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THE ASTROPHYSICAL JOURNAL CONTENTS OF VOLUME 543, PART 1 2000 NOVEMBER 1, NUMBER 1 THE OBSERVED PROBABILITY DISTRIBUTION FUNCTION, POWER SPECTRUM, AND CORRELATION FUNCTION OF THE TRANSMITTED FLUX IN THE Lya FOREST Patrick McDonald, Jordi Miralda-Escudé, Michael Rauch, Wallace L. W. Sargent, Tom A. Barlow, Renyue Cen, & Jeremiah P. Ostriker ZINC AS A TRACER OF METALLICITY EVOLUTION OF DAMPED Lya SYSTEMS Giovanni Vladilo, Piercarlo Bonifacio, Miriam Centurion, & Paolo Molaro THE PROFILE OF A NARROW LINE AFTER SINGLE SCATTERING BY MAXWELLIAN ELECTRONS: RELATIVISTIC CORRECTIONS TO THE KERNEL OF THE INTEGRAL KINETIC EQUATION Sergei Y. Sazonov & Rashid A. Sunyaev GAMMA-RAY BURST AFTERGLOWS AS PROBES OF GALACTIC AND INTERGALACTIC DUST Rosalba Perna and Anthony Aguirre RJK OBSERVATIONS OF THE OPTICAL AFTERGLOW OF GRB 991216 Peter M. Garnavich, Saurabh Jha, Michael A. Pahre, KrzysztofZ . Stanek, Robert P. Kirshner, Michael R. Garcia, Andrew H. Szentgyorgyi, & John L. Tonry ANALYTICAL LIGHT CURVES OF GAMMA-RAY BURST AFTERGLOWS: HOMOGENEOUS VERSUS WIND EXTERNAL MEDIA A. Panaitescu & P. Kumar HIGH-RESOLUTION SPECTROSCOPY OF GAMMA-RAY BURSTS WITH THE TRANSIENT GAMMA-RAY SPECTROMETER P. Kurczynski, D. Palmer, H. Seifert, B. J. Teegarden, N. Gehrels, T. L. Cline, R. Ramaty, K. Hurley, N. W. Madden, & R. H. Pehl OVERALL EVOLUTION OF JETTED GAMMA-RAY BURST EJECTA Y. F. Huang, L. J. Gou, Z. G. Dai, & T. Lu AN EMISSION-LINE SEARCH FOR STAR-FORMING DWARF GALAXIES TOWARD ABELL 851 Crystal L. Martin, Jennifer Lotz, & Henry C. Ferguson CLUSTER TEMPERATURE EVOLUTION: THE MASS-TEMPERATURE RELATION G. Mark Voit RAPID SYNCHROTRON FLARES FROM BL LACERTAE DETECTED BY ASCA AND RXTE Chiharu Tanihata, Tadayuki Takahashi, Jun Kataoka, Greg M. Madejski, Susumu Inoue, Hidetoshi Kubo, Fumiyoshi Makino, John R. Mattox, & Nobuyuki Kawai THE FUNDAMENTAL PLANE OF GRAVITATIONAL LENS GALAXIES AND THE EVOLUTION OF EARLY-TYPE GALAXIES IN LOW-DENSITY ENVIRONMENTS C. S. Kochanek, E. E. Falco, C. D. Impey, J. Lehar, B. A.M cLeod, H.-W. Rix, C. R. Keeton, J. A. Munoz, & C. Y. Peng DWARF GALAXY FORMATION INDUCED BY GALAXY INTERACTIONS Tadashi Okazaki & Yoshiaki Taniguchi ISO LONG WAVELENGTH SPECTROGRAPH OBSERVATIONS OF COLD DUST IN GALAXIES Matthew Trewhella, Jonathon I. Davies, Paul B. Alton, Simone Bianchi, & Barry F. Madore THE STABILITY OF RADIATIVELY COOLED JETS IN THREE DIMENSIONS Jianjun Xu, Philip E. Hardee, & James M. Stone NEARBY OPTICAL GALAXIES: SELECTION OF THE SAMPLE AND IDENTIFICATION OF GROUPS Giuliano Giuricin, Christian Marinoni, Lorenzo Ceriani, & Armando Pisani DECONSTRUCTING THE SPECTRUM OF THE SOFT X-RAY BACKGROUND K. D. Kuntz & S. L. Snowden COOLING