|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
http://www.wired.com/wiredscience/20...t-double-star/
Astronomers have published a study revealing that NASA’s exoplanet-hunting Kepler telescope has spotted two planets orbiting two suns for the first time. The find proves that circumbinary planetary systems can not only form in, but continue to withstand, the intense pressures exerted by a binary star system — until now, astronomers had only been able to identify binary star systems with one planet in orbit, a find that was confirmed in 2011 when Kepler-16b was spotted. “The presence of a full-fledged circumbinary planetary system orbiting Kepler-47 is an amazing discovery,” commented Greg Laughlin, professor of astrophysics and planetary science at the University of California, in a press release. “These planets are very difficult to form using the currently accepted paradigm, and I believe that theorists, myself included, will be going back to the drawing board to try to improve our understanding of how planets are assembled in dusty circumbinary disks.” They've found single planets orbiting double-stars before, now is the first time they found two planets orbiting double-stars. Not sure why the physics of this was considered so onerous before, but there you go. Yousuf Khan |
#2
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
"Yousuf Khan" wrote in message ...
http://www.wired.com/wiredscience/20...t-double-star/ Astronomers have published a study revealing that NASA’s exoplanet-hunting Kepler telescope has spotted two planets orbiting two suns for the first time. Bwahahahaha! http://faculty.ifmo.ru/butikov/Proje...llection1.html Those are not astronomers, those are egotistical ****wits. -- Lord Androcles, Zeroth Earl of Medway |
#3
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
On Wed, 29 Aug 2012 12:45:19 -0400, Yousuf Khan wrote:
http://www.wired.com/wiredscience/20...t-double-star/ Astronomers have published a study revealing that NASA’s exoplanet-hunting Kepler telescope has spotted two planets orbiting two suns for the first time. The find proves that circumbinary planetary systems can not only form in, but continue to withstand, the intense pressures exerted by a binary star system — until now, astronomers had only been able to identify binary star systems with one planet in orbit, a find that was confirmed in 2011 when Kepler-16b was spotted. “The presence of a full-fledged circumbinary planetary system orbiting Kepler-47 is an amazing discovery,” commented Greg Laughlin, professor of astrophysics and planetary science at the University of California, in a press release. “These planets are very difficult to form using the currently accepted paradigm, and I believe that theorists, myself included, will be going back to the drawing board to try to improve our understanding of how planets are assembled in dusty circumbinary disks.” They've found single planets orbiting double-stars before, now is the first time they found two planets orbiting double-stars. Not sure why the physics of this was considered so onerous before, but there you go. Yousuf Khan Earth-moon is a double planet |
#4
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
On Sep 1, 9:00*am, Pete Weber wrote:
On Wed, 29 Aug 2012 12:45:19 -0400, Yousuf Khan wrote: http://www.wired.com/wiredscience/20...t-double-star/ Astronomers have published a study revealing that NASA’s exoplanet-hunting Kepler telescope has spotted two planets orbiting two suns for the first time. The find proves that circumbinary planetary systems can not only form in, but continue to withstand, the intense pressures exerted by a binary star system — until now, astronomers had only been able to identify binary star systems with one planet in orbit, a find that was confirmed in 2011 when Kepler-16b was spotted. “The presence of a full-fledged circumbinary planetary system orbiting Kepler-47 is an amazing discovery,” commented Greg Laughlin, professor of astrophysics and planetary science at the University of California, in a press release. “These planets are very difficult to form using the currently accepted paradigm, and I believe that theorists, myself included, will be going back to the drawing board to try to improve our understanding of how planets are assembled in dusty circumbinary disks.” They've found single planets orbiting double-stars before, now is the first time they found two planets orbiting double-stars. Not sure why the physics of this was considered so onerous before, but there you go. * *Yousuf Khan Earth-moon is a double planet Very good point, as are most captured moons. Could an existing solar system like ours capture a red dwarf without causing too much trauma for the existing planets? (seem rather unlikely, as even capturing another Jupiter mass would likely spell the demise of most all planets of our inner solar system, although outer planets [those past Saturn] may do just fine unless hit by debris from inner planet collisions) |
