2003/03/18 by R. Papoular, Renaud papoular
Physics and Astronomy · #Astro and Planetary Science #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #astro-ph
paper · pdf · doi:10.1051/0004-6361:20030370
published as Astron.Astrophys.402:L13-L16,2003 · 5 pages, 1 figure, accepted by A and A Letters
arxiv created 2003/03/18 · openalex publication_date 2003/04/14 · arxiv updated 2011/05/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The current assignments of the 11.3-μm feature are dicussed. An unbiased survey of correlation charts suggests that the olefinic group R2C = CH2 is a good alternative candidate. For the 12.7-μm feature, the best fits are provided by nitrites, R-O-N = O, and amines, R-N = H2. Sulfones, SO2, exhibit strong features near 7.7 and 8.6 μm, which may contribute to the UIBs. These additional functional groups are likely to be attached to the main hydrocarbon dust skeleton previously hypothesized.