Reference : Atmospheric parameters and chemical properties of red giants in the CoRoT asteroseism...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/175808
Atmospheric parameters and chemical properties of red giants in the CoRoT asteroseismology fields
English
Morel, Thierry mailto [Université de Liège - ULiège > > Groupe d'astrophysique des hautes énergies (GAPHE) >]
Miglio, A. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK; Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000, Aarhus C, Denmark]
Lagarde, N. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK; Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000, Aarhus C, Denmark]
Montalbán, J. [Institut d'Astrophysique et de Géophysique, Université de Liège, Allée du 6 Août, Bât. B5c, 4000, Liège, Belgium]
Rainer, M. [INAF - Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807, Merate, LC, Italy]
Poretti, E. [INAF - Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807, Merate, LC, Italy]
Eggenberger, P. [Geneva Observatory, University of Geneva, Chemin des Maillettes 51, 1290, Versoix, Switzerland]
Hekker, S. [Astronomical Institute "Anton Pannekoek", University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands; Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077, Göttingen, Germany]
Kallinger, T. [Katholieke Universiteit Leuven, Departement Natuurkunde en Sterrenkunde, Instituut voor Sterrenkunde, Celestijnenlaan 200D, 3001, Leuven, Belgium; Institute for Astrophysics, University of Vienna, Türkenschanzstrasse 17, 1180, Vienna, Austria]
Mosser, B. [LESIA, CNRS, Université Pierre et Marie Curie, Université Denis Diderot, Observatoire de Paris, 92195, Meudon Cedex, France]
Valentini, M. [Institut d'Astrophysique et de Géophysique, Université de Liège, Allée du 6 Août, Bât. B5c, 4000, Liège, Belgium > > > >]
Carrier, F. [Katholieke Universiteit Leuven, Departement Natuurkunde en Sterrenkunde, Instituut voor Sterrenkunde, Celestijnenlaan 200D, 3001, Leuven, Belgium]
Hareter, M. [Institute for Astrophysics, University of Vienna, Türkenschanzstrasse 17, 1180, Vienna, Austria]
Mantegazza, L. [INAF - Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807, Merate, LC, Italy)]
1-Apr-2014
Astronomy and Astrophysics
564
119
Yes
International
[en] asteroseismology ; stars: fundamental parameters ; stars: abundances ; stars: interiors
[en] A precise characterisation of the red giants in the seismology fields of the CoRoT satellite is a prerequisite for further in-depth seismic modelling. High-resolution FEROS and HARPS spectra were obtained as part of the ground-based follow-up campaigns for 19 targets holding great asteroseismic potential. These data are used to accurately estimate their fundamental parameters and the abundances of 16 chemical species in a self-consistent manner. Some powerful probes of mixing are investigated (the Li and CNO abundances, as well as the carbon isotopic ratio in a few cases). The information provided by the spectroscopic and seismic data is combined to provide more accurate physical parameters and abundances. The stars in our sample follow the general abundance trends as a function of the metallicity observed in stars of the Galactic disk. After an allowance is made for the chemical evolution of the interstellar medium, the observational signature of internal mixing phenomena is revealed through the detection at the stellar surface of the products of the CN cycle. A contamination by NeNa-cycled material in the most massive stars is also discussed. With the asteroseismic constraints, these data will pave the way for a detailed theoretical investigation of the physical processes responsible for the transport of chemical elements in evolved, low- and intermediate-mass stars. Based on observations collected at La Silla Observatory, ESO (Chile) with the FEROS and HARPS spectrograph at the 2.2 and 3.6-m telescopes under programs LP178.D-0361, LP182.D-0356, and LP185.D-0056.Appendix A is available in electronic form at <A href="http://www.aanda.org/10.1051/0004-6361/201322810/olm">http://www.aanda.org</A>Tables A.2 to A.6 are available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/564/A119">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/564/A119</A>
http://hdl.handle.net/2268/175808
10.1051/0004-6361/201322810
http://adsabs.harvard.edu/abs/2014A%26A...564A.119M

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
AA_564_A119.pdfPublisher postprint1.03 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.