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12 Questions on Star and Massive Star Cluster Formation

An ESO Workshop

Garching (Germany), July 3 to 6, 2007

organized by: Tom Wilson and Markus Kissler-Patig


All contributed Talks (i.e. except Introductions) are 10min+questions long

Tuesday, July 3

08:30-09:15 Registration at the Conference Desk
09:15-09:30 Welcome

Question 1: How are the stellar and cluster initial mass functions related and how are they influenced by the star formation history?

09:30-09:50 M.Rejkuba - Introduction
09:50-10:25 H.Sana - IMF of the open cluster NGC 6231
  R.Klessen - Is the IMF universal?
  J.Melnick - The scale-free character of the cluster mass function and the universality of the stellar IMF
10:25-10:40 Poster viewing
10:40-11:10 A.Jordan - Initial Cluster Mass Function
  J.Alves - The stellar and cluster IMFs are not related
11:10-11:30 Open discussion

Question 2: What are the effects of stellar feedback?

12:00-12:10 R.Klessen - review on triggering and subsequent stellar generations
12:10-13:00 T.Preibisch - Stellar Feeback and triggered star formation in OB assocations
  R.Wunsch - Catastrophic colling in super star cluster winds - positive feedback on star-formation
  J.Dale - Feedback in simulations of massive star formation
14:15-14:30 N.Bastian - review on residual gas removal and cluster disruption
14:30-15:00 S.Mengel - Westerlund 1 as a nearby, massive test case
  D.Nuernberger - Stars, Gas, and Dust within the Galactic Starburst Region NGC 3603
15:00-15:15 Open Discussion

Question 3: What is the demographics of star formation in our Galaxy and others?

15:45-16:05 T.Megeath - Introduction
16:05-17:15 A.Bik - A full census of the massive star content of high-mass star-formation region
  F.Motte - The global study of massive star-forming complexes in our Galaxy
  N.Bastian - An objective method to study star-formation from sub-cluster to galaxy scales
  M.Gieles - Stellar clustering at different ages in the Small Magellanic Cloud
17:15-17:45 Discussion
DINNER Workshop Dinner in Garching

Wednesday, July 4

Question 4: How did star formation proceed in Globular Clusters?

09:00-09:20  F.D'Antona - Introduction: the complex chemistry within GCs
09:20-09:50  A.Milone - Observational evidence of multiple stellar generations in globular clusters
  T.Decressin - Effects of fast rotating massive stars in early globular clusters evolution
09:50-10:10 Posters
10:10-10:25  Discussion: on normally-abnormal clusters, and introduction to the problem of complexity in Omega Cen
10:25-10:45 M.Hilker - Are ultra-compact dwarf galaxies scaled up omega Centauris?
  J.Colucci - Measuring Chemical Abundances and Horizontal Branch Morphology of Extragalactic Clusters using High Resolution Spectroscopy
10:45-11:00 Discussion: on the star formation history: from normally-abnormal GCs to omega Cen and dwarf galaxies

Question 5: How can we merge the galactic and extragalactic views of massive star formation regions derived from images and SEDs to a coherent physical picture?

11:30-11:55 J.Steinacker - Introduction
11:55-12:10 I.Konstantopoulos - Photometric and Spectroscopic Studies of the Cluster Population of Region B in M82
12:10-12:30 Poster Viewing
14:00-14:30 R.Siebenmorgen (and E.Kruegel) - Dust emission from starbursts: SED models for observers
  M.Dopita (and B.Groves) - Deconstructing the SEDs of Starburst Galaxies
14:30-15:00 Open Discussion

Question 6: What governs proto-stellar mass accretion?

15:30-15:50 D.Froebrich - Introduction
15:50-16:50 R.Banerjee/R.Pudritz - High Accretion rates during the Protostellar Phase
  M.Casali - What governs proto-stellar mass accretion?
  T.Stanke - A 200AU scale accretion disk in the Class0 protostar L1641-N MM1
  T.Megeath - Assessing the Role of environment in Protostellar Evolution
16:50-17:30 Open discussion/Poster Session (depending on poster submissions)

Thursday, July 5

Question 8: How does spiral structure affect star formation?

09:00 - 09:20 P.Grosbol - Introduction
09:20 - 10:20 H.Dottori - How does spiral structure affect star formation
  M.-M. Mac Low - Gravitational Instability as the Cause of both Spiral Structure and Star Formation
  D.Narbutis - Star clusters in the Andromeda galaxy
  R.Scheepmaker - ACS imaging of M51: correlations between cluster sizes and environments across a spiral disc
10:20 - 10:40 Poster viewing
10:40 - 11:00 Discussion of main issues

Question 9: How important is "primordial" mass segregation in the context of massive star cluster formation and evolution?

11:30-11:50 Grijs - Introduction of the topic
11:50-12:30 D.A.Gouliermis - Young star clusters in the Magellanic Clouds
  J.Ascenso - Strong biases in common mass segregation
  P.Espinoza - Revisiting Arches: Mass segregation in a young starburst cluster
14:00-14:30 E.Vesperini - Dynamical origin of early mass segregation and its implications
  W.Brandner - Westerlund 1 as a proto-globular cluster
14:30-15:00 General discussion and poster

Question 10: What is the relationship between the properties of star clusters and the environments from which they form?

15:30-15:50 K.Johnson - Introduction
15:50-16:35 P.Clark - The Star-Forming Ability of Molecular Clouds
  M.Sharina - Properties of spectroscopically confirmed globular clusters in dwarf galaxies
  H.Baumgardt - What are the effects of primordial gas expulsion on cluster evolution ?
16:35-17:00 Poster Overview
17:00-17:30 M.Mora - The star cluster properties in five late type spirals
  U.Fritze - Star Cluster Formation in different environments: similarities and differences

Friday, July 6

Question 11: What are the similarities and differences between star forming objects at different scales and in different environments...