SEQUENCES AND COLOR-MAGNITUDE DIAGRAMS FOR COOL WHITE DWARFS WITH HYDROGEN ATMOSPHERES G. Chabrier, P. Brassard, G. Fontaine, & D. Saumon CONTENTS POWER SPECTRUM OF THE DENSITY OF COLD ATOMIC GAS IN THE GALAXY TOWARD CASSIOPEIA A AND CYGNUS A A. A. Deshpande, K. S. Dwarakanath, & W. M. Goss COSMIC-RAY EVOLUTION IN PARKER-UNSTABLE GALACTIC MAGNETIC FIELDS M. Hanasz & H. Lesch THE LOCATION OF THE DENSE AND IONIZED GAS IN THE NGC 2023 PHOTON-DOMINATED REGION F. Wyrowski, C. M. Walmsley, W. M. Goss, & A. G. G. M. Tielens FROZEN CONDITION FOR THE CHARGED PARTICLES IN MOLECULAR CLOUDS Hideyuki Kamaya & Ryoichi Nishi HELIUM AND HYDROGEN INDUCED ROTATIONAL RELAXATION OF H,CO OBSERVED AT TEMPERATURES OF THE INTERSTELLAR MEDIUM Markus Mengel & Frank C. De Lucia LABORATORY MEASUREMENT OF THE J = 1-0 TRANSITIONS OF SODIUM HYDRIDE AND POTASSIUM HYDRIDE Toshiaki Okabayashi & Mitsutoshi Tanimoto THE ABUNDANCE OF INTERSTELLAR BORON J. Christopher Howk, Kenneth R. Sembach, & Blair D. Savage SMOKE SIGNALS FROM IRC +10216. I. MILLIARCSECOND PROPER MOTIONS OF THE DUST P.G. Tuthill, J. D. Monnier, W. C. Danchi, & B. Lopez FORMATION OF AN INFALLING DISKLIKE ENVELOPE AROUND A PROTOSTAR Fumitaka Nakamura MEMBERSHIP AND MULTIPLICITY AMONG VERY LOW MASS STARS AND BROWN DWARFS IN THE PLEIADES CLUSTER E. L. Martin, W. Brandner, J. Bouvier, K. L. Luhman, J. Stauffer, G. Basri, M. R. Zapatero Osorio, & D. Barrado y Navascués INFRARED INTERFEROMETRIC OBSERVATIONS OF YOUNG STELLAR OBJECTS R. L. Akeson, D. R. Ciardi, G. T. van Belle, M. J. Creech-Eakman, & E. A. Lada THE HUBBLE SPACE TELESCOPE REVISITS THE PROPER MOTION OF PSR B0656+1 4 R. P. Mignani, A. De Luca, & P. A. Caraveo DISCOVERY OF A YOUNG RADIO PULSAR IN A RELATIVISTIC BINARY ORBIT V. M. Kaspi, A. G. Lyne, R. N. Manchester, F. Crawford, F. Camilo, J. F. Bell, N. D’ Amico, I. H. Stairs, N. P. F. McKay, D. J. Morris, & A. Possenti PLANETESIMAL ACCRETION IN BINARY STAR SYSTEMS F. Marzari & H. Scholl PHYSICAL MECHANISMS FOR THE VARIABLE SPIN-DOWN AND LIGHT CURVE OF SGR 1900+ 14 Christo; “er Thompson, Robert C. Duncan, Peter M. Woods, Chryssa Kouveliotou, Mark H. Finger, & Jan van Paradijs THE 1999 HERCULES X-1 ANOMALOUS LOW STATE W. Coburn, W. A. Heindl, J. Wilms, D. E. Gruber, R. Staubert, R. E. Rothschild, K. A. Postnov, N. Shakura, P. Risse, I. Kreykenbohm, & M. R. Pelling NONRADIAL PULSATIONS IN e PERSEI Hideyuki Saio, Eiji Kambe, & Umin Lee THE SPIN PERIOD, LUMINOSITY, AND AGE DISTRIBUTIONS OF ANOMALOUS X-RAY PULSARS Pinaki Chatterjee & Lars Hernquist AU-SCALE SYNCHROTRON JETS AND SUPERLUMINAL EJECTA IN GRS 1915+ 105 V. Dhawan, I. F. Mirabel, & L. F. Rodriguez r-MODE OSCILLATIONS AND SPIN-DOWN OF YOUNG ROTATING MAGNETIC NEUTRON STARS Wynn C. G. Ho & Dong Lai TWO-DIMENSIONAL HYDRODYNAMIC SIMULATIONS OF ZERO-AGE MAIN-SEQUENCE CONVECTIVE CORES Robert D. Deupree PROBING RED GIANT ATMOSPHERES WITH GRAVITATIONAL MICROLENSING David Heyrovsky, Dimitar Sasselov, & Abraham Loeb RESTORATION OF THE ASCA SOURCE POSITION ACCURACY E. V. Gotthelf, Y. Ueda, R. Fujimoto, T. Kii, & K. Yamaoka CONTENTS SPECTROSCOPIC FACTORS IN NUCLEAR ASTROPHYSICS: THE *°Ca(p, y)*°Sc REACTION AS AN EXAMPLE P. Descouvemont ANGULAR MOMENTUM TRANSPORT IN PARTICLE AND FLUID DISKS Eliot Quataert & Eugene I. Chiang TRAPPING AND PRECIPITATION OF PROTONS DURING STOCHASTIC ACCELERATION IN MAGNETIC LOOPS L. Kocharov, G. A. Kovaltsov, & J. Torsti MODEL PREDICTION FOR AN OBSERVED FILAMENT G. Aulanier, N. Srivastava, & S. F. Martin SOLAR MICROWAVE BURSTS AND INJECTION PITCH-ANGLE DISTRIBUTION OF FLARE ELECTRONS J. Lee & Dale E. Gary WIDTH AND ENERGY OF SOLAR p-MODES OBSERVED BY GLOBAL OSCILLATION NETWORK GROUP R. W. Komm, R. Howe, & F. Hill MAGNETOROTATIONAL INSTABILITY IN PROTOPLANETARY DISKS. II. IONIZATION STATE AND UNSTABLE REGIONS Takayoshi Sano, Shoken M. Miyama, Toyoharu Umebayashi, & Takenori Nakano ERRATUM WIDE-FIELD J- AND K-BAND GALAXY COUNTS IN THE EUROPEAN LARGE-AREA Infrared Space Observatory SURVEY FIELDS P. Vaisanen, E. V. Tollestrup, S. P. Willner, & M. Cohen INSTRUCTIONS TO AUTHORS 2000 NOVEMBER 10, NUMBER 2 DERIVING THE NONLINEAR COSMOLOGICAL POWER SPECTRUM AND BISPECTRUM FROM ANALYTIC DARK MATTER HALO PROFILES AND MASS FUNCTIONS Chung-Pei Ma & J. N. Fry A QUANTITATIVE STUDY OF INTERACTING DARK MATTER IN HALOS C. S. Kochanek & Martin White MASS-TO-LIGHT RATIOS OF GROUPS AND CLUSTERS OF GALAXIES V. Hradecky, C. Jones, R. H. Donnelly, S. G. Djorgovski, R. R. Gal, & S. C. Odewahn SIMULATIONS OF FOREGROUND EFFECTS FOR COSMIC MICROWAVE BACKGROUND POLARIZATION A. Kogut & G. Hinshaw GAMMA-LOUD QUASARS: A VIEW WITH BEPPOSAX F. Tavecchio, L. Maraschi, G. Ghisellini, A. Celotti, L. Chianpetti, A. Comastri, G. Fossati, P. Grandi, E. Pian, G. Tagliaferri, A. Treves, C. M. Raiteri, R. Sambruna, & bh‘. Villata 150 keV EMISSION FROM PKS 2149—306 WITH BEPPOSAX Martin Elvis, Fabrizio Fiore, Aneta Siemiginowska, Jill Bechtold, Smita Mathur, & Jonathan McDowell SURVEYS FOR z>3 DAMPED Lya ABSORPTION SYSTEMS: THE EVOLUTION OF NEUTRAL GAS Lisa J. Storrie-Lombardi & Arthur M. Wolfe LOW- AND HIGH-IONIZATION ABSORPTION OF Mg 1 ABSORPTION-SELECTED GALAXIES AT INTERMEDIATE REDSHIFTS. II. TAXONOMY, KINEMATICS, AND GALAXIES Christopher W. Churchill, Richard R. Mellon, Jane C. Charlton, Buell T. Jannuzi, Sofia Kirhakos, Charles C. Steidel, & Donald P. Schneider THE FALL OF THE QUASAR POPULATION A. Cavaliere & V. Vittorini M87 AT 90 CENTIMETERS: A DIFFERENT PICTURE Frazer