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Cool Brown Dwarf may be a Newfound Neighbor of the Sun

 
Anonymous Coward
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04/09/2010 01:45 PM
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Cool Brown Dwarf may be a Newfound Neighbor of the Sun
Here's a new article for you guys. They do not know how far away it is, and it has not been 'peer reviewed' yet. Its the coldest brown dwarf, colder than what they thought was possible for a brown dwarf.

[link to www.scientificamerican.com]


Cool brown dwarf may be a newfound neighbor of the sun
By John Matson


Brown dwarfs straddle the divide between planets and stars—they are celestial objects too small to burn hydrogen in fusion reactions, as stars do, but they are large enough to sustain other kinds of fusion. At least a few even harbor orbiting planets. The International Astronomical Union sets the planet–brown dwarf boundary at 13 times the mass of Jupiter. But that mass limit is an imperfect definition—what of brown dwarf–size bodies that orbit stars, behaving themselves like supersized planets?

Firming up the line between planets and brown dwarfs will become more pressing as the coolest, dimmest brown dwarfs soon reveal themselves to the new generation of astronomical instruments. NASA's WISE satellite, for instance, is highly adept at spotting cool, dim objects. Since its launch in December 2009, WISE has already discovered seven comets and 30 near-Earth asteroids, and its operators expect that WISE will spot many brown dwarfs as well during its sky-surveying mission.

In the meantime, an international team led by Philip Lucas of the University of Hertfordshire in England claims discovery of what could be the nearest and coolest brown dwarf yet. Lucas and his colleagues reported their finding in a paper posted to the preprint repository arXiv.org on April 2. They used data from a survey of the sky taken at the U.K. Infrared Telescope in Hawaii to uncover UGPS 0722-05, a brown dwarf with a temperature of only about 125 to 225 degrees Celsius. The coolest previously known brown dwarfs are in the range of 225 to 275 degrees C.

Based on preliminary distance measurements, the object appears to be floating free in interstellar space some 9.5 light-years away, closer than the binary brown dwarfs of the Epsilon Indi system 11.8 light-years distant. If it were a normal star it would rank among the dozen nearest stellar companions to the sun. (The closest star, Proxima Centauri, is 4.2 light-years from the sun.)

Astrophysicist Adam Burgasser of the University of California, San Diego, was not a member of Lucas's team but has already been involved in follow-up observations of the object. "I think it's a very interesting find," Burgasser says, "although I would caution it is still unclear how close the source is, as there are only a few astrometric measurements made thus far." He notes also that temperatures can be difficult to pin down for the coolest varieties of brown dwarfs, and that the research has not yet been peer-reviewed. "In any case, the group's discovery has gotten several of us very excited," Burgasser says, "and we do hope it pans out to be as close as they claim."
infinitymindbox
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04/09/2010 01:47 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
Ive been meaning to ask you a ...would the EMP theorized cause any disruption in the human mind? The brain works on electronic impulses....would the EMP cause those to stop?
Riker

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04/09/2010 01:50 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
Jesus Christ... look at them HOPING that it's close! Be careful what you wish for! LOL
You shall know the TRUTH, and the TRUTH shall set you free.
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Anonymous Coward
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04/09/2010 01:52 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
No mention yet of that object that keeps showing up on SOHO cameras or why the magnetosphere becomes twisted like a pretzel.

NASA needs to come clean.
Thermal Expansion

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04/09/2010 01:53 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
Right on Sickscent, keep em coming.
Anonymous Coward (OP)
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04/09/2010 01:53 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
Ive been meaning to ask you a ...would the EMP theorized cause any disruption in the human mind? The brain works on electronic impulses....would the EMP cause those to stop?
 Quoting: infinitymindbox 938665


It was massive enough, I would think it would. Our brain communicates through electro-magnetic pulses (as well as other mechanics, obviously).

In some of my other posts I note some science describing electro-magnetic pulses and magnetic fields to the brain, and subjects experience 'spiritual' and transcendant like phenoms.
Riker

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04/09/2010 01:54 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
No mention yet of that object that keeps showing up on SOHO cameras or why the magnetosphere becomes twisted like a pretzel.

