EDP Sciences
Free access
Issue A&A
Volume 396, Number 3, December IV 2002
Page(s) 987 - 991
Section Diffuse matter in space
DOI http://dx.doi.org/10.1051/0004-6361:20021299

A&A 396, 987-991 (2002)
DOI: 10.1051/0004-6361:20021299

Fine structure of profiles of weak diffuse interstellar bands

G. Galazutdinov1, 2, 3, W. Stachowska1, F. Musaev1, 2, 3, C. Moutou4, G. Lo Curto5 and J. Krelowski1

1  Center for Astronomy, Nicholas Copernicus University, Gagarina 11, 87-100 Torun, Poland
    e-mail: jacek@astri.uni.torun.pl; wiolka@astri.uni.torun.pl
2  Special Astrophysical Observatory, Nizhnij Arkhyz 369167, Russia
    e-mail: gala@sao.ru; faig@sao.ru
3  Isaac Newton Institute of Chile, SAO Branch
4  Laboratorie d'Astrophysique de Marseille, Traverse du Siphon, Les trois Lucs, BP 8, 13376 Marseille Cedex 12, France
    e-mail: Claire.Moutou@oamp.fr
5  European Southern Observatory, Alonso De Cordova 3107, Vitacura, Santiago, Chile
    e-mail: glocurto@eso.org

(Received 17 July 2002 / Accepted 2 September 2002)

We present a very high resolution ( $R=120\,000$-220 000) analysis of profiles of selected diffuse interstellar bands (DIBs): 4964, 4980, 4985, 5850 Å. The 4980 Å feature is a very weak one, yet some substructures are proved to be present, as well as within the profiles of another stronger ones where this phenomenon was found several years ago. The presence of substructures inside DIB profiles supports their molecular origin.

Key words: ISM: clouds, molecules

Offprint request: J. Krelowski, jacek@astri.uni.torun.pl

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Editor-in-Chief: T. Forveille
Letters Editor-in-Chief: J. Alves
Managing Editor: C. Bertout

ISSN: 0004-6361 ; e-ISSN: 1432-0746
Frequency: 12 volumes per year
Published by: EDP Sciences

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