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THE ASTROPHYSICAL JOURNAL Founded in 1895 by George E. Hale and James E. Keeler HELMUT A. ABT A. DALGARNO EUGENE H. AVRETT Managing Editor Letters Editor Deputy Letters Editor Kitt Peak National Observatory Center for Astrophysics Center for Astrophysics YERVANT TERZIAN VIRGINIA TRIMBLE F. DAVID A. HARTWICK MICHAEL JURA EDWIN E. SALPETER Associate Editor Associate Editor Associate Letters Editor Associate Letters Editor Associate Letters Editor Cornell University University of Maryland and University of Victoria University of California, Los Angeles Cornell University University of California, Irvine AAS PUBLICATIONS BOARD CATHERINE PILACHOWSKI (1989-1992), Chairperson Kitt Peak National Observatory FRANCOIS SCHWEIZER (1990-1993) JACQUELINE H. VAN GORKOM (1990-1993) JAMES W. LIEBERT (1991-1994) Carnegie Institution of Washington Columbia University University of Arizona KRISTEN SELLGREN (1991-1994) H. J. G. L. M. LAMERS (1992-1995) HUGH M. VAN HORN (1992-1995) Ohio State University SRON Laboratory for Space Research, The Netherlands University of Rochester Production Manager: TULIE O’CONNOR Chief Manuscript Editor: GERALDINE BRADY Manuscript Editors: WALTER G. GiascorrF III, BETH GARRISON, KAREN LESLIE Boyp, THAD A. Doria, AND Davip E. ANDERSON Production Staff; EuizABETH HUGHES, GRACE S. WHITE, IVAN BRUNETTI, VIRGINIA M. BoycE, AND CINDY GARRETT VOLUME 402, PART 1 1993 JANUARY 1 AND JANUARY 10 PUBLISHED BY THE UNIVERSITY OF CHICAGO PRESS FOR THE AMERICAN ASTRONOMICAL SOCIETY © 1993 BY THE AMERICAN ASTRONOMICAL SOCIETY. ALL RIGHTS RESERVED. PUBLISHED THREE TIMES A MONTH COMPOSED BY SANTYPE INTERNATIONAL LIMITED, SALISBURY, ENGLAND PRINTED BY CAPITAL CITY PRESS, INC. MONTPELIER, VERMONT, U.S.A. THE ASTROPHYSICAL JOURNAL CONTENTS OF VOLUME 402, PART 1 1993 JANUARY 1, Number 1 ANNOUNCEMENT: PROPOSED CD-ROM SERIES Helmut A. Abt Ho = 43 + 11 kms™* Mpc BASED ON ANGULAR DIAMETERS OF HIGH-LUMINOSITY FIELD SPIRAL GALAXIES Allan Sandage TIDALLY TRIGGERED GALAXY FORMATION. II. GALAXY NUMBER COUNTS Cedric Lacey, Bruno Guiderdoni, Brigitte Rocca-Volmerange, & Joseph Silk THE POWER SPECTRUM OF JRAS GALAXIES Karl B. Fisher, Marc Davis, Michael A. Strauss, Amos Yahil, & John PR. Huchra OBSERVATIONAL CONSTRAINTS ON REHEATING M. Fukugita & M. Kawasaki ON °Be PRODUCTION IN THE NONUNIFORM DENSITY MODEL OF BIG BANG NUCLEOSYNTHESIS A. Coc, PR. Delbourgo-Salvador, F. de Oliveira, P.A guer, S. Barhoumi, G. Bogaert, J. Kiener, A. Lefebvre, & J. P.T hibaud THE HUBBLE SPACE TELESCOPE SNAPSHOT SURVEY. III. FURTHER OBSERVATIONS IN SEARCH OF GRAVITATIONALLY LENSED QUASARS