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Astronomers Find Sun’s ‘Long-Lost Brother,’ Pave Way for Family Reunion
Astronomers Find Sun’s ‘Long-Lost Brother,’ Pave Way for Family Reunion
| News http://www.utexas.edu/news/2014/05/0...ing-astronomy/ "AUSTIN, Texas — A team of researchers led by astronomer Ivan Ramirez of The University of Texas at Austin has identified the first “sibling” of the sun — a star almost certainly born from the same cloud of gas and dust as our star. Ramirez’s methods will help astronomers find other solar siblings, which could lead to an understanding of how and where our sun formed, and how our solar system became hospitable for life. The work appears in the June 1 issue of The Astrophysical Journal." |
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Astronomers Find Sun's 'Long-Lost Brother,' Pave Way for Family Reunion
On Friday, May 9, 2014 6:10:09 PM UTC-7, Yousuf Khan wrote:
Astronomers Find Sunï¿ 1/2 s ï¿ 1/2 Long-Lost Brother,ï¿ 1/2 Pave Way for Family Reunion | News http://www.utexas.edu/news/2014/05/0...ing-astronomy/ "AUSTIN, Texas ï¿ 1/2 A team of researchers led by astronomer Ivan Ramirez of The University of Texas at Austin has identified the first ï¿ 1/2 siblingï¿ 1/2 of the sun ï¿ 1/2 a star almost certainly born from the same cloud of gas and dust as our star. Ramirezï¿ 1/2 s methods will help astronomers find other solar siblings, which could lead to an understanding of how and where our sun formed, and how our solar system became hospitable for life. The work appears in the June 1 issue of The Astrophysical Journal." There's actually a fair number of solar siblings as having been cataloged for more than three years, that should be of the same cosmic vintage as our sun, and roughly of a similar mass which might reasonably suggest their having a similar assortment of planets. http://arxiv-web3.library.cornell.edu/pdf/1405.1723.pdf |
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Astronomers Find Sun's 'Long-Lost Brother,' Pave Way for FamilyReunion
On 10/05/2014 7:42 PM, Brad Guth wrote:
There's actually a fair number of solar siblings as having been cataloged for more than three years, that should be of the same cosmic vintage as our sun, and roughly of a similar mass which might reasonably suggest their having a similar assortment of planets. http://arxiv-web3.library.cornell.edu/pdf/1405.1723.pdf Looks like this is the first one that was confirmed, because this star HD 162826 also appears in the list above. But in the list above, it is simply called "a candidate". Yousuf Khan |
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Astronomers Find Sun's 'Long-Lost Brother,' Pave Way for Family Reunion
On Sunday, May 11, 2014 8:01:37 AM UTC-7, Yousuf Khan wrote:
On 10/05/2014 7:42 PM, Brad Guth wrote: There's actually a fair number of solar siblings as having been cataloged for more than three years, that should be of the same cosmic vintage as our sun, and roughly of a similar mass which might reasonably suggest their having a similar assortment of planets. http://arxiv-web3.library.cornell.edu/pdf/1405.1723.pdf Looks like this is the first one that was confirmed, because this star HD 162826 also appears in the list above. But in the list above, it is simply called "a candidate". Yousuf Khan It seems to have been moving away too fast (do the math and report back), although its mass and elements are indeed similar enough. What's pushing these relatively nearby stars apart? |
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Astronomers Find Sun's 'Long-Lost Brother,' Pave Way for FamilyReunion
On 11/05/2014 11:30 AM, Brad Guth wrote:
It seems to have been moving away too fast (do the math and report back), although its mass and elements are indeed similar enough. What's pushing these relatively nearby stars apart? Because open clusters are at the mercy of every other star in the plane of the galaxy, so they break apart. Unlike closed globular clusters which only feel each other's gravity most of the time. Yousuf Khan |
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