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THE ASTROPHYSICAL JOURNAL CONTENTS OF VOLUME 448, PART 1 1995 JULY 20, Number 1 THE CLOUD-IN-CLOUD PROBLEM IN THE PRESS-SCHECHTER FORMALISM OF HIERARCHICAL STRUCTURE FORMATION Karsten Jedamzik EFFECTS OF ATMOSPHERIC EMISSION ON GROUND-BASED MICROWAVE BACKGROUND MEASUREMENTS 192-Cll M. Bersanelli, M. Bensadoun, L. Danese, G. De Amici, A. Kogut, S. Levin, M. Limon, D. Maino, G. F. Smoot, & C. Witebsky PROBING EARLY CLUSTERING WITH Lya ABSORPTION LINES BEYOND THE QUASAR REDSHIFT 192-D10 Abraham Loeb & Daniel J. Eisenstein THE HUBBLE SPACE TELESCOPE SAMPLE OF RADIO-LOUD QUASARS: THE Lya/HfB RATIO 192-E10 Hagai Netzer, M. S. Brotherton, Beverley J. Wills, Mingsheng Han, D. Wills, J. A. Baldwin, G. J. Ferland, & I. W. A. Browne EXCITATION OF ACTIVITY IN GALAXIES BY MINOR MERGERS Lars Hernquist & J. Christopher Mihos INFERRING GALAXY VIEWING ANGLES Jeremy S. Heyl, Lars Hernquist, & David N. Spergel A MULTIPARAMETRIC ANALYSIS OF THE EINSTEIN SAMPLE OF EARLY-TYPE GALAXIES. III. COMPARISONS WITH THE x-PARAMETERS Paul B. Eskridge, Giuseppina Fabbiano, & Dong-Woo Kim INTERSTELLAR GRAINS IN ELLIPTICAL GALAXIES: GRAIN EVOLUTION 193-C12 John C. Tsai & William G. Matthews AN X-RAY AND OPTICAL STUDY OF THE DWARF GALAXY NGC 1569: EVIDENCE FOR A 193-E1 STARBURST-DRIVEN OUTFLOW Timothy M. Heckman, Michael Dahlem, Matthew D. Lehnert, Giuseppina Fabbiano, Diane Gilmore, & William H. Waller LINE STRENGTH GRADIENTS IN ELLIPTICAL AND BRIGHTEST CLUSTER GALAXIES David Fisher, Marijn Franx, & Garth Illingworth THE VERTICAL DISTRIBUTION AND KINEMATICS OF H 1 AND MASS MODELS OF THE GALACTIC DISK Sangeeta Malhotra THE LOCATION OF STELLAR CLUSTERS IN THE BIG DENT: AN AGE GRADIENT ALONG THE Z-AXIS Jestis Cabrera-Canio, Edmundo Moreno, José Franco, & Emilio J. Alfaro LIMITS ON GALACTIC GAMMA-RAY LINES AT 4.44 MeV and 6.13 MeV FROM NUCLEAR DE-EXCITATION Michael J. Harris, Gerald H. Share, & Daniel C. Messina MULTIFREQUENCY RADIO STUDIES OF G359.1-00.2 Andrew D. Gray, Jennifer Nicholls, Ron D. Ekers, & Lawrence E. Cram THE INTERMEDIATE STELLAR MASS POPULATION IN R136 DETERMINED FROM HUBBLE SPACE TELESCOPE PLANETARY CAMERA 2 IMAGES Deidre A. Hunter, Edward J. Shaya, Jon A. Holtzman, Robert M. Light, Earl J. O’Neil, Jr, & Roger Lynds INFRARED EMISSION FROM GLOBULAR CLUSTERS: LIMITS ON STELLAR MASS LOSS AND INTERSTELLAR DUST G. R. Knapp, J. E. Gunn, & A. J. Connolly CATACLYSMIC AND CLOSE BINARIES IN