Searching for chemical inhomogeneities in open clusters - Analysis of the CN and CH molecular band strengths in NGC 2158, NGC 2420, NGC 2682, NGC 7789, and Berkeley 29

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Table 2

Index measurements for the sample stars (excerpt).

Cluster	Plate^a	Fiber^a	RA	Dec	g	V	ID_phot^b	S3839_H	S3839_N	S4142	CH4300

NGC 2158	2912	409	6:07:10.96	+24:09:33.5	17.51		899	−0.50 ± 0.03	−0.28 ± 0.03	−0.32 ± 0.03	−0.48 ± 0.03
NGC 2158	2912	416	6:07:14.18	+24:08:08.8	17.53		919	−0.49 ± 0.03	−0.28 ± 0.03	−0.33 ± 0.03	−0.48 ± 0.03
NGC 2158	2912	417	6:07:14.25	+24:10:13.0	17.85		1143	−0.49 ± 0.04	−0.26 ± 0.04	−0.32 ± 0.04	−0.47 ± 0.04

Notes.

^(a)

Plate and fiber uniquely identify the spectrum used in the analysis for each star in the SDSS III database.

^(b)

ID_phot identifies the star in the photometry used.

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