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The new infrared diffuse interstellar bands in the Galactic center

Published online by Cambridge University Press:  22 May 2014

T. R. Geballe ,
F. Najarro ,
D. de la Fuente ,
D. F. Figer ,
A. J. Adamson  and
M. G. Rawlings
T. R. Geballe
Affiliation:
Gemini Observatory, 670 N. A'ohoku Pl., Hilo, HI 96720USA email: [email protected]
F. Najarro
Affiliation:
Center for Astrobiology, Torrejón de Ardoz, Spain
D. de la Fuente
Affiliation:
Center for Astrobiology, Torrejón de Ardoz, Spain
D. F. Figer
Affiliation:
Rochester Institute of Technology, Rochester, NY 14623, USA
A. J. Adamson
Affiliation:
Rochester Institute of Technology, Rochester, NY 14623, USA
M. G. Rawlings
Affiliation:
ALMA-NRAO, Charlottesville, VA 22903USA
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The diffuse interstellar bands (DIBs) are a set of absorption features, some of which are broad (“diffuse”), that are formed in the diffuse ISM. Since their discovery nearly a century ago their numbers have increased to over 500. The strongest of these are known to be ubiquitous in the universe. There is general consensus that they are produced by large carbon-bearing molecules; however, no specific identification of any single DIB has survived scrutiny. The overwhelming majority of DIBs are at optical and very near infrared wavelengths. In 1990 two DIBs were identified in J-band spectra, at 1.18 μm and 1.31 μm by Joblin et al. (1990); until recently these were the longest wavelength examples known.

Keywords

astrochemistryISM: abundances - lines and bands - moleculesGalaxy: center
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S303: The Galactic Center: Feeding and Feedback in a Normal Galactic Nucleus , October 2013 , pp. 75 - 77
Copyright
Copyright © International Astronomical Union 2014 

References

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