THE HARLOW-SHAPLEY SYMPOSIUM ON GLOBULAR CLUSTER SYSTEMS IN GALAXIES The cover photo is Schmidt camera view of Halley's comet, the galaxy Centaurus-A (with its globular cluster system) and the galactic globular Omega Centauri. It was taken by William Liller, Instituto Isaac Newton, Ministerio de Education de Chile, on April 14.513, 1986, as part of NASA's International Halley Watch, Large Scale Phenomena Section. The telescope was a 20-centimeter fll.5 Schmidt operated by Liller on Easter Island. The combined view of the most massive globular in the Galaxy with one of the most studied external galaxies and globular cluster systems is a fitting reminder of the themes of the IAU 126 Symposium. The simultaneous view of Halley's comet records the year of the meeting and the centennial year of Harlow Shapley's birth. INTERNATIONAL ASTRONOMICAL UNION UNION ASTRONOMIQUE INTERNATIONALE THE HARLOW-SHAPLEY SYMPOSIUM ON GLOBULAR CLUSTER SYSTEMS IN GALAXIES PROCEEDINGS OF THE 126TH SYMPOSIUM OF THE INTERNATIONAL ASTRONOMICAL UNION, HELD IN CAMBRIDGE, MASSACHUSETTS, U.S.A., AUGUST 25-29, 1986 Edited by JONATHAN E. GRINDLAY Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, U.S.A. and A. G. DAVIS PHILIP Van Vleck Observatory and Union College, Schenectady, New York, U.S.A. KLUWER ACADEMIC PUBLISHERS DORDRECHT I BOSTON I LONDON Library of Congress Cataloging in Publication Data Harlow Shapley Symposium on Globular Cluster Systems in Galaxies (1986: Cambridge, Mass.) The Harlow Shapley Symposium on Globular Cluster Systems in Galaxies: proceedings of the 126th symposium of the International Astronomical Union, held in Cambridge, Massachusetts, August 25-29, 1986/ edited by Jonathan E. Grindlay and A. G. Davis Philip. p. cm. At head of title: International Astronomical Union. Includes bibliographies and index. ISBN 978-90-277-2665-0 ISBN 978-94-015-1104-9 (eBook) DOI 10.1007/978-94-015-1104-9 1. Stars--Globular clusters----Congresses. 2. Shapley, Harlow, 1885-1972- Congresses. I. Grindlay, Jonathan E. II. Philip, A. G. Davis. III. Shapley, Harlow, 1885-1972. IV. International Astronomical Union. V. Title. QB853.H37 1986 523.8'55---<ic 19 87-35637 CIP Published on behalf of the International Astronomical Union by Kluwer Academic Publishers, P. O. Box 17, 3300 AA Dordrecht, Holland. Kluwer Academic Publishers incorporates the publishing programmes of D. Reidel, Martinus Nijhoff, Dr W. Junk and MTP Press. Sold and distributed in the U.S.A. and Canada by Kluwer Academic Publishers, 101 Philip Drive, Norwell, MA 02061, U.S.A. In all other countries, sold and distributed by Kluwer Academic Publishers Group, P. O. Box 322, 3300 AH Dordrecht, Holland. All Rights Reserved © 1988 by the International Astronomical Union No part of the material protected by this copyright notice may be reproduced or utilized in any form or by any means, electronic or mechanical, including photo copying, recording or by any information storage and retrieval system, without written permission from the publisher. TABLE OF CONTENTS Preface xvii List of Participants xxiii Conference Photo xxviii List of Photos of Participants and Special Figures xxx CHAPTER 1 REVIEW PAPERS ON HARLOW SHAPLEY Session Chair: M. McCarthy 1 SHAPLEY'S DEBATE Michael Hoskin 3 SHAPLEY'S ERA Helen Sawyer Hogg 11 SHAPLEY'S IMPACT Owen Gingerich 23 CHAPTER II REVIEW PAPERS ON GLOBULAR CLUSTERS IN THE MILKY WAY Session Chairs: R. McClure, J. Cohen, and