Table A.1 is only available in electronic form at the CDS via anonymous ftp cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/379/54 and Tables 2-4 are also available in electronic form at the CDS. Full Fig. 5 is only available in electronic form at the http://www.edpsciences.org

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Based on data obtained at the 2.1 m telescope of the Observatorio Guillermo Haro at Cananea, Sonora, México, operated by the Instituto Nacional de Astrofísica, Optica y Electrónica.

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... IRAF

The IRAF package is written and supported by the IRAF programming group at the National Optical Astronomy Observatories (NOAO) in Tucson, Arizona. NOAO is operated by the Association of Universities for Research in Astronomy (AURA), Inc. under cooperative agreement with the National Science Foundation (NSF).

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