The $\lambda$6614 diffuse interstellar absorption band: evidence for internal excitation of the carrier

Charlotte C. M. Marshall; Jacek Krełowski; Peter J. Sarre

doi:10.1093/mnras/stv1838

The $\lambda$6614 diffuse interstellar absorption band: evidence for internal excitation of the carrier

Astrophysics of Galaxies 2015-09-29 v1

Authors: Charlotte C. M. Marshall , Jacek Krełowski , Peter J. Sarre

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Abstract

An analysis of absorption profiles of the $\lambda$ 6614 diffuse interstellar band recorded along the lines-of-sight towards HD 179406 (20 Aql) and HD 147889 is described. The difference in band shape is attributed to the degree of internal excitation of the carrier, which is principally due to vibrational hot bands although an electronic component may also be present. The results are discussed with respect to other models of diffuse band spectral line shape.

Keywords

diffuse interstellar band absorption profile internal excitation carrier vibrational hot bands spectral line shape line-of-sight observation

Cite

@article{arxiv.1508.03308,
  title  = {The $\lambda$6614 diffuse interstellar absorption band: evidence for internal excitation of the carrier},
  author = {Charlotte C. M. Marshall and Jacek Krełowski and Peter J. Sarre},
  journal= {arXiv preprint arXiv:1508.03308},
  year   = {2015}
}

Comments

Accepted for publication at MNRAS

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