J. Norris 35 AN OVERVIEW OF THE GLOBULAR CLUSTER SYSTEM OF THE GALAXY Robert Zinn 37 KINEMATICS OF THE GALACTIC GLOBULAR CLUSTER SYSTEM R. F. Webbink 49 GLOBULAR CLUSTER COLOR-MAGNITUDE DIAGRAMS James E. Hesser 61 THE OVERALL ABUNDANCES OF GLOBULAR CLUSTERS R. A. Bell 79 THE CHEMICAL INHOMOGENEITY WITHIN GLOBULAR CLUSTERS John Norris 93 AGES OF THE GALACTIC GLOBULAR CLUSTERS Don A. Vandenberg 107 GLOBULAR CLUSTER LUMINOSITY FUNCTIONS Pierre Demarque 121 vi GLOBULAR CLUSTERS AND FIELD HALO STARS Bruce W. Carney 133 CHAPTER III: REVIEW PAPERS ON GLOBULAR CLUSTERS IN NEARBY GALAXIES Session Chairs: G. Wallerstein, J. Watanabe and V. Straizys 149 OLD GLOBULAR CLUSTERS IN THE MAGELLANIC CLOUDS J. A. Graham 151 INTERMEDIATE-AGE MAGELLANIC CLOUD GLOBULAR CLUSTERS Edward W. Olszewski 159 M 31 CLUSTER SYSTEM F. Fusi Pecci 173 THE CLUSTERS OF M 33 C. A. Christian 187 THE NGC 5128 CLUSTER SYSTEM Hugh C. Harris, Gretchen L. H. Harris and James E. Hesser 205 DWARF SPHEROIDAL GALAXIES AND GLOBULAR CLUSTERS G. S. Da Costa 217 AN OVERVIEW OF GLOBULAR SYSTEMS IN DISTANT GALAXIES William E. Harris 237 THE M 87 GLOBULAR CLUSTER SYSTEM John Huchra 255 CHAPTER IV REVIEW PAPERS ON EVOLUTION OF GLOBULAR CLUSTERS Session £hairs: V. Trimble, H. Zinnecker, M. Auriere and J. Goodman 269 THE EVOLUTION OF THE SYSTEM OF GLOBULAR CLUSTERS Jeremiah P. Ostriker 271 TIDAL HEATING OF GLOBULAR CLUSTERS David Chernoff and Stuart L. Shapiro 283 CLUSTER SWAPPING Juan C. Muzzio 297 GALAXY FORMATION AND CLUSTER FORMATION Richard B. Larson 311 vii THE ORIGIN OF GLOBULAR CLUSTERS S. Michael Fall and Martin J. Rees 323 SURFACE PHOTOMETRY OF GLOBULAR CLUSTERS S. Djorgovski 333 X-RAY BINARIES AND CLUSTER EVOLUTION Jonathan E. Grindlay 347 PRECOLLAPSE EVOLUTION OF GLOBULAR CLUSTERS Shogo Inagaki 367 AFTER CORE COLLAPSE, WHAT? Haldan Cohn 379 DISOLUTION OF STAR CLUSTERS IN GALAXIES Roland Wielen 393 CHAPTER REVIEW PAPERS ON GLOBULAR CLUSTERS ~ AS TRACERS AND HST Session Chairs: M. Rees and Y. Gnedin 409 INTERSTELLAR MATTER IN GLOBULAR CLUSTERS Morton S. Roberts 4U GLOBULAR CLUSTERS AS TRACERS OF THE GALAXY MASS DISTRIBUTION K. A. Innanen 423 GLOBULAR CLUSTERS AND PRIMORDIAL COMPOSITION Roger Cayrel 431 STELLAR EVOLUTION IN GLOBULAR CLUSTERS AND HST Alvio Renzini 443 SIMULATIONS OF HST OBSERVATIONS OF GLOBULAR CLUSTERS John N. Bahcall and Donald P. Schneider 455 CHAPTER VI REVIEW PAPERS SUMMARY Session Chair: J. Grindlay 465 GLOBULAR CLUSTER SYSTEMS IN GALAXIES: MAIN TRENDS AND FUTURE DIRECTIONS Sidney van den Bergh 467 CHAPTER VII POSTER PAPERS ON HARLOW SHAPLEY AND GLOBULAR CLUSTERS IN THE H!LKI WAY Discussion Leaders: M. McCarthy and C. Pilachowski 475 viii HARLOW SHAPLEY: A VIEW FROM THE HARVARD ARCHIVES Barbara L. Welther 477 HARLOW SHAPLEY AND THE UNIVERSITY OF MISSOURI Charles J. Peterson 479 HARLOW SHAPLEY AND RED GIANT STARS Martin F. McCarthy S. J. 481 THE DEVELOPMENT OF A RED-GIANT BRANCH IN LOW TO INTERMEDIATE MASS STARS A. V. Sweigart, L. Greggio and A. Renzini 483 NEW MAIN-SEQUENCE LUMINOSITY FUNCTIONS FOR GLOBULAR CLUSTERS Robert D. McClure, Peter B. Stetson, James E. Hesser, Graham H. Smith, William E. Harris and Don A. VandenBerg 485 GLOBAL VERSUS LOCAL MASS FUNCTIONS Ivan R. King 487 A NEW SURVEY OF GLOBULAR CLUSTER STRUCTURAL AND LUMINOSITY PARAMETERS B. Cameron Reed and Charles J. Peterson 489 AXIAL RATIOS AND ORIENTATIONS FOR 100 GALACTIC GLOBULAR STAR CLUSTERS Raymond E. White and Stephen