Thursday Titles

Program overview


Session 59. Invited Talk

Oral, Thursday, 8:30-9:20, Zellerbach Auditorium

59.01 The Galaxy Cluster Environments of Quasars
E. Ellingson (CASA/U. Colorado)

Session 60. HII Regions

Display, Thursday, 9:20-4:00, Pauley

60.01 The He I 2.06 $\mu$m/Br$\gamma$ Ratio as a Nebular Diagnostic
J. C. Shields (Ohio State)
60.02 The Effects of Shocks and Radiation Fields on an IS-Bubble inside an H II Region
C.-H. Lyu and F.C. Bruhweiler (CUA)
60.03 HII regions and OB-star Lyman continuum fluxes.
A. S. Kutyrev, R. J. Reynolds and S. L. Tufte (UW--Madison)
60.04 IRAS Properties of \bhii Regions
T. A. Kuchar (Phillips Lab/GPOB)
60.05 A Study of the Infrared Emission from the Rosette Nebula
R. F. Shipman (U.Wyoming, Phillips Lab.), R. Assendorp (Lab. for Space Res./Groningen) and F. O. Clark (Phillips Lab.)
60.06 Multiwavelength Observations of Giant HII Regions in M33
K. -P. Cheng (NRC/NASA), P. Hintzen (California State University, Long Beach), E. Smith and T. Stecher (LASP/GSFC/NASA)
60.07 H II Regions in Sculptor Group Dwarf Galaxies
B. W. Miller (UWash)
60.08 DIRBE 1-240 $\mu$m IR Observations of H II Regions
P. M. Mitra (GSC/NASA), R. G. Arendt (ARC/NASA), M. G. Hauser, N. Boggess, E. Dwek, T. Kelsall, S. H. Moseley and R. F. Silverberg (NASA/GSFC)
60.09 A Cold HII Region in the Molecular Globule G70.7+1.2
J. A. Phillips (Caltech), J. S. Onello (SUNY) and S. R. Kulkarni (Caltech)

Session 61. Molecular Clouds, Star Formation

Display, Thursday, 9:20-4:00, Pauley

61.01 Optical Spectroscopy of Sightlines Toward High Velocity Clouds
B. E. Penprase (IPAC/Caltech), B. Welsh (NASA Headquarters), C. Blades (STScI), E. Albert (US Naval Academy) and T. Danks (GSFC)
61.02 Warm Neutral Halos around Molecular Clouds: Dust Emission
R. Sahai, B.-G. Andersson and P.G. Wannier (JPL/Caltech)
61.03 ROSAT PSPC Observations of Clouds at High Galactic Latitude
M. Juda, D. McCammon, W. T. Sanders and S. L. Snowden (UW-Madison)
61.04 The Abundance of $H_2D^+$ Ions in Cold Clouds
M. Opendak (UP)
61.05 Chemistry of the Hot Core Region in OMC-1
E. C. Sutton, R. S. Peng (U. Illinois), W. C. Danchi (UCB), P. A. Jaminet (SAO), G. Sandell (JAC) and A. P. G. Russell (ROE)
61.06 Magnetic Field Structure in Mon R2
T.H. Jarrett (Caltech/IPAC), G. Novak (Princeton Univ.), T. Xie (NASA/JPL) and P. Goldsmith (COrnell Univ.)
61.07 Dense Gas in High-Latitude Molecular Clouds
W. T. Reach (NASA/GSFC), M. W. Pound (U.Maryland) and D. J. Wilner (U.C.Berkeley)
61.08 The Effect of Angular Momentum Distribution and Equation of State on the Stability of Rotating Stars and Disks
B. K. Pickett (IU), R. H. Durisen (IU,MPI-EP) and G. A. Davis (IU)
61.09 Principal Components of the Distribution of Molecules in the Orion Molecular Cloud
H. Ungerechts, E. A. Bergin, P. F. Goldsmith, W. M. Irvine, F. P. Schloerb and R. L. Snell (FCRAO, University of Massachusetts)
61.10 The Formation of Stellar Groups in Dense Cores of Molecular Clouds
K. Patel and R. E. Pudritz (McMaster)
61.11 The Gravitational Stability of Magnetized Molecular Clouds
J. H. Holliman and C. F. McKee (UC Berkeley)
61.12 ROSAT Looks at Orion: The Distribution of Low Mass Stellar X-Ray Sources in the Ori OBI Association
F.M. Walter (SUNY, Stony Brook)
61.13 Survey for 5$_1$-4$-0$ E Methanol in Sources Which Have 4$_1$-3$_$ E Methanol Masers
A.D. Haschick (Haystack Observatory) and W.A. Baan (Arecibo Observatory)
61.14 Search for Ten Micron Sources in NGC 2023
L.V. Kuhi, M. Pouilly, T.J. Jones (U. Minnesota) and B. Jones (UCSD)
61.15 A CO and HI Survey of High-latitude Cometary, Far-IR Clouds
S. Odenwald (ARC) and J. Lockman (NRAO)
61.16 Study of the Response of GMC's in M31 to the Spiral Shock
D. R. Mizuno (RPI), M. L. Kutner (RPI) and F. Verter (GSFC)
61.17 Detection of AU-Scale Structure in Molecular Clouds
A. P. Marscher, E. M. Moore and T. M. Bania (Boston University)
61.18 Outflow Collimation in Young Stellar Objects
A. Noriega-Crespo (UWashington) and A. Frank (UMinnesota)
61.19 Far Ultraviolet Spectroscopy of the Taurus Molecular Cloud: Dust Scattering and H$_{2}$ Fluorescence
M. Hurwitz (SSL/UCB)
61.20 Molecular Cloud Distribution in the Outer Galaxy - Comparison of Arm and Interarm Cloud Populations
S. J. Carey (RPI), K. N. Mead (Union College) and M. L. Kutner (RPI)

