<p>I need to seek stars in our galaxy about to undergo a SN from catalogues. I can find stars in our galaxy by setting parallax to a certain value. However, I don't know how to find a parameter which tells me stars are about to undergo SN explosion. What can it be?</p>

CC BY-SA 4.0
2022-06-23T11:39:16.977Z
Most of the red giants don't undergo supernova. Mostly hypergiants, supergiants and WN stars undergo supernova.
Aegean
CC BY-SA 4.0
2022-06-23T11:43:18.137Z
You're right. I know that it's short... but might already be the answer?
planetmaker
CC BY-SA 4.0
2022-06-23T11:54:42.640Z
Could you clarify what you mean by "about to"? If you just mean stars more massive than say $10M_\odot$ (since their lifetimes are very short) then that might be quite a different problem to identifying stars in the last year before the supernova (which isn;t possible).
ProfRob
CC BY-SA 4.0
2022-06-23T13:31:00.997Z
Luminosity type V means they are main sequence stars which are not about to undergo supernova respect to their lives (even their lives are short). So I need stars are at the ending of their evolutionary state. However, Lum type 0-I-II-III-IV means hypergiants, supergiant, brightgiants, giants. If the initial mass is higher that 10M_sun it will turn out the SN II explosion. Here, there is another problem: SN Ia. For SN Ia we need binaries with White Dwarfs near at chandrashekhar limit. So it's not the exact anser what i seek
Aegean
CC BY-SA 4.0
2022-06-24T12:35:40.870Z
Isaac Asimov, "The Currents of Space"
Carl Witthoft
<supernova><star-catalogues>
Which parameters of stars could show they about to undergo a supernova explosion?
Aegean
# Which parameters of stars could show they about to undergo a supernova explosion?

(Asked by: username_0 on 2022-06-23)

I need to seek stars in our galaxy about to undergo a SN from catalogues. I can find stars in our galaxy by setting parallax to a certain value. However, I don't know how to find a parameter which tells me stars are about to undergo SN explosion. What can it be?

**Tags:** supernova, star-catalogues

> **Comments:**
> **username_0**: Most of the red giants don't undergo supernova. Mostly hypergiants, supergiants and WN stars undergo supernova.  
> **username_1**: You're right. I know that it's short... but might already be the answer?  
> **username_2**: Could you clarify what you mean by "about to"? If you just mean stars more massive than say $10M_\odot$ (since their lifetimes are very short) then that might be quite a different problem to identifying stars in the last year before the supernova (which isn;t possible).  
> **username_0**: Luminosity type V means they are main sequence stars which are not about to undergo supernova respect to their lives (even their lives are short). So I need stars are at the ending of their evolutionary state. However, Lum type 0-I-II-III-IV means hypergiants, supergiant, brightgiants, giants. If the initial mass is higher that 10M_sun it will turn out the SN II explosion. Here, there is another problem: SN Ia. For SN Ia we need binaries with White Dwarfs near at chandrashekhar limit. So it's not the exact anser what i seek  
> **username_3**: Isaac Asimov, "The Currents of Space"  

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## 0 answers