09:00-09:20  E.Galliano - Introduction
09:20-10:30  J.Werk - Resolved Intergalactic Star Formation
   B.Ercolano - The demographics of star-forming regions from sub-parsec to galactic scales
   A.Stolte - The orbital motion of the Arches cluster - clues on cluster formation in dense environments
  B.Whitmore - The Life and Death of Star Clusters
  M.Gieles - Cluster Destruction, Infant Mortality
10:40-11:00 Posters - Discussion

Question 12: Which Physics determine the stellar upper mass limit?

11:30-11:50  H.Zinnecker - Introduction
11:50-12:30 E.Keto - Cooperative accretion and radiation pressure may form Trapezium-like clusters
   C.Weidner - The maximum-stellar-mass--cluster-mass relation as a result of stellar feedback
12:30-13:00 Posters - Discussion

Conference Summary - 14:00-16:00 - Served with Wine & Cheese

about 80 Registered Participants (as of May 25) in alphabetic order

  • Alves
  • Ascenso
  • Attwood
  • Banerjee
  • Bastian
  • Baumgardt
  • Bik
  • Bonatto
  • Brandl
  • Brandner
  • Casali
  • Colucci
  • Clark
  • D'Antona
  • Dale
  • Decressin
  • Dopita
  • Dottori
  • Ercolano
  • Espinoza
  • Fritze
  • Froebrich
  • Galliano
  • Gieles
  • Gouliermis
  • de Grijs
  • Gritschneder
  • Grosbol
  • Hilker
  • Johnson
  • Jordan
  • Keto
  • Khadekar
  • Khristoforov
  • Khristoforova, D.
  • Khristoforova, N.
  • Kissler-Patig
  • Klessen
  • Konstantopoulos
  • Kotulla
  • Lamers
  • Mac Low
  • Malinina
  • McCollum
  • Moaz
  • Megeath
  • Melnick
  • Mengel
  • Milone
  • Mora
  • Motte
  • Narbutis
  • Nuernberger
  • Papaderos
  • Perret
  • Petr-Gotzens
  • Piontek
  • Preibisch
  • Putman
  • Reines
  • Rejkuba
  • Sana
  • Santangelo
  • Scheepmaker
  • Shen
  • Siebenmorgen
  • Sharina
  • Silva Villa
  • Smith, M.
  • Sommariva
  • Stanke
  • Steinacker
  • Stolte
  • Testi
  • Vesperini
  • Villegas
  • Walch
  • Weidner
  • Werk
  • Whelan
  • Whitmore
  • Wunsch
  • Yang
  • Yu
  • Zinnecker

confirmed posters as of Monday, June 25

  1. Title: Spiral structure nature in the gran design galaxie IC2421
    Authors: Nobrega, Dottori, de Carvalho and Diaz
  2. Title: The Contribution of Blue Stragglers to Conventional Simple Stellar Population Models -- using star clusters as working samples
    Authors: Y. Xin, L. Deng, R. de Grijs, A. D. Mackey and Z. Han
  3. Title: Loci of Triggered Star Formation in the Small Magellanic Cloud
    Authors: D. A. Gouliermis, Th. Henning, W., Brandner, S. P. Quanz, M. Schmalzl, E. Henneckemper (MPIA)
  4. Title: Dynamics of NGC 5461 Core: Super Star Cluster Formation"
    Authors: Chao-Chin Yang, Paul Ricker, and You-Hua Chu (University of Illinois at Urbana-Champaign, USA)
  5. Title: The first stellar cluster
    Authors: Paul C. Clark, Simon C.O. Glover & Ralf S. Klessen
  6. Title: Natal Star Clusters Revealed in the Local Starburst NGC 4449 with High Resolution Radio and Optical Imaging
    Authors: Amy E Reines & Kelsey E Johnson
  7. Title: Ionisation and triggered star formation
    Authors: M.Gritschneder, T. Naab, F. Heitsch, A. Burkert
  8. Title: Measuring Chemical Abundances and Horizontal Branch Morphology of Extragalactic Clusters Using High Resolution Spectroscopy
    Authors: Janet E. Colucci, Rebecca A. Bernstein, Andrew McWilliam, Scott Cameron
  9. Title: Spitzer/IRS Imaging and Spectroscopy of the luminous infrared galaxy NGC 6052 (Mkn 297)
    Authors: D.G. Whelan, D. Devost, V. Charmandaris, J. Marshall, & J.R. Houck
  10. Title: Formation & Evolution of protostellar disks - 3D SPH simulations
    Authors: S.Walch, A.Burkert, T.Naab
  11. Title: Adaptive smoothing lengths in SPH
    Authors: R.E.Attwood, S.P.Goodwin, A.P.Whitworth
  12. Title: Nucleosynthesis in massive AGBs as possible source of self-enrichment in Globular Clusters'
    Authors: Paolo Ventura and Francesca D'Antona (INAF-OAR, Roma, Italy)
  13. Title: Star clusters in the Andromeda galaxy.
    Authors: Donatas Narbutis, Vladas Vansevicius, Keiichi Kodaira, Ieva Sableviciute, Rima Stonkute, Audrius Bridzius.
  14. Title: A 200 AU scale accretion disk in the Class 0 protostar L1641-N MM1
    Authors: Thomas Stanke, Jonathan Williams
  15. Title: Hierarchical Star-formation in M33
    Authors: Nate Bastian, Barbara Ercolano, Mark Gieles, Erik Rosowlosky, Remco Scheepmaker, Rob Gutermuth, and Yuri Efremoc

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