HST-ACS photometry of the isolated dwarf galaxy VV124=UGC 4879 - Detection of the blue horizontal branch and identification of two young star clusters

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Volume 533 (September 2011)

A&A, 533 (2011) A37

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Table 2

ratios for the candidate star clusters and their control fields.

Cluster Name	Cluster	CF_E	CF_N	CF_W	Min. Excess^c	Max. Excess^d

C1^a	0.84 ± 0.16	0.11 ± 0.04	0.13 ± 0.04	0.28 ± 0.06	3.3σ	4.4σ
C2^b	0.70 ± 0.16	0.22 ± 0.06	0.13 ± 0.04	0.29 ± 0.08	2.3σ	3.4σ

Notes.

^(a)

N_B is the number of stars having F606W − F814W ≤ 0.2 and 24.0 < F814W < 26.0, while N_R is the number of stars having F606W − F814W ≥ 0.4 in the same magnitude range.

^(b)

The definitions of N_B and N_R are the same as for C1, except for the magnitude range that is 22.0 < F814W < 26.0, in this case.

^(c)

Difference between the in the cluster and in the CF showing the lowest value of this parameter, in units of σ.

^(d)

Difference between the in the cluster and in the CF showing the highest value of this parameter, in units of σ.

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