Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...218..124s&link_type=abstract
Astrophysical Journal, Part 1, vol. 218, Nov. 15, 1977, p. 124-132.
Astronomy and Astrophysics
Astrophysics
79
Diffuse Radiation, Interstellar Matter, Molecular Spectra, Spectral Bands, Abundance, Clouds, Grains, Polarization Characteristics, Spectral Line Width, Stellar Envelopes, Ultraviolet Spectra
Scientific paper
Most work in recent years on the unidentified diffuse interstellar bands has been concentrated on the hypothesis that they are produced by some process in solid grains. We review that hypothesis and the arguments which support it, and find that diffuse band formation by certain classes of molecules should not yet be ruled out. Since several relevant observations have been made in the last four years, the observational data on the bands are reviewed. It would appear that these data are as consistent with molecular origins for the bands as with grain origins. Types of molecular transitions which give rise to 'diffuse' bands are described. These transitions can occur in relatively simple molecules composed of cosmically abundant elements and can produce broad, unresolvable profiles without destroying the molecule. New observations are suggested which could produce decisive evidence with which to determine whether the diffuse bands originate in grains, molecules, or both.
Smith William Hayden
Snow P. Jr. Th.
York Don G.
No associations
LandOfFree
Comments on the origins of the diffuse interstellar bands does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Comments on the origins of the diffuse interstellar bands, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comments on the origins of the diffuse interstellar bands will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1130891