File:Symbiotic Star R Aquarii (1990-15-17).tif

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Captions

Captions

This illustration depicts one possible explanation for R Aquarii's semi-periodic outbursts.

Summary[edit]

Description
English: This illustration depicts one possible explanation for R Aquarii's semi-periodic outbursts. The peculiar behavior of R Aquarii suggests that the red giant star in the R Aquarii system may spill some of its mass onto the companion – a common mechanism proposed for most nova-like outbursts. The mass transfer process may form an accretion disk: a swirling, flattened vortex of hot gasses that spiral down onto the hot companion. The disk may periodically erupt when the companion becomes overloaded with in-falling material. These explosions may happen only periodically when the white dwarf orbits close enough to pull in material from the star's outer layer.
Date 4 October 1990 (upload date)
Source Symbiotic Star R Aquarii
Author Credit: NASA, ESA, and D. Berry (STScI)
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Licensing[edit]

Public domain This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.

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