Abstract
Using a newly developed Spatial Heterodyne Spectrometer (SHS), we have obtained the first radial velocity resolved emission-line profiles of diffuse [OII] λ3726 and λ3729 doublet emission from the warm (104 K) ionized component of our Galaxy's interstellar medium (WIM). These [OII] lines are a principal coolant for this widespread, photoionized gas and are a tracer of variations in the gas temperature resulting from unidentified heating processes that appear to be acting within the Galaxy's disk and halo.
Original language | American English |
---|---|
State | Published - Jun 1 2007 |
Externally published | Yes |
Keywords
- interstellar emission
- Spatial Heterodyne Spectrometer
- Milky Way
Disciplines
- Astrophysics and Astronomy