D. Maoz, J. N. Bahcall, R. Doxsey, D. PR. Schneider, N. A. Bahcall, O. Lahav, & B. Yanny A SEARCH FOR DEAD QUASARS AMONG NEARBY LUMINOUS GALAXIES. I. THE STELLAR KINEMATICS IN THE NUCLEI OF NGC 2613, NGC 4699, NGC 5746, AND NGC 7331 Gary A. Bower, Douglas O. Richstone, Gregory D. Bothun, & Timothy M. Heckman THE EVOLUTION OF COMPACT STEEP SPECTRUM SOURCES David S. De Young NUMERICAL SIMULATION OF X-RAY-HEATED WINDS IN SEYFERT GALAXIES. I. THE CASE OF ZERO ANGULAR MOMENTUM Dinshaw §S. Balsara & Julian H. Krolik SUBARCSECOND NEAR-INFRARED IMAGING OF ULTRALUMINOUS JRAS GALAXIES S. R. Majewski, M. Hereld, D. C. Koo, G. D. Illingworth, & T. M. Heckman EFFECT OF MALMQUIST BIAS ON CORRELATION STUDIES WITH THE JRAS DATA BASE Frances Verter THE PARSEC-SCALE RADIO JET OF 4C 39.25 A. Alberdi, J. M. Marcaide, A. P. Marscher, Y. F. Zhang, P. Eldsegui, J. L. Gémez, & D. B. Shaffer NEUTRAL GAS IN THE CENTRAL 2 PARSECS OF THE GALAXY J. M. Jackson, N. Geis, R. Genzel, A. I. Harris, S. Madden, A. Poglitsch, G. J. Stacey, & C. H. Townes MONTE CARLO CALCULATIONS OF COSMIC RAYS IN THE GALAXY: EFFECT OF THE SOURCE DISTRIBUTION ON THE AGE AND MATTER DISTRIBUTIONS W. R. Webber THE COSMIC-RAY PATH LENGTH (AGE) DISTRIBUTION IN THE GALAXY: EXPERIMENTAL LIMITS ON THE DEVIATION FROM AN EXPONENTIAL W. R. Webber CO (J = 1-0) LINE EMISSION FROM GIANT MOLECULAR CLOUDS Mark G. Wolfire, David Hollenbach, & A. G. G. M. Tielens DUST TEMPERATURE DISTRIBUTIONS IN STAR-FORMING CONDENSATIONS Taoling Xie, Paul F. Goldsmith, Ronald L. Snell, & Weimin Zhou CONTENTS THE OBSERVATION OF CORRELATED VELOCITY STRUCTURES IN A TRANSLUCENT MOLECULAR CLOUD AND IMPLICATIONS FOR TURBULENCE L. Magnani, T. N. LaRosa, & S. N. Shore AMMONIA IN THE W3(OH) REGION T. L. Wilson, R. A. Gaume, & K. J. Johnston MILLIMETER-WAVELENGTH APERTURE SYNTHESIS OBSERVATIONS OF MASSIVE STAR-FORMING REGIONS IN SAGITTARIUS B2 DC Lis, RE Goldsmith, J. E. Caristrom, & N. Z. Scoville SPECTROPOLARIMETRY OF THE POST-MAIN-SEQUENCE BIPOLAR NEBULAE GL 618, M2-56, AND MI1-92 Susan R. Trammell, Harriet L. Dinerstein, & Robert W. Goodrich PULSAR DEATH LINES AND DEATH VALLEY Kaiyou Chen & Malvin Ruderman PARTICLE ACCELERATION AND NONTHERMAL RADIO EMISSION IN BINARIES OF EARLY-TYPE STARS D. Eichler & V. Usov MOLECULAR LINE EMISSION FROM CIRCUMSTELLAR DISKS Steven V. W. Beckwith & Anneila I. Sargent CO OBSERVATIONS OF CANDIDATES FOR CARBON-RICH ASYMPTOTIC GIANT BRANCH AND POST-ASYMPTOTIC GIANT BRANCH STARS Kevin Volk, Sun Kwok, & Andrew W. Woodsworth CCD OBSERVATIONS OF THE Ha LINE IN LATE G AND K SUPERGIANTS AND THEIR INTERPRETATION Sushma V. Mallik SPECKLE OBSERVATIONS OF MIRA’S COMPANION