Session 62. Very Young Stars

Display, Thursday, 9:20-4:00, Pauley

62.01 New Ring Nebulae Around Galactic Wolf-Rayet Stars From A Survey of the Southern Sky
A. P. Marston (Drake U.), G. Garcia-Segura and Y. -H. Chu (U. Illinois)
62.02 Interstellar Na I Toward the Pleiades: Evidence for a Foreground Shock
R. E. White, W. B. Forrester and A. M. Gonnella (Smith C.)
62.03 A Search for Variable Extinction in Hot Stars with Circumstellar Dust
M. L. Sitko (U.Cincinnati), E. M. Halbedel (CorralitosObs.), G. F. Lawrence (U.Minnesota), J. A. Smith (FloridaTech.) and K. Yanow (SDSU)
62.04 The Structure of the Cygnus X Region
L. A. Molnar and C. D. Halas (U. Iowa)
62.05 New Observations of Beta Pictoris circumstellar disk with the NTT Coronograph
M. Clampin (STSCI), F. Paresce (STSCI) and M. Robberto (Osservatorio di Torino)
62.06 R-Band Polarimetry of Cygnus OB2: Implications for the Magnetic Field Geometry and Polarization Models
H. A. Kobulnicky, T. J. Jones (University of Minnesota) and L. A. Molnar (University of Iowa)
62.07 Hubble Space Telescope Imaging of Herbig-Haro Object No. 2
R. D. Schwartz (U. of MO-St. Louis), M. Cohen (U.C.-Berkeley), B. F. Jones (U.C.-Santa Cruz), K. -H. Bohm (U. of Washington), J. C. Raymond, L. W. Hartmann (CfA), R. Mundt (MPI-Heidelberg), M. A. Dopita (MSSSO) and A. S. B. Schultz (Washington U.)
62.08 Ultracompact H II Regions in OB Associations
C. D. Garmany (U. Colorado)
62.09 Spectrum of the ``Invisible'' Companion of Z CMa Revealed in Polarized Light
G. C. Clayton (U. of Colorado), B. A. Whitney (CfA), R. E. Schulte-Ladbeck (U. of Pittsburgh), N. Calvet (Centro de Investigaciones de Astronomia), L. Hartmann (CfA) and S. J. Kenyon (CfA)
62.10 A Search for UV Circumstellar Absorption in Fomalhaut, a New Beta Pic-like System
F. Bruhweiler (CUA), K. -P. Cheng (NAS/NRC) and Y. Kondo (NASA/GSFC)
62.11 High Resolution Spectral Variability of SU Aur
C.M. Johns and G.S. Basri (U.C. Berkeley)
62.12 CCD Photometry of Variable Stars in the Orion Nebula Cluster
G. R. Keenan, W. Herbst (Wesleyan), C. F. Prosser and J. R. Stauffer (CfA)
62.13 Low Dispersion UV Spectral Variability in 3 Herbig Ae Stars Viewed Through Their Circumstellar Proto-Planetary Disks
C. A. Grady (ARC), M. R. P\'erez (CSC/IUE), P. S. Th\'e, D. de Winter (Amsterdam), F. Yusef-Zadeh (Northwestern), S. B. Johnson (Idaho State) and V. P. Grinin (Crimean Astrophysical Observatory)
62.14 Photometric Variability of T Tauri Stars
W. Herbst, D. K. Herbst, E. Grossman and D. Weinstein (Wesleyan)
62.15 Spectroscopic Diagnostics of Circumstellar Disk Accretion in Herbig Ae/Be Stars
L. O. Ghandour, S. E. Strom, S. Edwards and L. A. Hillenbrand (Five College Astronomy Department, University of Massachusetts, Amherst, MA 01003)
62.16 Near-Infrared Monitoring of T-Tauri Stars
C. M. Hamilton (ASU), M. F. Skrutskie (UMass) and D. Whalen (UWyo)
62.17 Iron Emission Lines in the Spectra of Classical T Tauri Stars
G. Beristain (Univ. of Mass, Amherst), S. Edwards (FCAD, Univ. of Mass, Amherst) and P. Hartigan (FCAD, Univ. of Mass, Amherst)
62.18 On the nature of the stellar cluster at the Rosette GMC CO peak
M.M. Hanson (CASA/U.Colorado), T.R. Geballe (JAC), P.S. Conti (JILA, U. Colorado) and D.L. Block (S. Africa)
62.19 High Spatial Resolution Imaging at $\lambda=10 \mu$m of LkH$\alpha 101$
R. M. Danen (UCSB, Harvard-Smithsonian Center for Astrophysics), C. R. Gwinn (UCSB) and E. E. Bloemhof (Harvard-Smithsonian Center for Astrophysics)
62.20 Submillimeter Continuum Observations of the T Tauri Spectroscopic Binary GW Orionis
R. D. Mathieu (University of Wisconsin-Madison), F. C. Adams (University of Michigan), G. A. Fuller (NRAO) and E. L. Jensen (University of Wisconsin-Madison)
62.21 A Connection Between Disk Mass and Binary Separation
E. L. Jensen, R. D. Mathieu (U. of Wisconsin-Madison) and G. A. Fuller (NRAO)
62.22 Radial Color Strips of Hubble's Variable Nebula, NGC 2261
R. Abbott, B. Martin, D. Bennum, M. Rodrigue, T. Colegrove (University of Nevada, Reno), A. Schultz (STScI), J. Christy (Hughes), M. Disanti (NASA/HQ) and U. Fink (University of Arizona)
62.23 Double-Peaked Silicate Emission in the FU Ori Star V1057 Cyg
T. Y. Brooke (JPL/Caltech), M. S. Hanner (JPL/Caltech) and A. T. Tokunaga (IfA/U. Hawaii)

