Tuesday Titles

Program overview

TUESDAY TITLES

Session 20. Astro 2

Display, Tuesday, 9:20am - 6:30pm, South Exhibit Hall

20.01 The HUT Spectrum of Fairall 9
W. Zheng, G. A. Kriss, A. F. Davidsen and J. W. Kruk (JHU)
20.02 HUT Observations of the Far-Ultraviolet Spectrum of MKN 421
J. W. Kruk, A. F. Davidsen and G. A. Kriss (JHU)
20.03 Far-Ultraviolet Observations of M83 Using the Hopkins Ultraviolet Telescope
J. -C. Liu, A. F. Davidsen (JHU) and H. C. Ferguson (STScI)
20.04 Hopkins Ultraviolet Telescope Observations of Six E and S0 Galaxies
T. M. Brown (JHU), H. C. Ferguson (STScI) and A. F. Davidsen (JHU)
20.05 A Search for Far-UV Emission from Hot Gas in the Halo of NGC 4631
H. Ferguson (STScI), A. F. Davidsen and W. V. Dixon (JHU)
20.06 Hopkins Ultraviolet Telescope Observations of Nova Circini 1995 and Nova Aquilae 1995
B. W. Greeley, W. P. Blair (JHU) and K. S. Long (STScI)
20.07 HUT Observations of the Puppis A Supernova Remnant
W. P. Blair (JHU), J. C. Raymond (CfA), K. S. Long (STScI) and G. A. Kriss (JHU)
20.08 HUT Observations of the White Dwarf in U Geminorum
K. S. Long (STScI), J. C. Raymond (CfA), W. P. Blair (JHU) and J. A. Mattei (AAVSO)
20.09 The First Medium-Resolution Far-Ultraviolet Photometric Atlas of Hot Star Spectra
R. H. Buss Jr., J. W. Kruk (JHU) and H. C. Ferguson (STScI)
20.10 Astro-2/UIT Far-Ultraviolet Imaging of Non-Normal Galaxies
S. G. Neff (NASA/GSFC/LASP), T. P. Stecher (NASA/GSFC/LASP) and IT Science Team UIT Science Team
20.11 {\em UIT\/}'s View of the Magellanic Clouds During Astro-2
J. W. Parker (Hughes STX, GSFC/LASP), T. P. Stecher (GSFC/LASP) and he UIT Team The UIT Team
20.12 UIT Observations of Open and Globular Clusters
R. Parise (CSC/GSFC/LASP), T. P. Stecher (NASA/GSFC/LASP) and IT Team UIT Team
20.13 Astro-2/UIT Observations of Supernova Remnants
R. H. Cornett (Hughes STX,GSFC/LASP), T. P. Stecher (GSFC/LASP) and IT Team UIT Team
20.14 Ultraviolet Imaging Telescope Measurements of the Light Echo from the Shock Breakout Flash of SN 1987A
A. P. S. Crotts (Columbia U.), T. P. Stecher (NASA Goddard SFC) and he UIT Science Team The UIT Science Team
20.15 The WUPPE/Astro-2 Galactic Interstellar Polarization Program
C. M. Anderson, A. J. Weitenbeck, A. D. Code, M. R. Meade, B. L. Babler, N. E. Zellner, K. S. Bjorkman, R. J. Edgar, G. K. Fox, J. J. Johnson, K. H. Nordsieck, W. T. Sanders (U. Wisconsin), O. L. Lupie (STScI), R. E. Schulte-Ladbeck, J. Herald (U. Pittsburgh) and G. C. Clayton (U. Colorado)
20.16 First Look at New WUPPE/Astro-2 Observations of Hot Stars
K. S. Bjorkman, A. D. Code, M. R. Meade, B. L. Babler, N. E. Zellner, C. M. Anderson, R. J. Edgar, G. K. Fox, J. J. Johnson, K. H. Nordsieck, W. T. Sanders, A. J. Weitenbeck (U. Wisconsin), O. L. Lupie (STScI), R. E. Schulte-Ladbeck, J. Harold (U. Pittsburgh) and G. C. Clayton (U. Colorado)
20.17 Determining the Velocity and Density Structure of Circumstellar Envelopes by Spectropolarimetry
K. Wood and J. E. Bjorkman (U. Wisconsin)
20.18 Ultraviolet Spectropolarimetry of Three Classical Novae During Outburst
J. J. Johnson, C. M. Anderson, K. S. Bjorkman, A. D. Code, G. K. Fox, A. J. Weitenbeck, K. Wood, R. J. Edgar, W. Sanders, B. Babler, M. Meade, N. Zellner (Univ. of Wisconsin, Space Astronomy Laboratory), G. C. Clayton (Univeristy of Colorado/CASA), R. Schulte-Ladbeck (Univ. of Pittsburgh) and O. L. Lupie (STSci)
20.19 Ultraviolet/Visible Spectropolarimetry of Interacting Binaries by WUPPE and Wisconsin Pine Bluff Observatory
K. H. Nordsieck, G. K. Fox, A. D. Code, C. M. Anderson, B. L. Babler, K. S. Bjorkman, R. J. Edgar, J. J. Johnson (Space Astronomy Laboratory/U. Wisconsin), O. L. Lupie (STScI), M. R. Meade, W. T. Sanders, A. J. Weitenbeck, N. E. Zellner (Space Astronomy Laboratory/U. Wisconsin), J. Harold, R. E. Schulte-Ladbeck (U. Pittsburgh) and G. C. Clayton (CASA/U. Colorado and U. Toledo)
20.20 The First Ultraviolet Linear Spectropolarimetry of Mars
M. J. Wolff (CASA/U. Colorado and U. Toledo), G. K. Fox, A. D. Code, C. M. Anderson, B. L. Babler, K. S. Bjorkman, R. J. Edgar, J. J. Johnson (Space Astronomy Laboratory/U. Wisconsin), O. L. Lupie (STScI), M. R. Meade, W. T. Sanders, A. J. Weitenbeck, N. E. Zellner (Space Astronomy Laboratory/U. Wisconsin), J. Harold, R. E. Schulte-Ladbeck (U. Pittsburgh) and G. C. Clayton (CASA/U. Colorado)

