A new sample of young Planetary Nebulae

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dc.creatorUmana, G.
dc.creatorCerrigone, L.
dc.creatorTrigilio, C.
dc.creatorZappala', R. A.
dc.date2003-10-07
dc.date.accessioned2026-07-07T02:10:12Z
dc.date.available2026-07-07T02:10:12Z
dc.descriptionDespite of numerous efforts, the stage from Asymptotic Giant Branch (AGB) to Planetary Nebulae (PN) is a poorly understood phase of stellar evolution. We have therefore carried out interferometric (VLA) observations of a sample of hot post-AGB stars, selected on the basis of their optical and infrared properties. Ten sources, out of the 16 been observed, were detected. This indicates that most of our targets are surrounded by a nebula where the ionization has already started. This definitively determines the evolutionary status of the selected sources and provides us with a unique sample of very young Planetary Nebulae (yPNs).
dc.description4 pages; to appear in ``Asymmetric Planetary Nebulae III'', ASP conf. series, in press (2003)
dc.identifierhttps://arxiv.org/abs/astro-ph/0310190
dc.identifierhttp://arxiv.org/abs/astro-ph/0310190
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/6664
dc.subjectAstrophysics
dc.titleA new sample of young Planetary Nebulae
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