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HD 132675


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Longterm Photometry of Variables at ESO - Part Two - the Second Data Catalogue 1986-1990
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1993A&AS..102...79S&db_key=AST

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.

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观测天体数据

星座:天燕座
右阿森松:15h05m10.83s
赤纬:-72°11'22.6"
视星:7.247
距离:170.648 天文距离
右阿森松适当运动:-19.6
赤纬适当运动:-22.7
B-T magnitude:8.332
V-T magnitude:7.337

目录:
适当名称   (Edit)
HD 1989HD 132675
TYCHO-2 2000TYC 9266-317-1
USNO-A2.0USNO-A2 0150-14399564
HIPHIP 73812

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