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I bet you think we’ve seen just about everything Sirius has to offer.
(think again) http://www.cosmicastronomy.com/oscillat.htm#sirius Red giant stars are many, and yet remain 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 bloated size and 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 rather 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 without any applied technology) “Red Giant Star Found to Have Massive Tail” The obvious bow-wave proves that even 64 km/s is pushing towards the intergalactic terminal velocity of stellar motion for items of this volumetric size. http://www.efluxmedia.com/news_Red_G...l_077 84.html Mira_A of 1.2 M solar mass and 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.” Trekking it’s way through space at a rogue velocity of 64 km/s none the less. 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 (5001000 solar radii), as viewed in visible and near IR as that of a red supergiant star. http://xmm.esac.esa.int/external/xmm...aab_v2_col.pdf 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 somewhat better than two fold the mass of the original Sirius B, as Betelgeuse currently having expanded to 1000 solar radii and growing, it'll certainly become a truly impressive nova whenever it transforms into a white dwarf that’s nearly the size of Saturn. The soon to be renewed and improved Hubble should accomplish the improved spectrum, resolution and several extra DB in dynamic range of imaging 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. Perhaps there’s too much information about the Sirius star/solar system for the public to grasp without causing more faith-based harm than good. http://www.cosmicastronomy.com/oscillat.htm#sirius ~ BG |
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