M. Karovska, P. Nisenson, & J. Beletic SIPHON FLOWS IN ISOLATED MAGNETIC FLUX TUBES. V. RADIATIVE FLOWS WITH VARIABLE IONIZATION Benjamin Montesinos & John H. Thomas PLASMA EMISSION FROM ISOTROPIC LANGMUIR TURBULENCE: ARE RADIO MICROBURSTS STRUCTURELESS? N. Gopalswamy DIFFUSION EFFECTS ON THE HELIUM ABUNDANCE OF THE SOLAR TRANSITION REGION AND CORONA Viggo H. Hansteen, Thomas E. Holzer, & Egil Leer O1 LINES IN THE SUN AND STARS. I. UNDERSTANDING THE RESONANCE LINES M. Carlsson & P. G. Judge INSTRUCTIONS TO AUTHORS 1993 JANUARY 10, Number 2 ON THE MICROWAVE BACKGROUND ANISOTROPIES PRODUCED BY NONLINEAR VOIDS J. V. Arnau, M. J. Fullana, L. Monreal, & D. Sdez SMALL-SCALE MICROWAVE BACKGROUND ANISOTROPIES IMPLIED BY LARGE-SCALE DATA A. Kashlinsky GENERATION OF SEED PERTURBATIONS FROM QUANTUM COSMOLOGY Tarun Souradeep GRAVITATIONAL MICROLENSING OF GAMMA-RAY BURSTS Shude Mao NON-GAUSSIAN SIGNATURES FROM GAUSSIAN INITIAL FLUCTUATIONS: EVOLUTION OF SKEWNESS AND KURTOSIS FROM COSMOLOGICAL SIMULATIONS IN THE HIGHLY NONLINEAR REGIME Ofer Lahav, Makoto Itoh, Shogo Inagaki, & Yasushi Suto DETECTION OF CORRELATION AMONG GALAXIES WITHIN CLUSTERS FROM THEIR TWO-DIMENSIONAL NUMBER DENSITY PROFILES Eduard Salvador-Solé, Manuel Sanromé, & Guillermo Gonzdlez-Casado CONTENTS CLUSTERING OF GALAXIES NEAR DAMPED LYMAN-ALPHA SYSTEMS WITH (z) = 2.6 A. M. Wolfe DENSE CLOUDS NEAR THE CENTRAL ENGINE OF ACTIVE GALACTIC NUCLEI R. Sivron & S. Tsuruta IMPLICATIONS OF LYMAN-ALPHA EQUIVALENT WIDTHS IN ACTIVE GALACTIC NUCLEI Joseph C. Shields & Gary J. Ferland X-RAY LIGHT CURVES OF ACTIVE GALACTIC NUCLEI ARE PHASE INCOHERENT Julian Krolik, Chris Done, & Grzegorz Madejski SPECTROSCOPIC CONSTRAINTS ON THE PROPERTIES OF DUST IN ACTIVE GALACTIC NUCLEI Ari Laor & Bruce T. Draine THE STRUCTURE OF THE BROAD-LINE REGION IN THE SEYFERT GALAXY MARKARIAN 590 Bradley M. Peterson, Babar Ali, Keith Horne, Ray Bertram, Nancy J. Lame, Richard W. Pogge, & R. Mark Wagner OBSCURATION OF QUASARS BY DUST IN DAMPED LYMAN-ALPHA SYSTEMS S. Michael Fall & Yichuan C. Pei EQUILIBRIUM SLAB MODELS OF LYMAN-ALPHA CLOUDS Jane C. Charlton, Edwin E. Salpeter, & Craig J. Hogan SIMULTANEOUS ROSAT, GINGA, VLA, IVE, AND OPTICAL OBSERVATIONS OF THE BRIGHT QUASAR H1821 + 643 Michiel Kolman, Jules PR. Halpern, Chris R. Shrader, Alexei V. Filippenko, Henner H. Fink, & Stephan G. Schaeidt THE ULTRAVIOLET-TO-NEAR-INFRARED SPECTRAL FLUX DISTRIBUTION OF FOUR BL LACERTAE OBJECTS R. Falomo, A. Treves, L. Chiappetti, L. Maraschi, E. Pian, & E. G. Tanzi FIRST MEASUREMENTS OF EXTRAGALACTIC CO(4-3) R. Giisten, E. Serabyn, C. Kasemann, A. Schinckel, G. Schneider, A. Schulz, & K. Young MAPPING CYGNUS