Chemical Abundances and Mixing in Stars in the Milky Way and its Satellites: Proceedings of the ESO Workshop held in Castiglione della Pescaia, Italy, 13–17 September, 2004

404 Pages·2006·9.98 MB·English

by  E.D. Friel (auth.)

ESO ASTROPHYSICS SYMPOSIA
European Southern Observatory
———————————————————
SeriesEditor:BrunoLeibundgut
S. Randich L. Pasquini (Eds.)
Chemical Abundances
and Mixing in Stars in the
Milky Way and its Satellites
Proceedings
of the ESO Workshop held
in Castiglione della Pescaia,
Italy, 13-17 September, 2004
ABC
VolumeEditors
SofiaRandich LucaPasquini
OsservatoriodiArcetri EuropeanSouthernObservatory
LargoE.Fermi,5 Karl-Schwarzschild-Str.2
50125Firenze,Italy 85748Garching,Germany
SeriesEditor
BrunoLeibundgut
EuropeanSouthernObservatory
Karl-Schwarzschild-Str.2
85748Garching
Germany
ISBN-10 3-540-34135-8SpringerBerlinHeidelbergNewYork
ISBN-13 978-3-540-34135-2SpringerBerlinHeidelbergNewYork
LibraryofCongressControlNumber:2006925844
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Preface
Ten years after the first ESO Workshop on light elements, and five years after
the IAU in conference in Natal (Brazil) on the same subject, we felt that it
was time to have a new conference on this topic: a wealth of new observational
data have become available from the 8-meter telescopes and in particular from
the VLT, and, at the same time, in the last years new theoretical roads have
also been inaugurated in the interpretation of the stellar data. It soon became
clear,ontheotherhand,thatinordertounderstandtheevolution ofthefragile
Li and Be in stars and in the Galaxy, the whole problem of internal mixing in
stars must be addressed and understood first, and therefore a large number of
elements must be investigated, in many different environments.
Adding to this general context the fact that the FLAMES facility at the
VLT was offered to the community one year earlier, and that it was starting to
produceanimpressivewealthofabundancedataofstarsintheGalaxyandinour
neighborhoods, the broad concept of the ESO–Arcetri workshop on “Chemical
Abundances and Mixing in Stars in the Milky Way and its Satellites” was built.
ThelocationhadtobeinourbelovedToscana,andCastiglionedellaPescaia
was immediately identified as an ideal place.
To achieve from this initial proposal a full conference, which gathered to-
gether from September 13 to 17 more than 150 attendees in a smooth organi-
zation, was possible only due to the dedicated work of the conference SOC (J.
Andersen,G.Gilmore,G.Meynet,P.Molaro,N.Prantzos,R.Rood,C.Sneden,
M. Spite, M. Tosi, and A. Weiss), who contributed to the selection of the main
topics and speakers and oversaw the scientific organization of the meeting. Spe-
cial thanks go to E. Masini, and P. Bristow, D. Galli, P. Sestito, C. Stoffer, and
C. Travaglio who, as part of the LOC, made our stay productive and pleasant,
andtoG.PaceandJ.D.doNascimentowhotrainedthemselvesconsiderablyby
walkingcontinuouslyduringtheconferencedaystobringthemicrophonestoall
the participants of the lively discussions. A special thank goes to M. Felli, who
told us all the secrets of the beautiful region around Castiglione della Pescaia.
The workshop would not have been possible without the support of ESO and
of the Arcetri Observatory, but a successful workshop needs most of all the
enthusiastic contribution of all the participants, to whom we are grateful.
VI Preface
We regret that at least three of our speakers were not able to submit their
written contribution, but, due to what is likely a statistical spike, they were
quite busy just after the conference in a more fundamental business; we thank
them for their participation and we wish all the best to their babies.
