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Old June 3rd 09, 03:00 AM posted to alt.astronomy,sci.space.policy,sci.space.history,misc.education.science,uk.sci.astronomy
BradGuth
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Default A retrospective look at Sirius B in its red supergiant phase

On May 31, 5:20*pm, BradGuth wrote:
On May 29, 12:12*pm, BradGuth wrote:



On May 23, 10:26*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.


The absolutely vibrant and cosmic stunning Sirius Star/solar system
birth as of 250~300 MBP started off at ~12 Msun, burned through the
vast bulk of its hydrogen extremely fast and only somewhat recently
became worth ~3.5 Msun, as having lost 8.5 of its solar masses, as
such the original mass is still existing elsewhere and most likely
producing photons of its own or as part of some other star/solar
system.


According to the vast majority of the best available experts, 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 to deal with. *However, is there any
limit in physics or quantum whatever as to how many photons this
universe or any given cubic light year can safely contain?


In addition to whatever a dense molecular cloud of hydrogen and helium
represents as an average population of 1e6/cm3 (1e12/m3) for the
natural cosmic evolution process of creating stars and essentially
everything else, how about we start off fairly small in order to
figure out what the maximum number of photons that a given IGM cubic
second (2.7e25 m3) can possibly contain, outside of whatever molecular
clouds or stars represent. *Even though the average cubic second of
the IGM might offer as little as 2.7e30 raw elements of mostly
hydrogen and helium atoms, there’s always the minimum 3D worth of
1024^6/cm3 * 1e6 = 1.153e24 photons/m3 as coexisting within each cubic
meter of IGM, thereby we have a minimum of 3.113e49 photons per cubic
second. *The photons per universe having the volume of 1.7e80 m3 =
6.296e54 ly3 is thereby 6.296e54 * 3.113e49 = 1.96e104 photons/sec,
times the age of our universe and counting.


Notice how certain faith-based mindsets (mostly of the Old Testament
thumping and politically skewed types of the born-again republican and/
or pretend-Atheist kind) are continually obfuscating by 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 those in charge of most everything can’t ever
manage to say with any expertise or much less supercomputer simulated
within their own 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 along with all
of their nifty eye-candy science stuff, but then that’s understandably
setting our ‘no child left behind’ of uneducated truth standards a bit
high.


One of the newest and truly substantially massive star/solar systems
created within our galaxy, as having been situated extremely nearby
our well established solar system, and yet folks here within Usenet/
newsgroup of denial and perpetual naysay land do not seem to know
squat about its beginning, of its absolutely vibrant and fast
evolution (nearly a slow nova that would have given us one hell of a
sun burn, plus x-rays and gamma), much less of its absolutely
impressive red supergiant phase that only most recently converted
Sirius B into a white dwarf.


So, where's all the mainstream physics, of their astronomy eye-candy
science and their stacked composites and highly false colorized images
of its molecular cloud?


Interesting, that if we nicely ask of those in charge and supposedly
as smart as Einstein to put up or shut up, as to sharing the orbital
whereabouts of the original Sirius star/solar system, and/or forbid
our asking anything about its impressive red supergiant phase that
only recently flashed over into a white dwarf, or even that of
locating the remainder of its original cosmic molecular cloud of
perhaps 120,000 solar masses, all the sudden the Usenet/newsgroups
lights go out, and the doors start slamming shut. (it's as deafening
quite as if the Pope or Taliban leader walked unannounced into a local
synagogue)


Same thing goes for asking what should happen if Sirius ABC merge into
one combined nova/supernova, as Sirius B continues to feed off Sirius
A and turns itself into a neutron star. What could possibly go wrong
for us?

~ BG