Session 63. Intrinsic and Cataclysmic Variables

Display, Thursday, 9:20-4:00, Heller Lounge

63.01 A Cepheid PL Relation from 100 New Distances
T.G. Barnes (McDonald Obs.), W.P. Gieren (Catholic Univ., Santiago) and T.J. Moffett (Purdue Univ.)
63.02 Cepheid Variables in M81: Light Curves
J.A. Graham, W.L. Freedman, M.G. Lee, R. Hill (CIW), S.M. Hughes (Caltech) et al.
63.03 Precision Radial Velocities: Techniques and Applications
R. P. Butler (Berkeley)
63.04 RR Lyrae Stars in M14 and M15
N. A. Silbermann, M. J. Harrell and H. A. Smith (Michigan State Univ.)
63.05 An Updated Period Analysis of Four New Scuti Stars
R.L. Schutt (SFASU)
63.06 The LBV AG Car in its Current Active Phase
O. L. Lupie (CSC, STScI), C. Leitherer (STScI), A. D. Neto (Univ. of Sao Paolo), L. Drissen (STScI), T. Idiart (Univ. of Sao Paolo), C. Robert (STScI), A. Nota (STScI), B. Altner (ARC, Landover), W. Schmutz (Swiss Fed. Inst. for Tech., Zurich) and S. Shore (GSFC)
63.07 S119: a new Luminous Blue Variable?
A. Nota (STSCI/ESA), C. Leitherer (STSCI), M. Clampin (STSCI), L. Drissen (STSCI), A. Pasquali (University of Florence), C. Robert (STSCI) and M. Robberto (Observatory of Turin)
63.08 Photometric Observations of Cataclysmic Variables: V603 Aquilae, H0709-36, and CP Puppis
G.R. Thomas (Columbia Univ.)
63.09 Hubble Space Telescope HRS Spectroscopy of U GEMINORUM in Quiescence: Rotation of the White Dwarf
E. M. Sion, M. Huang (Villanova U.), K. Long (STScI), P. Szkody (U. Wash.) and K. Horne (STScI)
63.10 Simultaneous IUE and Ground Based Observations of SS Cygni and HL Canis Majoris
C. S. Mansperger (CSC), R. H. Kaitchuck (Ball State), P. Garnavich (DAO) and N. Dinshaw (U Ariz)
63.11 Ly$\alpha$ Absorption in Quiescent Dwarf Novae
A. Holm, H. Lanning (CSC), J. Mattei (AAVSO) and E. Nelan (U. Texas)
63.12 An Atlas of the Lyman-$\alpha$ Region for a Grid of Dwarf Nova Accretion Disk Models
R. A. Wade (Penn State), I. Hubeny (GSFC/USRA) and R. S. Polidan (NASA/GSFC)
63.13 An EUVE Observation of the polar AN UMa
K. Mukai (USRA, NASA/GSFC), J. V. Vallerga and F. Paerels (UCB)
63.14 1ES1113+432: Luminous, Soft X-ray Outburst from a Nearby Cataclysmic Variable
R. A. Remillard (MIT), A. D. Silber, J. F. Schachter and P. Slane (CfA)
63.15 Spiral Shock Effects on Disk Emission Lines
P. J. Wiita, J. S. Hooda (GSU) and S. K. Chakrabarti (TIFR)

