H2 Velocity Structure in HH 211
We describe the velocity structure of the molecular outflow HH211 in the 2.12Um line of H2. Observations were obtained using an IR Fabry-Pérot interferometerwith a spectral resolution of 24 km s_1. It is observed that the eastern lobe of theoutflow is blue-shifted while the western side is red-shift...
| Autores: | , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2003 |
| País: | México |
| Recursos: | Universidad Nacional Autónoma de México |
| Repositório: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:57139107 |
| Acesso em linha: | https://www.redalyc.org/articulo.oa?id=57139107 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Física, Astronomía y Matemáticas ISM: MOLECULES STARS: FORMATION ISM: JETS AND OUTFLOWS ISM: INDIVIDUAL (HH 211) ISM: KINEMATICS AND DYNAMICS |
| Resumo: | We describe the velocity structure of the molecular outflow HH211 in the 2.12Um line of H2. Observations were obtained using an IR Fabry-Pérot interferometerwith a spectral resolution of 24 km s_1. It is observed that the eastern lobe of theoutflow is blue-shifted while the western side is red-shifted. Most of the emissionoriginates at low velocities, in agreement with the ux-velocity relation of Salas& Cruz-González (2002), but these velocities are in general higher than the lowvelocities observed in CO. There is also evidence of the high velocities that tracethe molecular jet, in both CO and SiO, and these high velocities in H2 occur closerto the central axis of the outflow. These arguments lead us to the conclusionthat H2 coexists with CO in the molecular outflow, as opposed to the view thatH2 emission arises in the shocked quiescent medium. The jet and X-wind drivenoutflow dynamical models are tested to fit the observed morphology and kinematicsof H2. |
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