Comments on: Binary planetary systems caught in the act of forming! http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/ I am an astronomer, writer, and skeptic. I likes reality the way it is, and I aims to keep it that way. My real name is Phil Plait, and I run the Bad Astronomy blog. Tue, 24 Nov 2009 19:44:17 -0600 http://wordpress.org/?v=2.8.4 hourly 1 By: John Tobin http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/comment-page-1/#comment-204795 John Tobin Sat, 08 Aug 2009 20:06:20 +0000 http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/#comment-204795 "and worse, at a distance of only a few light years, those titanic explosions will do serious damage to any planets, and in fact could blow away those disks long before planets could form." Actually, the disk around a young star could survive so long as the supernova is more than a light year or so away. In fact, there is evidence that a supernova occured very year our solar system while it was forming. This means that our sun probably formed in a cluster, possibly like Orion. See the article from a few years ago: http://www.space.com/scienceastronomy/061024_sun_sisters.html “and worse, at a distance of only a few light years, those titanic explosions will do serious damage to any planets, and in fact could blow away those disks long before planets could form.”

Actually, the disk around a young star could survive so long as the supernova is more than a light year or so away. In fact, there is evidence that a supernova occured very year our solar system while it was forming. This means that our sun probably formed in a cluster, possibly like Orion. See the article from a few years ago:

http://www.space.com/scienceastronomy/061024_sun_sisters.html

]]> By: Krupin http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/comment-page-1/#comment-198562 Krupin Mon, 13 Jul 2009 03:07:55 +0000 http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/#comment-198562 Traditional hypotheses about formation of planets by a method of a snowball suffer crash. All becomes clearer, that planetary systems are formed in double systems. And the relative positioning of planets is defined by influence of the second component. In my opinion planetary systems are formed namely in binary systems. Our solar system is no exception to this rule. The role of the second component in it make an underdeveloped Star - the Jupiter, which is formed by special way. Then Jupiter promotes formation of other planets. http://www.thescienceforum.com/viewtopic.php?t=15901&start=0 Traditional hypotheses about formation of planets by a method of a snowball suffer crash. All becomes clearer, that planetary systems are formed in double systems. And the relative positioning of planets is defined by influence of the second component.

In my opinion planetary systems are formed namely in binary systems. Our solar system is no exception to this rule. The role of the second component in it make an underdeveloped Star – the Jupiter, which is formed by special way. Then Jupiter promotes formation of other planets. http://www.thescienceforum.com/viewtopic.php?t=15901&start=0

]]> By: Astronomy Goodness « The Skeptic Detective http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/comment-page-1/#comment-198343 Astronomy Goodness « The Skeptic Detective Fri, 10 Jul 2009 10:33:56 +0000 http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/#comment-198343 [...] up Phil Plait provides a detailed look at the first known binary solar sytem in formation. That’s a binary [...] [...] up Phil Plait provides a detailed look at the first known binary solar sytem in formation. That’s a binary [...]

]]> By: Distant Early Warning » Blog Archive » Not Science Fiction Anymore http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/comment-page-1/#comment-196934 Distant Early Warning » Blog Archive » Not Science Fiction Anymore Sun, 05 Jul 2009 14:51:52 +0000 http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/#comment-196934 [...] Scientists using the Hubble Space Telescope recently discovered a system they named 253-1536 because, as far as names go, it’s obvious that astronomers aren’t allowed to use their imagination. I blame the IAU for this, the same organization who decided that Pluto is no longer a planet because – well, because they say so. This system is a binary star formation where two stars orbit each other around a common centre of gravity. And, in this case, each star has a telltale disc of material surrounding them that is highly indicative of planet formation. [...] [...] Scientists using the Hubble Space Telescope recently discovered a system they named 253-1536 because, as far as names go, it’s obvious that astronomers aren’t allowed to use their imagination. I blame the IAU for this, the same organization who decided that Pluto is no longer a planet because – well, because they say so. This system is a binary star formation where two stars orbit each other around a common centre of gravity. And, in this case, each star has a telltale disc of material surrounding them that is highly indicative of planet formation. [...]

]]> By: ZERO http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/comment-page-1/#comment-196852 ZERO Sat, 04 Jul 2009 20:03:43 +0000 http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/#comment-196852 <strong> This one needs way more views! B-) This one needs way more views! B-)

