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Modeling H2 Fluorescence in Planetary Atmospheres with Partial Frequency Redistribution
R. E. Lupu, P. D. Feldman, S. R. McCandliss +1
We present the modeling of partial frequency redistribution (PRD) effects for the fluorescent emission lines of molecular hydrogen, the general computational approximations, and th…
Project Lyman
Stephan R. McCandliss, Jeffrey W. Kruk, William P. Blair +20
We explore the design of a space mission, Project Lyman, which has the goal of quantifying the ionization history of the universe from the present epoch to a redshift of z ~ 3. Obs…
Calibration and flight performance of the long-slit imaging dual order spectrograph
Roxana E. Lupu, Stephan R. McCandliss, Brian Fleming +3
We present a preliminary calibration and flight performance of the Long-Slit Imaging Dual Order Spectrograph (LIDOS), a rocket-borne instrument with a large dynamic range in the 90…
The Fourth Positive System of Carbon Monoxide in the Hubble Space Telescope Spectra of Comets
Roxana E. Lupu, Paul D. Feldman, Harold A. Weaver +1
The rich structure of the Fourth Positive System (A-X) of carbon monoxide accounts for many of the spectral features seen in long slit HST-STIS observations of comets 153P/Ikeya-Zh…
A Low-Mass H2 Component to the AU Microscopii Circumstellar Disk
Kevin France, Aki Roberge, Roxana E. Lupu +2
We present a determination of the molecular gas mass in the AU Microscopii circumstellar disk. Direct detection of a gas component to the AU Mic disk has proven elusive, with upper…
Ultraviolet Spectroscopy of Comet 9P/Tempel 1 with Alice/Rosetta during the Deep Impact Encounter
Paul D. Feldman, S. Alan Stern, Andrew J. Steffl +5
We report on spectroscopic observations of periodic comet 9P/Tempel 1 by the Alice ultraviolet spectrograph on the Rosetta spacecraft in conjunction with NASA's Deep Impact mission…