A search for the 13175 A infrared diffuse band in dense environments

Details A search for the 13175 A infrared diffuse band in dense environments A search for the 13175 A infrared diffuse band in dense environments

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994dib..nasa...17a&link_type=abstract

In NASA. Ames Research Center, The Diffuse Interstellar Bands: Contributed Papers p 17 (SEE N95-15827 03-89)

Astronomy and Astrophysics

Astronomy

Carbon Isotopes, Infrared Astronomy, Infrared Radiation, Infrared Spectra, Line Of Sight, Molecular Clouds, Interstellar Matter, Stellar Models, Taurus Constellation

Scientific paper

Models of ionized interstellar C60 predict a strong transition in the 1.2 micrometer region, and two candidate bands have recently been detected in reddened stars. We have searched for the stronger of these bands (at 13175 A) in the Taurus dark cloud complex, to determine its response to the dark-cloud environment. None of the three lines of sight studied (two near the cloud surface, one reaching AV greater than 20m) give rise to a detectable band; in one case the equivalent width is a factor of order three below that predicted. Since such behaviour is also shown by the optical Diffuse Interstellar Bands, we suggest that the 13175 A band is a genuine DIB, but we caution against an automatic interpretation in terms of an ionic carrier.

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