Kinematic Structure of H2and [Feii] in the Bipolar Planetary Nebula M2-9
نویسندگان
چکیده
منابع مشابه
A disc inside the bipolar planetary nebula M2-9⋆
Aims. Bipolarity in proto-planetary and planetary nebulae is associated with events occurring in or around their cores. Past infrared observations have revealed the presence of dusty structures around the cores, many in the form of discs. Characterising those dusty discs provides invaluable constraints on the physical processes that govern the final mass expulsion of intermediate mass stars. We...
متن کاملKinematic Structure of H 2 and [fe Ii] in the Bipolar Planetary Nebula M 2-9
We present new high-dispersion long-slit infrared (IR) spectra of the double-shell bipolar planetary nebula M 2-9 in the emission lines [Fe ii] λ16435 and H2 v=1–0 S(1) λ21218. H2 spectra reveal for the first time the kinematic structure of the outer shell in M 2-9. Kinematics of the inner shell, traced by [Fe ii], resemble those of optical forbidden-lines like [N ii] λ6583, although we note su...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2005
ISSN: 0004-6256,1538-3881
DOI: 10.1086/431253