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Small scale structure in diffuse molecular gas from repeated FUSE and visible spectra of HD 34078

Patrick Boisse·Emmanuel Rollinde·Franck Le Petit·Guillaume Pineau des Forets·Evelyne Roueff·Cecile Gry·B-G Andersson·Vincent Le Brun
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Abstract

We present preliminary results from an ongoing program devoted to a study of small scale structure in the spatial distribution of molecular gas. Our work is based on multi-epoch FUSE and visible observations of HD34078. A detailed comparison of H2, CH and CH+ absorption lines is performed. No short term variations are seen (except for highly excited H2) but long-term changes in N(CH) are clearly detected when comparing our data to spectra taken about 10 years ago.

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Patrick Boisse, Emmanuel Rollinde, Franck Le Petit, Guillaume Pineau des Forets, Evelyne Roueff, Cecile Gry, B-G Andersson, Vincent Le Brun. 2001-10-04. Small scale structure in diffuse molecular gas from repeated FUSE and visible spectra of HD 34078. https://arxiv.org/abs/astro-ph/0110113

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