]]> By: Een dubbel planetensysteem in wordingbijAstroblogs http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/comment-page-1/#comment-196752 Een dubbel planetensysteem in wordingbijAstroblogs Sat, 04 Jul 2009 07:11:45 +0000 http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/#comment-196752 [...] In de Orionnevel (M42) in het sterrenbeeld Orion is een dubbelstersysteem ontdekt waarbij zich rondom beide sterren een platte stofwolk bevindt die zich vermoedelijk tot een planetensysteem ontwikkeld. Het dubbelstersysteem, dat de naam 253-1536 heeft gekregen – lekker makkelijk om te onthouden – was eerder al door de Hubble ruimtetelescoop gefotografeerd. Dat zie je op de afbeelding rechts. Maar daarop is alleen rondom de linkerster, 253-1536A, een donkere stofschijf te zien. Van 253-1536B, rechts op de foto zien we alleen de ster. Onderzoek met behulp van de Submillimeter Array (SMA)1 op Mauna Kea (Hawaï) toont aan dat ook rondom 253-1536B een stofschijf zit. Die wordt alleen in het optische gebied, waarin Hubble kijkt, overstraalt door de ster. Uit de SMA-afbeelding blijkt dat de stofschijf rondom 253-1536B optisch geheel wordt overstraald door de ster, die een rode dwergster is. De stofschijf rondom 253-1536A is zo’n 70 Jupitermassa’s groot en die rondom253-1536B 20 Jupitermassa’s. Het planetensysteem rondom de zon is alles bij elkaar geraapt zo’n 2 Jupitermassa’s zwaar, dus we praten over zware systemen. Het is voor het eerst dat sterrenkundigen een dubbelster hebben ontdekt met ieder een stofschijf eromheen. Het systeem 253-1536 bevindt zich overigens niet in de kern van de Orionnevel, maar ligt er ongeveer 1 parsec (ruim drie lichtjaar) vandaan. Zou dat wel het geval zijn geweest dan zou er van de stofschijven vanwege de intense straling aldaar weinig over zijn gebleven.  Bron: Bad Astronomy. [...] [...] In de Orionnevel (M42) in het sterrenbeeld Orion is een dubbelstersysteem ontdekt waarbij zich rondom beide sterren een platte stofwolk bevindt die zich vermoedelijk tot een planetensysteem ontwikkeld. Het dubbelstersysteem, dat de naam 253-1536 heeft gekregen – lekker makkelijk om te onthouden – was eerder al door de Hubble ruimtetelescoop gefotografeerd. Dat zie je op de afbeelding rechts. Maar daarop is alleen rondom de linkerster, 253-1536A, een donkere stofschijf te zien. Van 253-1536B, rechts op de foto zien we alleen de ster. Onderzoek met behulp van de Submillimeter Array (SMA)1 op Mauna Kea (Hawaï) toont aan dat ook rondom 253-1536B een stofschijf zit. Die wordt alleen in het optische gebied, waarin Hubble kijkt, overstraalt door de ster. Uit de SMA-afbeelding blijkt dat de stofschijf rondom 253-1536B optisch geheel wordt overstraald door de ster, die een rode dwergster is. De stofschijf rondom 253-1536A is zo’n 70 Jupitermassa’s groot en die rondom253-1536B 20 Jupitermassa’s. Het planetensysteem rondom de zon is alles bij elkaar geraapt zo’n 2 Jupitermassa’s zwaar, dus we praten over zware systemen. Het is voor het eerst dat sterrenkundigen een dubbelster hebben ontdekt met ieder een stofschijf eromheen. Het systeem 253-1536 bevindt zich overigens niet in de kern van de Orionnevel, maar ligt er ongeveer 1 parsec (ruim drie lichtjaar) vandaan. Zou dat wel het geval zijn geweest dan zou er van de stofschijven vanwege de intense straling aldaar weinig over zijn gebleven.  Bron: Bad Astronomy. [...]

]]> By: Gregg Weber http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/comment-page-1/#comment-196488 Gregg Weber Fri, 03 Jul 2009 04:40:12 +0000 http://blogs.discovermagazine.com/badastronomy/2009/07/02/binary-planetary-systems-caught-in-the-act-of-forming/#comment-196488 I read #2 and see your point about not being able to see much. Think of it as looking at a glass shelled egg that is one foot away. (OK for you to think metric...). As you see the circumference of the shell, assuming you are looking at the major axis, you would be looking through the most glass and thus be able to have the best chance of seeing the shell. To you it would look like a ring. If you were inside the egg, even though it might be much closer, you would look through the shells thickness in every direction and can only detect the differences from one place to another. Is there any clouds nearby that we can't see? I would suspect that we are outside the cloud that we were originally formed in and in the many years and rotations it's remnants are probably far far away. Depending on how eccentric our orbit is when we left and what other gravity fields either of us got too close to, it could be closer, further, up meaning closer to one saucer plate, or down meaning closer to the other saucer plate stacked rim to rim, and many other varibles that you probably know much more about and I don't have the time to list. I read #2 and see your point about not being able to see much. Think of it as looking at a glass shelled egg that is one foot away. (OK for you to think metric…). As you see the circumference of the shell, assuming you are looking at the major axis, you would be looking through the most glass and thus be able to have the best chance of seeing the shell. To you it would look like a ring. If you were inside the egg, even though it might be much closer, you would look through the shells thickness in every direction and can only detect the differences from one place to another.

Is there any clouds nearby that we can’t see? I would suspect that we are outside the cloud that we were originally formed in and in the many years and rotations it’s remnants are probably far far away. Depending on how eccentric our orbit is when we left and what other gravity fields either of us got too close to, it could be closer, further, up meaning closer to one saucer plate, or down meaning closer to the other saucer plate stacked rim to rim, and many other varibles that you probably know much more about and I don’t have the time to list.

]]>