Metallicities from high-resolution spectra of 49 RR Lyrae variables
| Autor: | J. Neeley, C. E. Martínez-Vázquez, J. Crestani, Brian Chaboyer, Massimo Dall'Ora, M. Fabrizio, Giuliana Fiorentino, Massimo Marengo, Frédéric Thévenin, C. K. Gilligan, Giuseppe Bono, J. P. Mullen, Christopher Sneden, M. Monelli, V. F. Braga |
|---|---|
| Přispěvatelé: | Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Settore FIS/05 010308 nuclear & particles physics FOS: Physical sciences High resolution Astronomy and Astrophysics Astrophysics RR Lyrae variable Astrophysics - Astrophysics of Galaxies 01 natural sciences Spectral line Stars Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences High resolution spectra Southern African Large Telescope Parallax [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 503 (4), pp.4719-4733. ⟨10.1093/mnras/stab857⟩ |
| ISSN: | 0035-8711 1365-2966 |
| DOI: | 10.1093/mnras/stab857⟩ |
| Popis: | Accurate metallicities of RR Lyrae are extremely important in constraining period-luminosity-metallicity relationships (PLZ), particularly in the near-infrared. We analyse 69 high-resolution spectra of Galactic RR Lyrae stars from the Southern African Large Telescope (SALT). We measure metallicities of 58 of these RR Lyrae stars with typical uncertainties of 0.13 dex. All but one RR Lyrae in this sample has accurate ({\sigma}_parallax ~ 10%) 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). Comment: 16 pages, 13 figures, accepted in MNRAS |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|