Origin of diffuse interstellar bands: spectroscopic studies of their possible carriers

Details Origin of diffuse interstellar bands: spectroscopic studies of their possible carriers Origin of diffuse interstellar bands: spectroscopic studies of their possible carriers

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000newar..44..581f&link_type=abstract

New Astronomy Reviews, Volume 44, Issue 10, p. 581-597.

Astronomy and Astrophysics

Astronomy

33

Scientific paper

The results of astrophysical observations that provide evidence for the molecular origin of the diffuse interstellar bands (DIBs) are reviewed. It is established that molecular systems with a linear, planar or spherical carbon skeleton are good candidates as DIB carriers, and laboratory spectroscopic data concerning such systems are discussed. The characteristic features of the electronic spectra of fullerenes, polycyclic aromatic hydrocarbons, and of linear carbon chains and their ions are found to be consistent with the principal spectroscopic features of DIBs. Analysis of the astrophysical electronic spectra of several simple molecules that have so far been assigned indicates that polar molecules should be easier to detect in this way than those without a permanent electric dipole moment.

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