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A Stellar Collision within The Milky Way?

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Yousuf Khan

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Nov 18, 2009, 3:57:29 PM11/18/09
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Star Goes Rogue in Untimely Collision : Discovery News
"The idea being kicked around is that V838 Mon. was originally a
triple-star system. A gravitational billiard game among the three stars
sent two of them careening together and explosively merge into a single
star. The heat from the impact caused the new star to swell up, like a
runaway hot air balloon. This is supported by the observation that a few
weeks after the initial burst, the stars suddenly got an additional
1,000 times brighter in just on day. This might have been from the
nuclear cores of the stars merging."
http://news.discovery.com/space/star-goes-rogue-in-untimely-collision.html

BradGuth

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Nov 18, 2009, 8:00:47 PM11/18/09
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> nuclear cores of the stars merging."http://news.discovery.com/space/star-goes-rogue-in-untimely-collision...

Yes, stars do blueshift right into one another, worse yet when
galaxies merge and then multiple thousands of stars get to play
Newtonian assisted chicken with one another at roughly the same time
(worse yet if things are going retrograde), as well as massive
molecular clouds producing stellar offspring as rogue star systems
that easily become gravity dominate within their terrific tidal radii
that’s brand new to the existing stars and solar systems of that same
area (the original Sirius star system of <12.5 Ms comes to mind).

~ BG

Yousuf Khan

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Nov 19, 2009, 2:05:41 AM11/19/09
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BradGuth wrote:
> Yes, stars do blueshift right into one another, worse yet when
> galaxies merge and then multiple thousands of stars get to play
> Newtonian assisted chicken with one another at roughly the same time
> (worse yet if things are going retrograde), as well as massive
> molecular clouds producing stellar offspring as rogue star systems
> that easily become gravity dominate within their terrific tidal radii
> that�s brand new to the existing stars and solar systems of that same

> area (the original Sirius star system of <12.5 Ms comes to mind).

You do realize that stars that form from various gas clouds don't have
nearly as much mass as the original clouds they came from, right? The
original gas cloud outweighs any stars coming from them, 10:1 or more.
So a new star that forms near existing stars is not going to have any
kind of sudden gravitational effect on the existing stars, since the
original gas cloud did whatever perturbation was going to happen already.

Yousuf Khan

BradGuth

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Nov 20, 2009, 12:20:29 AM11/20/09
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On Nov 18, 11:05 pm, Yousuf Khan <bbb...@yahoo.com> wrote:
> BradGuth wrote:
> > Yes, stars do blueshift right into one another, worse yet when
> > galaxies merge and then multiple thousands of stars get to play
> > Newtonian assisted chicken with one another at roughly the same time
> > (worse yet if things are going retrograde), as well as massive
> > molecular clouds producing stellar offspring as rogue star systems
> > that easily become gravity dominate within their terrific tidal radii
> > that’s brand new to the existing stars and solar systems of that same

> > area (the original Sirius star system of <12.5 Ms comes to mind).
>
> You do realize that stars that form from various gas clouds don't have
> nearly as much mass as the original clouds they came from, right?

Correct, whereas it took a molecular cloud of 1.25e6 < 1.25e7 Ms in
order to produce the nearby Sirius star system.

>
>The original gas cloud outweighs any stars coming from them, 10:1 or
> more.

It's more like a minimum of 1000:1, and more typically <1e6:1

>
> So a new star that forms near existing stars is not going to have any
> kind of sudden gravitational effect on the existing stars, since the
> original gas cloud did whatever perturbation was going to happen already.
>
>         Yousuf Khan

How very correct. What would a 1.25e7 Ms at 10 ly distance or even
100 ly do to our solar system?

What would the 6 Ms Sirius(B) nova do to us?

~ BG

BURT

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Nov 20, 2009, 12:43:22 AM11/20/09
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There is no proof of this. This is a silly idea. Order is in the
aether.

Mitch Raemsch

BradGuth

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Nov 20, 2009, 12:48:24 AM11/20/09
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No proof that stars come from molecular clouds?

What silly alternative is there for creating stars like the nearby
Sirius system?

~ BG

BURT

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Nov 20, 2009, 12:52:24 AM11/20/09
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There are no rogue stars. This is a misinterpretation of data in
astronomy.

Mitch Raemsch

Yousuf Khan

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Nov 20, 2009, 7:49:15 PM11/20/09
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BradGuth wrote:
> What would the 6 Ms Sirius(B) nova do to us?


Sirius A is 2 solar masses, while Sirius B is slightly less than 1 solar
mass. 3 solar masses in total for the system, not 6.

Yousuf Khan

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