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On May 19, 9:27*am, BradGuth wrote:
On Apr 27, 4:47 am, BradGuth wrote: Red giant stars are many, and yet still a little hard to come by, as only a few public images of whatever is within 1000 light years seem to exist that fit within the color saturated eye-candy profiles that we’ve been taught to accept. *However, the visible spectrum is extremely limited as to what is otherwise technically accessible from just above and below our genetically limited and thus inferior visual spectrum. (seems entirely odd that our human evolution was so careless in having discarded so much visual capability, in that other creatures seem to have a far wider visual spectrum capability that includes some UV and IR) “Red Giant Star Found to Have Massive Tail” *http://www.efluxmedia.com/news_Red_G...Have_Massive_T... *Mira A of several hundred solar radii (UV colorized as bluish): “A dying star situated 400 light years away from us exhibits an unusual and massive tail of heated gas that spreads for more than 13 light years.” *http://en.wikipedia.org/wiki/Mira *http://www.nasa.gov/mission_pages/galex/20070815/a.html Sirius B could have been much like an image of Mira A, except a whole lot larger (1000 solar radii), as viewed in visible and near IR *http://xmm.esac.esa.int/external/xmm...osium/173770_m... Mira A and lots more composite observationology from FAS *http://www.fas.org/irp/imint/docs/rst/Sect20/A6.html There are many possibilities, as for how Sirius B used to function as a truly massive (9 solar mass) star, thereby extremely hot and fast burning prior to becoming a red supergiant, creating an impressive planetary nebula phase before ending as the little white dwarf. *For all we know Sirius B was even a variable kind of red giant and then perhaps a slow nova flashover phase prior to finishing off as the white dwarf. These following examples are probably similar or perhaps representing a slightly smaller version of what the Sirius star/solar system looked like once Sirius B had started turning itself from an impressive red supergiant into a white dwarf of perhaps 1/8th its original mass, taking roughly 64~96,000 years for this explosive mass shedding phase to happen. *A few tens of billions of years later is when such a white dwarf eventually becomes a black dwarf, kind of black diamond spent star, in that our universe may or may not be quite old enough to display such examples. *http://en.wikipedia.org/wiki/Planetary_nebula *http://en.wikipedia.org/wiki/Helix_Nebula *http://en.wikipedia.org/wiki/Cat%27s_Eye_Nebula *http://apod.nasa.gov/apod/ap031207.html *http://www.uv.es/jrtorres/index6.html Betelgeuse has been a massive red giant at 20+ fold the mass of our sun, and likely worth nearly 3 fold the mass of the original Sirius B, and currently expanded to 1000 solar radii, and it'll be truly impressive nova whenever it transforms into a white dwarf nearly the size of Jupiter. The soon to be renewed and improved Hubble should accomplish the improved spectrum and resolution of most everything, along with other existing and soon to be deployed telescopes should give us even better composite examples of what Sirius B used to look like. *This may give some of us a better interpretation as to what transpired right next door to us, as well as having unavoidably contributed to some of what our solar system has to offer. Sirius B was quite recently (in cosmological terms of the universe age) a very impressive red supergiant of 1000 solar radii. *When the helium flashover phase happened it was a truly significant event that may have lasted for several minutes, as well as having given off a good dosage of hard-X-rays and gamma. *Sirius B would also have lost its tidal radius grip on any number of secondary stars, planets and moons, that except Sirius C went elsewhere, including a few items that may have headed towards our relatively passive and nearby solar system. Even so, this terrific flashover event should actually still be visible to us as a secondary/recoil of reflected photons, possibly even as coming off the original molecular cloud that created Sirius in the first place, and as such simply can not be too far away unless having been entirely blown away as though uniformly disbursed by the Sirius B solar wind and subsequent red supergiant phase. *However, the remaining 99.999% of that molecular cloud still has to exist somewhere. Detecting such old photons is much like having an eye-candy time machine that's always looking back in time, whereas the repaired and upgraded Hubble should prove as being suited for this worthwhile task of detecting such old secondary/recoil flashover photons, though newer astronomy instruments as having been deployed by ESA would certainly be many tens of fold