Abstract
ISO has enabled far-infrared spectroscopy of a variety of galaxies. Using the [CII] (158 μm) and [OI](63 μm) lines, we can characterize the physical conditions in the star-forming ISM. These observations also form the basis of our expectations for what the Herschel Space Observatory will observe for high redshift galaxies. While [CII] is suppressed in ULIRGs and normal galaxies with high dust temperatures, it is stronger than expected in metal poor galaxies by factors of a few. Young galaxies at high redshifts might be expected to be both metal poor and actively star-forming, leading to contrary expectations for the [CII] line strength. The best prediction for [CII] detection is derived by using the observed proportionality between [CII] and mid-IR emission from PAHs. Using the observed [CII]/7 μm ratio and number counts from ISO deep surveys we predict that HSO will be able to detect 100 sources/square-degree in the [CII] line.
| Original language | English (US) |
|---|---|
| Title of host publication | European Space Agency, (Special Publication) ESA SP |
| Pages | 155-158 |
| Number of pages | 4 |
| Edition | 460 |
| State | Published - 2001 |
| Externally published | Yes |
| Event | The Promise of the Herschel Space Observatory - Toledo, Spain Duration: Dec 12 2000 → Dec 15 2000 |
Other
| Other | The Promise of the Herschel Space Observatory |
|---|---|
| Country/Territory | Spain |
| City | Toledo |
| Period | 12/12/00 → 12/15/00 |
Keywords
- Galaxies: formation
- Missions: FIRST
- Stars: formation
ASJC Scopus subject areas
- Aerospace Engineering