Session 64. Pulsars

Display, Thursday, 9:20-4:00, Heller Lounge

64.01 Soft X-ray Properties of the Geminga Pulsar
J.P. Halpern and M. Ruderman (Columbia U.)
64.02 Origins of Geminga's X-ray and Gamma-ray Emission
A.K. Harding, L.M. Ozernoy and V.V. Usov (NASA/GSFC, GMU \char38\ USRA, Weizmann Inst.)
64.03 Gamma-Rays from Pulsar Outer Gaps
J. Chiang, R. W. Romani (Stanford) and C. Ho (LANL)
64.04 An April 1991 Outburst from 4U0115+63 observed by BATSE
M. Roberts, L. Cominsky (SSU) and M. Finger (CGRO-SSC)
64.05 Polarisation studies of PSR 0823-26
J. Rankin and N. Rathnasree (UVM)
64.06 Is PSR 1257+12 a Spun-up Pulsar?
K. Chen (T-6, Los Alamos National Lab)
64.07 Detection of X-rays from the Be-star/Radio Pulsar PSR1259-63
L. Cominsky, M. Roberts (SSU) and S. Johnston (ATNF/CSIRO)
64.08 General Relativistic Light Bending from PSR 1929+10
S. Yancopoulous, T.T. Hamilton and D.J. Helfand (Columbia Univ.)
64.09 Binary Evolution and Evaporating Binary Pulsars
P. McCormick and J. Frank (LSU)
64.10 Weibel Instability in Relativistic Electron-Positron Plasmas
T. -Y. B. Yang, Y. Gallant, J. Arons (UC Berkeley) and A. B. Langdon (LLNL)
64.11 Visualization of Pulsar Search Data
R. S. Foster (NRL) and A. Wolszczan (Penn. State)

Session 65. Women In Astronomy

Display, Thursday, 9:20-4:00, Pauley

65.01 The Baltimore Charter for Women in Astronomy
C. M. Urry, L. Danly, E. J. Schreier (STScI) and S. Tobias (Research Corp.)

Session 66. HAD

Display, Thursday, 9:20-4:00, Pauley

66.01 An Ancient Observatory and the Comet of 1472
B.C. Chiu (Cambridge, MA)

Session 67. Galaxy Clusters and the Extragalactic Distance Scale

Oral, Thursday, 10:30-12:00, Zellerbach Auditorium

67.01D Homogeniety of Diffuse Light in cD Clusters
X. Scheick (MSU)
67.02D Galaxy Alignments in the Perseus Supercluster
B.E. Laubscher (Amparo Corp./UNM) and S.A. Gregory (UNM)
67.03 Two galaxy clusters at $z=1.2$
M. Dickinson (UC Berkeley)
67.04 ROSAT Observations of Butcher-Oemler Clusters
D. S. Davis (U Md/GSFC) and R. F. Mushotzky (NASA/GSFC)
67.05 Simulations of Deep Optical and Near Infrared Extragalactic Counts
C. Lonsdale, A. Chokshi (IPAC), P. Mazzei and G. De Zotti (Padova)
67.06 An HST Determination of the Distance to M81
W. L. Freedman, M. G. Lee, R. Hill (OCIW), S. M. Hughes, B. F. Madore, J. R. Mould (CIT), P. Stetson (DAO), R. C. Kennicutt, A. Turner (U.Arizona), L. Ferrarese, H. Ford (JHU), J. A. Graham (CIW), J. G. Hoessel (U. Wisc.), S. Faber, G. D. Illingworth (UCSC), J. Huchra (Harvard/CfA) and J. Gunn (Princeton)
67.07 The Hubble Space Telescope Key Project to Measure H$_0$
J. R. Mould, S. M. Hughes, B. F. Madore (Caltech), S. M. Faber, G. D. Illingworth (U.C.S.C.), W. L. Freedman, M. G. Lee, R. Hill (O.C.I.W.), L. Ferrarese, H. C. Ford (J.H.U.), J. A. Graham (D.T.M.), J. E. Gunn (Princeton), J. G. Hoessel (U. Wisconsin), J. P. Huchra (CfA), R. C. Kennicutt, A. Turner (U. Arizona) and P. B. Stetson (DAO)

Session 68. Star Formation I} {Oral, Thursday, 10:30-12:00, Zellerbach Playhouse

68.01D Externally-Driven Gravitational Torques on Disk/Star Systems
E. C. Ostriker (UCB)
68.02D The FU Orionis Outburst as a Thermal Accretion Event
K. R. Bell and D. N. C. Lin (UCSC)
68.03 General Analytic Results for Nonlinear Waves and Solitons in Molecular Clouds
F. C. Adams, M. Fatuzzo and R. Watkins (U. Michigan)
68.04 The Pre-Main Sequence Evolution of Intermediate-Mass Stars
S.W. Stahler (UCB) and F. Palla (Arcetri)
68.05 Seven Be Stars Resolved by Optical Interferometry
A. Quirrenbach (NRL/USNO, OIP \char38\ USRA)
68.06 A Doppler Search for Extra-Solar Planets
G. W. Marcy and R. P. Butler (UC Berkeley/SFSU)
68.07 Dense Molecular Gas in the Bulges of External Galaxies
T. T. Helfer and L. Blitz (UMD)

