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The X-ray Evolution of the Symbiotic Star V407 Cygni during its 2010 Outburst
- Source :
- Open Astronomy, Vol 21, Iss 1-2, Pp 54-61 (2012)
- Publication Year :
- 2012
- Publisher :
- arXiv, 2012.
-
Abstract
- We present a summary of Swift and Suzaku X-ray observations of the 2010 nova outburst of the symbiotic star, V407 Cyg. The Suzaku spectrum obtained on day 30 indicates the presence of the supersoft component from the white dwarf surface, as well as optically thin component from the shock between the nova ejecta and the Mira wind. The Swift observations then allow us to track the evolution of both components from day 4 to day 150. Most notable is the sudden brightening of the optically thin component around day 20. We identify this as the time when the blast wave reached the immediate vicinity of the photosphere of the Mira. We have developed a simple model of the blast wave-wind interaction that can reproduce the gross features of the X-ray evolution of V407 Cyg, and explore a parameter space of ejected mass, binary separation and Mira mass loss rate. If the model is correct, the binary separation is likely to be larger then previously suggested and the mass loss rate of the Mira is likely to be relatively low.<br />Comment: Submitted to the proceedings of the First Asiago Meeting on Symbiotic Stars, July 10-11 2011, Asiago, Italy. 8 pages, 5 figures
- Subjects :
- Shock wave
Physics
stars
High Energy Astrophysical Phenomena (astro-ph.HE)
Photosphere
Astronomy
White dwarf
FOS: Physical sciences
Astronomy and Astrophysics
QB1-991
Astrophysics
x-rays
Spectral line
Stars
Astrophysics - Solar and Stellar Astrophysics
Space and Planetary Science
Symbiotic star
symbiotic
Astrophysics - High Energy Astrophysical Phenomena
Ejecta
Blast wave
Solar and Stellar Astrophysics (astro-ph.SR)
white dwarfs
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Open Astronomy, Vol 21, Iss 1-2, Pp 54-61 (2012)
- Accession number :
- edsair.doi.dedup.....ae74c30a1c35918cc49fc4e147b52ca2
- Full Text :
- https://doi.org/10.48550/arxiv.1201.5645