STAR CLUSTERS. III. RECOVERY OF THE QUIESCENT NOVA 1860 a.p. (T SCORPII) IN THE CORE OF THE GLOBULAR CLUSTER M80 Michael M. Shara & Laurent Drissen PHYSICAL PROPERTIES OF DENSE CORES: DCO* OBSERVATIONS 195-All Harold M. Butner, Elizabeth A. Lada, & Robert B. Loren CONTENTS TURBULENCE IN MOLECULAR CLOUDS John Dubinski, Ramesh Narayan, & T. G. Phillips INTERSTELLAR ALCOHOLS S. B Charnley, M. E. Kress, A. G. G. M. Tielens, & T. J. Millar WFPC2 STUDIES OF THE CRAB NEBULA. I. HST AND ROSAT IMAGING OF THE SYNCHROTRON NEBULA J. Jeff Hester, Paul A. Scowen, Ravi Sankrit, Christopher J. Burrows, John S. Gallagher III, Jon A. Holtzman, Alan Watson, John T. Trauger, Gilda E. Ballester, Stefano Casertano, John T. Clarke, David Crisp, Robin W. Evans, Richard E. Griffiths, John G. Hoessel, John Krist, Roger Lynds, Jeremy R. Mould, Earl J. O’Neil, Jr, Karl R. Stapelfeldt, & James A. Westphal NEUTRINO PAIR SYNCHROTRON RADIATION FROM RELATIVISTIC ELECTRONS IN STRONG MAGNETIC FIELDS A. Vidaurre, A. Pérez, H. Sivak, J. Bernabéu, & J. M*. Ibdriez VARIATION OF GRAVITATIONAL DELAY IN PULSAR TIMING OBSERVATIONS DUE TO PROPER MOTION OF FOREGROUND STARS AND MEASUREMENT OF STELLAR MASS Kouji Ohnishi, Mizuhiko Hosokawa, Toshio Fukushima, & Mine Takeuti THE SYNCHROTRON SELF-COMPTON MODEL FOR X-RAY AND y-RAY EMISSION FROM PULSARS K. S. Cheng & D. M. Wei DISCRETE MASS LOSS IN A LOW-MASS BINARY WITH A RAPIDLY SPINNING NEUTRON STAR Alexander Muslimov & Marek J. Sarna FRICTIONAL HEATING AND NEUTRON STAR THERMAL EVOLUTION Kenneth A. Van Riper, Bennett Link, & Richard I. Epstein A SEARCH FOR MAGNETIC FIELDS AMONG DA WHITE DWARFS Gary D. Schmidt & Paul S. Smith THE PRESUPERNOVA EVOLUTION AND EXPLOSION OF HELIUM STARS THAT EXPERIENCE MASS LOSS S. E. Woosley, Norbert Langer, & Thomas A. Weaver A MODEL FOR THE AMORPHOUS CARBON GRAINS AROUND C-RICH OBJECTS A. Blanco, S. Fonti, & V. Orofino 1 MILLIMETER POLARIMETRY OF YOUNG STELLAR OBJECTS: LOW-MASS PROTOSTARS AND T TAURI STARS Motohide Tamura, J. H. Hough, & Saeko S. Hayashi COMPTON GAMMA-RAY OBSERVATORY OBSERVATIONS OF THE CRAB PULSAR M. P. Ulmer, S. M. Matz, D. A. Grabelsky, J. E. Grove, M. S. Strickman, R. Much, M. C. Busetta, A. Strong, L. Kuiper, D. J. Thompson, D. Bertsch, J. M. Fierro, & P. L. Nolan HIGH-SPEED PHOTOMETER OBSERVATIONS OF THE LMC PULSAR B0540-69 197-B13 Patricia T. Boyd, G. W. van Citters, J. F. Dolan, K. G. Wolinski, J. W. Percival, R. C. Bless, J. L. Elliott, M. J. Nelson, & M. J. Taylor