Session 21. Stellar Spectroscopy, Atmospheres, Models, Intrinsic Variables, Theory, Part I

Display, Tuesday, 9:20am - 6:30pm, South Exhibit Hall

21.01 Stellar Rubella: Starspots on F, G and K Stars of Different Ages and Rotation Periods
E. F. Guinan, L. E. DeWarf, S. Messina and G. P. McCook (Villanova University)
21.02 ASCA observations of X-ray flares on Proxima Centauri
A. Antunes (HSTX/GSFC), B. Haisch (Lockheed) and J. H. M. M. Schmitt (MPI)
21.03 Simultaneous EUVE and IUE Flares from the Flare Star EV Lac
B. H. Pomerance, B. Abbott and C. Ambruster (Villanova University)
21.04 First Detection of X-ray Variability of $\eta$ Carinae
M. F. Corcoran (LHEA/USRA), G. L. Rawley (ARC), J. H. Swank, R. Petre (LHEA) and J. H. M. M. Schmitt (MPE)
21.05 Solar Irradiance and CA K Plage
J. C. Lopresto (Dept. of Physics, Edinboro University of PA)
21.06 Ionization stratification in the winds of Wolf-Rayet stars -- A sample of the WN sequence
J. E. Herald, R. E. Schulte-Ladbeck (U. Pittsburgh), P. Eenens (INAOE, Mexico) and P. Morris (CASA)
21.07 NLTE Modeling of the Chromosphere of a Cool Giant
L. Ensman and H. Johnson (Indiana U.)
21.08 Non-LTE Line Blanketing in Stars With Extended Outflowing Atmospheres.
D. J. Hillier and D. L. Miller (U. of Pittsburgh)
21.09 Chromospheric Activity and Age of Solar-Type Stars
S. L. Baliunas (CfA, TSU), R. A. Donahue, W. Soon (CfA), R. Gilliland and D. R. Soderblom (STScI)
21.10 Meridional Circulation in Radiative Diffusion Zones of Rotating Stars
M. Maheswaran (U Wisconsin Centers)
21.11 Estimated Lifetimes of Chromospheric Active Regions and Active Region Complexes
A. K. Dobson (Whitman College), R. A. Donahue (Center for Astrophysics) and S. L. Baliunas (Center for Astrophysics)
21.12 On the Numerical Solution of the Nonradial Stellar Pulsation Equations Including Rapid Rotation
M. J. Clement (University of Toronto)
21.13 Models of FeII emission in infrared and optical wavelength range
E. M. Verner, G. J. Ferland, K. T. Korista and D. A. Verner (University of Kentucky, Lexington, KY)
21.14 Equatorial Wind Compression Effects Across the HR-Diagram
R. Ignace, J. P. Cassinelli and J. E. Bjorkman (U. of Wisconsin-Madison)

