J/ApJ/912/144 Metallicity of Gal. RR Lyrae from opt. & IR LCs (Mullen+, 2021)
Metallicity of Galactic RR Lyrae from optical and infrared light curves.
I. Period-Fourier-Metallicity relations for fundamental-mode RR Lyrae.
Mullen J.P., Marengo M., Martinez-Vazquez C.E., Neeley J.R., Bono G.,
Dall'Ora M., Chaboyer B., Thevenin F., Braga V.F., Crestani J., Fabrizio M.,
Fiorentino G., Gilligan C.K., Monelli M., Stetson P.B.
<Astrophys. J., 912, 144 (2021)>
=2021ApJ...912..144M 2021ApJ...912..144M
ADC_Keywords: Stars, variable; Abundances, [Fe/H]; Infrared; Optical; Photometry
Keywords: RR Lyrae variable stars ; RRab variable stars ;
Pulsating variable stars ; Globular star clusters ; Metallicity
Abstract:
We present newly calibrated period-φ31-[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 period-φ31-[Fe/H] relation with
those available in the literature and demonstrate that our relation
minimizes systematic trends in the lower and higher metallicity range.
Moreover, a direct comparison shows that our optical photometric
metallicities are consistent with both those from high-resolution
spectroscopy and globular clusters, supporting the good performance of
our relation. We found an intrinsic scatter in the photometric
metallicities (0.41dex in the V band and 0.50dex in the infrared) by
utilizing large calibration data sets covering a broad metallicity
range. This scatter becomes smaller when optical and infrared bands
are used together (0.37dex). Overall, the relations derived in this
work have many potential applications, including large-area
photometric surveys with James Webb Space Telescope in the infrared
and LSST in the optical.
Description:
In this work, we take advantage of both the large sample of
homogeneous HR [Fe/H] abundances in Crestani+ 2021, J/ApJ/908/20 (C21)
and apply the ΔS calibration of C21 to the full
medium-resolution LAMOST DR6 and SDSS-SEGUE data sets to build an
extensive HR+ΔS metallicity catalog. We have cross-matched the
variables in the HR+ΔS metallicity catalog with well-sampled
photometric time series in the All-Sky Automated Survey for Supernovae
(ASAS-SN; Shappee+ 2014, J/ApJ/788/48 & Jayasinghe+ 2018MNRAS.477.3145J 2018MNRAS.477.3145J)
and the Near-Earth Objects reactivation mission (NEOWISE;
Mainzer+ 2011ApJ...731...53M 2011ApJ...731...53M) of the Wide-field Infrared Survey
Explorer (WISE; Wright+ 2010AJ....140.1868W 2010AJ....140.1868W).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 58 2096 Derived photometric properties
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See also:
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
V/156 : LAMOST DR7 catalogs (Luo+, 2019)
V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020)
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
J/AJ/110/2319 : Abundances in RR Lyr variables (Clementini+ 1995)
J/A+A/312/111 : [Fe/H] from RR Lyrae light curves (Jurcsik+, 1996)
J/AJ/128/2239 : JHKs photometry of 92 LMC Cepheids (Persson+, 2004)
J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009)
J/ApJS/197/29 : Chemical compositions of 11 RR Lyrae (For+, 2011)
J/MNRAS/415/1366 : OGLE RR Lyrae in SMC (Kapakos+, 2011)
J/MNRAS/435/3206 : Properties of field RR Lyrae variables (Dambis+, 2013)
J/ApJ/782/59 : Abundances of 8 RR Lyrae subclass C stars (Govea+, 2014)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/A+A/562/A90 : Times of maximum light of Blazhko RRab stars (Skarka, 2014)
J/ApJ/808/11 : RR Lyrae stars in M4. II. Spitzer/IRAC phot. (Neeley+, 2015)
J/MNRAS/447/2404 : Equivalent width of 21 RR Lyrae stars (Pancino+, 2015)
J/ApJ/841/84 : Theoretical framework for RR Lyrae. II. MIR (Neeley+, 2017)
J/ApJ/848/68 : Abundances & RVs of RRc stars (Sneden+, 2017)
J/ApJ/864/57 : Abundances of field & GC RR Lyrae. I. (Magurno+, 2018)
J/MNRAS/481/1195 : GaiaDR2 RR Lyrae stars as standard candles (Muraveva+, 2018)
J/A+A/622/A60 : Gaia DR2 misclassified RR Lyrae list (Clementini+, 2019)
J/ApJ/881/104 : Spectroscopic obs. of RR Lyrae in NGC5139 (Magurno+, 2019)
J/ApJ/908/20 : Field RR Lyrae as galactic probes. II. (Crestani+, 2021)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- Gaia Gaia DR3 identification number (1)
21- 29 F9.7 d Period [0.35/0.9] Period of fundamental pulsation
mode (2)
31- 37 F7.5 rad phi31(V) [3.76/6.81]? V band Fourier decomposition
parameter φ31
39- 43 F5.2 [Sun] [Fe/H](V) [-3.51/0.51]? Photometric metallicity
[Fe/H] from V band Fourier parameter
45- 52 F8.5 rad phi31(MIR) [-0.44/3.84]? Mid-IR Fourier decomposition
parameter φ31
54- 58 F5.2 [Sun] [Fe/H](MIR) [-3.6/0.61]? Photometric metallicity
[Fe/H] from mid-IR Fourier parameter
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Note (1): Gaia DR3 5901010294175491072 is more likely
Gaia DR3 5901010289876294272; note added by CDS.
Note (2): When both V-band and mid-IR data are present, the period included was
calculated from ASAS-SN (V-band) data as the period is usually more
accurate due to the higher amplitude and steeper light curve.
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History:
From electronic version of the journal
References:
Mullen et al. Paper II. 2022ApJ...931..131M 2022ApJ...931..131M Cat. J/ApJ/931/131
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 03-Nov-2022