Would Jupiter steal matter from our Sun when it reach red giant phase?

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Discussion Overview

The discussion centers on whether Jupiter could absorb matter from the Sun during its red giant phase, exploring the implications of solar expansion and gravitational interactions. Participants consider the effects of solar wind and the potential for atmospheric erosion on Jupiter.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • Some participants propose that while the Sun will expand, it will not reach Jupiter, but the mass loss from the Sun could still be significant.
  • Others argue that the Sun's mass is gravitationally bound and that its expansion will not allow Jupiter to capture significant amounts of mass due to the Sun's much greater mass.
  • There is uncertainty about whether Jupiter could absorb expelled matter or if the solar wind would erode its atmosphere.
  • One participant suggests that while Jupiter might capture some material, its gravitational influence is limited to a small region around it, making significant capture unlikely.
  • Another point raised is the potential heating of Jupiter due to increased insolation as the Sun approaches maximum luminosity, with questions about the effects on its atmosphere.

Areas of Agreement / Disagreement

Participants express differing views on the extent to which Jupiter could interact with the Sun's expelled mass, with no consensus reached on the matter. Some agree on the limitations of Jupiter's gravitational influence, while others speculate about the effects of solar wind and atmospheric changes.

Contextual Notes

Participants note the need for modeling to provide definitive answers regarding the interactions between Jupiter and the Sun during the red giant phase, highlighting the complexity of the scenario.

Czcibor
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It is closer to Sun than the distance between Sirius A and B.

Yes I know that the Sun wound't expand so much to touch Jupiter, however it would be anyway blowing its mass away. Would Jupiter have strong enough gravitation to absorb significant amount of mass?
 
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I don't think so. The Sun's mass is still gravitationally bound to the Sun, and the Sun will only expand out to a little bit less than the Earth's orbit. So I think the Sun will still keep its mass from the hands of Jupiter. After all, the Sun is over 1000 times more massive.
 
Hmm. I'm not sure if Jupiter would absorb some of the expelled matter, or if the matter would cause erosion of its atmosphere.
 
Drakkith said:
Hmm. I'm not sure if Jupiter would absorb some of the expelled matter, or if the matter would cause erosion of its atmosphere.

yeah that's what I was thinking, would the stronger solar wind deplete Jupiters atmosphere ??

Dave
 
The Red Giant phase solar wind will be dense, but slow. Jupiter will quite easily capture what it can, but it won't be very much - Jupiter's gravitational "catchment" is only a few Jupiter radii wider than Jupiter, which is a tiny fraction of the Sun-Jupiter distance.

A tougher question is how much Jupiter will puff up as the Sun really heats up towards the Red Giant Tip - maximum luminosity and radius. The drama is packed into a million years, with Jupiter being hit by about ~2-3 times the insolation Mercury receives. How much will Jupiter heat up? I don't think the erosion will be significant as all the mass-losing Hot-Jupiters never had a chance to cool down like Jupiter has. But a definite answer will need modelling.
 

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