Dark Lord Potter Forums
Go Back   Dark Lord Potter Forums > Common Room > Real Life Discussion
Donate Register Rules Library List IRC Chat FAQ Members List Social Groups Calendar Search Today's Posts Mark Forums Read


Donate to DLP Scryer Banner

Thread Tools Display Modes
Old 07-09-2012, 02:19 PM   #1
Half-Blood Prince
Celestin's Avatar
Join Date: Aug 2008
Location: Poland
Gender: Male
Posts: 3,576
The Universe did a magic trick

And made a dust from the TYC 8241 2652 system disappear.

That surprise you feel when your favorite store turns off its lights, locks up its doors, and suddenly, for no apparent reason, goes out of business? That's just how astronomers felt recently when a dusty disk of rocky debris around a nearby star abruptly shut down and by all appearances went out of business.

The star -- designated TYC 8241 2652 and a young analog of our Sun -- only a few years ago displayed all of the characteristics of hosting a solar system in the making. Now, it has transformed completely: very little of the warm dusty material thought to originate from collisions of rocky planets is apparent - it's a mystery that has astronomers baffled.

Carl Melis of the University of California, San Diego, led the discovery team, whose report is published in the July 5th issue of the journal Nature. He said, "It's like the classic magician's trick: now you see it, now you don't. Only in this case we're talking about enough dust to fill an inner solar system and it really is gone!"

Co-author Ben Zuckerman of the University of California Los Angeles, observed, "It's as if you took a conventional picture of the planet Saturn today and then came back two years later and found that its rings had disappeared."

The dusty disk at TYC 8241 2652 was first seen by the NASA Infrared Astronomical Satellite (IRAS) in 1983, and remained brightly glowing for 25 years. Like Earth, warm dust absorbs the energy of visible starlight (sunlight) and reradiates that heat energy as infrared radiation. An infrared image obtained at the Gemini telescope in Chile on May 1, 2012 - just as the paper was being accepted by Nature - confirmed that the warm dust has now been gone for 2.5 years.

"A perplexing thing about this discovery is that we don't have a really satisfactory explanation to address what happened around this star. The disappearing act appears to be independent of the star itself, as there is no evidence to suggest that the star zapped the dust with some sort of mega-flare or any other violent event," said Melis.

Zuckerman, who has been investigating circumstellar disks (debris disks around stars) since the 1980s, noted that "the dust disappearance at TYC 8241 2652 was so bizarre and so quick, initially I figured that our observations must simply be in error in some strange way."

Norm Murray, Director of the Canadian Institute for Theoretical Astrophysics, who was not part of the research group, said, "The history of astronomy has shown that events that are not predicted and hard to explain can be game-changers".

The lack of an existing model for what is going on around this star is forcing astronomers to rethink what happens within young solar systems in the making.

"Although we've identified a couple of mechanisms that are potentially viable, none are really compelling," said Melis. "In one case, gas produced in the impact that released the dust helps to quickly drag the dust particles into the star and thus to their doom. In another possibility, collisions of large rocks left over from an original major impact provide a fresh infusion of dust particles into the disk which then instigate a runaway process where small grains chip into oblivion both themselves and also larger grains."

Major dusty regions such as the asteroid belt and another located out beyond the orbit of Neptune are known to exist in our own solar system. Nearly 30 years ago, NASA's Infrared Astronomical Satellite (IRAS) first discovered similar regions orbiting other stars. Now hundreds of stars similar to our Sun are known to emit an excess of infrared radiation that is usually attributed to dusty materials orbiting the star in what are called debris disks. It is believed that this material results from planetary system formation and is due to collisions and reprocessing of objects like the comets and asteroids that are part of our own solar system. But nothing like the disappearing dust disk at TYC 8241 2652 had ever been seen during these three decades.

The result is based upon multiple sets of observations of TYC 8241 2652 obtained with the Thermal-Region Camera Spectrograph (T-ReCS) on the Gemini South telescope in Chile, the IRAS satellite, the Wide-field Infrared Survey Explorer (WISE) satellite, NASA's Infrared Telescope on Mauna Kea in Hawai`i, the Herschel Space Telescope of the European Space Agency, and AKARI (a Japanese/ESA infrared satellite).

TYC 8241 2652 lies in the direction of the constellation of Centaurus. Observations by Australian co-authors Simon Murphy and Michael Bessell with the Australian National University's 2.3-meter telescope established that the star is roughly 10 million years old and 450 light years distant.

Support for this work was provided by the Lawrence Livermore National Labs, the US National Science Foundation, and NASA.