BINARY MODELS FOR THE SOLAR NEIGHBORHOOD AND MAGELLANIC CLOUD W-R POPULATIONS 197-C6 William W. Dalton & Craig L. Sarazin TAKING THE PULSE OF DQ HERCULIS 197-D6 Phillip J. Martell, Keith Horne, Christopher M. Price, & Richard H. Gomer HUBBLE SPACE TELESCOPE AND R-BAND ECLIPSE MAPS OF THE UX URSAE MAJORIS ACCRETION DISK 197-E13 R. Baptista, Keith Horne, R. W. Hilditch, K. O. Mason, & J. E. Drew DETECTION OF AMMONIA EMISSION TOWARD OXYGEN-RICH EVOLVED STARS 197-G10 Karl M. Menten & Javier Alcolea HIGH-VELOCITY GAS ASSOCIATED WITH THE MASSIVE, EVOLVED STAR G25.5+0.2 198-A9 D. S. Shepherd, E. Churchwell, & W. M. Goss X-RAY EMISSION FROM THE SUN IN ITS YOUTH AND OLD AGE 198-B3 J. D. Dorren, M. Giidel, & E. F. Guinan “STEADY” AND “FLUCTUATING” PARTS OF THE SUN’S INTERNAL MAGNETIC FIELD: IMPROVED MODEL 198-B12 K. M. Hiremath & M. H. Gokhale MAGNETOHYDRODYNAMIC WAVES IN A BOUNDED INHOMOGENEOUS MEDIUM WITH 198-C8 PROMINENCE-CORONA PROPERTIES R. Oliver & J. L. Ballester FLUX RETRACTION AND RECYCLING: NEGATIVE BUOYANCY-INDUCED OSCILLATIONS AS AN ALTERNATIVE TO PARKER’S THERMAL RELAXATION OSCILLATIONS Sydney D’Silva CONTENTS Vv Fiche ABSTRACTS OF THE ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1995 AUGUST THE First CALTECH-JODRELL BANK VLBI Survey. III. VLBI AnD MERLIN Opsservations aT 5 GHz anD VLA 198-E13 OBSERVATIONS AT 1.4 GHz W. Xu, A. C. S. Readhead, T. J. Pearson, A. G. Polatidis, & PR. N. Wilkinson THE SECOND CALTECH-JODRELL BANK VLBI Survey. II. OBSERVATIONS OF 102 oF 193 SOURCES 198-E13 D. R. Henstock, I. W. A. Browne, P. N. Wilkinson, G. B. Taylor, R. C. Vermeulen, T. J. Pearson, & A. C. S. Readhead THe CfA RepsHiFt Survey: DaTA FOR THE NGP+36 ZONE 198-E14 John P. Huchra, Margaret J. Geller, & Harold G. Corwin, Jr. FaR-INFRARED EMISSION FROM ABELL CLUSTERS 198-E14 Caroline V. Cox, Joel N. Bregman, & James M. Schombert AN H 1/Opticat ATLAs oF H 0 GALAXIES AND THEIR COMPANIONS 198-E14 Christopher L. Taylor, Elias Brinks, Randy M. Grashuis, & Evan D. Skillman THE MORPHOLOGY AND KINEMATICS OF 16 MARKARIAN GALAXIES WITH MULTIPLE NUCLEI. I. Basic DaTa 198-F1 Tyler E. Nordgren, George Helou, Jayaram N. Chengalur, Yervant Terzian, & Ed Khachikian RoraTION CURVES OF 967 SPIRAL GALAXIES 198-F1 Massimo Persic & Paolo Salucci HuBBLE SPACE TELESCOPE IMAGES OF THE NUCLEAR STAR-FORMING REGION IN THE INTERACTING GALAXY 198-F2 NGC 5930 Gary A. Bower & Andrew S. Wilson THE Massive STAR POPULATIONS IN IONIZED Gas SHELLS IN