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On the Use of Field RR Lyrae As Galactic Probes. II. A New ΔS Calibration to Estimate Their Metallicity

J. Crestani,M. Fabrizio,V. F. Braga,C. Sneden,G. Preston,I. Ferraro,G. Iannicola,G. Bono,A. Alves-Brito,M. Nonino,V. D'Orazi,L. Inno,M. Monelli,J. Storm,G. Altavilla,B. Chaboyer,M. Dall'Ora,G. Fiorentino,C. Gilligan,E. K. Grebel,H. Lala,B. Lemasle,M. Marengo,S. Marinoni,P. M. Marrese,C. E. Martinez-Vazquez,N. Matsunaga,J. P. Mullen,J. Neeley,Z. Prudil,R. da Silva,P. B. Stetson,F. Thevenin,E. Valenti,A. Walker,M. Zoccali

ASTROPHYSICAL JOURNAL（2021）

Cited 39|Views80
Key words
RR Lyrae variable stars,Milky Way stellar halo,High resolution spectroscopy,Metallicity
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