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Spatial Correlations of Selected DIBs to the CH and CH+ Molecules

Published online by Cambridge University Press:  21 February 2014

T. Weselak  and
J. Krełowski
T. Weselak
Affiliation:
Institute of Physics, Casimir the Great University, Weyssenhoffa 11, 85-072 Bydgoszcz, Poland; email: towes@gazeta.pl
J. Krełowski
Affiliation:
Center for Astronomy, Nicolaus Copernicus University, Gagarina 11, Pl-87-100 Toruń, Poland; email: jacek@astri.uni.torun.pl
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Abstract

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The analysis of radial velocities in the spectra of HD 151932 and HD 152233, performed for the optical lines of interstellar CH and CH+ molecules on one hand, and for the diffuse bands 4964 and 6196 Å on the other hand, suggests that the carrier of the former DIB is spatially related to CH, while the carrier of the latter - to CH+. A further analysis, based on the sample of 106 reddened OB stars, partly confirms this suggestion, showing that the CH column density correlates indeed much better with the equivalent width of the 4964 DIB than with that of the 6196 DIB.

Keywords

Diffuse Interstellar BandsMolecules
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S297: The Diffuse Interstellar Bands , May 2013 , pp. 128 - 131
Copyright
Copyright © International Astronomical Union 2014 

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