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13 papers · 1 filter
Comparative Direct Analysis of Type Ia Supernova Spectra. III. Premaximum
David Branch, M. A. Troxel, David J. Jeffery +8
A comparative study of spectra of 21 Type Ia supernovae (SNe Ia) obtained about one week before maximum light, and 8 spectra obtained 11 or more days before maximum, is presented.…
3D Radiative Hydrodynamics for Disk Stability Simulations: A Proposed Testing Standard and New Results
Aaron C. Boley, Richard H. Durisen, Aake Nordlund +1
Recent three-dimensional radiative hydrodynamics simulations of protoplanetary disks report disparate disk behaviors, and these differences involve the importance of convection to…
Interstellar Iron and Silicon Depletions in Translucent Sight Lines
Adam Miller, J. T. Lauroesch, Ulysses J. Sofia +2
We report interstellar FeII and SiII column densities toward six translucent sight lines (A_V >~ 1) observed with the Space Telescope Imaging Spectrograph (STIS). The abundances we…
The Homogeneity of Interstellar Elemental Abundances in the Galactic Disk
Stefan I. B. Cartledge, J. T. Lauroesch, David M. Meyer +1
We present interstellar elemental abundance measurements derived from Space Telescope Imaging Spectrograph echelle observations of 47 sight lines extending up to 6.5 kpc through th…
FUSE Measurements of Far Ultraviolet Extinction. II. Magellanic Cloud Sight Lines
Stefan I. B. Cartledge, Geoffrey C. Clayton, Karl D. Gordon +8
We present an extinction analysis of 9 paths through the LMC and SMC based on FUSE observations. To date, just two LMC sight lines have probed dust grain composition and size distr…
FUSE Measurements of Far Ultraviolet Extinction. I. Galactic Sight Lines
U. J. Sofia, M. J. Wolff, B. Rachford +8
We present extinction curves that include data down to far ultraviolet wavelengths (FUV; 1050 - 1200 A) for nine Galactic sight lines. The FUV extinction was measured using data fr…