 1:** Properties of the spectroscopically investigated UCD candidates in Abell 1689. "CG'' in the comment column stands for "compact galaxy''. The spectrum of candidate 4 is partially contaminated by a neighbouring irregular galaxy with unkown redshift, see Fig. 1, showing several weak cross-correlation peaks within 0<z<0.30. The spectrum of candidate is partially contaminated by a dwarf galaxy member of Abell 1689, see Fig. 1, showing several weak cross-correlation peaks within 0.15<z<0.20.
Candidate	RA[2000]	Dec[2000]	i	(g-i)	$z_{\rm spec}$	Comment
1	13:11:32.75	-01:19:48.9	22.18	1.64	0.1859 $\pm$ 0.0008	new name: CG $_{\rm A1689,1}$
2	13:11:29.90	-01:19:22.5	22.38	1.75	75 $\pm$ 260 km s^-1	Star
3	13:11:33.11	-01:20:05.5	22.77	1.74	0.2014 $\pm$ 0.0007	new name: CG $_{\rm A1689,2}$
4	13:11:31.09	-01:21:14.8	23.24	1.51	$0.00<z_{\rm spec}<0.30$	Possible member (weak, blended)
5	13:11:25.73	-01:21:42.1	23.80	1.67	$0.15<z_{\rm spec}<0.20$	Possible member (weak, blended)

Source LaTeX | All tables | In the text

	1 Introduction
	2 Spectroscopic results
	3 Comparison between M 32 and compact galaxies in Abell 1689
	4 Discussion and conclusions
	References