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Infrared Observations of Neutron-Capture Elements in Planetary Nebulae
N. C. Sterling, H. L. Dinerstein
We present results from an ongoing survey of the infrared emission lines [Kr III] 2.199 and [Se IV] 2.287 micron in Galactic planetary nebulae (PNe). Krypton and selenium may be pr…
Absorption-Line Spectroscopy of Planetary Nebulae with FUSE: Probing the Molecular, Atomic, and Ionized Gas
Harriet L. Dinerstein, N. C. Sterling, Charles W. Bowers
The central stars of planetary nebulae (PNe) are natural targets for FUSE due to their UV brightness. The FUSE spectra of many PNe show absorption features due to circumstellar mat…
An Infrared Survey of Neutron-Capture Elements in Planetary Nebulae
N. C. Sterling, H. L. Dinerstein
We present results from an ongoing survey of infrared emission lines from the neutron-capture elements Se and Kr in Galactic planetary nebulae (PNe). Se and Kr may be produced in t…
FUSE Observations of O VI Overlying the Scutum Supershell
N. C. Sterling, B. D. Savage, P. Richter +2
We present Far Ultraviolet Spectroscopic Explorer observations of the B0 III star HD 177989 ( = 4.9 kpc). This line of sight passes through t…