Session 22. Stellar Spectroscopy, Atmospheres, Models, Intrinsic Variables, Theory, Part II

Display, Tuesday, 9:20am - 6:30pm, South Exhibit Hall

22.01 Mass Loss on the Red Giant Branch and its effects on the Extreme Horizontal Branch
N. D'Cruz (UVa), B. Dorman (NASA/Goddard), R. Rood and R. O'Connell (UVa)
22.02 Heavy Element Abundances in a Metal-Poor Halo Star: A Comparison between Theory and HST Observations
D. L. Burris, J. J. Cowan (U. of OK), C. Sneden (U. of TX) and J. W. Truran (U. of Chicago)
22.03 The r-Process Enriched Halo Star CS22892-052
C. Sneden (U. Texas), A. McWilliam, G. W. Preston (Carnegie Obs.) and J. J. Cowan (U. Oklahoma)
22.04 An Empirical HR Diagram for WN Stars
S. R. McCandliss (CAS -- JHU)
22.05 Stellar Wind and Keplerian Disk Interactions in Hot Stars
J. E. Bjorkman and K. Wood (U. Wisconsin)
22.06 The Iron Project: Atomic Data for the Iron Peak Elements
A. K. Pradhan, H. L. Zhang, J. Peng, S. N. Nahar and M. A. Bautista (Department of Astronomy, The Ohio State University)
22.07 Ultraviolet Line Variability in SS Cygni
C. Baluta (Penn State University), J. A. Nousek (Penn State University) and C. Mansperger (Goddard)
22.08 On the Period and Spectral Range of IRC-20062, a New Mira Variable
R. F. Wing (Ohio State U.) and K. L. Kelley (Ohio Wesleyan U.)
22.09 3 Vulpeculae, a 53 Persei Star
R. Dukes, W. Kubinec, A. Kubinec (College of Charleston, SC) and S. J. Adelman (The Citadel, SC)
22.10 UBVRI Photometry of the Solar Neighborhood Pleiades-Age K Dwarfs HD 17925 and HD 1405
B. P. Abbott, B. H. Pomerance and C. W. Ambruster (Villanova University)
22.11 Variable Polarization of the Be Star Lambda Eridani: 1986--94
D. McDavid (Limber Obs.) and M. Frueh (McDonald Obs.)
22.12 The Radial Velocity Variations in Iota Herculis
C. L. Mulliss and N. D. Morrison (Ritter Obs., U. of Toledo)
22.13 Identification and Evolution of Variance Morphologies in Ca II H+K Time Series
R. A. Donahue (CfA), A. K. Dobson (Whitman College) and S. L. Baliunas (CfA)
22.14 The Iron Abundance of Iota Herculis From Ultraviolet Iron Lines
J. Grigsby (Wittenberg U.), C. Mulliss (U. Toledo) and G. Baer (Indiana U.)
22.15 Observations of the UV-Bright Star BS in 47 Tucanae with the Hopkins Ultraviolet Telescope
W. V. Dixon, A. F. Davidsen (JHU) and H. C. Ferguson (STScI)
22.16 The Ultraviolet Spectral Morphology of a Sample of B Supergiants in the Small Magellanic Cloud
R. C. McNeil, A. L. Borchers (N. Kentucky Univ.), G. Sonneborn and R. P. Fahey (NASA/GSFC)
22.17 {\it IUE} Observations of Rotational Modulation of OB Star Winds
D. Massa (ARC), R. K. Prinja (UCL) and A. W. Fullerton (Max-Planck-Institut, M\"unchen)
22.18 Rotation, Lithium Abundance and Chromospheric Emission in M34 Members
D. Fischer, B. F. Jones, M. D. Shetrone (Lick Observatory) and D. R. Soderblom (STScI)
22.19 Correlations of Lithium Abundance with T$_{eff}$ and [Fe/H] on the Spite Plateau
T. C. Beers (Michigan State), S. G. Ryan (Anglo-Australian Obs), C. P. Deliyannis (Yale) and J. A. Thorburn (Chicago)
22.20 Fe II Line Profiles as Stellar Wind Diagnostics in M Giant and Supergiant Stars
K. G. Carpenter (LASP-NASA/GSFC) and R. D. Robinson (CSC@LASP-NASA/GSFC)
22.21 International Ultraviolet Explorer Atlas of B-Type Spectra From 1200 to 1900 \AA
J. W. Parker (NRC and Hughes STX, GSFC/LASP), N. R. Walborn (STScI), J. S. Nichols (CSC, GSFC) and T. R. Gull (GSFC/LASP)