N. Owen, Jean A. Eilek, & Namir E. Kassim NUCLEATION OF DWARF GALAXIES IN THE VIRGO CLUSTER K.S.Oh& D. N.C. Lin PROBING THE INTERSTELLAR MEDIUM IN EARLY-TYPE GALAXIES WITH INFRARED SPACE OBSERVATORY OBSERVATIONS S. Malhotra, D. Hollenbach, G. Helou, N. Silbermann, E. Valjavec, R. H. Rubin, D. Dale, D. Hunter, N. Lu, S. Lord, H. Dinerstein, & H. Thronson THEORETICAL PREDICTIONS FOR SURFACE BRIGHTNESS FLUCTUATIONS AND IMPLICATIONS FOR STELLAR POPULATIONS OF ELLIPTICAL GALAXIES Michael C. Liu, Stéphane Charlot, & James R. Graham CONTENTS SLOSHING IN HIGH-SPEED GALAXY INTERACTIONS Thomas Zeltwanger, Neil F. Comins, & Richard V. E. Lovelace DYNAMICS OF LINE-DRIVEN DISK WINDS IN ACTIVE GALACTIC NUCLEI Daniel Proga, James M. Stone, & Timothy R. Kallman GRB 991216 JOINS THE JET SET: DISCOVERY AND MONITORING OF ITS OPTICAL AFTERGLOW J. P. Halpern. R. Uglesich, N. Mirabal, S. Kassin, J. Thorst zi:sen, W. C. Keel, A. Diercks, J. S. Bloom, F. Harrison, J. Mattox, & M. Eracleous CONSTRAINTS FROM DYNAMICAL FRICTION ON THE DARK MATTER CONTENT OF BARRED GALAXIES Victor P. Debattista & J. A. Sellwood SYNCHROTRON RADIATION AS THE SOURCE OF GAMMA-RAY BURST SPECTRA Nicole M. Lloyd and Vahe Petrosian ON THE ORIGIN OF THE IRON K LINE IN THE SPECTRUM OF THE GALACTIC X-RAY BACKGROUND Azita Valinia, Vincent Tatischeff, Keith Arnaud, Ken Ebisawa, & Reuven Ramaty A PLASMA PRISM MODEL FOR AN ANOMALOUS DISPERSION EVENT IN THE CRAB PULSAR D.C. Backer, T. Wong, & J. Valanju THE DENSITY, EXTINCTION, TEMPERATURE, AND EXCITATION STRUCTURES OF NGC 2440 L. Cuesta & J. P. Phillips DISSOCIATIVE RECOMBINATION OF H,0O*, HD,O*, AND D,O* M. J. Jensen, R. C. Bilodeau, C. P. Safvan, K. Seiersen, L. H. Andersen, H. B. Pedersen, & O. Heber THREE-DIMENSIONAL MAGNETOHYDRODYNAMIC NUMERICAL SIMULATIONS OF CLOUD-WIND INTERACTIONS G. Gregori, Francesco Miniati, Dongsu Ryu, & T. W. Jones THE IMPACT OF ATMOSPHERIC FLUCTUATIONS ON DEGREE-SCALE IMAGING OF THE COSMIC MICROWAVE BACKGROUND Oliver P. Lay & Nils W. Halverson THE INITIAL MASS FUNCTION OF A MASSIVE STAR-FORMING REGION WS5S1 Shin-ichiro Okumura, Atsushi Mori, Eiji Nishihara, Etsuji Watanabe, & Takuya Yamashita TUREULENT MOLECULAR CLOUD CORES: ROTATIONAL PROPERTIES Andreas Burkert & Peter Bodenheimer CONTINUUM PUMPING OF Fe n IN THE ORION NEBULA E. M. Verner, D. A. Verner, J. A. Baldwin, G. J. Ferland, & P.G. Martin RADIO EMISSION FROM THE COMPOSITE SUPERNOVA G326.3—1.8 (MSH 15—56) John R. Dickel, D. K. Milne, & Richard G. Strom LIGHT-ELEMENT ABUNDANCE PATTERNS IN THE ORION ASSOCIATION. I. HUBBLE SPACE TELESCOPE OBSERVATIONS OF BORON IN G DWARFS Katia Cunha, Verne V. Smith, Etienne Parizot, & David L. Lambert MID-INFRARED INTERFEROMETRY ON SPECTRAL LINES. II. CONTINUUM (DUST) EMISSION