Resolving the Multiple Outflows in the Egg Nebula with Keck II Laser Guide Star Adaptive Optics

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dc.creatorMignant, D. Le
dc.creatorSahai, R.
dc.creatorBouchez, A.
dc.creatorCampbell, R.
dc.creatorvan Dam, M.
dc.creatorChin, J.
dc.creatorJohansson, E.
dc.creatorHartman, S.
dc.creatorLafon, R.
dc.creatorLyke, J.
dc.creatorStomski, P.
dc.creatorSummers, D.
dc.creatorWizinowich, P.
dc.date2007-09-04
dc.date.accessioned2026-07-07T08:27:32Z
dc.date.available2026-07-07T08:27:32Z
dc.descriptionThe Egg Nebula has been regarded as the archetype of bipolar proto-planetary nebulae, yet we lack a coherent model that can explain the morphology and kinematics of the nebular and dusty components observed at high-spatial and spectral resolution. Here, we report on two sets of observations obtained with the Keck Adaptive Optics Laser Guide Star: H to M-band NIRC2 imaging, and narrow bandpath K-band OSIRIS 3-D imaging-spectroscopy (through the H2 2.121micron emission line). While the central star or engine remains un-detected at all bands, we clearly resolve the dusty components in the central region and confirm that peak A is not a companion star. The spatially-resolved spectral analysis provide kinematic information of the H_2 emission regions in the eastern and central parts of the nebula and show projected velocities for the H_2 emission higher than 100 km/s. We discuss these observations against a possible formation scenario for the nebular components.
dc.description5 pages, 2 figures, to appear in the proceedings of the conference "Asymetrical Planetary Nebula IV", edited by Romano L.M. Corradi, Arturo Manchado and Noam Soker
dc.identifierhttps://arxiv.org/abs/0709.0473
dc.identifierhttp://arxiv.org/abs/0709.0473
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/137304
dc.subjectAstrophysics
dc.titleResolving the Multiple Outflows in the Egg Nebula with Keck II Laser Guide Star Adaptive Optics
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