Session 69. Cataclysmic Variables and Pulsars

Oral, Thursday, 10:30-12:00, Dwinelle 155

69.01 Formation and Evolution of Supersoft X-Ray Sources
S. Rappaport and R. DiStefano (MIT)
69.02 Calculated Luminosity and Period Distributions for Cataclysmic Variables in Globular Clusters
R. D. Stefano (MIT, NYIT) and S. Rappaport (MIT)
69.03 Accretion Disk Precession in AM Canum Venaticorum
J. Patterson, J.P. Halpern and A. Shambrook (Columbia, U.)
69.04 The Orbital Period Derivative of PSR B1957+20
A. S. Fruchter (UC Berkeley), Z. Arzoumian and J. H. Taylor (Princeton University)
69.05 Soft X-ray Observations of the Pulsar PSR 1055-52
H. \"Ogelman and J. P. Finley (University of Wisconsin at Madison)
69.06 Observations of Neutron Stars with EUVE
H. L. Marshall and L. R. Cominsky ()
69.07 The BBXRT Observation of Centaurus X-3
M. D. Audley and R. L. Kelley (NASA/GSFC)
69.08 EGRET Observations of High-Energy $\gamma$-Ray Pulsars
J. M. Fierro, J. Chiang, Y. C. Lin, P. F. Michelson, P. L. Nolan (Stanford), D. L. Bertsch, C. E. Fichtel, R. C. Hartman, S. D. Hunter, J. R. Mattox, D. J. Thompson (NASA/GSFC), K. T. S. Brazier, G. Kanbach, H. A. Mayer-Hasselwander, C. von Montigny (MPE), E. Schneid (Grumman) and D. E. Kniffen (Hampden-Sydney Coll.)
69.09 Polar Cap Models of Gamma Ray Pulsars: Spectra and Pulse Profiles
J. K. Daugherty (UNCA) and A. K. Harding (NASA/GSFC)

Session 70. AGNs and Radio Galaxies II

Oral, Thursday, 10:30-12:00, Dwinelle 145

70.01 Host Galaxies of QSOs at High Redshift
J. Lowenthal, T. Heckman, M. Lehnert (JHU/STScI) and J. Elias (CTIO)
70.02 A Search for a Hidden Broad Line Region in Cygnus A
J. S. Miller and H. D. Tran (UCO/Lick Observatory)
70.03 1213+350 -- The Smallest Gravitational Lens or a New Class of Radio-Loud Active Galaxy?
W. Xu, A. C. S. Readhead, T. J. Pearson (Caltech), P. N. Wilkinson and A. Polatidis (NRAL, Jodrell Bank)
70.04 Characteristics of the Background Source in MG1131+0456, and Einstein Ring Gravitational Lens System
G. H. Chen and J. N. Hewitt (MIT)
70.05 The nuclear Disk of NGC 4261: HST Images and WHT Spectra
L. Ferrarese, H. C. Ford (JHU, STScI), W. Jaffe, F. v. d. Bosch (Leiden Observatory) and R. W. O'Connell (University of Virginia)
70.06 Near Infrared Line Strengths and Profiles for AGNs and Quasars
R.I. Thompson (Steward Obs./U. Arizona)
70.07 Multiwavelength Observations of Flat Radio Spectrum Quasars and Active Galaxies
S. D. Bloom, A. P. Marscher (BU) and W. K. Gear (ROE)
70.08 Interstellar Scintillation of the Intraday Variable Radio source 0917+624
B. J. Rickett (UC San Diego)
70.09 The MRC/1Jy Radio Source Survey
P.J. McCarthy, S.E. Persson (OCIW), W. van Breugel (IGPP/LLNL) and V.K. Kapahi (TIFR)

Session 71. Instruments and Techniques

Oral, Thursday, 10:30-12:00, Durham

71.01 The NASA High Resolution Microwave Survey
J. C. Tarter (SETI Institute) and S. Gulkis (JPL)
71.02 Improvement of IR Photometric Passbands
E. F. Milone, C. R. Stagg (RAO/U. Calgary) and A. T. Young (SDSU/ESO)
71.03 A 32 Megapixel Dual Color CCD Imaging System
S. Marshall, M. Pratt, C. Stubbs (CfPA/UCSB), C. Alcock, R. Allsman, T. Axelrod, D. Bennett, K. Cook, H. -S. Park (LLNL), C. Akerlof, S. Perlmutter, W. Sutherland (CfPA/UCB), K. Griest (CfPA/UCSD), K. Freeman, B. Peterson, P. Quinn and A. Rodgers (MSSSO)
71.04 Preliminary Results from the ALEXIS Ultrasoft X-ray Experiment
W. Priedhorsky, J. J. Bloch, B. Edwards, D. Roussel-Dupr\'{e}, B. W. Smith (LANL), O. H. W. Siegmund, T. Carone, S. Cully, J. Warren and J. Vallerga (UCB-SSL)
71.05 Hard X-ray All-Sky Imaging Using BATSE/CGRO
S. N. Zhang, G. J. Fishman, B. A. Harmon, W. S. Paciesas, B. C. Rubin, C. A. Meegan, C. A. Wilson and M. H. Finger ()
71.06 MILAGRO -- A TeV Air Shower Array
J. Goodman (U. Maryland), S. Barwick, S. D. Biller, A. Shoup, G. B. Yodh (U.C.Irvine), R. L. Burman, C. M. Hoffman, D. E. Nagle, V. D. Sandberg, D. M. S. C. Sinnis, D. D. Weeks, D. H. White (LANL), M. Cavalli-Sforza, D. G. Coyne, D. E. Dorfan, L. A. Kelley, S. Klein, D. A. Williams (U.C.Santa Cruz), C. Y. C. M. L. Chen, C. L. Dion, J. A. Goodman, T. J. Haines (U.Maryland), R. W. Ellsworth (George Mason U.), S. J. Freedman (Argonne N.L.), R. C. Lamb (Iowa St. U.), A. I. Mincer, P. Nemethy (New York U.), T. J. O'Neill, O. T. Tumer and A. Zych (U.C.Riverside)
71.07 The STScI FGS Team Optical Field Angle Distortion (OFAD) Reduction
L.G. Taff, M.G. Lattanzi, B. Bucciarelli and S.T. Holfeltz (STScI)
71.08 Oversampling Digital Interferometry for Reaching LIGO Sensitivity
L.N. Mertz (Palo Alto, CA)
71.09 Services and Data in the Astrophysics Data System
G. Eichhorn, S.S. Murray, M.J. Kurtz, C. Stern and T. Karakashian (SAO)