#5
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
On 9/2/12 12:40 PM, Brad Guth wrote:
Could an existing solar system like ours capture a red dwarf without causing too much trauma for the existing planets? If the sun encountered another star (say a red dwarf) the Keplerian orbit of each would be hyperbolic for each star and the encounter would be one time. Capture requires, perhaps a third star or transfer of momentum via drag. So it very unlikely that our sun would capture a red dwarf. |
#6
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
On Sep 2, 10:48*am, Sam Wormley wrote:
On 9/2/12 12:40 PM, Brad Guth wrote: Could an existing solar system like ours capture a red dwarf without causing too much trauma for the existing planets? * *If the sun encountered another star (say a red dwarf) the Keplerian * *orbit of each would be hyperbolic for each star and the encounter * *would be one time. Capture requires, perhaps a third star or transfer * *of momentum via drag. So it very unlikely that our sun would capture * *a red dwarf. I can agree with that, although the nearby encounter with Sirius might not count as a capture of our solar system by the superior mass of Sirius, and yet it certainly could represent a cosmological cycle of an encounter worthy of melting the last portions of ice on Earth. However, if the encounter with a red dwarf included its lithobraking via Saturn or Jupiter, as such could allow for the capture. There are computer simulators that'll help demonstrate this and other possible methods of our solar system capturing another sun, or that of our solar system being captured by something else. |
#7
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
Dear Brad Guth:
On Tuesday, September 4, 2012 7:07:01 AM UTC-7, Brad Guth wrote: .... However, if the encounter with a red dwarf included its lithobraking via Saturn or Jupiter, as such could allow for the capture. Nope. "Conservation of angular momentum". Were the red dwarf to come close enough to either of those two gas giants, it would consume them, and the Sun would have one less gas giant as it went back out-system. David A. Smith |
#8
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
On 01/09/2012 12:00 PM, Pete Weber wrote:
Earth-moon is a double planet Not that kind of a double planet, they're just talking about finding two separate planets in orbit around a double-star system. Yousuf Khan |
#9
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
On 02/09/2012 1:40 PM, Brad Guth wrote:
Could an existing solar system like ours capture a red dwarf without causing too much trauma for the existing planets? (seem rather unlikely, as even capturing another Jupiter mass would likely spell the demise of most all planets of our inner solar system, although outer planets [those past Saturn] may do just fine unless hit by debris from inner planet collisions) No, capturing something like a star would require the ejection of a planet, perhaps several planets. Namely the more massive gas planets. Yousuf Khan |
#10
|
|||
|
|||
Astronomers Find Double-Planet, Double-Star System
On Sep 4, 8:20*am, dlzc wrote:
Dear Brad Guth: On Tuesday, September 4, 2012 7:07:01 AM UTC-7, Brad Guth wrote: ... However, if the encounter with a red dwarf included its lithobraking via Saturn or Jupiter, as such could allow for the capture. Nope. *"Conservation of angular momentum". *Were the red dwarf to come close enough to either of those two gas giants, it would consume them, and the Sun would have one less gas giant as it went back out-system. David A. Smith Your purely subjective based naysay is noted. According to those of your kind, it's impossible for our satellites to orbit anything they encounter, such as our moon or mars. Computer simulators of captures tend to disagree with your automatic naysay. Of course mainstream obfuscate in order to exclude enough evidence, and you're good to go. |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Astronomers find tiny planet orbiting tiny star (Forwarded) | Andrew Yee | Astronomy Misc | 1 | June 4th 08 03:41 AM |
Astronomers find tiny planet orbiting tiny star (Forwarded) | Andrew Yee[_1_] | News | 0 | June 3rd 08 11:16 PM |
HD033203 - a colorful after-work double spring/winter double - Apr | canopus56 | Amateur Astronomy | 3 | April 3rd 06 10:51 PM |
ASTRONOMERS FIND SMALLEST EXTRASOLAR PLANET YET AROUND NORMAL STAR(STScI-PR06-06) | INBOX ASTRONOMY: NEWS ALERT | Amateur Astronomy | 1 | January 25th 06 08:53 PM |
ASTRONOMERS FIND SMALLEST EXTRASOLAR PLANET YET AROUND NORMAL STAR(STScI-PR06-06) | INBOX ASTRONOMY: NEWS ALERT | Astronomy Misc | 0 | January 25th 06 07:05 PM |