Understanding Mass-Loss and the late Evolution of Intermediate Mass Stars: Jets, Disks, Binarity, Dust and Magnetic Fields

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dc.creatorSahai, Raghvendra
dc.creatorBalick, Bruce
dc.creatorBlackman, Eric
dc.creatorKastner, Joel
dc.creatorClaussen, Mark
dc.creatorMorris, Mark
dc.creatorDe Marco, Orsola
dc.creatorSpeck, Angela
dc.creatorFrank, Adam
dc.creatorTurner, Neal
dc.date2009-03-13
dc.date.accessioned2026-07-07T12:52:53Z
dc.date.available2026-07-07T12:52:53Z
dc.descriptionAlmost all stars in the 1-8 Msun range evolve through the Asymptotic Giant Branch (AGB), preplanetary nebula (PPN) and planetary nebula (PN) evolutionary phases. Most stars that leave the main sequence in a Hubble time will end their lives in this way. The heavy mass loss which occurs during the AGB phase is important across astrophysics, and the particulate matter crucial for the birth of new solar systems is made and ejected by AGB stars. Yet stellar evolution from the beginning of the AGB phase to the PN phase remains poorly understood. We do not understand how the mass-loss (rate, geometry, temporal history) depends on fundamental stellar parameters or the presence of a binary companion. While the study of evolved non-massive stars has maintained a relatively modest profile in recent decades, we are nonetheless in the midst of a quiet but exciting revolution in this area, driven by new observational results, such as the discovery of jets and disks in stellar environments where these were never expected, and by the recognition of new symmetries such as multipolarity and point-symmetry occuring frequently in the nebulae resulting from the outflows. In this paper we summarise the major unsolved problems in this field, and specify the areas where allocation of effort and resources is most likely to help make significant progress.
dc.descriptionWhite Paper submitted to the National Academy of Sciences Astro2010 Decadal Survey Committee (8 pages, 1 color figure)
dc.identifierhttps://arxiv.org/abs/0903.2750
dc.identifierhttp://arxiv.org/abs/0903.2750
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223440
dc.subjectAstrophysics of Galaxies
dc.titleUnderstanding Mass-Loss and the late Evolution of Intermediate Mass Stars: Jets, Disks, Binarity, Dust and Magnetic Fields
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