Abstract
'Primary' (Fe/H) averages are presented for 373 evolved K stars of luminosity classes II-IV and (Fe/H) values beween .9 and +0.21 dex. The data define a 'consensus' zero point with a precision of + or {minus} 0.018 dex and have rms errors per datum which are typically 0.08{minus}0.16 dex. The primary data base makes recalibration possible for the large (Fe/H) catalogs of Hansen and Kjaergaard (1971) and Brown et al. (1989). A set of (Fe/H) standard stars and a new DDO calibration are given which have rms of 0.07 dex or less for the standard star data. For normal K giants, CN-based values of (Fe/H) turn out to be more precise than many high-dispersion results. Some zero-point errors in the latter are also found and new examples of continuum-placement problems appear. Thus high-dispersion results are not invariably superior to photometric metallicities. A review of high-dispersion and related work on supermetallicity in K III-IV star is also given.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