A AT 3 MILLIMETER WAVELENGTH WITH THE MIRIAD SYSTEM M. C. H. Wright & R. J. Sault ION INJECTION AND ACCELERATION AT PARALLEL SHOCKS: COMPARISONS OF SELF-CONSISTENT PLASMA SIMULATIONS WITH EXISTING THEORIES J. Giacalone, D. Burgess, S. J. Schwartz, & Donald C. Ellison COSMIC-RAY ACCELERATION DURING THE IMPACT OF SHOCKS ON DENSE CLOUDS T. W. Jones & Hyesung Kang STELLAR EVOLUTION AS A PROBE OF NEUTRINO PROPERTIES V. Castellani & S. Degl’Innocenti A HIGH-SENSITIVITY SEARCH FOR GAMMA-RAY BURSTS BY THE SIGMA TELESCOPE ON BOARD GRANAT (THE GALACTIC CENTER AND ALi SKY DATA) R. Sunyaev, E. Churazov, M. Gilfanov, O. Terekhov, A. Dyachkov, N. Khavenson, V. Kovtunenko, R. Kremnev, A. Claret, F. Lebrun, A. Goldwurm, J. Paul, F. Pelaez, J. L. Atteia, PR Mandrou, & G. Vedrenne WARM NEUTRAL HALOS AROUND MOLECULAR CLOUDS. VI. PHYSICAL AND CHEMICAL MODELING B-G Andersson & P. G. Wannier AN INSTABILITY ASSOCIATED WITH A MAGNETOSPHERE-DISK INTERACTION H. C. Spruit & Ronald E. Taam MODEL SCATTERING ENVELOPES OF YOUNG STELLAR OBJECTS. II. INFALLING ENVELOPES Barbara A. Whitney & Lee Hartmann MASS LOSS FROM PRE-MAIN-SEQUENCE ACCRETION DISKS. I. THE ACCELERATING WIND OF FU ORIONIS Nuria Calvet, Lee Hartmann, & Scott J. Kenyon GRAVITATIONAL FORMATION TIMES AND STELLAR MASS DISTRIBUTIONS FOR STARS OF MASS 0.3-30 Mo PC. Myers & G. A. Fuller M DWARF SPECTRA FROM 0.6 TO 1.5 MICRONS: A SPECTRAL SEQUENCE, MODEL ATMOSPHERE FITTING, AND THE TEMPERATURE SCALE J. Davy Kirkpatrick, Douglas M. Kelly, George H. Rieke, James Liebert, France Allard, & Rainer Wehrse THE IRAS 1629—-23 42 2 CLOUD CORE: A STUDY OF A YOUNG BINARY SYSTEM Christopher K. Walker, John E. Carlstrom, & John H. Bieging CONTENTS COMPANIONS TO BRIGHT S AND MS STARS: TECHNETIUM DEFICIENCY AND BINARITY Hollis R. Johnson, Thomas B. Ake, & Mudhaffer M. Ameen A DEEP ENVELOPE COMPOSITION FOR TX PISCIUM? J. H. Goebel, D. Goorvitch, H. PR. Larson, & D. R. Alexander GODDARD HIGH-RESOLUTION SPECTROGRAPH OBSERVATIONS OF THE LOCAL INTERSTELLAR MEDIUM AND THE DEUTERIUM/HYDROGEN RATIO ALONG THE LINE OF SIGHT TOWARD CAPELLA Jeffrey L. Linsky, Alexander Brown, Ken Gayley, Athanassios Diplas, Blair D. Savage, Thomas R. Ayres, Wayne Landsman, Steven N. Shore, & Sara R. Heap THE HYDROGEN LYMAN-ALPHA EMISSION OF CAPELLA Thomas R. Ayres, A. Brown, K. G. Gayley, & Jeffrey L. Linsky SOLAR p-MODES IN A VERTICAL MAGNETIC FIELD: TRAPPED AND DAMPED z-MODES PS. Cally & T. J. Bogdan HELIOSEISMOLOGICAL TEST OF A NEW MODEL FOR STELLAR CONVECTION L. Paternd, R. Ventura, V. M. Canuto, & I. Mazzitelli A NEW INTERPRETATION OF THE REDSHIFT OBSERVED IN OPTICALLY THIN TRANSITION REGION LINES Viggo Hansteen %