NASA needs to come clean.
 Quoting: Anonymous Coward 7315


???
You shall know the TRUTH, and the TRUTH shall set you free.
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rikerglp (at) gmail.com
*********************************
Anonymous Coward (OP)
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04/09/2010 01:54 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
PIN! Thanks mods. You rock...
Anonymous Coward
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04/09/2010 01:55 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
NEMESIS?
Anonymous Coward (OP)
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04/09/2010 01:56 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
NEMESIS?
 Quoting: Anonymous Coward 938724

ohyeah


Just kidding... 1dunno1
Anonymous Coward
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04/09/2010 01:57 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
Once again....nice work SS...glad to see you finally got a pin...look forward to more of your posts..
Anonymous Coward
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04/09/2010 01:58 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
I can't imagine why they want it to be close. This is probably going to bring some huge changes with the sun, if it comes around.
Anonymous Coward
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04/09/2010 01:59 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
All living things run on a DC current. This is why you are seeing mass beachings, die-offs, etc. It's the varying magnetics that are affecting things.

The "natural" world is feeling it first.
infinitymindbox
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04/09/2010 02:01 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
With the coming EMP, the brain synapsis would stop firing, leading to death? Or would the brain kick start the areas normally dormant...relying on alternate forms of data processing such as photon energy. The brain is just as complicated as the universe...areas there we do not understand. I am thinking what is coming is the next evalutionary leap. What I want to know is , how should we prepare for it?
Anonymous Coward (OP)
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04/09/2010 02:02 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
All living things run on a DC current. This is why you are seeing mass beachings, die-offs, etc. It's the varying magnetics that are affecting things.

The "natural" world is feeling it first.
 Quoting: Anonymous Coward 840078


+1

Like Xenus always references to: PLASMA
Anonymous Coward
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04/09/2010 02:05 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
That sounds really close!!! If they are saying 9.5, what could it really be?
Anonymous Coward
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04/09/2010 02:06 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
Jesus Christ... look at them HOPING that it's close! Be careful what you wish for! LOL
 Quoting: Riker


9.5 light years is a shitty definition of close.
Anonymous Coward
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04/09/2010 02:07 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
S.S. awesome info as usual
Anonymous Coward (OP)
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04/09/2010 02:07 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
That sounds really close!!! If they are saying 9.5, what could it really be?
 Quoting: Anonymous Coward 935930


That's what I thought. 9.5 lightyears does sound close... If it was that far out there, it would still take forever to get here. But, I bet its not... muahahaha!
Anonymous Coward (OP)
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04/09/2010 02:07 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
S.S. awesome info as usual
 Quoting: Anonymous Coward 936911


Thanks man
Anonymous Coward
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04/09/2010 02:08 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
I can't imagine why they want it to be close. This is probably going to bring some huge changes with the sun, if it comes around.
 Quoting: Anonymous Coward 902591


it's over twice as far away as Proxima Centauri

even if it was heading straight for us, at 20000 mph say, it would still take 318000 years to get here

i think the uncertainty is whether it IS that close, or maybe a bit further away. they need more observations.

it's the stuff they're not telling us about I'm more concerned about.
Anonymous Coward
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04/09/2010 02:08 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
9.5 light years is the distance light travels in 9.5 years.

So, that is far, at least in terms of solar system distance. It takes only 8-9 minutes from the light of the Sun to reach Earth, so how far do you think it goes in a full year?
Anonymous Coward
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04/09/2010 02:09 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
Ive been meaning to ask you a ...would the EMP theorized cause any disruption in the human mind? The brain works on electronic impulses....would the EMP cause those to stop?


It was massive enough, I would think it would. Our brain communicates through electro-magnetic pulses (as well as other mechanics, obviously).

In some of my other posts I note some science describing electro-magnetic pulses and magnetic fields to the brain, and subjects experience 'spiritual' and transcendant like phenoms.
 Quoting: Sickscent


It would depend on the frequency or Hertz. Alpha, beta, etc.
<FOCUS>
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04/09/2010 02:17 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
Every day it's a new story on the Brown dwarf.

