Published 2015
| Version v1
Journal article
On the alpha-element gradients of the Galactic thin disk using Cepheids
Contributors
Others:
- Dipartimento di Fisica, Universita di Roma Tor Vergata, via della Ricerca Scientifica 1, 00133, Rome, Italy
- Astronomical Institute Anton Pannekoek, University of Amsterdam
- INAF-Osservatorio Astronomico di Teramo
- Max-Planck-Institut für Astronomie (MPIA)
- INAF-Osservatorio Astronomico di Roma (INAF-OAR)
- Galaxies, Etoiles, Physique, Instrumentation (GEPI) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Université de Picardie Jules Verne (UPJV)
- Department of Physics and Astronomy, Brigham Young University
- Institute for Astronomy, University of Hawaii
- Department of Astronomy, School of Science, University of Tokyo
- INAF-Osservatorio Astronomico di Trieste (INAF-OATs)
- European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748, Garching bei Munchen, Germany
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck
- Joseph Louis LAGRANGE (LAGRANGE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
Description
We present new homogeneous measurements of Na, Al, and three alpha-elements (Mg, Si, Ca) for 75 Galactic Cepheids. The abundances are based on high spectral resolution (R~ 38 000) and high signal-to-noise ratio (S/N ~ 50-300) spectra collected with UVES at ESO VLT. The current measurements were complemented with Cepheid abundances provided by our group (75) or available in the literature, for a total of 439 Galactic Cepheids. Special attention was given to providing a homogeneous abundance scale for these five elements plus iron. In addition, accurate Galactocentric distances (RG) based on near-infrared photometry are also available for all the Cepheids in the sample. They cover a large section of the Galactic thin disk (4.1
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.archives-ouvertes.fr/hal-03790951
- URN
- urn:oai:HAL:hal-03790951v1