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HD 24766


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The chemical evolution of the solar neighborhood. I - A bias-free reduction technique and data sample
The possible ways of measuring the age-metallicity relation for thegalactic disk in the neighborhood of the sun are discussed. It is shownthat the use of a field star sample chosen on the basis of effectivetemperature introduces a bias which results in a monotonic increase inthe metal abundance of the disk with time. However, if theage-metallicity relation for the disk can be shown to satisfy certaincriteria, the bias introduced in such a sample can be neglected: thegalactic disk apparently satisfies the criteria. It is concluded that asample analyzed through the use of uvby and H(beta) photometry inconjunction with a self-consistent set of theoretical isochronesprovides the least biased, most accurate estimate of the age-metallicityrelation for the disk.

Photoelectric measures of the 4430 A diffuse interstellar band
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1963MNRAS.125..141W&db_key=AST

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Observation and Astrometry data

Constellation:Éridan
Right ascension:03h54m44.37s
Declination:-38°02'20.5"
Apparent magnitude:8.859
Distance:666.667 parsecs
Proper motion RA:13.5
Proper motion Dec:7.6
B-T magnitude:10.172
V-T magnitude:8.968

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 24766
TYCHO-2 2000TYC 7570-1199-1
USNO-A2.0USNO-A2 0450-01336947
HIPHIP 18294

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