Session 23. Low-Luminosity AGNs

Display, Tuesday, 9:20am - 6:30pm, South Exhibit Hall

23.01 The escape of high energy gamma-ray from the radiation field of the accretion disk in AGN
C. K. Lau and K. S. Cheng (Phy/HKU)
23.02 Faint AGNs in the Nuclei of MDS Galaxies
V. Sarajedini (Steward Obs., U. of Arizona), R. F. Green (NOAO), R. E. Griffiths and K. Ratnatunga (JHU)
23.03 The Spectral Energy Distribution of Seyfert 2, Liner, Starbust and Normal Galaxies
H. R. Schmitt (STScI and IF-UFRGS) and A. L. Kinney (STScI)
23.04 {\bf Superwind Outflows in Seyfert Galaxies? : Large-Scale Radio Maps of an Edge-On Sample}
E. Colbert, J. Gallimore (STScI and UMD), S. Baum and C. O'Dea (STScI)
23.05 Nuclear Profiles of Markarian Galaxies and Seyfert Unification
C. H. Nelson, J. W. MacKenty (STScI), S. M. Simkin (MSU) and R. E. Griffiths (JHU)

Session 24. AGNs/QSOs - High Luminosity

Display, Tuesday, 9:20am - 6:30pm, South Exhibit Hall

24.01 ROSAT Spectra of QSOs in the Large Bright Quasar Survey
P. J. Green (SAO), N. Schartel (MPE), S. F. Anderson (UWa), P. C. Hewett (IoA), C. B. Foltz (UAz), B. Margon (UWa), W. Brinkmann, H. Fink and J. Tr\"umper (MPE)
24.02 Results from the Las Campanas Program to Monitor QSO Optical Brightness Variations
C. J. Sirola, D. A. Turnshek, E. Monier, S. Sheaffer (University of Pittsburgh), R. J. Weymann, S. Morris, O. Duhalde, W. Krzeminski, W. Kunkel and M. Roth (OCIW)
24.03 On the Origin of the NV Broad Emission Line in QSO Spectra
L. Lee, D. A. Turnshek and S. Sherer (Univ. of Pittsburgh)
24.04 Ultraviolet Continuum of the Quasar PKS 0405$-$123: Lyman Edge in the Accretion Disk Spectrum
G. Lee, G. A. Kriss, A. F. Davidsen and W. Zheng (JHU)
24.05 The Excitation Mechanism of Strong FE II Emission from Quasars at High Redshift
J. Peng and A. K. Pradhan (Department of Astronomy, The Ohio State University)
24.06 Abundances in broad-line regions of QSOs
J. Merleau (University of Victoria, Dept. of Astronomy, Box 3055, MS 770, Victoria, BC, V8W 3P6)
24.07 The Morphological Selection Criterion of the US Survey.
P. D. Usher (Penn State), K. J. Mitchell (GSC) and K. Huang (Nanjing)
24.08 Simulated VLBI Images From Numerical Hydrodynamic Jet Models
A. J. Mioduszewski, P. A. Hughes (U. Michigan) and G. C. Duncan (Bowling Green State U.)
24.09 The Parsec-Scale Radio Structure of X-ray Selected BL Lacs
R. I. Kollgaard, E. D. Feigelson (Penn State) and D. C. Gabuzda (Lebedev Physical Institute)
24.10 Keck Spectropolarimetry of the Radio Galaxy 3C 234
H. D. Tran and M. H. Cohen (Caltech)
24.11 Discovery of Inverse Compton X-rays in Radio Lobes
E. D. Feigelson, S. A. Laurent-Muehleisen, R. I. Kollgaard (Penn State) and E. B. Fomalont (NRAO)
24.12 A Fokker-Planck model of Dense Rotating Stellar Clusters
J. Girash (CfA)

