Abundance Homogeneity and Absolute Magnitudes of the Hyades Moving Group

descriptionPublicationkeyboard_double_arrow_right Article 01 Oct 1968 English Publisher:IOP PublishingJournal:Publications of the Astronomical Society of the Pacific, volume 80, page 578 (issn: 0004-6280, eissn: 1538-3873,

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Authors: Michel Breger;

doi: 10.1086/128692

Abundance Homogeneity and Absolute Magnitudes of the Hyades Moving Group

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Abstract

The Hyades moving group shows a distribution of rri' metal-abundance indices intermediate between the Hyades-cluster and field-star distributions, indicating a mixture of both. Group parallaxes give a mean absolute magnitude brighter by 0φ3 than is obtained from the Stromgren Ci index, while for the Hyades cluster the agreement is very good. Several possible reasons for this are discussed. It is recommended that membership in moving groups should not be used to obtain absolute magnitudes for any individual star.

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