more sensitive and otherwise specifically capable of finding this most recent of molecular cloud remainders. However, seems odd that our own sun would not have attracted some portion of that very same hydrogen and helium saturated cloud, that is if there ever was any such molecular cloud of perhaps 120,000 solar masses to begin with. The mass of our universe stays exactly the same, no matters what takes place, but as a whole we seem to keep getting more and more of them photons (mostly of those we can’t see) and possibly even more of those free/rogue electrons and positrons. However, is there any limit in physics as to how many photons this universe or any given cubic light year can contain? In addition to whatever a dense molecular cloud of hydrogen and helium represents as an average population of 1e6/cm3 (1e12/m3) for creating stars and essentially everything else, how about we start off fairly small in order to figure out what the maximum number of photons/sec that a given cubic second or cubic light year (3e8^3 or 27e24 m3) can possibly contain. Notice how certain faith-based mindsets (mostly of the Old Testament and politically skewed types of the republican pretend-Atheist kind) are continually acting oblivious and/or dumbfounded as to most of everything around us, especially if such involves anything of ETs or bad and otherwise unexpectedly spendy as hell. Of course their not willing to share the truth about much of anything doesn’t exactly help. Secondly, notice how they can't ever manage to say with any expertise or much less supercomputer simulated within peer replicated results, as to where exactly the very recent creation/birth of the truly massive Sirius star/solar system took place, other than insisting it was supposedly nowhere nearby our solar system. However, I find these highly subjective and typically obfuscation loaded kinds of replies somewhat disingenuous and/or less believable than LeapFrog published infomercial physics and their eye-candy science stuff, but then that’s understandably setting our ‘no child left behind’ of uneducated truth standards a bit high. ~ BG |
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On May 22, 9:52*am, BradGuth wrote:
On May 19, 9:27*am, BradGuth wrote: On Apr 27, 4:47 am, BradGuth wrote: Red giant stars are many, and yet still a little hard to come by, as only a few public images of whatever is within 1000 light years seem to exist that fit within the color saturated eye-candy profiles that we’ve been taught to accept. *However, the visible spectrum is extremely limited as to what is otherwise technically accessible from just above and below our genetically limited and thus inferior visual spectrum. (seems entirely odd that our human evolution was so careless in having discarded so much visual capability, in that other creatures seem to have a far wider visual spectrum capability that includes some UV and IR) “Red Giant Star Found to Have Massive Tail” *http://www.efluxmedia.com/news_Red_G...Have_Massive_T... *Mira A of several hundred solar radii (UV colorized as bluish): “A dying star situated 400 light years away from us exhibits an unusual and massive tail of heated gas that spreads for more than 13 light years.” *http://en.wikipedia.org/wiki/Mira *http://www.nasa.gov/mission_pages/galex/20070815/a.html Sirius B could have been much like an image of Mira A, except a whole lot larger (1000 solar radii), as viewed in visible and near IR *http://xmm.esac.esa.int/external/xmm...osium/173770_m... Mira A and lots more composite observationology from FAS *http://www.fas.org/irp/imint/docs/rst/Sect20/A6.html There are many possibilities, as for how Sirius B used to function as a truly massive (9 solar mass) star, thereby extremely hot and fast burning prior to becoming a red supergiant, creating an impressive planetary nebula phase before ending as the little white dwarf. *For all we know Sirius B was even a variable kind of red giant and then perhaps a slow nova flashover phase prior to finishing off as the white dwarf. These following examples are probably similar or perhaps representing a slightly smaller version of what the Sirius star/solar system looked like once Sirius B had started turning itself from an impressive red supergiant into a white dwarf of perhaps 1/8th its original mass, taking roughly 64~96,000 years for this explosive mass shedding phase to happen. *A few tens of billions of years later is when such a white dwarf eventually becomes a black dwarf, kind of black diamond spent star, in that our universe may or may not be quite old enough to display such examples. *http://en.wikipedia.org/wiki/Planetary_nebula *http://en.wikipedia.org/wiki/Helix_Nebula *http://en.wikipedia.org/wiki/Cat%27s_Eye_Nebula *http://apod.nasa.gov/apod/ap031207.html *http://www.uv.es/jrtorres/index6.html Betelgeuse has been a massive red giant at 20+ fold the mass of our sun, and likely worth nearly 3 fold the mass of the original Sirius B, and currently expanded to 1000 solar radii, and it'll be truly impressive nova whenever it transforms into a white dwarf nearly the size of Jupiter. The soon to be renewed and improved Hubble should accomplish the improved spectrum and resolution of most everything, along with other existing and soon to be deployed telescopes should give us even better composite examples of what Sirius B used to look like. *This may give some of us a better interpretation as to what transpired right next door to us, as well as having unavoidably contributed to some of what our solar system has to offer. Sirius B was quite recently (in cosmological terms of the universe age) a very impressive red supergiant of 1000 solar radii. *When the helium flashover phase happened it was a truly significant event that may have lasted for several minutes, as well as having given off a good dosage of hard-X-rays and gamma. *Sirius B would also have lost its tidal radius grip on any number of secondary stars, planets and moons, that except Sirius C went elsewhere, including a few items that may have headed towards our relatively passive and nearby solar system. Even so, this terrific flashover event should actually still be visible to us as a secondary/recoil of reflected photons, possibly even as coming off the original molecular cloud that created Sirius in the first place, and as such simply can not be too far away unless having been entirely blown away as though uniformly disbursed by the Sirius B solar wind and subsequent red supergiant phase. *However, the remaining 99.999% of that molecular cloud still has to exist somewhere. Detecting such old photons is much like having an eye-candy time machine that's always looking back in time, whereas the repaired and upgraded Hubble should prove as being suited for this worthwhile task of detecting such old secondary/recoil flashover photons, though newer astronomy instruments as having been deployed by ESA would certainly be many tens of fold more sensitive and otherwise specifically capable of finding this most recent of molecular cloud remainders. However, seems odd that our own sun would not have attracted some portion of that very same hydrogen and helium saturated cloud, that is if there ever was any such molecular cloud of perhaps 120,000 solar masses to begin with. The mass of our universe stays exactly the same, no matters what takes place, but as a whole we seem to keep getting more and more of them photons (mostly of those we can’t see) and possibly even more of those free/rogue electrons and positrons. *However, is there any limit in physics as to how many photons this universe or any given cubic light year can contain? In addition to whatever a dense molecular cloud of hydrogen and helium represents as an average population of 1e6/cm3 (1e12/m3) for creating stars and essentially everything else, how about we start off fairly small in order to figure out what the maximum number of photons/sec that a given cubic second or cubic light year (3e8^3 or 27e24 m3) can possibly contain. Notice how certain faith-based mindsets (mostly of the Old Testament and politically skewed types of the republican pretend-Atheist kind) are continually acting oblivious and/or dumbfounded as to most of everything around us, especially if such involves anything of ETs or bad and otherwise unexpectedly spendy as hell. *Of course their not willing to share the truth about much of anything doesn’t exactly help. Secondly, notice how they can't ever manage to say with any expertise or much less supercomputer simulated within peer replicated results, as to where exactly the very recent creation/birth of the truly massive Sirius star/solar system took place, other than insisting it was supposedly nowhere nearby our solar system. *However, I find these highly subjective and typically obfuscation loaded kinds of replies somewhat disingenuous and/or less believable than LeapFrog published infomercial physics and their eye-candy science stuff, but then that’s understandably setting our ‘no child left behind’ of uneducated truth standards a bit high. Same mass = more and more photons. What gives? Where's the secondary/recoil of reflected photons from the Sirius B helium flashover? ~ BG |
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Thread | Thread Starter | Forum | Replies | Last Post |
A retrospective look at Sirius B in its red supergiant phase | BradGuth | UK Astronomy | 81 | August 18th 09 05:16 PM |
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A retrospective look at Sirius B in its red supergiant phase | BradGuth | History | 3 | May 4th 09 06:27 PM |