Session 25. QSO Absorption-Line Studies with HST and Keck - I

Oral, Tuesday, 2:00pm - 5:30pm, Allegheny I and II

Note: Session 25 is in the Afternoon

25.01 Investigation of the Metal Content of Damped Lyman Alpha Systems with the Keck 10 m Telescope
J. X. Prochaska and A. M. Wolfe (UCSD)
25.02 Types of Trees in the Lyman Alpha Forest
D. Kirkman and D. Tytler (CASS/UCSD)
25.03 The Gunn-Peterson Effect and Estimates of a Neutral Gas Fraction in the Intergalactic Space
V. Khersonsky (University of Pittsburgh)
25.04 Halo Gas Absorption
B. D. Savage (Dept. of Astronomy, Univ. of Wisconsin-Madison)
25.05 Probing Sightlines Through Nearby Galaxies
D. V. Bowen (Space Telescope Science Institute)
25.06 Discovery of Ly$\alpha$ Clouds in Cosmic Voids
J. T. Stocke, J. M. Shull, S. V. Penton (CASA, University of Colorado), M. Donahue (STScI) and C. Carilli (Leiden)
25.07 The Gaseous Extent of Galaxies and the Origin of Ly$\alpha$ Absorption Systems
K. M. Lanzetta (State University of New York at Stony Brook)
25.08 Ly$\alpha$ Absorbers along the 3C273 sightline
S. L. Morris (Dominion Astrophysical Observatory)
25.09 The Nature of Metal-Line Absorbers, $0.2 < z < 1.6$
M. Dickinson (STScI) and C. Steidel (MIT)
25.10 Future Observational Capabilities with HST/STIS
B. E. Woodgate (NASA/Goddard Space Flight Center)

Session 26. The Dynamics of Large Scale Structure - I

Oral, Tuesday, 8:30am - 12:30pm, Allegheny III

26.01 Introduction to Recent Progress in Understanding Dynamics of Large-Scale Structure
A. L. Melott
26.02 Gravitational Simulations of Cosmic Structure Formation
E. Bertschinger (MIT)
26.03 Lagrangian methods for understanding non-linear dynamics
S. Matarrese (Physics Department `G. Galilei', University of Padova, I-35131, Padova ITALY)
26.04 Cosmological Distortions in Redshift Space
B. S. Ryden (OSU)

Session 27. The Space VLBI Mission VSOP

Oral, Tuesday, 8:30am - 12:30pm, Westmoreland

27.01 VLBI in Space: An Introduction
B. F. Burke (MIT)
27.02 The VLBI Space Observatory Programme (VSOP) and itsScientific Goals
H. Hirabayashi (ISAS)
27.03 Key Science Programs of the VSOP Space VLBI Mission
R. A. Preston (JPL)
27.04 The VSOP Announcement of Opportunity: Information for U.S. Proposers
A. B. Wiercigroch (JPL)
27.05 Source Selection for VSOP: Lessons Learned from theTDRSS Space VLBI Demonstrations
J. S. Ulvestad (JPL)
27.06 Software Packages to Aid VSOP Proposers
D. W. Murphy (JPL)
27.07 Choosing a Co-Observing Array of Ground Radio Telescopes for VSOP
D. L. Meier (JPL)
27.08 Correlation and Imaging of Space VLBI Observations
J. D. Romney (NRAO)

