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Discovery of Lyα‐pumped Molecular Hydrogen Emission in the Planetary Nebulae NGC 6853 and NGC 3132

  • Authors: R. E. Lupu, K. France, and S. R. McCandliss

Lupu, France, & McCandliss 2006 The Astrophysical Journal 644 981.

  • Provider: AAS Journals

Caption: Fig. 4.

Exciting Lyα profile absorbed by a H I column density of ﹩1\times 10^{14}﹩ cm−2 used for the NGC 6853 model. Velocity offsets with respect to the molecular hydrogen reference system are 25 km s−1 for both emission and H I absorption. The H2 absorbing transitions are indicated by dashed lines. The dotted line corresponds to an H2 absorption profile for a column density of ﹩6\times 10^{18}﹩ cm−2.

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