Metallicity Effects on RR Lyrae Variables | Zendy

G. Bono | Zendy; Roberta Incerpi | Zendy; M. Marconi | Zendy

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Metallicity Effects on RR Lyrae Variables

Author(s) -

G. Bono,

Roberta Incerpi,

M. Marconi

Publication year - 1996

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 - 10.1086/310207

Subject(s) - rr lyrae variable , metallicity , overtone , astrophysics , physics , luminosity , stars , variable star , observable , astronomy , spectral line , galaxy , globular cluster , quantum mechanics

The effects of heavy elements abundance on theoretical observables is studiedfor both fundamental and first overtone RR Lyrae pulsators at fixed mass andluminosity level. Nonlinear models have been computed adopting three differentmetal content. It has been found that the bolometric amplitude of firstovertone pulsators decreases as metallicity increases, whereas for fundamentalpulsators the amplitude is positively correlated with the metal abundance.Comment: postscript file of 14 pages and 4 figures; for any problem please write to bono@oat.ts.astro.i

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