Loading...
Please wait, while we are loading the content...
Similar Documents
Identification of the emission features near 3.5 microns in the pre main sequence star hd 97048
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lacy, J. H. Baas, F. Persson, S. E. Geballe, T. R. Allamandola, L. J. |
| Copyright Year | 1982 |
| Description | The spectrum of HD97048 was measured with a resolving power of 450 between 3.37 and 3.64 microns. The prominent feature near 3.5 microns is well resolved, with a peak at 3.53 microns and a wing extending to a shorter wavelength. The weaker feature near 3.4 microns is found to peak at 3.43 microns, in contrast to the 3.40 micron feature seen in other astronomical objects. The observed spectrum strongly resembles laboratory spectra of mixtures of monomeric and dimeric formaldehyde embedded in low temperature solids. Of various possible excitation mechanisms, ultraviolet pumped infrared fluorescence of formaldehyde in interstellar grains provides the best explanation for the observed spectrum of HD 97048. |
| File Size | 745161 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820026444 |
| Archival Resource Key | ark:/13960/t1fj7908v |
| Language | English |
| Publisher Date | 1982-01-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Stellar Spectra Stellar Envelopes Cosmic Dust Fluorescence Stellar Radiation Main Sequence Stars Infrared Radiation Astronomical Spectroscopy Optical Pumping Infrared Astronomy Molecular Excitation Formaldehyde Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
