Profiles of Very Weak Diffuse Interstellar Bands around 6440 Å

Details Profiles of Very Weak Diffuse Interstellar Bands around 6440 Å Profiles of Very Weak Diffuse Interstellar Bands around 6440 Å

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...629..299g&link_type=abstract

The Astrophysical Journal, Volume 629, Issue 1, pp. 299-304.

Astronomy and Astrophysics

Astronomy

7

Ism: Lines And Bands, Ism: Molecules

Scientific paper

Profiles of very weak diffuse interstellar bands (DIBs) between 6400 and 6470 Å observed with high resolution and very high S/N are demonstrated. We show that with the increasing quality of reddened stellar spectra, the whole spectral range is covered with weak or very weak DIBs-at least one every 2-3 Å. We also present the details of the profiles of a few stronger features; the presence of substructures resembles the profiles of strong DIBs observed in high resolution during the last decade and supports the hypothesis of a molecular origin of at least a majority of DIBs.

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