ESO Astrophysics Symposia

Globular Clusters - Guides to Galaxies

Proceedings of the Joint ESO-FONDAP Workshop on Globular Clusters held in Concepción, Chile, 6-10
March 2006

Bearbeitet von
Tom Richtler, Søren Larsen

1. Auflage 2008. Buch. xx, 456 S. Hardcover
ISBN 978 3 540 76960 6
Format (B x L): 15,5 x 23,5 cm
Gewicht: 871 g

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Contents

Open Questions in the Globular Cluster – Galaxy Connection

Markus Kissler-Patig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1

Part I Detailed Studies of Individual Globular Clusters Detailed Chemical Abundances of Extragalactic Globular Clusters

Rebecca Bernstein, Andrew McWilliam . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Spectroscopic Abundances and Radial Velocities of the Galactic Globular Clusters 2MASS GC01 and 2MASS GC02: Preliminary Results

J. Borissova, V.D. Ivanov, A. Stephens, D. Minniti . . . . . . . . . . . . . . . . 17

Abundance Anomalies in Galactic Globular Clusters – Looking for the Stellar Culprits

C. Charbonnel, N. Prantzos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Globular Clusters in the Direction of the Inner Galaxy

J. Alonso-Garc´ıa, M. Mateo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Globular Cluster Research with Astronomical Archives

Carol A. Christian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Super-He-Rich Populations in Globular Clusters

Chul Chung, Young-Wook Lee, Suk-Jin Yoon, Seok-Joo Joo,

and Sang-Il Han . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Testing the BH 176 and Berkeley 29 Association with GASS/Monoceros

Peter M. Frinchaboy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

New Yonsei-Yale (Y ²) Isochrones and Horizontal-Branch Evolutionary Tracks with Helium Enhancements

S.-I. Han, Y.-C. Kim, Y.-W. Lee, S.K. Yi, D.-G. Kim, and P. Demarque 33

• VIII
• Contents

Search for Candle Stars in Globular Clusters: Spectroscopic Analysis of Post-AGB Candidates

G. Jasniewicz, M. Parthasarathy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

The Lack of Binaries Among Hot Horizontal Branch Stars: M80 and NGC5986

C. Moni Bidin, S. Moehler, G. Piotto, Y. Momany, A. Recio-Blanco,

R.A. M´endez . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Semi-Empirical Determination of the Mass Distribution of Horizontal Branch Stars in M3

A. Valcarce, M. Catelan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Part II The Most Massive Clusters Globular Clusters, Galactic Nuclei and Supermassive Black Holes

Patrick Coˆt´e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

UCDs – A Mixed Bag of Objects

Michael Hilker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Ultra-Compact Dwarf Galaxies and Globular Clusters: A Review of Their Spatial and Dynamical Properties

M.J. Drinkwater, E. Evstigneeva, P. Firth, C. Power . . . . . . . . . . . . . . . . 59

The Maximum Mass of Star Clusters

M. Gieles, S.S Larsen, M.R. Haas, R.A. Scheepmaker, N. Bastian . . . . 63

The Stellar Population of Ultra-Compact Dwarf Galaxies

Michael D. Gregg, Michael J. Drinkwater, Katya Evstigneeva,

Arna Karick. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

News on Ultra-Compact Dwarfs and Blue Globular Clusters

Steffen Mieske . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

UCDs and GCs: Structural Differences from HST Imaging

E.A. Evstigneeva, M.J. Drinkwater, M. Hilker,, C.Y. Peng . . . . . . . . . . . 79

Ultra-Compact Stellar Systems in the Fornax Galaxy Cluster

P. Firth, M.J. Drinkwater, E.A. Evstigneeva, A. Karick, M.D. Gregg,

M. Hilker, K. Bekki, J.B. Jones, S. Phillips . . . . . . . . . . . . . . . . . . . . . . . . 81

Multi-Colour Imaging of Ultra-Compact Objects in the Fornax Cluster

A.M. Karick, M.D. Gregg, M.J. Drinkwater, M. Hilker, P. Firth . . . . . . 83

• Contents
• IX

Part III Young Star Clusters Hierarchical Formation of Galactic Clusters

Bruce G. Elmegreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Young Massive Clusters – Formation Efficiencies and (Initial) Mass Functions

Søren S. Larsen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

The Radii of Thousands of Star Clusters in M51 with

HST/ACS

R.A. Scheepmaker, M. Gieles, M.R. Haas, N. Bastian, S.S. Larsen. . . . 103

Extragalactic Star Clusters in Merging Galaxies

Gelys Trancho . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

The Environment of Young Massive Clusters

Leonardo Vanzi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Star/Cluster Formation in Complexes: Insights from IFUs and HST

Nate Bastian . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Spectral Evolution of Blue Concentrated Star Clusters in the Large Magellanic Cloud

