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Physical Conditions in Circumstellar Gas surrounding SN 1987A 12 Years After Outburst
Stephen P. Maran, George Sonneborn, Chun S. J. Pun +3
Two-dimensional spectra of Supernova 1987A were obtained on 1998 November 14-15 (4282 days after outburst) with the Space Telescope Imaging Spectrograph (STIS) on board the Hubble…
STIS Echelle Observations of NGC 4151: Variable Ionization of the Intrinsic UV Absorbers
D. M. Crenshaw, S. B. Kraemer, J. B. Hutchings +5
We present echelle observations of the intrinsic UV absorption lines in the Seyfert galaxy NGC 4151, which were obtained with the Space Telescope Imaging Spectrograph (STIS) on the…
A Kinematic Model for the Narrow-Line Region in NGC 4151
D. M. Crenshaw, S. B. Kraemer, J. B. Hutchings +6
We present a simple kinematic model for the narrow-line region (NLR) of the Seyfert 1 galaxy NGC 4151, based on our previous observations of extended [O III] emission with the Spac…
Observations of the Crab Nebula and its pulsar in the far-ultraviolet and in the optical
Jesper Sollerman, Peter Lundqvist, Don Lindler +5
We present HST/STIS far-UV observations of the Crab nebula and its pulsar. Broad, blueshifted absorption arising in the nebula is seen in C IV 1550, reaching about 2500 km/s. This…