AROUND IRC +10216 AND VY CANIS MAJORIS J.D. Monnier, W. C. Danchi, D. S. Hale, E. A. Lipman, P. G. Tuthill, & C. H. Townes MID-INFRARED INTERFEROMETRY ON SPECTRAL LINES. III. AMMONIA AND SILANE AROUND IRC +10216 AND VY CANIS MAJORIS J.D. Monnier, W. C. Danchi, D. S. Hale, P. G. Tuthill, & C. H. Townes He 2-113: A MULTIPOLAR PLANETARY NEBULA WITH RINGS AROUND A COOL WOLF-RAYET STAR Raghvendra Sahai, Lars-Ake Nyman, & Alwyn Wootten TEMPERATURE OF THE CENTRAL STARS OF PLANETARY NEBULAE AND THE EFFECT OF THE NEBULAR OPTICAL DEPTH R. Gruenwald & S. M. Viegas SUBMILLIMETER- AND MILLIMETER-WAVELENGTH OBSERVATIONS OF SiO AND HCN IN CIRCUMSTELLAR ENVELOPES OF AGB STARS J. H. Bieging, S. Shaked, & P. D. Gensheimer INTERPRETING THE Mg 0 h AND k LINE PROFILES OF MIRA VARIABLES B. E. Wood & M. Karovska A HIGH-SENSITIVITY MEASUREMENT OF THE MeV GAMMA-RAY SPECTRUM OF CYGNUS X-1 M. L. McConnell, J. M. Ryan, W. Collmar, V. Schénfelder, H. Steinle, A. W. Strong, H. Bloemen, W. Hermsen, L. Kuiper, K. Bennett, B. F. Phlips, & J.C. Ling CONTENTS ON THE CELLULAR STRUCTURE OF CARBON DETONATIONS F. X. Timmes, M. Zingale, K. Olson, B. Fryxell, P. Ricker, A. C. Calder, L. J. Dursi, H. Tufo, P. MacNeice, J. W. Truran, &, R. Rosner INTERMEDIATE-MASS STAR MODELS WITH DIFFERENT HELIUM AND METAL CONTENTS Giuseppe Bono, Filippina Caputo, Santi Cassisi, Marcella Marconi, Luciano Piersanti, & Amedeo Tornambé ASTROPHYSICAL QUANTITIES OF CEPHEID VARIABLES MEASURED WITH THE NAVY PROTOTYPE OPTICAL INTERFEROMETER Tyler E. Nordgren, J. T. Armstrong, M. E. Germain, R. B. Hindsley, Arsen R. Hajian, J. J. Sudol, & C. A. Hummel TIMESCALES OF RADIO EMISSION IN PULSAR J0437—4715 AT 327 MHz M. Vivekanand QUAKING NEUTRON STARS Lucia M. Franco, Bennett Link, & Richard I. Epstein JOULE HEATING IN NEUTRON STARS UNDER STRONG GRAVITATION Sujan Sengupta CONVECTIVE INSTABILITY IN PROTO-NEUTRON STARS Juan A. Miralles, José A. Pons, & Vadim A. Urpin ON THE CONSTANCY OF THE SOLAR DIAMETER M. Emilio, J. R. Kuhn, R. I. Bush, & P. Scherrer ORIGIN OF HELICAL CORONAL DISTURBANCES FROM THE SUN K. Hori ANALYSIS OF A SOLAR ACTIVE REGION EXTREME-ULTRAVIOLET SPECTRUM FROM SERTS-97 Jeffrey W. Brosius, Roger J. Thomas, Joseph M. Davila, & Enrico Landi STOCHASTIC FLUCTUATIONS IN A BABCOCK-LEIGHTON MODEL OF THE SOLAR CYCLE Paul Charbonneau & Mausumi Dikpati THE PHYSICAL CONDITIONS IN A POLAR CORONAL HOLE ANL NEARBY REGIONS FROM NOR‘KURA AND SOHO OBSERVATIONS K. P. Raju, I. Sakurai, K. Ichimoto, & Jagdev Singh INTENSITIES FOR TRANSITIONS INVOLVING HIGHLY EXCITED STATES OF N nu: A RELATIVISTIC TREATMENT C. Lavin, E. Olalla, & I. Martin ERRATUM ON THE PERTURBATIONS OF VISCOUS ROTATING NEWTONIAN FLUIDS Manuel Ortega-Rodriguez & Robert V. Wagoner