Session 72. HAD

Oral, Thursday, 10:30-12:00, Wheeler

72.01 The Holy Grail of Chinese Astronomy: The Sun-Moon-Five-Planet Conjunction in Yingshi (Pegasus) on March 5, 1953 BC
K.D. Pang (JPL) and J.A. Bangert (USNO)
72.02 We are Still Carrying on, Although it is Really Getting Tough: Lick Observtory in World War II
D.E. Osterbrock (UCO/Lick Obs., UCSC)
72.03 Harold F. Weaver: California Astronomer
J. C. Shields (Ohio State)

Session 73. Invited Talk

Oral, Thursday, 12:15-1:05, Zellerbach Auditorium

73.01 The Search for Primeval Galaxies
C. J. Pritchet (U. Victoria)

Session 74. Gamma-Ray Bursts

Oral, Thursday, 2:30-4:00, Zellerbach Auditorium

74.01 A Classical Gamma-Ray Burst Repeater?
R. E. Lingenfelter and V. Wang (UCSD)
74.02 ROSAT HRI Observation of the 5 March 1979 Gamma Ray Burst Site
R. E. Rothschild and R. E. Lingenfelter (UCSD)
74.03 COMPTEL Observations of GRB 930131
R. M. Kippen, A. Connors, M. McConnell, J. Ryan (UNH), W. Collmar, J. Greiner, G. Lichti, V. Sch\"onfelder, M. Varendorff (MPE), W. Hermsen, L. Kuiper (SRON-Leiden), L. Hanlon, O. R. Williams and C. Winkler (SSD/ESA)
74.04 EGRET Observations of Gamma-Ray Bursts
B. L. Dingus, P. Sreekumar, D. L. Bertsch, C. E. Fichtel, R. C. Hartman, S. D. Hunter, D. J. Thompson, G. Kanbach, H. A. Mayer-Hasselwander, C. von Montigny, M. Sommer, Y. C. Lin, P. L. Nolan, P. F. Michelson, J. Chiang, D. A. Kniffen, J. R. Mattox, E. J. Schneid, C. Kouveliotou, G. J. Fishman and K. Hurley ()
74.05 Search for Ultra-High-Energy Radiation from $\bf \gamma$-ray Bursts
D. A. Williams, M. Cavalli-Sforza, D. Coyne, D. Dorfan, L. Kelley, S. Klein, R. Schnee, T. Yang (U.C.Santa Cruz), S. Biller, P. Chumney, M. Harmon, A. Shoup, G. B. Yodh (U.C.Irvine), D. E. Alexandreas (U.C.Irvine, INFN-Padova), G. E. Allen, C. Y. Chang, M. L. Chen, C. Dion, J. A. Goodman, T. J. Haines, M. J. Stark (U.Maryland), G. M. Dion (U.Maryland, ICRR-Tokyo), D. Berley (U.Maryland, NSF), R. L. Burman, C. M. Hoffman, D. E. Nagle, D. M. Schmidt, C. Sinnis, D. D. Weeks (LANL), W. P. Zhang (LANL, NASA-GSFC), R. W. Ellsworth (George Mason U.) and J. -P. Wu (U.C.Riverside)
74.06 COMPTEL Observations of GRB 930309
J. M. Ryan, R. M. Kippen, M. McConnell, M. Varendorff (UNH), J. Greiner, V. Sch\"onfelder (MPE), W. Hermsen, L. Kuiper (SRON-Leiden), K. Bennett, L. Hanlon, C. Winkler (SSD/ESA), T. Spoelstra (Westerbork Radio Observatory), B. McNamara and T. Harrison (NMSU)
74.07 Cosmological Distance Scale to Gamma-Ray Bursts
W. J. Azzam, E. V. Linder and V. Petrosian (Stanford University)
74.08 Search for Gamma-Ray Burst Spectral Features in the Compton GRO BATSE Data
B.J. Teegarden, D. Palmer, T.L. Cline, B.E. Schaefer (NASA/GSFC), G.J. Fishman (NASA/MSFC) et al.
74.09 BATSE Observations of Gamma Ray Burst Spectral Evolution
D. Band, L. Ford, J. Matteson (UCSD), B. Schaefer, D. Palmer, B. Teegarden (GSFC), M. Briggs, W. Paciesas and G. Pendleton (UAH)