J. Sh~wl 491 ABUNDANCES IN STARS IN GLOBULAR CLUSTERS FROM PALOMAR CCD SPECTRA E. Myckki Leep, George Wallerstein and J. B. Oke 493 THE METAL ABUNDANCE OF METAL-RICH GLOBULAR CLUSTERS Raffaele Gratton, Maria Lucia Quarta and Sergio Ortolani 495 THE COMPOSITION OF WARM GIANTS IN M 71 AND M 5 Catherine A. Pilachowski and Christopher Sneden 497 THE INTEGRATED SPECTRA OF METAL-RICH GALACTIC GLOBULAR CLUSTERS: A TWO-PARAMETER FAMILY James A. Rose and Michael J. Tripicco 499 IUE INVESTIGATIONS AT THE CORE OF M 79 Bruce Altner 501 ONE-MICRON PHOTOMETRY OF OMEGA CENTAURI GIANTS Graeme H. Smith 503 ON THE BIMODAL DISTRUBUTIONS OF HORIZONTAL BRANCHES Young-Wook Lee, Pierre Demarque and Robert Zinn 505 BIMODAL DISTRIBUTIONS ON THE HORIZONTAL BRANCH Robert T. Rood and Deborah A. Crocker 507 HORIZONTAL-BRANCH STARS WITH STRONG HE LINES Deborah A. Crocker and Robert T. Rood 509 SPECTRA OF BHB STARS IN M 3, M 13 AND M 92 A. G. Davis Philip and N. N. Samus 511 FOUR-COLOR MEASURES OF BHB STARS IN M 4, M 13 AND M 55 A. G. Davis Philip 513 GLOBULAR CLUSTERS IN THE VILNIUS PHOTOMETRIC SYSTEM K. 515 Zdanavi~ius THE METALLICITY DISTRIBUTION FUNCTION OF HALO DWARFS AND GLOBULAR CLUSTERS J. B. Laird, M. P. Rupin, B. W. Carney, D. W. Latham and R. L. Kurucz 517 THE SIMILARITY OF THE HALO FIELD K GIANT POPULATION WITH THE GLOBULAR CLUSTER SYSTEM OF OUR GALAXY Kavan U. Ratnatunga 519 APPARENT ROTATION OF THE GALACTIC GLOBULAR CLUSTER SYSTEM J. Colin 521 ASTROMETRIC DISTANCES OF GLOBULAR CLUSTERS Kyle Cudworth and Ruth C. Peterson 523 ABSOLUTE PROPER MOTIONS AND SPACE MOTIONS OF GLOBULAR CLUSTERS H.-J. Tuchcolke, P. Brosche and M. Geffert 525 A SEARCH FOR OBSCURED GLOBULAR CLUSTERS S. Djorgovski 527 ON THE COLOR EXCESSES OF GLOBULAR CLUSTERS V. Straizys and R. Janulis 529 FIRST POSTER PAPER DISCUSSION 531 CHAPTER VIII POSTER PAPERS ON CLUSTER SYSTEMS IN NEARBY GALAXIES Discussion Leader: G. Lynga 539 A SEARCH FOR GLOBULAR CLUSTER CANDIDATES IN NGC 2403 M. L. Malagnini, P. Santin, F. Bonoli, L. Frederici, F. Fusi Pecci and R. G. Kron 541 x SEARCH FOR GLOBULAR CLUSTERS IN THE NEARBY GALAXIES II. NGC 3109 A. Blecha 543 A COMPLETE SAMPLE OF GLOBULAR CLUSTERS IN NGC 5128 Ray Sharples 545 ASTRONOMICAL CATALOGUES IN THE M 31 REGION P. Battistini 547 THE BLUE STAR CLUSTERS OF M 31 Paul Hodge 549 SPATIAL DISTRIBUTION OF GLOBULAR CLUSTERS IN M 31 Jun-ichi Watanabe and Tomohiko Yamagata 551 FORMATION OF POPULOUS CLUSTERS FROM METAL-POOR GAS IN THE MAGELLANIC CLOUDS T. Richtler and W. Seggewiss 553 THE DEVELOPMENT OF THE RED GIANT BRANCH IN MAGELLANIC CLOUD CLUSTERS: PROGRESS REPORT R. Buonanno, C. E. Corsi, F. Fusi Pecci, L. Greggio, A. Renzini and A. V. Sweigart 555 THE AGE DISTRIBUTION AND AGE-METALLICITY RELATION OF STAR CLUSTERS IN A NORTHERN REGION OF THE LMC Mario Mateo 557 PHOTOMETRIC MODELS FOR GLOBULAR CLUSTERS FROM POPULATION SYNTHESIS R. Capuzzo Dolcetta 559 BVRI PHOTOMETRY OF STAR CLUSTERS IN THE BOK REGION OF THE LARGE MAGELLANIC CLOUD William Liller and Gonzalo Alcaino 561 AGES AND METAL ABUNDANCES OF STAR CLUSTERS IN THE MAGELLANIC CLOUDS Horace A. Smith, Leonard Searle and Armando Manduca 563 INTERNAL DYNAMICS OF MAGELLANIC CLOUD CLUSTERS Paul Papenhausen and R. A. Schommer 565 DO BINARY CLUSTERS EXIST IN THE LARGE MAGELLANIC CLOUD? D. Hatzidimitriou and R. K. Bhatia 567 ELLIPTICITIES OF GLOBULAR CLUSTERS IN THE ANDROMEDA GALAXY Nedka M. Spassova, Anelia V. Staneva and Valery K. Golev 569