J.J. Claria´, J.F.C. Santos Jr., A.V. Ahumada, E. Bica, A.E. Piatti,

M.C. Parisi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Young Star Clusters in the SMC

Katharina Glatt, Eva K. Grebel, Andreas Koch . . . . . . . . . . . . . . . . . . . . . 119

Molecular Clouds and Star Formation in the Magellanic System by NANTEN

A. Kawamura, T. Minamidani, Y. Mizuno, N. Mizuno, T. Onishi, A.

Mizuno, Y. Fukui, NANTEN team . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Two Star Cluster Populations in NGC 45

M.D. Mora, S.S. Larsen, M. Kissler-Patig . . . . . . . . . . . . . . . . . . . . . . . . . 123

Characterization of Open Cluster Remnants

D.B. Pavani, E. Bica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

HST Photometry of the Binary Globular Cluster Sersic 13N-S in NGC5128^[1]

D. Villegas, D. Minniti, J.G. Funes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

• X
• Contents

Part IV Globular Cluster Systems in Dwarf and Irregular Galaxies LMC Cluster Abundances and Kinematics

Doug Geisler, Aaron Grocholski, Ata Sarajedini, Andrew Cole, Verne

Smith . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Globular Clusters in Dwarf Galaxies

Bryan W. Miller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Globular Clusters in Dwarf and Giant Galaxies

Sidney van den Bergh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

The Age-Metallicity Relation of the SMC

Andrea Kayser, Eva K. Grebel, Daniel R. Harbeck, Andrew A. Cole, Andreas Koch, John S. Gallagher, Gary S. Da Costa . . . . . . . . . . . . . . . . 157

Integrated Spectroscopic Analysis of Galactic and Small Magellanic Cloud Clusters

A.V. Ahumada, J.J. Claria´, E. Bica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Variable Stars in the Globular Clusters and in the Field of the Fornax dSph Galaxy

C. Greco¹, G. Clementini¹, E.V. Held², E. Poretti³, M. Catelan⁴, L. Dell’Arciprete³, M. Gullieuszik², M. Maio¹, L. Rizzi⁵, H.A. Smith⁶,

B.J. Pritzl⁷, A. Rest⁸, N. De Lee⁶ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Physical Parameters of Intermediate-Age LMC Clusters from Modelling of HST CMDs

L.O. Kerber, B. Barbuy, E. Brocato . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

RGB Properties of the LMC/SMC Clusters in the Infrared

Radostin Kurtev, Valentin Ivanov, Jura Borissova, M´arcio Catelan,

and Douglas Geisler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

WLM-1: A Non-Rotating, Gravitationally Unperturbed, Highly Elliptical Extragalactic Globular Cluster

Andrew W. Stephens, M´arcio Catelan, Roxana P. Contreras . . . . . . . . . . 169

Part V Globular Cluster Systems in Spiral Galaxies Star Clusters in M33 – Clues to Galaxy Formation and Evolution

Rupali Chandar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

M31 and its Globular Clusters

Kathy Perrett . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

• Contents
• XI

IR Integrated Light Colors For Galactic GCs and An Update on Young M31 Globular Clusters

Judith Cohen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Nuclear Star Clusters in Edge-on Galaxies

Anil C. Seth, Julianne J. Dalcanton, Paul W. Hodge, Victor

P. Debattista . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

HST ACS Wide-Field Photometry of the Sombrero Galaxy Globular Cluster System

Lee Spitler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

Intermediate-Age Globular Clusters in M31

Jay Strader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

Metal-Poor Globular Clusters of the Galactic Bulge

B. Barbuy, M. Zoccali, S. Ortolani, Y. Momany, D. Minniti, V. Hill, A. Renzini, E. Bica, A. Alves-Brito, A. Gom´ez, L. Pasquini, R.M. Rich 207

Globular Cluster System and Milky Way Properties Revisited

C. Bonatto, E. Bica, B. Barbuy, S. Ortolani. . . . . . . . . . . . . . . . . . . . . . . . 209

RR Lyrae-Based Calibration of the Globular Cluster Luminosity Function

M. Di Criscienzo, F. Caputo, M. Marconi, and I. Musella. . . . . . . . . . . . 213

Globular Cluster Systems in Spiral Galaxies Using ACS Imaging

Kieran Forde . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Laser Guide Star Imaging of M31 Globulars

Michael D. Gregg, Arna Karick, Bruce Macintosh . . . . . . . . . . . . . . . . . . . 217

GALEX UV Observations of M31 Globular Clusters

Soo-Chang Rey, Sangmo T. Sohn, R. Michael Rich, Suk-Jin Yoon, Chul Chung, Sukyoung K. Yi, and Young-Wook Lee . . . . . . . . . . . . . . . . . 221

Integrated Spectroscopy of Galactic Globular Clusters

Ray M. Sharples, Jaeil Cho . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

Part VI Globular Cluster Systems in Early-Type Galaxies Globular Cluster Systems: Do They Really Trace Star Formation? (Or Rather: What Mode of Star Formation Do They Trace?)

