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 Post subject: Scholz's Star
PostPosted: Sat Mar 24, 2018 10:17 am 
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Joined: Thu Jun 02, 2016 11:32 am
Posts: 405
Location: New Farnley, Leeds lat 53.8N long 1.6W
In the news (well, slightly) this week. This dim red dwarf and brown dwarf pair, about 3 parsecs (~20 l.y.) away in Monoceros, is a relatively recent discovery among the Sun's neighbours. This is because it's very faint and more significantly, it has a very small proper motion. This is the small but easily detectable "sideways shift" of position that nearer stars exhibit against more distant stars, just like cars zipping left and right in front of you at a nearby road junction. Why doesn't it have much of a "sideways shift" if it's so close? Because it's travelling more or less directly away from us, like a car on the same side of the road - so it wasn't noticed as a near neighbour of ours. Researchers are now surmising that the pair overtook the solar system 70,000 years ago and might have been close enough to disturb the comet families of both systems. In other words there is a small chance that we might have borrowed some of Scholz's star's comets when things were stirred up by the close approach!
Mmmm... an interesting scenario but is this one of those theories looking for a sensational angle?
Bob


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 Post subject: Re: Scholz's Star
PostPosted: Sat Mar 24, 2018 10:28 am 
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Joined: Mon Jan 09, 2006 11:05 am
Posts: 5193
Location: Lancashire
Now we know which stellar system Millwall fans came from :wink: .

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brian


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 Post subject: Re: Scholz's Star
PostPosted: Sat Mar 24, 2018 10:50 am 
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Joined: Thu Jun 02, 2016 11:32 am
Posts: 405
Location: New Farnley, Leeds lat 53.8N long 1.6W
Brian, Omg, where did Leeds fans come from then?
Bob


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 Post subject: Re: Scholz's Star
PostPosted: Sun Mar 25, 2018 11:09 am 
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Joined: Fri Dec 03, 2004 2:41 pm
Posts: 1443
Location: 55° 57'N: 03° 08'W
"This dim red dwarf and brown dwarf pair, about 3 parsecs (~20 l.y.) away".

Sorry, but 20 l.y. is 6 parsecs.


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 Post subject: Re: Scholz's Star
PostPosted: Sun Mar 25, 2018 12:29 pm 
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Joined: Thu Jun 02, 2016 11:32 am
Posts: 405
Location: New Farnley, Leeds lat 53.8N long 1.6W
Division never was for me,
These numbers stellar make me cry,
Light years and parsecs pass me by,
For I mix up a six and three,
Save when you are most kind to see
And teach me how to multiply.

Kind thoughts and thanks, Bob :)


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