Arcetri and Garching, Sofia Randich
December 2005 Luca Pasquini
Contents
Part I Abundances in the Thin and Thick Disks
Metallicities and α-Abundances in Open Clusters
E.D. Friel......................................................... 3
Old Open Clusters as Tracers of Galactic Chemical Evolution:
the BOCCE Project
A. Bragaglia, M. Tosi .............................................. 9
Chemical Abundances and Mixing
in Red Clump Stars of the Galaxy
G. Tautvaiˇsiene˙, B. Edvardsson, E. Puzeras, E. Stasiukaitis, I. Ilyin...... 11
Abundance Trends in the Thin and Thick Disks
S. Feltzing ........................................................ 13
On the Chemical Abundances of Stars with Giant Planets
N.C. Santos....................................................... 19
Observational Constraints on Nucleosynthesis in AGB Stars
C. Abia, I. Dom´ınguez, O. Straniero, O. Zamora....................... 23
Advances in Chemical Abundances in Planetary Nebulae
M. Perinotto, A. Scatarzi, L. Morbidelli .............................. 27
A Comparison of Methods for Photospheric Abundance
Determinations in K-Type Stars
L. Affer, G. Micela, T. Morel, J.S. Forcada, F. Favata ................. 31
S/R Ratio in Barium Stars
D.M. Allen........................................................ 33
Observations of 3He in Planetary Nebulae
D.S. Balser, T.M. Bania, R.T. Rood, W.M. Goss ...................... 35
Chemical Composition and Kinematics of Disk Stars
O. Bienaym´e, T. Mishenina, C. Soubiran, V. Kovtyukh, A. Siebert....... 37
VIII Contents
Cu and Zn in Thick-Disk and Thin-Disk Stars
S. Bisterzo, R. Gallino, M. Pignatari................................. 39
NGC2324: A Relatively Young, Metal-Poor Open Cluster
Located Beyond the Perseus Spiral Arm
J.J. Claria´, A.E. Piatti, A.V. Ahumada .............................. 41
Fluorine Abundances in the Galaxy
K. Cunha, V.V. Smith.............................................. 44
Determination of the Age of the Galactic Thin Disk
from Th/Eu Stellar Abundance Ratios
E.F. del Peloso, L. da Silva, L.I. Arany-Prado, G.F.P. de Mello ......... 46
CNO Abundances in Giants
with Precise Radial Velocity Measurements
J.D.Jr. do Nascimento, L. da Silva, J.R. De Medeiros, J. Setiawan,
L. Pasquini ....................................................... 48
Oxygen in Metal-Rich Stars:
Abundances from [OI] 6300, OI 7771–5 and Near-UV OH
A. Ecuvillon, G. Israelian, N.C. Santos, N. Shchukina, M. Mayor, R. Rebolo 50
Ci Non-LTE Spectral Line Formation in Late-Type Stars
D. Fabbian, M. Asplund, M. Carlsson ................................ 52
Does the [α/Fe] Abundance Ratio Trend Reverse
at Super-Solar Regime? A Test on the Role
of Accurate Knowledge of Atmospheric Parameters
M.Franchini,C.Morossi,P.diMarcantonio,M.L.Malagnini,M.Chavez,
L. Rodriguez-Merino ............................................... 54
Abundances and Ages of the Deconvolved
Thin/Thick Disks of the Galaxy
P. Girard, C. Soubiran ............................................. 56
Studying Old Open Clusters with Detached Eclipsing Binaries
F.Grundahl,S.Meibom,H.Bruntt,H.R.Jensen,J.V.Clausen,S.Frandsen 58
Isotopic Abundances in RGB- and AGB-Stars
H.U. K¨aufl, B. Aringer, S. Uttenthaler, J. Hron ....................... 60
Abundance Variations in the Galactic Disk:
Planetary Nebulae, Open Clusters and Field Stars
W.J. Maciel, R.D.D. Costa ......................................... 62
Some Concerns About the Reliability
of LTE Abundance Analyses in Cool, Active Stars
T. Morel, G. Micela, F. Favata ...................................... 64
Contents IX
Chemo-Dynamical Properties of F-G-K Stars
in the −1.0 < [Fe/H] < +0.50 Range
C.Morossi,M.Franchini,P.diMarcantonio,M.L.Malagnini,M.Chavez,
L. Rodriguez-Merino ............................................... 66
Does Rotation of B Stars Depend on Metallicity?