M33 AND M31 Deidre A. Hunter, Danielle M. Boyd, & Walter N. Hawley DYNAMICS AND INTERACTIONS OF BINARIES AND NEUTRON STARS IN GLOBULAR CLUSTERS Steinn Sigurdsson & E. S. Phinney EQUIVALENT WIDTHS FOR 54 RED GIANTS IN 47 TUCANAE, w CENTAURI, NGC 6397, M22, AnD NGC 6752 John E. Norris, G. S. Da Costa, & S. J. Tingay IRAS LRS SPEcTRA OF THE SHARPLESS H 11 REGIONS P. S. Chen, H. Gao, & G. Z. Xiong ATMOSPHERIC PARAMETERS AND LTE ABUNDANCES FOR 22 GALACTIC, A-TYPE SUPERGIANTS Kim A. Venn OBSERVATIONS OF DouBLE STARS AND NEw Pairs. XVI. RESULTS IN 1992-1994 W. D. Heintz Tue ErnsTEIN EXTENDED MEDIUM-SENSITIVITY SURVEY SECOND EPOCH: RESULTS FOR THE STARS Thomas A. Fleming, Silvano Molendi, Tommaso Maccacaro, & Anna Wolter AN EQuaTION OF STATE FOR Low-Mass STARS AND GIANT PLANETS D. Saumon, G. Chabrier, & H. M. Van Horn 1995 AUGUST 1, Number 2 CONSTRAINTS ON THE TOPOLOGY OF THE UNIVERSE FROM THE 2 YEAR COBE DATA 201-Cl Angélica de Oliveira-Costa & George F. Smoot COMPARISON OF THE COBE DMR AND TENERIFE DATA 201-C10 C._ H. Lineweaver, S. Hancock, G. F. Smoot, A. N. Lasenby, R. D. Davies, A. J. Banday, C. M. Gutiérrez de la Cruz, R. A. Watson, & R. Rebolo THE COSMIC MICROWAVE BACKGROUND DIPOLE CANNOT BE THE RESULT OF THE COSMOLOGICAL ENTROPY GRADIENT M. Jaroszyriski & B. Paczyriski ON THE VALIDITY OF THE STREAMING MODEL FOR THE REDSHIFT-SPACE CORRELATION FUNCTION IN THE LINEAR REGIME Karl B. Fisher TWO-POINT ANGULAR CORRELATION FUNCTION FOR THE GREEN BANK 4.85 GHz SKY SURVEY 201-E10 Brian L. Kooiman, Jack O. Burns, & Anatoly A. Klypin EFFECTS OF NEUTRINO DEGENERACY ON THE PRIMORDIAL ABUNDANCES OF °Be and "B 201-F9 Jong Bock Kim & Hyun Kyu Lee THE MASS DISTRIBUTION IN A COLLAPSING MERGING SPHERICAL CLUSTER OF OBJECTS 201-G3 Nir J. Shaviv & Giora Shaviv CONTENTS ON THE FR I/FR II DICHOTOMY IN POWERFUL RADIO SOURCES: ANALYSIS OF THEIR EMISSION-LINE AND RADIO LUMINOSITIES Esther L. Zirbel & Stefi A. Baum COLLISIONS OF ELLIPTICALS AND THE ONSET OF FANAROFF-RILEY TYPE I RADIO SOURCES Luis Colina & Lourdes de Juan TWO-DIMENSIONAL DECOMPOSITION OF BULGE AND DISK Y. L Byun & K. C. Freeman HIGH-RESOLUTION SPECTROSCOPY OF THE BRIGHT QUASAR HS 1700+6416 P. M. Rodriguez-Pascual, A. de la Fuente, J. L. Sanz, M. C. Recondo, J. Clavel, M. Santos-Lled, & W. Wamsteker CONSTRAINTS ON THE PARSEC-SCALE ENVIRONMENT IN NGC 1275 A. Levinson, A. Laor, & R. C. Vermeulen THE MORPHOLOGY OF THE NARROW-LINE REGION OF MARKARIAN 3 