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The formation of planetary disks and winds: an ultraviolet view

Gómez de Castro, Ana Inés (2009) The formation of planetary disks and winds: an ultraviolet view. Astrophysics and space science, 320 . pp. 97-106. ISSN 0004-640X

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Abstract

Planetary systems are angular momentum reservoirs generated during star formation. This accretion process produces very powerful engines able to drive the optical jets and the molecular outflows. A fraction of the engine energy is released into heating thus the temperature of the engine ranges from the 3000 K of the inner disk material to the 10 MK in the areas where magnetic reconnection occurs. There are important unsolved problems concerning the nature of the engine, its evolution and the impact of the engine in the chemical evolution of the inner disk. Of special relevance is the understanding of the shear layer between the stellar photosphere and the disk; this layer controls a significant fraction of the magnetic field building up and the subsequent dissipative processes ougth to be studied in the UV. This contribution focus on describing the connections between 1 Myr old suns and the Sun and the requirements for new UV instrumentation to address their evolution during this period. Two types of observations are shown to be needed: monitoring programmes and high resolution imaging down to, at least, milliarsecond scales.

Item Type:Article
Additional Information:Conference on Network for Ultra Violet Astronomy, JUN 2007, Madrid (Spain)
Uncontrolled Keywords:T-tauri stars; magnetospheric accretion; stellar magnetosphere; dense outflows; h-2 emission; young stars; lines; continuum; models; dynamo; UV astronomy; Pre-main sequence stars; Jets; Winds; Accretion disks
Subjects:Sciences > Mathematics > Astronomy
ID Code:15983
Deposited On:17 Jul 2012 11:20
Last Modified:06 Feb 2014 10:35

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