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Detection of circumstellar material in a normal Type Ia Supernova
F. Patat, P. Chandra, R. Chevalier +19
Type Ia supernovae are thought to be thermonuclear explosions of accreting white dwarfs that reach a critical mass limit. Despite their importance as cosmological distance indicato…
Central stars of planetary nebulae in the Galactic bulge
P. J. N. Hultzsch, J. Puls, R. H. Mendez +4
Optical high-resolution spectra of five central stars of planetary nebulae (CSPN) in the Galactic Bulge have been obtained with Keck/HIRES in order to derive their parameters. Sinc…
Spitzer Observations of M83 and the Hot Star, H II Region Connection
Robert H. Rubin, Janet P. Simpson, Sean W. J. Colgan +6
We have undertaken a program to observe emission lines of SIV 10.5, NeII 12.8, NeIII 15.6, & SIII 18.7 um in a number of extragalactic HII regions with the Spitzer Space Telescope.…