Astronomy / Space So the true is that we live into a binary stars system ?

Sterlino

Sterlino
according to this page of wikipedia:

http://en.wikipedia.org/wiki/Nemesis_(hypothetical_star)

It seems that the theory to explain the Claimed periodicity of mass extinctions
becomes satisfied with presence of a brown dwarf star.
And according of what i found wrote in there:
over the 84% of the stars systems are binary !!
(but i read this only in the italian version, don't know why in the english version is not mentioned..)

In that 84% is not counted the presence of a brown dwarf star ...
so the possibilities are higher that 84% ?

SO it means that really we live into a binary system and we didn't know it ?
 

Yaffle

Volunteer Moderator
Yaffle
Sterlino said:
according to this page of wikipedia:

http://en.wikipedia.org/wiki/Nemesis_(hypothetical_star)

It seems that the theory to explain the Claimed periodicity of mass extinctions
becomes satisfied with presence of a brown dwarf star.
And according of what i found wrote in there:
over the 84% of the stars systems are binary !!
(but i read this only in the italian version, don't know why in the english version is not mentioned..)

In that 84% is not counted the presence of a brown dwarf star ...
so the possibilities are higher that 84% ?

SO it means that really we live into a binary system and we didn't know it ?
Click to expand...

I think the key here is the use of the word "hypothesis" rather than "theory".

Given that we've found a brown dwarf at about 7LY away spotting one at 1.5-2.0LY should be relatively easy!

http://forums.frontier.co.uk/showthread.php?t=15446
 

Sterlino

Sterlino
so i began to think to the possibilities...



possibility 1: the dwarf star is into an ''eccentric'' orbit around our star, coming near to 0.5 years light to us touching the Oort Cloud and flinging comets to our sun inner orbits.
 
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Memnoch

M
As Yaffle said, if this object does indeed exist and would be much closer than any of our stellar neighbours, how likely is it that it could exist and we have not spotted it yet?
 

Sterlino

Sterlino
Memnoch said:
As Yaffle said, if this object does indeed exist and would be much closer than any of our stellar neighbours, how likely is it that it could exist and we have not spotted it yet?
Click to expand...

there are various reasons to explain that:

1 - it doesn't emit relevant radiations,
2 - it's dark (so you cannot observ it directly)
3 - it's very small in size compared to a normal star
4 - (may be other important reasons that actually i don't know yet).

Bytheway this is my second possibility:



the difference of mass between our sun and the brown dwarf brings to a pendulum effect in a long long time.
So the brown dwarf sometimes ''hits'' the Oort cloud.



ok i am pretty ignorant, and these are only speculations.. but i like to play on it and compared to what happens in space.. thinking that the human imagination is 'often surpassed by the reality of the universe... may be i am not so far away from the truth
 
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Iskariot

Iskariot
Sterlino said:
there are various reasons to explain that:

1 - it doesn't emit relevant radiations,
2 - it's dark (so you cannot observ it directly)
3 - it's very small in size compared to a normal star
4 - (may be other important reasons that actually i don't know yet).

Bytheway this is my second possibility:



the difference of mass between our sun and the brown dwarf brings to a pendulum effect in a long long time.
So the brown dwarf sometimes ''hits'' the Oort cloud.



ok i am pretty ignorant, and these are only speculations.. but i like to play on it and compared to what happens in space.. thinking that the human imagination is 'often surpassed by the reality of the universe... may be i am not so far away from the truth
Click to expand...


I love the idea.
Would be the discovery of the century.
 

kenwshmt

kenwshmt
Some of the ice ball's beyond Pluto have orbits that are inconsistent enough for theories that something the size of Neptune is out there, but not something as substantial as Jupiter, and certainly not a brown dwarf.
 

Darren Grey

Darren Grey
Sterlino said:
there are various reasons to explain that:

1 - it doesn't emit relevant radiations,
2 - it's dark (so you cannot observ it directly)
3 - it's very small in size compared to a normal star
Click to expand...

The important thing in this instance is that it would have gravity, which isn't dark and can't be masked. We inferred the existence of Neptune from its gravitational effects on Uranus over 150 years ago. If there was something bigger out there then we would have noticed by now.
 
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