Preliminary Results from GIRAFFE Spectra
F. Royer, P. North, C. Melo, J.-C. Mermilliod, E.K. Grebel,
J. R. de Medeiros, A. Maeder ....................................... 68
Metallicity in Open Clusters
G. Pace, L. Pasquini, P. Fran¸cois, F. Matteucci ....................... 70
Light- and Heavy-Element Abundances
from Mid-UV and Optical Spectral Syntheses
R.C. Peterson ..................................................... 72
FLAMES Observations
of the Star Forming Region NGC 6530
L. Prisinzano, F. Damiani, I. Pillitteri, G. Micela ..................... 74
The “Not-so-MAD” Coronal Abundances of Active Stars
J. Sanz-Forcada, F. Favata, G. Micela................................ 76
Fundamental Parameters of B Supergiants
S.C. Searle, R.K. Prinja, P. Crowther ................................ 78
High Precision Effective Temperatures and New Abundances
for a Large Sample of Disk Stars
T.V.Mishenina,C.Soubiran,O.Bienaym´e,V.V.Kovtyukh,S.A.Korotin,
T.I. Gorbaneva .................................................... 80
Elemental Abundances in 10 Dwarfs of the Galactic Thick Disk
G. Tautvaiˇsiene˙, A. Ivanauskas, M. Grenon, I. Ilyin.................... 82
Part II Abundances in the Spheroidal Component
Abundances in the Galactic Bulge
B. Barbuy, M. Zoccali, V. Hill, A. Renzini, S. Ortolani, D. Minniti,
L. Pasquini, E. Bica, A. Gomez, Y. Momany, J. Mel´endez,
A. Alves-Brito..................................................... 87
Abundance Ratios in the Galactic Bulge
J.P. Fulbright, R.M. Rich, A. McWilliam ............................. 93
Abundances in Globular Cluster Dwarfs/Subgiants
E. Carretta........................................................ 95
X Contents
Unraveling the Origins and History
of the Outer Halo Cluster System
I.I. Ivans ......................................................... 101
Chemical Abundance Inhomogeneities in Globular Cluster Stars
J.G. Cohen ....................................................... 103
RedGiantsSurveyinωCen:PreliminaryFLAMESGTOResults
E. Pancino........................................................ 107
Galactic Evolution of Carbon and Nitrogen
G. Israelian ....................................................... 109
First Stars: Abundance Patterns from O to Zn
and Derived SNe Yields in the Early Galaxy
R. Cayrel, M. Spite ................................................ 114
Nitrogen in the Early Universe
J.A. Johnson, F. Herwig, T.C. Beers, N. Christlieb .................... 120
Abundance of Heavy Elements in Extremely Metal-Poor Stars
P. Franc¸ois, R. Cayrel, E. Depagne, M. Spite, V. Hill, F. Spite, B. Plez,
T. Beers, F. Primas, J. Andersen, B. Barbuy, P. Bonifacio, P. Molaro,
B. Nordstr¨om...................................................... 122
The Chemical Compositions of Carbon-Enhanced
Metal-Poor Stars
W. Aoki, S.G. Ryan, J.E. Norris, T.C. Beers, N. Christlieb,
S. Tsangarides, H. Ando............................................ 124
Lead Stars at Low Metallicity: Observation versus Theory
D. Delaude, R. Gallino, S. Cristallo, O. Straniero...................... 126
Sulphur in the Early Ages of the Galaxy
E. Depagne, V. Hill, M. Spite, P. Franc¸ois, F. Spite, B. Plez, T.C. Beers,
B. Barbuy, R. Cayrel, J. Andersen, P. Bonifacio, B. Nordstro¨m,
F. Primas......................................................... 128
Star Clusters in the Galactic Anticenter Stellar Structure:
New Radial Velocities & Metallicities
P.M. Frinchaboy, R.R. Mun˜oz, S.R. Majewski, E.D. Friel, R.L. Phelps,
W.B. Kunkel ...................................................... 130
Abundance Variations in NGC 288, NGC262 and NGC 1851
F. Grundahl, H. Bruntt............................................. 132
Heavy Elements and Chemical Enrichment in Globular Clusters
G. James ......................................................... 134