Only a matter of time.

This is how they do it
Anonymous Coward (OP)
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04/09/2010 02:22 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
This is a somewhat lengthy article, but it explains exactly what a brwon dwarf is. This is what the NEMESIS theory is all about, a brown dwarf.

Here is a great comment from the article below:
"Brown dwarfs are so elusive, so hard to find," McLean said. "They can be detected best in the infrared, and even within the infrared, they are very difficult to detect.


Brown Dwarf Detectives Elusive brown dwarfs, the missing link between gas giant planets like Jupiter and small, low-mass stars, have now been "fingerprinted" by UCLA astronomy professor Ian S. McLean and colleagues, using the Keck II Telescope at the W.M. Keck Observatory in Hawaii.

Brown dwarfs, such as Gliese 229B, lack sufficient mass (at least 75-80 Jupiters) to ignite core hydrogen fusion.
*snip*

McLean and his research team will publish the most systematic and comprehensive near-infrared spectral analysis of more than 50 brown dwarfs in the Oct. 10 issue of the Astrophysical Journal, the premier journal in astronomy, published by the American Astronomical Society.

"The infrared spectra of brown dwarfs reveal their atomic and molecular fingerprints," said McLean. "Each class of brown dwarfs has a unique fingerprint. We have taken the spectra of more than 50 of them, which reveal their physical and chemical properties."

Brown dwarfs are failed stars about the size of Jupiter, with a much larger mass but not quite large enough to become stars. Like the sun and Jupiter, they are composed mainly of hydrogen gas, perhaps with swirling cloud belts. Unlike the sun, they have no internal energy source and emit almost no visible light. Brown dwarfs are formed along with stars by the contraction of gases and dust in the interstellar medium, McLean said. The first brown dwarf was not discovered until 1995, yet McLean suspects the galaxy is teeming with them.

"Brown dwarfs are so elusive, so hard to find," McLean said. "They can be detected best in the infrared, and even within the infrared, they are very difficult to detect. We detect the heat glow from these faint objects in the infrared. Typically, they have to be relatively close by, within 100 light years, for us to even detect the heat signature."

McLean and his colleagues do so using a sophisticated instrument that McLean designed and built at UCLA with other astronomers from UCLA and the University of California, Berkeley. The instrument, attached to the W.M. Keck Observatory's 10-meter Keck II Telescope atop Mauna Kea in Hawaii -- the world's largest optical and infrared telescope -- is called NIRSPEC. It is six feet high, weighs one ton and contains the most powerful infrared spectrometer in the world.

"This is the first time a large quantity of high quality spectral data are presented systematically in the infrared, where brown dwarfs emit most of their light," said Davy Kirkpatrick, staff scientist at the California Institute of Technology's NASA-funded Infrared Processing and Analysis Center. "Approximately 2 percent of brown dwarfs near the sun are oddballs, and we are starting to be able to identify them and understand what makes them different. In addition, many brown dwarfs have been reported in different ways, and we now present them in a consistent manner that will become a standard reference for the future."

McLean built the world's first infrared camera for wide use by astronomers in 1986, and he has built six increasingly sophisticated infrared cameras and spectrometers since then. (A spectrometer splits light into its component colors.)

" The quality of infrared spectra has improved drastically over the last decade," he said.

The detectors in McLean's spectrometers, such as NIRSPEC, have more than 250 times as many picture elements as in the 1980s.

"The spectrum reveals what's present and what's missing," McLean said. "What's missing in the light tells us something in the atmosphere of the brown dwarf has absorbed the light.

"When we first studied the brown dwarf spectra, they were peculiar like no star we had ever seen before. The reason we saw missing light in the spectra of the coolest brown dwarfs is the presence of methane in the atmosphere, which we also see in the outer gas giants of the solar system: Jupiter, Saturn, Uranus, Neptune.

"We also see evidence of water in the form of superheated steam, which we don't see in any normal star like the sun. The sun is much too hot to have water molecules. Methane and water sculpt the infrared spectrum in a very distinctive way. The spectra of brown dwarfs show a gradual change from that of a star to that of Jupiter.

