High-Resolution Spectroscopy of H2 in Proto-Planetary Nebulae

Details High-Resolution Spectroscopy of H2 in Proto-Planetary Nebulae High-Resolution Spectroscopy of H2 in Proto-Planetary Nebulae

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..313..343k&link_type=abstract

Asymmetrical Planetary Nebulae III: Winds, Structure and the Thunderbird, Proceedings of the conference held 28 July - 1 August

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We measured position-velocity spectra of the H2 1-0 S(1) line for eight proto-planetary nebulae (PPNs). The R=50000 H2 spectra provide strong insights into the excitation and evolution of PPNs. They reveal the inertial confinement mechanism that can lead to the production of jets and clumps in F and G spectral type bipolar PN. They also make clear the role that radiative excitation plays in the H2 emission of early-B spectral type PPNs and allow easy recognition of the relative contributions of radiative and thermal excitation.

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