Clues on the Galactic evolution of sulphur from star clusters

E. Caffau; L. Monaco; M. Spite; P. Bonifacio; G. Carraro; H. G. Ludwig; S. Villanova; Y. Beletsky; L. Sbordone

doi:10.1051/0004-6361/201423873

Clues on the Galactic evolution of sulphur from star clusters

E. Caffau, L. Monaco, M. Spite, P. Bonifacio, G. Carraro, H. G. Ludwig, S. Villanova, Y. Beletsky, L. Sbordone

Exact Sciences School

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Context. The abundances of α-elements are a powerful diagnostic of the star formation history and chemical evolution of a galaxy. Sulphur, being moderately volatile, can be reliably measured in the interstellar medium (ISM) of damped Ly-α galaxies and extragalactic Hii regions. Measurements in stars of different metallicity in our Galaxy can then be readily compared to the abundances in external galaxies. Such a comparison is not possible for Si or Ca that suffer depletion onto dust in the ISM. Furthermore, studying sulphur is interesting because it probes nucleosynthetic conditions that are very different from those of O or Mg. In this context measurements in star clusters are a reliable tracers of the Galactic evolution of sulphur. Aims. The aim of this paper is to determine sulphur abundances in several Galactic clusters that span a metallicity range-1.5.

Original language	English
Article number	A29
Journal	Astronomy and Astrophysics
Volume	568
DOIs	https://doi.org/10.1051/0004-6361/201423873
Publication status	Published - Aug 2014

Keywords

Galaxy: abundances
Galaxy: halo
Globular clusters: individual: M 4
Stars: abundances

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1051/0004-6361/201423873

Cite this

@article{2d2796cbc27c4c0d9e52cfd95066b74e,

title = "Clues on the Galactic evolution of sulphur from star clusters",

abstract = "Context. The abundances of α-elements are a powerful diagnostic of the star formation history and chemical evolution of a galaxy. Sulphur, being moderately volatile, can be reliably measured in the interstellar medium (ISM) of damped Ly-α galaxies and extragalactic Hii regions. Measurements in stars of different metallicity in our Galaxy can then be readily compared to the abundances in external galaxies. Such a comparison is not possible for Si or Ca that suffer depletion onto dust in the ISM. Furthermore, studying sulphur is interesting because it probes nucleosynthetic conditions that are very different from those of O or Mg. In this context measurements in star clusters are a reliable tracers of the Galactic evolution of sulphur. Aims. The aim of this paper is to determine sulphur abundances in several Galactic clusters that span a metallicity range-1.5.",

keywords = "Galaxy: abundances, Galaxy: halo, Globular clusters: individual: M 4, Stars: abundances",

author = "E. Caffau and L. Monaco and M. Spite and P. Bonifacio and G. Carraro and Ludwig, {H. G.} and S. Villanova and Y. Beletsky and L. Sbordone",

note = "Funding Information: The project was funded by FONDATION MERAC. E.C., H.G.L., and L.S. acknowledge financial support by the Sonderforschungsbereich SFB881 “The Milky Way System” (subprojects A4 and A5) of the German Research Foundation (DFG). P.B. and M.S. acknowledge support from the Programme National de Cosmologie et Galaxies (PNCG) of the Institut National des Sciences de l{\textquoteright}Univers of CNRS. S.V. gratefully acknowledges the support provided by FONDECYT No. 1130721. L.S. aknowledges financial support from Project IC120009 “Millennium Institute of Astrophysics (MAS)” of Iniciativa Cient{\'i}fica Milenio del Ministerio de Econom{\'i}a, Fomento y Turismo de Chile.",

year = "2014",

month = aug,

doi = "10.1051/0004-6361/201423873",

language = "English",

volume = "568",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

TY - JOUR

T1 - Clues on the Galactic evolution of sulphur from star clusters

AU - Caffau, E.

AU - Monaco, L.

AU - Spite, M.

AU - Bonifacio, P.

AU - Carraro, G.

AU - Ludwig, H. G.

AU - Villanova, S.

AU - Beletsky, Y.

AU - Sbordone, L.

N1 - Funding Information: The project was funded by FONDATION MERAC. E.C., H.G.L., and L.S. acknowledge financial support by the Sonderforschungsbereich SFB881 “The Milky Way System” (subprojects A4 and A5) of the German Research Foundation (DFG). P.B. and M.S. acknowledge support from the Programme National de Cosmologie et Galaxies (PNCG) of the Institut National des Sciences de l’Univers of CNRS. S.V. gratefully acknowledges the support provided by FONDECYT No. 1130721. L.S. aknowledges financial support from Project IC120009 “Millennium Institute of Astrophysics (MAS)” of Iniciativa Científica Milenio del Ministerio de Economía, Fomento y Turismo de Chile.

PY - 2014/8

Y1 - 2014/8

N2 - Context. The abundances of α-elements are a powerful diagnostic of the star formation history and chemical evolution of a galaxy. Sulphur, being moderately volatile, can be reliably measured in the interstellar medium (ISM) of damped Ly-α galaxies and extragalactic Hii regions. Measurements in stars of different metallicity in our Galaxy can then be readily compared to the abundances in external galaxies. Such a comparison is not possible for Si or Ca that suffer depletion onto dust in the ISM. Furthermore, studying sulphur is interesting because it probes nucleosynthetic conditions that are very different from those of O or Mg. In this context measurements in star clusters are a reliable tracers of the Galactic evolution of sulphur. Aims. The aim of this paper is to determine sulphur abundances in several Galactic clusters that span a metallicity range-1.5.

AB - Context. The abundances of α-elements are a powerful diagnostic of the star formation history and chemical evolution of a galaxy. Sulphur, being moderately volatile, can be reliably measured in the interstellar medium (ISM) of damped Ly-α galaxies and extragalactic Hii regions. Measurements in stars of different metallicity in our Galaxy can then be readily compared to the abundances in external galaxies. Such a comparison is not possible for Si or Ca that suffer depletion onto dust in the ISM. Furthermore, studying sulphur is interesting because it probes nucleosynthetic conditions that are very different from those of O or Mg. In this context measurements in star clusters are a reliable tracers of the Galactic evolution of sulphur. Aims. The aim of this paper is to determine sulphur abundances in several Galactic clusters that span a metallicity range-1.5.

KW - Galaxy: abundances

KW - Galaxy: halo

KW - Globular clusters: individual: M 4

KW - Stars: abundances

UR - http://www.scopus.com/inward/record.url?scp=84905734646&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201423873

DO - 10.1051/0004-6361/201423873

M3 - Article

AN - SCOPUS:84905734646

SN - 0004-6361

VL - 568

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A29

ER -

Clues on the Galactic evolution of sulphur from star clusters

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this