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HD 146212


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Ca II H and K Photometry on the UVBY System. III. The Metallicity Calibration for the Red Giants
New photometry on the uvby Ca system is presented for over 300 stars.When combined with previous data, the sample is used to calibrate themetallicity dependence of the hk index for cooler, evolved stars. Themetallicity scale is based upon the standardized merger of spectroscopicabundances from 38 studies since 1983, providing an overlap of 122evolved stars with the photometric catalog. The hk index producesreliable abundances for stars in the [Fe/H] range from -0.8 to -3.4,losing sensitivity among cooler stars due to saturation effects athigher [Fe/H], as expected.

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Observation and Astrometry data

Constellation:Serpens
Right ascension:16h15m14.93s
Declination:-02°20'05.4"
Apparent magnitude:8.603
Distance:348.432 parsecs
Proper motion RA:-11.7
Proper motion Dec:8.9
B-T magnitude:9.844
V-T magnitude:8.706

Catalogs and designations:
Proper Names
HD 1989HD 146212
TYCHO-2 2000TYC 5038-608-1
USNO-A2.0USNO-A2 0825-09215803
HIPHIP 79650

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