A. Capetti, F. Macchetto, D. J. Axon, W. B. Sparks, & A. Boksenberg HIGH SPATIAL RESOLUTION FABRY-PEROT IMAGING OF M82: NEAR-INFRARED RECOMBINATION LINE OBSERVATIONS Shobita Satyapal, Dan M. Watson, Judith L. Pipher, William J. Forrest, Diana Coppenbarger, S. Nicholas Raines, Scott Libonate, Francois Piché, Matthew A. Greenhouse, Howard A. Smith, Keith L. Thompson, Jacqueline Fischer, Charles E. Woodward, & Tracy Hodge NEGATIVE SEARCH FOR A COUNTERPART TO THE GAMMA-RAY REPEATER SOURCE 0525-66 John R. Dickel, You-Hua Chu, Christopher Gelino, Ross Beyer, Michael G. Burton, D. K. Milne, Jason Spyromilio, David A. Green, Christopher Wilkinson, & Norbert Junkes A PHOTOMETRIC AND SPECTROSCOPIC SURVEY FOR YOUNG STARS IN THE HALO OF M31 203-D9 N. C. Hambly, A. Fitzsimmons, F. RP. Keenan, P. L. Dufton, P. J. F. Brown, M. J. Irwin, & W. R. J. Rolleston INTERSTELLAR Mg n ABSORPTION LINES FROM LOW-REDSHIFT GALAXIES 203-E5 David V. Bowen, J. Chris Blades, & Max Pettini THE DISTRIBUTION OF METAL-ABSORBING HIGH-VELOCITY CLOUDS IN THE GALAXY 203-G10 David V. Bowen, J. Chris Blades, & Max Pettini DECAYING NEUTRINOS, THE METAGALACTIC RADIATION FIELD, AND THE IONIZATION OF NITROGEN 204-A4 IN THE INTERSTELLAR MEDIUM D. W. Sciama CHAOS IN CORE OSCILLATIONS OF GLOBULAR CLUSTERS Joseph L. Breeden & Haldan N. Cohn ROSAT ALL-SKY SURVEY OBSERVATIONS OF THE HYADES CLUSTER Robert A. Stern, Jiirgen H. M. M. Schmitt, & Peter T. Kahabka IDENTIFICATION OF EMISSION-LINE STARS IN 30 DORADUS USING HST OBSERVATIONS Joel Wm. Parker, Sara R. Heap, & Eliot M. Malumuth A COMPARISON OF DIFFUSE IONIZED AND NEUTRAL HYDROGEN AWAY FROM THE GALACTIC PLANE: Ha-EMITTING H 1 CLOUDS R. J. Reynolds, S. L. Tufte, D. T. Kung, P- R. McCullough, & C. Heiles RADIO RECOMBINATION LINE OBSERVATIONS OF PARTIALLY IONIZED GAS IN GALACTIC H n REGIONS Joseph S. Onello & J. A. Phillips EFFECTS OF PRESSURE AND RESISTIVITY ON THE AMBIPOLAR DIFFUSION SINGULARITY: TOO LITTLE, TOO LATE Axel Brandenburg & Ellen G. Zweibel MODELING LINE PROFILES OF PROTOSTELLAR COLLAPSE IN B335 WITH THE MONTE CARLO METHOD 205-A9 Minho Choi, Neal J. Evans II, Erik M. Gregersen, & Yangsheng Wang DOES NEAR-INFRARED POLARIMETRY REVEAL THE MAGNETIC FIELD IN COLD DARK CLOUDS? 