Giant exploding star outshines previous supernovas

05-08-2007, 08:07 PM

http://edition.cnn.com/2007/TECH/spa...ova/index.html

Scientists believe supernova SN 2006gy expelled many of its outer layers in an eruption before its violent collapse.

piercehawkeye45 · 05-09-2007, 02:00 AM

Wow, thats cool.

Urbane Guerrilla · 05-10-2007, 02:19 AM

Part of their difficulty in dealing with this phenomenon in theory is that they don't even know if they have anything to compare it with. Some are guessing maybe Eta Carinae might be a similar object. I'll have to nose around to see what the theoretical lifespan of a 150 Msun star as a main-sequence object would be. Shockingly brief, I suspect.

Urbane Guerrilla · 05-11-2007, 12:22 AM

So... Eta Carinae and this object: Type III supernovas, anyone?

TheMercenary · 05-11-2007, 07:30 AM

Very cool stuff. Keep looking up.

Elspode · 05-14-2007, 12:25 AM

Quote:

Originally Posted by Urbane Guerrilla

I'll have to nose around to see what the theoretical lifespan of a 150 Msun star as a main-sequence object would be. Shockingly brief, I suspect.

On the cosmic scale, I'd say roughly equivalent to a firecracker. A very bright blue firecracker.

Urbane Guerrilla · 05-15-2007, 11:28 AM

Wiki's Star entry, with some passing mention of star lifespans. Scroll down a bit less than halfway to "Mass."

It gives a lifespan of roughly a million years for 150 Msun. Several million years for 100 Msun.

It points out why 150 solar masses seems to be the upper limit, too. Any bigger, and the star can't radiate its energy output through its photosphere fast enough -- which means it blows off its outer layers, apparently until stability is reached, at a lower burning rate. Putting it mildly.

05-08-2007, 08:07 PM	#1
rkzenrage Guest Posts: n/a	Giant exploding star outshines previous supernovas http://edition.cnn.com/2007/TECH/spa...ova/index.html Scientists believe supernova SN 2006gy expelled many of its outer layers in an eruption before its violent collapse.

05-10-2007, 02:19 AM	#3
Urbane Guerrilla Person who doesn't update the user title Join Date: Jul 2002 Location: Southern California Posts: 6,674	Part of their difficulty in dealing with this phenomenon in theory is that they don't even know if they have anything to compare it with. Some are guessing maybe Eta Carinae might be a similar object. I'll have to nose around to see what the theoretical lifespan of a 150 Msun star as a main-sequence object would be. Shockingly brief, I suspect. __________________ Wanna stop school shootings? End Gun-Free Zones, of course.

05-11-2007, 12:22 AM	#4
Urbane Guerrilla Person who doesn't update the user title Join Date: Jul 2002 Location: Southern California Posts: 6,674	So... Eta Carinae and this object: Type III supernovas, anyone? __________________ Wanna stop school shootings? End Gun-Free Zones, of course.

05-11-2007, 07:30 AM	#5
TheMercenary “Hypocrisy: prejudice with a halo” Join Date: Mar 2007 Location: Savannah, Georgia Posts: 21,393	Very cool stuff. Keep looking up. __________________ Anyone but the this most fuked up President in History in 2012!

05-15-2007, 11:28 AM	#7
Urbane Guerrilla Person who doesn't update the user title Join Date: Jul 2002 Location: Southern California Posts: 6,674	Wiki's Star entry, with some passing mention of star lifespans. Scroll down a bit less than halfway to "Mass." It gives a lifespan of roughly a million years for 150 Msun. Several million years for 100 Msun. It points out why 150 solar masses seems to be the upper limit, too. Any bigger, and the star can't radiate its energy output through its photosphere fast enough -- which means it blows off its outer layers, apparently until stability is reached, at a lower burning rate. Putting it mildly. __________________ Wanna stop school shootings? End Gun-Free Zones, of course.

05-09-2007, 02:00 AM	#2
piercehawkeye45 Franklin Pierce Join Date: Oct 2006 Location: Minnesota Posts: 3,695	Wow, thats cool.

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