Michael A. Beasley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

• XII
• Contents

Globular Clusters in Early Type Galaxies

Jean P. Brodie . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235

Globular Clusters and Galaxy Formation

Duncan A. Forbes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

Globular Cluster Systems in Giant Ellipticals: New and Old Patterns

William E. Harris . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253

The ACS Virgo Cluster Survey

Andr´es Jord´an . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

Globular Clusters at the Centre of the Fornax Cluster: Tracing Interactions Between Galaxies

Lilia P. Bassino, Tom Richtler, Favio R. Faifer, Juan C. Forte,

Boris Dirsch, Doug Geisler, Ylva Schuberth . . . . . . . . . . . . . . . . . . . . . . . . 271

Globular Cluster Bimodality Revisited (and the Globulars- Galaxy Halo Connection)

Juan C. Forte, Favio Faifer, Doug Geisler . . . . . . . . . . . . . . . . . . . . . . . . . 275

Globular Cluster Systems, Diffuse Star Clusters, and Host Galaxies in the ACS Virgo Cluster Survey

Eric W. Peng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

Hot Populations in M87 Globular Clusters

S.T. Sohn, R.W. O’Connell, A. Kundu, W.B. Landsman, D. Burstein,

R.C. Bohlin, J.A. Frogel, J.A. Rose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

A Subaru/Suprime-Cam Wide-Field Survey of Globular Cluster Populations around M87

Naoyuki Tamura, Ray M. Sharples, Nobuo Arimoto, Masato Onodera,

Kouji Ohta, Yoshihiko Yamada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287

Stellar Populations of Globular Clusters in NGC 1407

A.J. Cenarro, J.P. Brodie, M.A. Beasley, J. Strader. . . . . . . . . . . . . . . . . 293

The Globular Cluster System of NGC 5846 Revisited: Colours, Sizes and X-Ray Counterparts

Ana L. Chies-Santos, Basilio X. Santiago, Miriani G. Pastoriza,

Duncan A. Forbes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295

Globular Cluster Systems in Shell Ellipticals

Jaeil Cho, Ray M. Sharples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297

• Contents
• XIII

GMOS Photometry of Five Globular Cluster Systems: NGC 4649, NGC 3923, NGC 524, NGC 3115 and NGC 3379

F.R. Faifer, J.C. Forte, M. Beasley, T. Bridges, D. Forbes, K. Gebhardt, D. Hanes, M. Norris, M. Pierce, R. Proctor, R. Sharples,

and S. Zepf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299

Structural Parameters from Ground-based Observations of Globular Clusters in NGC 5128

M. Go´mez, D. Geisler, W.E. Harris, T. Richtler, G.L.H. Harris, K.A.

Woodley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301

Globular Cluster Populations in Early-Type Galaxies

M. Hempel, M. Kissler-Patig, T.H. Puzia, M. Hilker, S. Zepf, A. Kundu303

The Low-Mass X-Ray Binary Globular Cluster Connection in the ACS Virgo Cluster Survey

A. Jorda´n, G.R. Sivakoff, C.L. Sarazin, J.P. Blakeslee, E.L. Blanton, P. Coˆt´e, L. Ferrarese, J.A. Irwin, A.M. Juett, S. Mei, E.W. Peng,

M.J. West . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

The Globular Cluster System of NGC 5128: Combining Broad-Band Color and Lick Index Analysis

Thomas Lilly, Uta Fritze-v. Alvensleben, Richard de Grijs . . . . . . . . . . . . 307

The Galaxy – Globular Cluster Connection in NGC 3115

Mark A. Norris, Ray M. Sharples, Harald Kuntschner . . . . . . . . . . . . . . . 309

Velocity Dispersions of Bright Globular Clusters in NGC 5128

Marina Rejkuba, Dante Minniti, Georges Meylan . . . . . . . . . . . . . . . . . . . . 311

Part VII Evolution of Cluster Systems and their Host Galaxies Imprint of Galaxy Formation and Evolution on Globular Cluster Properties

Kenji Bekki . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315

Formation of Globular Clusters in Hierarchical Cosmology: ART and Science

Oleg Y. Gnedin, Jos´e L. Prieto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323

Globular Cluster Formation in Mergers

Franc¸ois Schweizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331

The Formation Histories of Metal-Rich and Metal-Poor Globular Clusters

Stephen E. Zepf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339

• XIV
• Contents

Globular Cluster System Evolution in Early Type Galaxies

R. Capuzzo-Dolcetta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347

Star Cluster Evolution: From Young Massive Star Clusters to Old Globulars