Metallicities from high-resolution spectra of 49 RR Lyrae variables
Type de record:
paperdataset
Créateur:
GilChaMarMul
Éditeur:
Jos
Éditeur:
CCSDOxf
Hôte:
International audience
ABSTRACT Accurate metallicities of RR Lyrae are extremely important in constraining period–luminosity–metallicity (PLZ) relationships, particularly in the near-infrared. We analyse 69 high-resolution spectra of Galactic RR Lyrae stars from the Southern African Large Telescope. We measure metallicities of 58 of these RR Lyrae stars with typical uncertainties of 0.15 dex. All but one RR Lyrae in this sample has accurate ($\sigma _{\varpi }\lesssim 10{{\ \rm per\ cent}}$) parallax from Gaia. Combining these new high-resolution spectroscopic abundances with similar determinations from the literature for 93 stars, we present new PLZ relationships in WISE W1 and W2 magnitudes, and the Wesenheit magnitudes W(W1, V − W1) and W(W2, V − W2).
Similaires
High-Resolution Downscaled CMIP6 Projections dataset of Key Climate Variables for SenegalAssessing the relationship between spatial features derived from high resolution satellite imagery and census variables in Accra, GhanaSimulation and Statistical Learning Methods Link Aflatoxin B1 Induced High-Resolution Mutational Spectra in Mice with Human HepatocarcinogenesisHigh-Resolution Estimation of Rural Poverty: Insights from EthiopiaContinental-Scale Building Detection from High Resolution Satellite ImageryEfficient Poverty Mapping from High Resolution Remote Sensing Images