How close to a supernova can a planet retain an atmosphere?

I already read Can a planet survive a supernova? but that just addresses some kind of planet-remnant remaining in orbit.

Parameters:

• Binary system. One component is a Sun-like G-type star with several rocky planets, one in the habitable zone. The other is a neutron star, the remnant of a (type II) supernova from a large (maybe 12 solar masses) B-type star.

• Early in the system's history, the high-mass star went supernova and enriched the G-type and its planets/asteroids/etc with heavy elements.

• I need the habitable-zone planet to retain a roughly Earthlike atmospheric pressure. It's OK if the planet starts out with a Venus-like (or more) atmospheric pressure and gets knocked down to 1 atm or so by the supernova.

Questions:

So, how much does the separation of the Sunlike star from the supernova-ing star need to be for the atmosphere to survive?

At that distance, would the habitable-zone planet be meaningfully enriched in heavy metals by matter ejected from the supernova?

posted over 7 years ago

cometaryorbit‭

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