A laboratory analog for the carrier of the 3 micron emission of the protoplanetary nebula IRAS 05341+0852 |
| |
Authors: | Beegle L W Wdowiak T J Arnoult K M |
| |
Institution: | Department of Physics, University of Alabama at Birmingham 35294-1170, USA. |
| |
Abstract: | A mixture of the polycyclic aromatic hydrocarbons (PAHs), acenaphthylene and acenaphthene, when subjected to the energetic environment of a hydrogen plasma, is transformed into a material that exhibits an infrared absorption profile in the 3 micron region that is an excellent match of the protoplanetary nebula IRAS 05341+0852 emission profile in the same wavelength region. Acenaphthylene and acenaphthene were chosen as precursors in the experiment because these molecules have a structure that can be described as a keystone in a process in which carbon atoms in a stellar wind condense into PAH species. The spectral match between experiment and observations appears to validate that scenario. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|