Session 75. Star Formation II

Oral, Thursday, 2:30-4:00, Zellerbach Playhouse

75.01D Magnetic Braking and Ambipolar Diffusion in Molecular Clouds: Selection of Core Masses and Angular Momenta
S. Basu and T. C. Mouschovias (U. Illinois)
75.02D Magnetocentrifugally Driven Winds from Rapidly Rotating Protostars
J. Najita (UCB)
75.03 A Near Infrared Study of the MonR2 Star Formation Region
E. M. Howard, J. L. Pipher and W. J. Forrest (Rochester)
75.04 Star-Forming Clumps on a Large Expanding Shell: Dense Cores in Mon R2
T. Xie (FCRAO/UMASS and JPL/Caltech), P. F. Goldsmith (FCRAO/UMASS and CORNELL U.) and W. Langer (JPL/Caltech)
75.05 Multiple Bipolar-Outflow Sources in NGC 7538/IRS 9
G. Nykreim and J. E. Carlstrom (Caltech)
75.06 Discovery of Interstellar Water Masers at 437, 439, and 471 GHz
G. J. Melnick, K. M. Menten (Harvard-Smithsonian Center for Astrophysics) and T. G. Phillips (Caltech)
75.07 First VLBI Observations of Extragalactic Water Vapor Maser Flares in IC10
A. L. Argon, L. J. Greenhill, M. J. Reid, J. M. Moran, K. M. Menten (CfA), C. Henkel (MPIfR) and M. Inoue (Nobeyama Radio Observatory)

Session 76. Keck

Oral, Thursday, 2:30-4:00, Dwinelle 155

76.01 The Current State of the W.M. Keck Observatory
J. Nelson (U.C.Berkeley)
76.02 Near Infrared Observations of the Environment of FSC10214+4724 with the Keck Telescope
K. Matthews (Caltech), J. Nelson (U.C.Berkeley), B. T. Soifer (Caltech), H. Boesgaard (CARA), J. R. Graham (U.C.Berkeley), W. Harrison, W. Irace (CARA), G. Jernigan (U.C.Berkeley), H. Lewis (CARA), S. Lin, G. Neugebauer (Caltech), M. Sirota, G. Smith (CARA) and C. Ziomkowski (Caltech)
76.03 Near Infrared Observations of the Highest Redshift Radio Galaxy, 4C41.17, with the W. M. Keck Telescope
J. R. Graham (UC Berkeley), K. Matthews, B. T. Soifer (Caltech), J. E. Nelson (UC Berkeley), W. Harrison (CARA), G. Jernigan (UC Berkeley), S. Lin, G. Neugebauer (Caltech), G. Smith (CARA) and C. Ziomkowski (Caltech)
76.04 Near Infrared Imaging with the Keck Telescope of Gravitational Lens Systems
G. Neugebauer, K. Matthews, S. Djorgovski (Caltech), J. R. Graham (U. C. Berkeley), W. Harrison (CARA), G. Jernigan (U. C. Berkeley), J. E. Larkin, C. R. Lawrence, S. Lin (Caltech), J. Nelson (U. C. Berkeley), G. Smith (CARA), B. T. Soifer and C. Ziomkowski (Caltech)
76.05 Deep Near Infrared Observations of the Field of z = 4.9 Quasar PC 1247+3406 with the Keck Telescope
B. T. Soifer (Caltech), K. Matthews (Caltech), S. G. Djorgovski (Caltech), J. R. Graham (U.C.Berkeley), W. Harrison (CARA), G. Jernigan (U.C.Berkeley), J. Larkin, S. Lin (Caltech), J. Nelson (U.C.Berkeley), G. Neugebauer (Caltech), G. Smith (CARA), J. D. Smith and C. Ziomkowski (Caltech)

