Astronomers discover new kind of supernova

PhysOrg ^ | 3/26/13

[Smartisan]

cool, very interesting. thanks

[Verginius Rufus]

A helium-dominated star is contrasted with a "normal" star? Who are we to judge?

Smash hydrogenonormity!

[fieldmarshaldj]

*ping*

[JaguarXKE]

aka the “Super-duperNova”

[SunkenCiv]

Thanks fieldmarshaldj, a four-list pingworthy topic if ever there was one.

[SunkenCiv]

Thanks fieldmarshaldj.

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[SunkenCiv]

Thanks fieldmarshaldj.

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[SunkenCiv]

Thanks fieldmarshaldj.

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[NYer]

[dfwgator]

A champagne supernova?

[kitchen]

Material from a hot, blue helium star at right is funneling toward a carbon/oxygen white dwarf star …

None of them appeared in elliptical galaxies, which are filled with old stars. This suggests that Type Iax supernovas come from young star systems.

Somebody help me out here. Wouldn’t a carbon/oxygen white dwarf star be a second generation star? Are second generation stars consistent with young systems?

[Bullish]

Can’t all these supernova’s just get along?

[Ernest_at_the_Beach]

I thought caastrophism only involved us Humans?

[LibWhacker]

I believe you are right. If I understand things correctly, elements of the periodic table, up to and including carbon, can be created in stars. No problem. Elements heavier than that, of which oxygen is one, can only be created in a supernova. But as you seem to suspect, a “young” system need not be a first generation system; i.e., ‘young’ in this context only means the star in question formed recently. The cloud of gas and dust, out of which it formed, may have contained heavy elements that were thrown out by an older supernova.

[left that other site]

Cool!

[SunkenCiv]

Hey, I had raw broccoli for lunch, okay? ;’)

[Squawk 8888]

Not sure, but I think it’s possible for a star to start fusing helium into carbon & oxygen when it runs out of hydrogen.

[goodnesswins]

Is it “gay?” (Seems like everything else is....)

[kitchen]

Hey, thanks.

Another thing that bothers me, isn't the plural of nova novae? Sorry, I took Greek rather than Latin, so I can't say for sure. Maybe I remember the spelling from my epoch 1970 Nortons.