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Interstellar medium in the M 43 nebula
- Publication Year :
- 2009
- Publisher :
- arXiv, 2009.
-
Abstract
- We present a list of interstellar absorption lines in the direction of HD 37061 in the M 43 nebula. Some of the absorption lines arise from atomic excited levels that are uncommon in interstellar clouds. The excited levels of Fe II are populated by fluorescence. We found a large number of H2 molecular absorption lines arising from vibrationally excited levels. The ortho/para H2 ratio is equal to 2.7. The H2 rotational temperature of vibrational levels 1 - 5 exceeds 2000 K.
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....80b8256b739d6fa24bfb017ae7bbfd8b
- Full Text :
- https://doi.org/10.48550/arxiv.0901.0092