205-B4 Alyssa A. Goodman, Terry J. Jones, Elizabeth A. Lada, & Philip C. Myers THE JUE SPECTRUM OF THE PLANETARY NEBULA NGC 6751 205-Cl1 Walter A. Feibelman PROTOSTELLAR COLLAPSE WITH A SHOCK 205-D8 John C. Tsai & Juliana J. L. Hsu NEBULAE AROUND LUMINOUS BLUE VARIABLES: A UNIFIED PICTURE 205-E11 Antonella Nota, Mario Livio, Mark Clampin, & Regina Schulte-Ladbeck CONTENTS PROMPT SUBSIDENCE OF A PROTO-NEUTRON STAR INTO A BLACK HOLE N. K. Glendenning COLD ACCRETION DISKS WITH CORONAE AND ADVECTION Xingming Chen HYDRODYNAMIC STUDIES OF ACCRETION ONTO MASSIVE WHITE DWARFS: ONeMg-ENRICHED NOVA OUTBURSTS. I. DEPENDENCE ON WHITE DWARF MASS M. Politano, S. Starrfield, J. W. Truran, A. Weiss, & W. M. Sparks NUMERICAL TECHNIQUES FOR THREE-DIMENSIONAL SMOOTHED PARTICLE HYDRODYNAMICS SIMULATIONS: APPLICATIONS TO ACCRETION DISKS James C. Simpson IRAS 08159-3543: OPTICAL DETECTION OF THE DUSTY, NEUTRAL BIPOLAR WIND OF A LUMINOUS YOUNG STELLAR OBJECT Th. Neckel & H. J. Staude A MODEL OF THE DIFFUSE ULTRAVIOLET RADIATION FIELD Jayant Murthy & R. C. Henry A THEORY OF WINDS FROM WOLF-RAYET STARS D. Eichler, A. Bar Shalom, & J. Oreg RADIATIVE INSTABILITIES IN THREE-DIMENSIONAL ASTROPHYSICAL MASERS Gerardo A. Scappaticci & William D. Watson ON THE GENERATION OF FLUX-TUBE WAVES IN STELLAR CONVECTION ZONES. II. IMPROVED TREATMENT OF LONGITUDINAL TUBE WAVE GENERATION Z. E. Musielak, R. Rosner, H. PR. Gail, & P- Uimschneider TOMOGRAPHIC SEPARATION OF COMPOSITE SPECTRA. III. ULTRAVIOLET DETECTION OF THE HOT 207-A10 COMPANION OF @¢ PERSEI Michelle L. Thaller, William G. Bagnuolo, Jr, Douglas R. Gies, & Laura R. Penny IMPROVED BOUNDS ON NONLUMINOUS MATTER IN SOLAR ORBIT John D. Anderson, Eunice L. Lau, Timothy P. Krisher, Duane A. Dicus, Doris C. Rosenbaum, & Vigdor L. Teplitz HST/GHRS OBSERVATIONS OF THE INTERPLANETARY MEDIUM DOWNWIND AND IN THE INNER SOLAR SYSTEM John T. Clarke, Rosine Lallement, Jean-Loup Bertaux, & Eric Quemerais EARLY SOLAR MASS LOSS, ELEMENT DIFFUSION, AND SOLAR OSCILLATION FREQUENCIES Joyce A. Guzik & Arthur N. Cox THE NEUPERT EFFECT AND THE CHROMOSPHERIC EVAPORATION MODEL FOR SOLAR FLARES Theodore T. Lee, Vahé Petrosian, & James M. McTiernan A COMPARISON OF ACTIVE REGION TEMPERATURES AND EMISSION MEASURES OBSERVED IN SOFT X-RAYS AND MICROWAVES AND IMPLICATIONS FOR CORONAL HEATING J. A. Klimchuk & D. E. Gary MAGNETIC BOUYANCY, VORTICITY, AND THREE-DIMENSIONAL FLUX-TUBE FORMATION 207-G11 P. C. Matthews, D. W. Hughes, & M. R. E. Proctor THEORETICAL PROPERTIES OF 92-LOOPS IN THE CONVECTIVE ZONE OF THE SUN. IV. STABILITY 208-A7 OF UPDRAFTS E. N. Parker NONLINEAR ENERGY TRANSFER IN SOLAR MAGNETIC LOOPS Daniel O. Gomez, Edward E. DeLuca, & Alexander N. McClymont INSTRUCTIONS TO AUTHORS