IAU Symposium 268: Light elements in the Universe

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Scientific program


Program - Abstract book - Talks and posters: technical information


Program


[download in .pdf]
Monday, November 9
 
Introduction
Chair: C. Charbonnel
09h15 Welcome adress by the director of the MuseumD. Decrouez
Welcome adress by the director of the Geneva ObservatoryG. Burki
09h30   (R) Historical perspectiveD. Lambert
 
Session I: Production of the light elements in the first minutes of the Universe
 
10h00   (R) Constraints from cosmic microwave background experiments (.ppt)J. Dunkley
10h30-11h00 Coffee break and poster viewing
11h00   (R) Primordial nucleosynthesis: a cosmological probeG. Steigman
11h30   (R) The cosmic Lithium abundances and physics beyond the standard modelK. Jedamzik
12h00   (C) Big-Bang nucleaosynthesis with long-lived strongly-interacting relic particlesM. Kusakabe
 
12h20-14h Lunch at the Museum and poster viewing
 
Session II: Abundances of D, 3He and 4He (observations)
Chair: R. Rood
14h00   (R) Measurements of Deuterium in the Milky WayK. Sembach
14h30   (C) The total Deuterium abundance in the local Galactic disk and its implicationsJ. Linsky
14h55   (C) What the D/O ratio tells us about the interstellar abundance of deuterium?G. Hébrard
15h20   (C) (Un)true Deuterium abundance in the Galactic diskT. Prodanovic
15h45-16h15 Coffee break and poster viewing
16h15   (R) D and 3He in the protosolar cloudJ. Geiss
16h45-17h30Discussion A: What is the local ISM value of D? How can we explain the dispersion of extragalactic D values?Leader: M. Tosi
17h30-19h00 Wine and cheese poster viewing
 
Tuesday, November 10
Chair: M. Tosi
09h00   (R) Measurements of 3He in Galactic HII regions and planetary nebulaeT. Bania
09h30   (R) Measurements of 4He in metal-poor extragalactic regions: the primordial Helium abundance and the ΔY/ΔO ratioM. Peimbert
10h00   (C) 4He abundances: discrepancies between optical and radio recombination line measurementsD. Balser
10h20   (C) The primordial He abundance from a large sample of low-metallicity HII regionsY. Izotov
10h40   (C) The dominant terms contributing to the uncertainties in nebular abundancesE. Skillman
11h00-11h30 Coffee break and poster viewing
11h30   (R) The quite complex Simple Stellar Populations of Globular ClustersA. Bragaglia
12h00   (C) Revisiting the Helium abundance from multiple main sequences in globular clustersL. Casagrande
12h20   (C) Helium self-enrichment in globular clustersT. Decressin
12h40   (C) Are the most iron-poor stars Helium rich?G. Meynet
 
13h00-14h30 Lunch outside the Museum
Chair: B. Barbuy
14h30   (C) The Helium contribution from massive AGBsP. Ventura
 
Session III: Abundances of LiBeB (observations)
 
14h50   (R) LiBeB in the light of 3D hydrodynamical models and non-LTE line formationM. Asplund
15h20   (R) Li isotopes in metal-poor halo dwarfsM. Spite
15h50-16h15 Coffee break and poster viewing
16h15   (C) Depletion in the Spite plateau: solving the cosmological Li discrepancyJ. Melendez
16h35   (C) Convection and 6Li in the atmospheres of metal-poor halo satrsM. Steffen
16h55-17h40Discussion B: What is the 4He from HII regions? What needs to be done to better understand the systematic effects? (.pptx)Leader: G. Ferland
17h45 Welcome adress by Jean-Dominique Vassali and Stéphane Berthet, Rector and General secretary of the Geneva University -- Cocktail
 
Wednesday, November 11
Chair: Y. Izotov
09h00   (R) Beryllium and Boron in metal-poor halo starsF. Primas
09h30   (C) New Beryllium results in halo stars from Keck/Hires spectraA. Merchant Boesgaard
09h50   (C) Boron abundances in diffuse interstellar cloudsA. Ritchey
10h10   (C) Boron abundances in the Galactic diskK. Cunha
10h30   (R) Lithium in globular clusters: dip, diffusion and dredge-upA. Korn
11h00-11h30 Coffee break and poster viewing
Chair: P. Molaro
11h30   (C) Main-sequence and sub-giant stars in the globular cluster NGC 6397: the complex evolution of the Lithium abundanceJ. Gonzalez Hernandez
11h50   (C) The primordial Lithium problem: clues from old globular cluster starsK. Lind
12h10   (C) Lithium in a metal-poor external galaxy: Omega CentauriP. Bonifacio
12h30   (R) Li, Be, and B in Population I dwarf starsS. Randich
13h00   (C) Enhanced Lithium depletion in solar-type stars with exoplanetsG. Israelian
 
