RR Lyrae in LMC Globular Clusters: Insights into the Oosterhoff ...

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Other Clusters3 clusters included in the OGLE III Catalog of Variable Stars NCG 1754 NGC 1786KuehnOGLERRab 17 20RRc 5 15Many additional candidate RR LyraeRRab 19 28RRc 17 18RRd 3 9RRcand 10 0 NGC 2210*RRab 33 34RRc 14 21RRd 4 0* Work done in conjunction with Young-Beom Jeon, James M. Nemec, & AlistairR. Walker. Preliminary results in (Jeon et al. 2009)
Fourier Decomposition Lightcurves fit with fourier series Mag = A 0 + ΣA j sin(jωt + φ j + Φ) RRab stars are traditionally fit with a sineseries while RRc stars are fit with a cosineseries Fourier coefficients give us properties ofthe stars φ ij = jφ i – iφ j R ij = A i /A j
Page 1 and 2: RR Lyrae in LMC Globular Clusters:I
Page 3 and 4: MW Inner 100kpc
Page 5 and 6: Bailey Types Based on shape oflight
Page 7 and 8: The Oosterhoff dichotomy poses stro
Page 10 and 11: Target Objects 5 LMC globular clust
Page 14 and 15: NGC 1466 Periods accurate to betwee
Page 16 and 17: NGC 1466
Page 18 and 19: Reticulum Previously searched by Wa
Page 22 and 23: Fourier Fits
Page 24 and 25: Fourier Derived Parameters RRab sta
Page 26 and 27: Trends in Fourier Parameters vs Clu
Page 28 and 29: Trends in Fourier Parameters vs Clu
Page 30 and 31: Summary The processes that created
Page 32 and 33: Are All Oo-Int Systems Equal?Draco

RR Lyrae in LMC Globular Clusters: Insights into the Oosterhoff ...

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