Metallicity of Galactic RR Lyrae from Optical and Infrared Light Curves. I. Period–Fourier–Metallicity Relations for Fundamental-mode RR Lyrae

@article{Mullen2021MetallicityOG,
  title={Metallicity of Galactic RR Lyrae from Optical and Infrared Light Curves. I. Period–Fourier–Metallicity Relations for Fundamental-mode RR Lyrae},
  author={J. P. Mullen and Massimo Marengo and Clara E. Mart{\'i}nez-V{\'a}zquez and Jillian R. Neeley and Giuseppe Bono and M. Dall’ora and Brian Chaboyer and Fr'ed'eric Th'evenin and Vittorio F. Braga and Juliana Crestani and Michele Fabrizio and Giuliana Fiorentino and Christina K. Gilligan and Matteo Monelli and Peter B. Stetson},
  journal={The Astrophysical Journal},
  year={2021},
  volume={912}
}
We present newly calibrated period–ϕ 31–[Fe/H] relations for fundamental-mode RR Lyrae stars in the optical and, for the first time, mid-infrared. This work’s calibration data set provides the largest and most comprehensive span of parameter space to date, with homogeneous metallicities from −3 ≲ [Fe/H] ≲ 0.4 and accurate Fourier parameters derived from 1980 ASAS-SN (V band) and 1083 WISE (NEOWISE extension, W1 and W2 bands) RR Lyrae stars with well-sampled light curves. We compare our optical… Expand
3 Citations
Metallicity Estimation of RR Lyrae Stars From Their I-Band Light Curves
We have revisited the problem of metallicity prediction of RR Lyrae stars from their near-infrared light curves in the Cousins I wave band. Our study is based on high-quality time series photometryExpand
On the Use of Field RR Lyrae as Galactic Probes. V. Optical and Radial Velocity Curve Templates
We collected the largest spectroscopic catalog of RR Lyrae (RRLs) including ≈20,000 high-, medium-, and low-resolution spectra for ≈10,000 RRLs. We provide the analytical forms of radial velocityExpand
Variable Stars in Local Group Galaxies. VI. The Isolated Dwarfs VV 124 and KKr 25
  • Jillian R. Neeley, Matteo Monelli, +10 authors Ata Sarajedini
  • Physics
  • The Astrophysical Journal
  • 2021
We present the discovery of variable stars in two isolated dwarf galaxies in the outskirts of the Local Group, VV 124 and KKr 25, using observations with the Hubble Space Telescope. VV 124 hostsExpand

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