"Brown dwarfs are the missing link between gas giant planets like Jupiter and small stars like red dwarfs," he said.

If large numbers of brown dwarfs exist, they "could make a small, but significant contribution to dark matter," the so-called "missing mass" in the universe, McLean said.


The brown dwarf LP 944-20 (Digital Sky Survey).
Credit: European Southern Observatory

"Brown dwarfs won't account for all of the so-called dark matter," he said. "There is mass in the form of ordinary matter that is unaccounted for because we don't yet have the technology to find it. There are brown dwarfs, and maybe small black holes, and faint white dwarfs regular stars that lost their outer gaseous envelopes leaving the burned-out core of old stars. White dwarfs, brown dwarfs, black holes and gas account for some of the dark matter. The rest is presumably a new form of matter."

"After four years of data gathering from NIRSPEC, we have obtained and studied spectra from more than 50 brown dwarfs, and analyzed the variations," McLean said. "Astronomers in the future will be able to obtain the infrared spectrum of a newly discovered brown dwarf and compare the spectrum with those we have published and instantly identify what kind of brown dwarf they have found. Probing more distant regions of the galaxy to study the youngest, recently-formed brown dwarfs is the next step."

The true abundance of brown dwarfs, sub-brown dwarfs and extrasolar planets is not known, and large areas of the sky still need to be explored. Most of the brown dwarfs have been located by the Two Micron All Sky Survey (2MASS), although the Sloan Digital Sky Survey (SDSS) and the planet-finding Doppler technique also have been used to find brown dwarfs. Reid is completing a census of low-mass stars and brown dwarfs in the immediate solar neighborhood.

From Astrobiology Magazine
Based on a UCLA report
Anonymous Coward
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04/09/2010 02:28 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
I dont think it is about how far it is. First, they said it was some thousands l y from us. Now it is 9,5..
Just, going back to the boeing guy, HOW can this affect our sun, our vecinity?
I dont know..who knows?

But i can ask my self; are we seing any unusual shit in our solar system? Are we reaaly experiencing more than average EQ and Vulcano action?
Are we getting close to several ansient civilisations predicted time of "something"?

Is all this just coincidents?

I just feel there are too many dots to connect!

Thanks OP you are doing a great job!
Make us use our brain!
Anonymous Coward
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04/09/2010 02:31 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
By the way; i am your nr 1 "follow" on your blog..did i win a ...shit cant find any "thing" i want. Maybe that we ALL get on that train and nobody is left behind in this (/#%¤/#&¤/(# life!
Anonymous Coward
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04/09/2010 02:33 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
"Brown dwarfs are so elusive, so hard to find," McLean said. "They can be detected best in the infrared, and even within the infrared, they are very difficult to detect.''

now there's a statement preparing the sheep for the worse, if ever i saw one!
infinitymindbox
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04/09/2010 02:34 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
[link to news.yahoo.com]
my hypothesis is that everything here in our solar system has an equal or opposite manifestation somewhere on another plane. I also think that at certain points in the river of time, these planes do allign.
Anonymous Coward (OP)
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04/09/2010 02:38 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
By the way; i am your nr 1 "follow" on your blog..did i win a ...shit cant find any "thing" i want. Maybe that we ALL get on that train and nobody is left behind in this (/#%¤/#&¤/(# life!
 Quoting: Anonymous Coward 937965


LOL, you get a free compass that you can use in case SHTF!

Oh, wait. I should've thought about that prize a little longer... tomato
Anonymous Coward
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04/09/2010 02:39 PM
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Re: Cool Brown Dwarf may be a Newfound Neighbor of the Sun
By the way; i am your nr 1 "follow" on your blog..did i win a ...shit cant find any "thing" i want. Maybe that we ALL get on that train and nobody is left behind in this (/#%¤/#&¤/(# life!


LOL, you get a free compass that you can use in case SHTF!

Oh, wait. I should've thought about that prize a little longer... tomato
 Quoting: Sickscent


yep

you could always supply it with extra NSEW stickers though, so it can be modified post event.

chuckle
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