Astronomy C Question Marathon
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syo_astro
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Re: Astronomy C Question Marathon
Alright, hope this question is clear enough. What type of recurrent nova is T Pyxidis?
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foreverphysics
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Re: Astronomy C Question Marathon
It is a fairly massive white dwarf in a binary star system. The other star is a mid-size star about the size of our sun.
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syo_astro
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Re: Astronomy C Question Marathon
Ah, I'm not asking to explain the components of the system. A hint is that there's more than one type of recurrent nova.foreverphysics wrote:It is a fairly massive white dwarf in a binary star system. The other star is a mid-size star about the size of our sun.
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foreverphysics
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Re: Astronomy C Question Marathon
Perhaps you mean dwarf nova then?
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syo_astro
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Re: Astronomy C Question Marathon
Yeah, bbgun had what I was looking for, sorry forever. I actually wasn't looking for accretion-powered since it actually is powered by thermonuclear runaway (unless you better defined what you said than from my perspective), which makes it closer to classical novae than dwarf novae (at least I think from what I read?), but at least bbgun got the NRA part.
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AlphaTauri
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Re: Astronomy C Question Marathon
The star went through its RG phase and ejected its outer layers to form a planetary nebula, but then fusion reignited and the star went through another round of being a red giant and ejecting its outer layers, creating a second PNe inside the first
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alpacas
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Re: Astronomy C Question Marathon
the progenitor star of Abell 30 originally went through thermonuclear explansion 12,500 years ago and shed its outer layers, then 850 years ago the progenitor star was essentially reborn and re-shed He and C layers after nuclear reactions and such brought enough nebulous material back to the WD to eventually give it two planetary nebulas like it was reborn
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