Doppler splitting in diffuse interstellar bands

T. Weselak

doi:10.1111/j.1365-2966.2009.15729.x

2010-01-11

DOI：10.1111/j.1365-2966.2009.15729.x

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摘要

En 中文

We demonstrate evident Doppler splitting in the profiles of many narrow diffuse interstellar bands (DIBs). Their components are compared with those of atomic and molecular lines of interstellar origin. It is shown that it is likely that the species that shares both wavelength shifts and strength ratios of the Doppler components seen in the DIB profiles is the CH radical. Because of this profile resemblance, it is recommended that CH lines can be used to shift spectra to the rest velocity frame for interstellar features, especially to determine the DIB rest wavelengths on the basis of the CH line at 4300.3132 A in the spectrum of HD 147889. Our results strongly support a molecular origin of diffuse bands.

Keyword:

ISM: molecules

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期刊

Monthly Notices of the Royal Astronomical Society

IF:

4.8

论文数:

7.0W

被引数:

25.0W

机构

korea astronomy & space science institute (kasi)

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1.8K

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被引数: 3

Nicolaus Copernicus University

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6.8K

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seoul national university (snu)

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7.2W

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kazimierz wielki university

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758

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