A Differential Spectroscopic Analysis of 16 Cygni A and B | Zendy

Chris Laws | Zendy; Guillermo González | Zendy

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A Differential Spectroscopic Analysis of 16 Cygni A and B

Author(s) -

Chris Laws,

Guillermo González

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/320669

Subject(s) - metallicity , astrophysics , stars , physics , cluster (spacecraft) , spectral line , differential (mechanical device) , high resolution , open cluster , primary (astronomy) , noise (video) , astronomy , computer science , remote sensing , geography , artificial intelligence , thermodynamics , programming language , image (mathematics)

We utilize high-resolution, high signal-to-noise spectra to perform adifferential analysis of Fe abundances in the common proper-motion pair 16 CygA and B. We confirm that both stars are slightly metal-rich compared to theSun, and we show for the first time that the primary is enhanced in Fe relativeto the secondary by a significant amount. We find Delta[Fe/H]=+0.025\pm0.009.This tends to support the ``self-pollution'' scenario proposed by Gonzalez(1998), though lack of a complete understanding of small primordial metallicityvariations among binaries and open cluster members prevents a definitiveconclusion

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