Session 77. Cosmic Background Radiation

Oral, Thursday, 2:30-4:00, Dwinelle 145

77.01D The PYTHON Microwave Background Anisotropy Experiment: Instrumentation and Analysis
J. Ruhl, M. Dragovan, G. Novak, S. R. Platt, B. Crone (Dept. of Physics, Princeton University) and R. Pernic (Yerkes Observatory, University of Chicago)
77.02 Preliminary Results from the PYTHON Microwave Background Anisotropy Experiment
M. Dragovan, J. Ruhl, G. Novak, S. R. Platt, B. Crone (Dept. of Physics, Princeton University) and R. Pernic (Yerkes Observatory, University of Chicago)
77.03 A Comparison of the Cosmic Microwave and Cosmic X-Ray Backgrounds: Constraints on Local Sources of the Fluctuations Observed by COBE
S. P. Boughn (Haverford College) and K. Jahoda (NASA/GSFC)
77.04 The 170 GHz Survey Large Scale CMBR Anisotropy Measurement
K. Ganga (Princeton), E. Cheng (NASA/GSFC), S. Meyer (MIT) and L. Page (Princeton)
77.05 Results of the GSFC/MIT Medium Scale Anisotropy Measurement (MSAM)
J. Puchalla, C. Inman, S. Meyer (MIT), E. Cheng, D. Cottingham, D. Fixsen, P. Gentieu, M. Kowitt, R. Silverberg (GSFC) and L. Page (Princeton)
77.06 A Telescope for Observations of the Cosmic Microwave Background Anisotropy
G. S. Tucker (University of British Columbia), G. S. Griffin, H. T. Nguyen and J. B. Peterson (Princeton University)
77.07 Galaxy Cluster Evolution Using Hierarchical Peaks: A Probe of the Density Fluctuation Spectrum
S. T. Myers (Caltech) and J. R. Bond (CITA)
77.08 A Search for Diffuse Gamma Ray Emission with Implications for the Origin of Cosmic Rays above 10$^{14}$ eV
C. E. Covault, A. Borione, J. W. Cronin, B. E. Fick, K. G. Gibbs, T. A. McKay, B. J. Newport, R. A. Ong, L. J. Rosenberg (EFI,U of Chicago), M. Catanese, K. D. Green, J. Matthews, D. Nitz, D. Sinclair, J. C. van der Velde (U of Michigan) and D. B. Kieda (U of Utah)

Session 78. QSOs and Gravitational Lenses

Oral, Thursday, 2:30-4:00, Durham

78.01D The Extent and Content of Low Ionization Gas in Galaxies
D. S. Womble (CASS/UCSD and Caltech)
78.02 A Deep Survey of Fields around $z>4$ Quasars
E. Egami and E. Hu (Institute for Astronomy, University of Hawaii)
78.03 Time-delay Measurements in Gravitational Lens MG0414+0534
C. B. Moore and J. N. Hewitt (MIT)
78.04 X-ray Properties of Clusters which Contain Gravitationally Lensed Images
D. W. Saraniti and V. Petrosian (Stanford University)
78.05 Redshifts and Photometry for 5 clusters at z$\sim$0.3
M. J. Way (Univ of Missouri-St.Louis, Universidad Catolica de Chile), G. Hertling and L. Infante (Universidad Catolica de Chile)
78.06 Absorption Line Systems Toward Q0528-250
D.G. York, D. Welty (U. Chicago) and D.M. Meyer (NU)
78.07 The Clustering of QSO Absorption-line Systems
P. Francis and S. Veeraraghavan (Steward Observatory)
78.08 Lyman Alpha Clouds: A Consistent Distribution in Column Density
V. V. Chernomordik and L. M. Ozernoy$^2$ (GMU and USRA/NASA/GSFC)

Session 79. HAD/Huntington I

Oral, Monday, June 14, 2:30-4:00, Huntington Library

79.01 450 Revolutions Later: ``De revolutionibus" in Retrospect
O. Gingerich (CfA)
79.02 The Use of the Lunar Librations to Determine the Date of Leonardo da Vinci's Drawing of the Moon in the Codex Atlanticus 674 Verso
G. Reaves (USC)
79.03 Curvature of the Ellipse and Inverse-square Attraction
J. Faulkner (Lick Obs.)
79.04 California Girls: Pleiades Traditions in Native California
E.C. Krupp (Griffith Obs.)
79.05 Springfield in the West - Amateur Telescope Making in Southern California (1930-1955)
T.R. Williams (AAVSO)

Session 80. HAD/Huntington II

Oral, Tuesday, June 15, 2:30-4:00, Huntington Library

80.01 Some Destiny Not Decided: Edwin Powell Hubble as a Rhodes Scholar, 1910--1913
G. Christianson (ISU)
80.02 The Father of the Two Stellar Populations: Walter Baade, Observational Astrophysicist
D.E. Osterbrock (UCO/Lick Obs., UCSC)
80.03 Rudolph Minkowski, Walter Baade, and Early Radio Astronomy
W.T. Sullivan III (U. Washington)
80.04 Mount Hamilton's Lady Bountiful: Elizabeth Ballard Campbell
D.E. Schaumberg (Shane Archives, Lick Obs.) and D.E. Osterbrock (UCO/Lick Obs., UCSC)
80.05 Russell Travels West
D.H. DeVorkin (NASM/SI)

Session 81. HAD/Huntington III

Oral, Tuesday, June 15, 2:30-4:00, Huntington Library

81.01 The Many Lives of a Horizontal Solar Telescope
R.L. Eklund (Mt. Wilson Institute)
81.02 J.C. Kapteyn, G.E. Hale and Mt. Wilson (1908-1914)
R Paul (Dickinson College)
81.03 Annie Jump Cannon: Life after The Henry Draper Catalogue
B. L. Welther (CfA)
81.04 Gaunt and his Factor
R.H. Garstang (JILA, Univ. Colorado, NIST)
81.05 Bengt Edlen and the Coronal-Line Problem, 1939-1945
K. Hufbauer (UC Irvine)
81.06 Photographing the Solar Corona without an Eclipse: The Forgotten Efforts of William Huggins
B.J. Becker (SWRL)