I will be the first to say this - aliens.
Celestin is offline   Reply With Quote
Old 07-09-2012, 02:22 PM   #2
Order Member
Angle of Mispeling
Aekiel's Avatar
Join Date: Mar 2006
Location: The Mouth of Ports
Age: 29
Gender: Male
Posts: 821
DLP Supporter Donor Star
High Score: 9,373
Totally aliens.
Originally Posted by Custer
We're holding out for more SasuNaru goodness.
Because you can't, you won't and you don't stop ~ The Beastie Muppets
Steam Profile
Aekiel is offline   Reply With Quote
Old 07-09-2012, 02:33 PM   #3
The Chosen One
knight504's Avatar
Join Date: Nov 2010
Location: England
Gender: Male
Posts: 2,089
Those darn aliens.
The Narutoversity
Theories and worldbuilding for the Narutoverse
knight504 is offline   Reply With Quote
Old 07-09-2012, 02:34 PM   #4
Infidel's Avatar
Join Date: Feb 2011
Location: The underverse
Age: 30
Gender: Male
Posts: 608
Yeah. Aliens, probably mining for minerals.
Originally posted by nuhuh in Demon's Feign, Merlin's Pain

"I saw reality. I saw everything, haha, everything! It was nothing. There isn't a great beyond waiting for us after we die. It's all strange and it doesn't care.
Infidel is offline   Reply With Quote
Old 07-09-2012, 02:58 PM   #5
Random Shinobi
Random Shinobi's Avatar
Join Date: Aug 2006
Gender: Male
Posts: 715
DLP Supporter Donor Star
They must have build a ringworld.
Random Shinobi is offline   Reply With Quote
Thumbs Up 3 thumbs up
Old 07-09-2012, 07:25 PM   #6
1/3 of the Note Bros.
Join Date: Apr 2009
Location: Melbourne, Florida, United States
Age: 28
Gender: Male
Posts: 1,347
DLP Supporter Donor Star
That is odd. There are very few astronomical events that take place on a timescale as minuscule as two-and-a-half years. Plus, that's a pretty big amount of dust to clear out, so the process must have been damn efficient.

Solar mass stars are pretty volatile when they're that young, though, but I don't see how that could clear out a dust disk so quickly. Poynting–Robertson drag - which causes dust particles to spiral into their parent star - is possible, but again, the timescale is too short (in our own Solar System, it usually takes on the order of a thousand years for it to clear out dust from an Earth-like orbit).

This is very interesting...
mknote is offline   Reply With Quote
Old 07-09-2012, 08:18 PM   #7
Order Member
Troll in the Dungeon
Join Date: Apr 2011
Location: The middle of fucking nowhere.
Age: 28
Gender: Male
Posts: 832
High Score: 2,002
It was Voldemort.

Space Voldemort.
KHAAAAAAAAAAN!! is offline   Reply With Quote
Old 07-09-2012, 08:29 PM   #8
Fourth Year
hgf's Avatar
Join Date: Mar 2009
Gender: Male
Posts: 133
It's the doing of an invisible Space Whale. It eats the dusty thingys as if they were plankton and burps magic stardust and souls.
hgf is offline   Reply With Quote
Thumbs Up 1 Thumb Up
Old 07-09-2012, 08:35 PM   #9
Chief Warlock
wordhammer's Avatar
Join Date: Feb 2010
Location: In the wood room, somewhere flat
Gender: Male
Posts: 1,569
DLP Supporter Donor Star
Anyone happen to notice a new Tuffle planet floating nearby?
Join the DLP C2. It only hurts if you flinch.
wordhammer is offline   Reply With Quote
Old 07-10-2012, 09:30 AM   #10
CareOtters's Avatar
Join Date: Jun 2010
Age: 25
Gender: Male
Posts: 1,041
DLP Supporter Donor Star
North Korea's latest missile launch went even further off target.
CareOtters is offline   Reply With Quote
Old 07-10-2012, 09:41 AM   #11
Jormungandr's Avatar
Join Date: Jul 2010
Location: Merry ol' England
Age: 28
Gender: Male
Posts: 2,961
Fucking alien pikeys and their asteroid-stealing ways.
Originally Posted by Sun Tzu, the Art of War
“If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.”
Jormungandr is offline   Reply With Quote
Old 07-10-2012, 05:33 PM   #12
Top 1 Percent
Luckylee's Avatar
Join Date: Jan 2011
Location: Same.
Gender: Male
Posts: 103
High Score: 1,828
Originally Posted by CareOtters View Post
North Korea's latest missile launch went even further off target.
I would prefer a misfired alien laser
Luckylee is offline   Reply With Quote

aliens, instrument error

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cool Evolution Trick: Platinum Turns Baby Snails into Slugs Midknight Real Life Discussion 4 10-14-2010 10:39 PM
Neighbors shocked after SC trick-or-treater shot Zombie Real Life Discussion 18 11-03-2008 10:06 PM
KChallenge#1 One Trick Pony Kerrus Challenges 33 07-10-2008 08:04 AM
Can Hagrid Copy Voldemort's Flying Trick? Nefar General Discussion 17 10-15-2007 12:57 PM

All times are GMT -4. The time now is 08:04 AM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright ©2005 - 2016 DLP Group. All rights reserved.
No personal intellectual property on this site may be used without the credit and express permission of the respective authors.