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| Uber massive star found http://www.dragnix.net/Msg_Board/phpBB/viewtopic.php?f=1&t=1890 |
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| Author: | vampirehunter42 [ Thu Jul 22, 2010 5:09 pm ] |
| Post subject: | Uber massive star found |
This is just really awesome. A star that may have been up to or over 300 solar masses. That is the double of what was thought of as the max. It is a little hard to think of that much mass in one star. Link |
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| Author: | Forgotten Dragon's Ire [ Thu Jul 22, 2010 7:13 pm ] |
| Post subject: | Re: Uber massive star found |
wow... that is big... lets see if 1,000,000 earths can fit inside our sun then 300,000,000 would fit inside that single star... |
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| Author: | Corva [ Sat Jul 24, 2010 12:43 pm ] |
| Post subject: | Re: Uber massive star found |
Actually, the sun is just over 300,000 times the mass of Terra. To put it's size into perspective, you'd have to be over 3000AU - 1AU is the distance from Terra to the sun - from to get the same level of sunlight we get here on Earth. In comparison, Neptune is 30AU away. |
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| Author: | Forgotten Dragon's Ire [ Sat Jul 24, 2010 3:16 pm ] |
| Post subject: | Re: Uber massive star found |
Well... i was talking size in volume not mass... so mine was just a statement of how many earths could fit inside the sun |
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| Author: | vampirehunter42 [ Sun Jul 25, 2010 6:59 pm ] |
| Post subject: | Re: Uber massive star found |
DragonRider wrote: Actually, the sun is just over 300,000 times the mass of Terra. To put it's size into perspective, you'd have to be over 3000AU - 1AU is the distance from Terra to the sun - from to get the same level of sunlight we get here on Earth. In comparison, Neptune is 30AU away. What are you talking about? That is more towards Luminosity than mass, and this star is extreamly bright. I has a Luminosity of around (8.7) × 10^6 times the luminosity of the sun. And things like that are not linear. |
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| Author: | Corva [ Mon Jul 26, 2010 6:59 am ] |
| Post subject: | Re: Uber massive star found |
No, I was talking about it's luminosity. Just saying how bright the star is. |
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| Author: | vampirehunter42 [ Wed Jul 28, 2010 1:42 am ] |
| Post subject: | Re: Uber massive star found |
But your logic is still not sound. The sun is 332900 times the mass of 'Terra'. The distance would need to be about 685 AU away to be about the same apparent magnitude as the Sun. Starting with this refined formula: Gotten from here mstar = − 2.72 − 2.5 · log(Lstar/diststar^2) I put -26.73 (the apparent magnatude of the sun as we see it at 1AU) in as mstar Then put 8700000 in for Lstar (the luminosity of R136a1) It will give the distance (diststar) for a set star with the given luminosity and apparent magnatude. -26.73=-2.27 -2.25*log(8700000/diststar^2) -26.73+2.27=-2.25*log(8700000/diststar^2) -24.46=-2.25*log(8700000/diststar^2) -24.46/-2.25=log(8700000/diststar^2) 10.87=log(8700000/diststar^2) 10^10.87= 8700000/diststar^2 74131024130.09=8700000/diststar^2 diststar^2=8700000/74131024130.09 diststar^2= 0.0001173958 diststar= 0.0001173958^-2 diststar= 0.01083327 Light-years. diststar=63,241.1(AU)*0.01083327 (Ly) diststar=685 AU (And sorry I am bad at short cutting my zeroing out of items) I am getting that nice upper feeling that I get when doing math like that. |
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