Detection of diffuse interstellar bands in the infrared

Details Detection of diffuse interstellar bands in the infrared Detection of diffuse interstellar bands in the infrared

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.346..729j&link_type=abstract

Nature (ISSN 0028-0836), vol. 346, Aug. 23, 1990, p. 729-731.

Physics

35

Diffuse Radiation, Infrared Spectra, Interstellar Matter, Spectral Bands, Absorption Spectra, Interstellar Extinction, Spectral Line Width, Stellar Spectra

Scientific paper

Two new diffuse interstellar bands (DIBS) have been found in the near-infrared, near 11,800 A and 13,200 A, in the spectra of reddened O, B, and A stars. Their FWHMs are 2.7 + or - 0.3 A and 4.0 + or - 0.5 A respectively, and their equivalent widths are 60 and 135 mA per magnitude of extinction. The wavelength of the second DIB is a factor of 1.5 longer than that of the longest wavelength band previously identified, which may be an important constraint on the nature of the carriers of these two bands.

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