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Molecules in an infrared cirrus cloud
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Meyerdierks, Horst Brouillet, Nathalie |
| Copyright Year | 1989 |
| Description | One of the clouds that form the Polar Loop was observed in the 1(sub 10)-1(sub 11) 4.8 GHz transition of formaldehyde and in J equal to 1-0 transitions of CO-12 and CO-13 at 115 and 110 GHz resp. The cloud consists of several filaments. From the correlation of IRAS 60 and 100 microns intensities a color temperature of the dust of 21 K and a maximum optical depth of 3 x 10(exp -4) were derived. At one local maximum of the 100 micron intensity, the hyperfine structure of formaldehyde could be resolved. Since the infrared optical depth is small, the 100 micron intensity can be used as a measure of dust column density. |
| File Size | 113210 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910005664 |
| Archival Resource Key | ark:/13960/t1gj4d36n |
| Language | English |
| Publisher Date | 1989-12-01 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Protons Interstellar Radiation H I Regions Cirrus Clouds Molecular Clouds Infrared Astronomy Satellite Formaldehyde Hyperfine Structure Cosmic Dust Infrared Radiation Radiation Measurement Optical Thickness Carbon Monoxide Interstellar Gas Carbon 13 Carbon 12 Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