Session 28. QSO Absorption-Line Studies with HST and Keck - II

Oral, Tuesday, 8:30am - 12:30pm, Allegheny I and II

Note: Session 28 is in the Morning

28.01 The Hubble Space Telescope Quasar Absorption Survey: A Census of Absorption Lines at Low Redshift
B. T. Jannuzi (National Optical Astronomy Observatories)
28.02 Recent Keck HIRES Results
W. Sargent (California Institute of Technology)
28.03 The Proximity Effect and the UV Radiation Background
L. Lu (Caltech)
28.04 Lyman Alpha Forest Cloud Sizes
N. Dinshaw (Steward Observatory)
28.05 Redshift Evolution of Lyman Limit Absorption in the Spectra of a Large Sample of Quasars
A. Boksenberg (Royal Greenwich Observatory)
28.06 Metal-rich Systems
J. Bergeron (ESO)
28.07 Constraints on Ly$\alpha$ Forest Cloud and Metal-Line Cloud Sizes and Shapes from HST-FOS Spectra of the Gravitationally Lensed QSO H1413+1143
E. M. Monier, D. A. Turnshek (University of Pittsburgh) and O. L. Lupie (STScI/CSC)
28.08 The Evolution of the Damped Ly-alpha Systems
S. Rao (University of Pittsburgh)
28.09 High Redshift Damped Lyman-Alpha Systems: Implications for Galaxy Formation
L. J. Storrie-Lombardi (U. C. San Diego)

Session 29. The Dynamics of Large Scale Structure - II

Oral, Tuesday, 2:00pm - 5:30pm, Allegheny III

29.01 Large Scale Coherent Structures in the Universe
L. Kofman (Institute for Astronomy, University of Hawaii)
29.02 Recovering Initial Conditions from Present-Day Structure
D. H. Weinberg (Ohio State University)
29.03 Towards Understanding Large-Scale Structure: Approximations for Gravitational Clustering
S. F. Shandarin (University of Kansas)
29.04 Redshift-Space versus Real Space: A Dynamical Probe of Fundamental Cosmological Parameters
K. B. Fisher (Institute for Advanced Study)

Session 30. First Results from Astro 2

Oral, Tuesday, 2:00pm - 5:30pm, Westmoreland

30.01 First Results from the Hopkins Ultraviolet Telescope on Astro-2
A. F. Davidsen (JHU)
30.02 HUT Observations of the Non-Radiative Shock Wave of SN1006
J. C. Raymond (CfA), W. P. Blair (JHU) and K. S. Long (STScI)
30.03 Lyman Spectroscopy of Hot DA White Dwarfs
D. S. Finley (Eureka Scientific, Inc.)
30.04 HUT Observations of the Lyman Continuum in Starburst Galaxies
C. Leitherer, H. Ferguson (STScI) and T. Heckman (JHU)
30.05 Wisconsin Ultraviolet PhotoPolarimeter Experiment - A First Report of Observations and Preliminary Results from the Astro-2 Mission
A. D. Code, C. M. Anderson, B. L. Babler, K. S. Bjorkman, R. J. Edgar, G. K. Fox, J. J. Johnson, M. R. Meade, W. T. Sanders, A. J. Weitenbeck, N. E. Zellner (University of Wisconsin) and O. L. Lupie (STScI)
30.06 Astro-2 Observations of Ultraviolet Polarization and Extinction of Interstellar Dust in the LMC
G. C. Clayton, J. Green, M. J. Wolff (CASA, University of Colorado), A. D. Code, C. M. Anderson, A. J. Weitenbeck (University of Wisconsin), A. F. Davidsen (The Johns Hopkins University), he WUPPE Science Team The WUPPE Science Team (University of Wisconsin) and he HUT Science Team The HUT Science Team (The Johns Hopkins University)
30.07 Observations of Symbiotic Stars with the Astro-2 Mission
B. R. Espey (JHU/U. Pitt.), R. E. Schulte-Ladbeck (U. Pitt.), G. A. Kriss (JHU), F. W. Hamann III (CASS, UCSD), J. J. Johnson (U. Wisconsin, Madison) and H. M. Schmidt (MSSO)
30.08 A Reconnaissance of the 900-1200 A Spectra of Early O Stars in the Magellanic Clouds
N. R. Walborn, K. S. Long (STScI), R. -P. Kudritzki and D. J. Lennon (Munich Univ.)
30.09 Astro-2 Observations of Wolf-Rayet stars
R. E. Schulte-Ladbeck, D. J. Hillier and J. E. Herald (U. Pittsburgh)