13h20 Lunch outside the Museum
13h30 Women lunch (registration requested)
 
Free afternoon
 
18h30 -- Public colloquium at Uni Dufour -- "Deuterium, hélium, lithium: du Big Bang à la civilisation contemporaine"
 
Thursday, November 12
Chair: F. Primas
09h00   (R) Light elements in stars with exoplanetsN. Santos
09h30   (R) Observations of LiBeB in RGB and AGB starsV. Smith
10h00   (C) Mass loss and luminosities of S- and C-AGB stars with and without LithiumR. Guandalini
10h20   (R) Observations of light elements in massive starsA. Kaufer
10h50-11h15 Coffee break and poster viewing
 
Session IV: Sources and sinks of light elements
 
11h15   (R) Light elements as diagnostics on the structure and evolution of low- and intermediate-mass starsS. Talon
11h45   (C) Rotational mixing and Lithium depletionM. Pinsonneault
12h05   (C) Effects of rotation and magnetic fields on the structure and surface abundances of solar-type starsP. Eggenberger
12h25   (R) The light elements in a helio- (astero-) seismic perspectiveS. Vauclair
 
12h55-14h00 Lunch at the Museum and poster viewing
Chair: D. Lambert
14h00   (R) Lithium production in evolved stars (AGB, novae)F. D'Antona
14h30   (C) Lithium production by thermohaline mixing in low-mass, low-metallicity AGB starsR. Stancliffe
14h50   (R) Light elements in massive single and binary starsN. Langer
15h20-15h45 Coffee break and poster viewing
 
Session V: Evolution of the light elements in the Universe
 
15h45   (R) Galactic evolution of D, 3He et 4HeD. Romano
16h15   (C) Thermohaline mixing in stars: solving the longstanding 3He problemN. Lagarde
16h35   (C) Theoretical ΔY/ΔZ in the early UniverseS. Ekström
16h55-17h45Discussion C: The stellar yields in 3He, 4He, and 7Li: main sources, observational constraints, and problemsLeader: A. Maeder
 
19h30 Conference dinner (registration requested)
 
Friday, November 13
Chair: S. Talon
09h30   (R) Galactic evolution of 7LiF. Matteucci
10h00   (C) Lithium, Beryllium, and Boron production in core-collapse supernovaeK. Nakamura
10h20   (R) Light elements: spallation production mechanisms (.pptx)H. Reeves
10h50-11h15 Coffee break and poster viewing
11h15   (R) Galactic evolution of spallogenic elements (6Li, 9Be, 10Be, 11B)N. Prantzos
11h45   (C) Beryllium abundances and the formation of the halo and the thick diskR. Smiljanic
12h05-12h50Discussion D: Observational problems with Li, Be, and B: did we really detect 6Li in stellar atmospheres? How do the LiBeB abundances vary with metallicity? Which mechanisms are responsible for the Li dip and the Li plateau?Leader: P. E. Nissen
12h50   (R) Conclusions and open questionsR. Rood
 
13h30 End of the Symposium

Abstract book


The abstract book of talks and posters will be given to the participants at registration. You can download it here in pdf format


Talks and posters: technical informations


Talks


The time slots allocated to speakers are 30 minutes total (25' + 5' for questions) for invited reviews, and 20 minutes total (15' + 5' for questions) for contributed talks. Speakers are expected to adhere strictly to time limits.

We will have available one laptop running Microsoft Windows XP (with Office 2007, and the latest Open Office and Acrobat Reader versions), and another one running Mac OS 10.5 (with Keynote 5, Office 2008, and the latest versions of Open Office and Acrobat Reader).

Please bring your presentation as a file and use one of our laptops. Speakers should expect to spend a few minutes verifying their set-up, if possible the day before their talk. An assistant will be available half an hour before the beginning of the morning or afternoon sessions, and during coffee breaks.

Poster session


The posters' maximum size is 119 cm (height) x 84 cm (width).

Posters may be displayed from Monday 9 on and for the whole duration of the Symposium in the vicinity of the conference room at the Museum, and will be accessible during coffee and lunch breaks. Do not bring your poster at the Science History Museum on the Sunday.

A special "wine and cheese" poster session is scheduled on Monday November 9 from 17h30 to 19h.

 
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