Astrophysics of Gaseous Nebulae
- D. Osterbrock, T. Gull
- Physics
- 1 April 1976
Long γ-ray bursts and core-collapse supernovae have different environments
- A. Fruchter, A. Levan, S. Woosley
- PhysicsNature
- 20 March 2006
When massive stars exhaust their fuel, they collapse and often produce the extraordinarily bright explosions known as core-collapse supernovae. On occasion, this stellar collapse also powers an even…
HST STIS Spectroscopy of the Triple Nucleus of M31: Two Nested Disks in Keplerian Rotation around a Supermassive Black Hole
- R. Bender, J. Kormendy, B. Woodgate
- Physics, Geology
- 20 September 2005
We present Hubble Space Telescope (HST) spectroscopy of the nucleus of M31 obtained with the Space Telescope Imaging Spectrograph (STIS). Spectra that include the Ca II infrared triplet (λ ≃ 8500 Å)…
The Space Telescope Imaging Spectrograph Design
- B. Woodgate, R. Kimble, D. Weistrop
- Physics
- 1 October 1998
The Space Telescope Imaging Spectrograph (STIS) instrument was installed on the Hubble Space Telescope (HST) during the second servicing mission, in 1997 February. Four bands cover the wavelength…
Latitude-dependent Effects in the Stellar Wind of η Carinae
- N. Smith, K. Davidson, T. Gull, K. Ishibashi, D. Hillier
- Physics
- 20 January 2003
The Homunculus reflection nebula around η Carinae provides a rare opportunity to observe the spectrum of a star from more than one direction. In the case of η Car, the nebula's geometry is known well…
Observations of the Crab Nebula and Its Pulsar in the Far-Ultraviolet and in the Optical
- J. Sollerman, P. Lundqvist, G. Sonneborn
- Physics
- 18 February 2000
We present far-UV observations of the Crab Nebula and its pulsar made with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope. Broad, blueshifted absorption arising in the…
Mapping the Kinematics of the Narrow-Line Region in the Seyfert Galaxy NGC 4151
- V. Das, D. Crenshaw, D. Weistrop
- Physics
- 5 May 2005
Using the Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph (STIS), observations of the [O III] emission from the narrow-line region (NLR) of NGC 4151 were obtained and radial…
M33: A Galaxy with No Supermassive Black Hole
- K. Gebhardt, T. Lauer, D. Weistrop
- Physics
- 6 July 2001
Galaxies that contain bulges appear to contain central black holes whose masses correlate with the velocity dispersion of the bulge. We show that no corresponding relationship applies in the pure…
η Carinae across the 2003.5 Minimum: Spectroscopic Evidence for Massive Binary Interactions
- K. Nielsen, M. Corcoran, D. Lindler
- Physics
- 22 January 2007
We have analyzed high spatial, moderate spectral resolution observations of η Carinae (η Car) obtained with the STIS from 1998.0 to 2004.3. The data were obtained at discrete times covering an entire…
The Shape and Orientation of the Homunculus Nebula Based on Spectroscopic Velocities
- K. Davidson, N. Smith, T. Gull, K. Ishibashi, D. Hillier
- Physics
- 1 March 2001
Doppler velocities give information about the three-dimensional shape and orientation of the bipolar ejecta of η Car. We report slit spectroscopy obtained using the Space Telescope Imaging…
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