The structure of the narrow emission bands near 10 m

Publisher Website
Google Scholar
Abstract
High quality spectra at 8–13 μm of five compact objects that display narrow infrared emission bands are presented. All of the objects display the well-known 11.25- and 8.56-μm features together with the long wavelength wing of the 7.7-μm band. In addition, weaker bands near 11.05 and 11.5 μm and/or ‘plateau’ emission between the 11.25- and 12.7-μm features are evident in some of the objects. There is considerable dispersion as to the equivalent width of the features from object to object. The pre-main sequence star TY CrA has a remarkable spectrum, displaying an especially pronounced feature at 11.05 μm with an intensity 25 per cent that of the 11.25-μm feature, and a very prominent 8.6-μm band. Overall, the structure apparent in the 11-13 μm region is reflected in the prominence of the 8.6-μm feature and the complexity in the emission features near 3 μm. The observations are discussed in terms of emission from polycyclic aromatic hydrocarbons.

This publication has 0 references indexed in Scilit: