Astronomers Find Unusual Star
First time accepted submitter JoshuaZ writes "Astronomers have found an unusual small star. SDSS J102915+172927 is a small faint star with very little of any elements other than hydrogen or helium. The star's composition is surprising (Pdf) since standard theories of star formation require heavier elements in small stars in order to allow the stars to be heavy enough to come together. Possibly the most unusual aspect of this star is the complete non-detection of lithium which would be expected in a star of this size. The only elements created shortly after the Big Bang were lithium, hydrogen and helium, and the star should have lithium levels much higher since they should correspond closely with the levels believed to have been formed shortly after the Big Bang."
That is unusual.
I always like to know how far away something is from us. Most articles on the web give direction toward Leo, but for distance I only found one reference that said it was hovering 3,500 light-years above the disk of the Milky Way. So it's near our Milky Way
http://www.cosmosmagazine.com/news/4690/impossible-star-discovered
In a sense this is a good thing. It shows that when you really get down to it, we still really understand very little about the universe and how things are formed/created. A little humility never hurt.
...we could easily confuse an exhaust with a star...
...some aliens had a party nearby and some of balloons got away?
Jupiter is also like 99.7% hydrogen and helium, but I guess they're assuming that the Sun gobbled up most of the heavier elements when our solar system was forming.
If it weren't for the arrow I would of been confused on the location.
Maybe it had those elements inside it at one point, but then decided after ingesting them that they were making it too fat and vomited it out.
They took all the lithium for their laptop batteries.
rewriting history since 2109
The star's composition is surprising since standard theories of star formation require heavier elements in small stars in order to allow the stars to be heavy enough to come together.
God made it that way to test your faith.
Its not a star..its a power source created by an advanced alien specials that they use to fuel their light speed engines...silly scientists missing that :-P
A star had some of its plasma ripped off by a black hole (or another star) moving by. For whatever reason, the heavier elements were captured by the 2 larger bodies and the leftover H and He slowly coalesced into the freaky star.
Scenario 2- The freaky star formed at the Lagrangian point between 2 huge stars and was dislodged from the system by a passing star.
In the distance you hear an ominous moo.
Makes sense, they would need a large supply of lithium to treat their mental disorder.
Or possibly strip-mined for the Lithium?
I bet he could explain it.
I don't really believe that's the case, but a scientist (cannot find links) once proposed a method for looking for ET life by looking at strange-behavior stars, that could be the result of a massive planetary system colonization, like for example enclosing a star with a "shell" to generate energy and so altering the spectrum we would say.
You know. you're a bit less than a real star. You may think you're a star but you're not.
That's no star -- it's an extragalactic surfboard flare!
(Ok, that wasn't very witty. Superior replies encouraged.)
On a more serious note: given that the Milky Way's diameter is ~100,000 light years, this thing being only "3,500 light-years above the disc of the Milky Way" would make it a straggling member of our galaxy, would it not?
That that is is that that that that is not is not.
They found a new star and they didn't even make a wish?! Sheesh! Whimsy is dead...
It is probably safer to say that they did not detect lithium in the star's atmosphere.
The light that we see from a star tends to fit a blackbody curve, which says a lot about the temperature of a star but nothing about the composition. However, the stellar atmosphere will contain absorption or emission lines that tell us about the composition of the atmosphere. It doesn't say anything about the interior of the star.
Now my recollections of stellar models is quite hazy, but I do recall that different processes happen within the star. Some stars have convective regions, which means that there is a mixing of the material inside the star. There are also radiative regions, where there is no mixing of the materials so the star ends up stratified.
The statification doesn't really tell us why there is no lithium in the atmosphere, since that should have been around since the big bang. Now this doesn't really tell us why there is no Lithium in the atmosphere, but if does suggest that there are cases where it would not be replenished even if the star it was orbiting had a surplus of resources.
It probably is a Dyson sphere ;)
I wish!!!!
It's considerably more likely that our theory(/ies) of star formation are lacking.
I've fallen off your lawn, and I can't get up.
What if it was a small black hole left over from the early days of the Universe? The point is the heavier elements would have either been blown off and absorbed by neighboring systems or drawn back in billions of years ago. If the area was rich in Helium and Hydrogen then what they are seeing is actually the event horizon of a black hole that happens to be feeding on what is at hand.
1. The star doesn't belong to this multiverse.
2. A few (astro)physical laws need an overhaul
3. The observations are wrong
4. All the three above.
Sent as ripples into the electromagnetic field. No single photon has been harmed in the process.
Maybe it consumed the lithium because it was depressed?
some creationist is gonna say "big bang theory discredited"
Scientists crack me up, they don't know everything. That's the difference between science and faith..
"The only elements created shortly after the Big Bang were lithium, hydrogen and helium".
Wow. I can't believe people actually say this stuff. And from the looks of it, they believe it.
The brains of a chicken, coupled with the claws of two eagles, may well hatch the eggs of our destruction.
Actually, some of us are pretty easy about it. Although the Christian God is contradictory enough to be impossible to fully demonstrate, I for one would settle for a much less powerful being as God. Or as a god.
And it's not just me. For 99% of the existence of the human species, we lived just fine with much less omnipotent gods. Even the Jewish God of the OT, actually promised a lot less. Heck, until very late, he didn't even promise an afterlife at all. (In fact, Genesis even spells it out that God _didn't_ want humans to have eternal life.) Other civilizations were perfectly OK with Gods of limited powers, or not immortal (see the Norse Gods), or even already dead (see Osiris.)
I mean, take the traditional supposed powers of a Pharaoh, as an incarnate of Horus. He was supposed to bring fertility and prosperity by just being there, bring Ma'at (justice, orders, etc) to the land, etc. And of course, be the representative of some guys who can give an afterlife.
Let's say some dude came forward and claimed that he is the new incarnate of Horus. How would we go about testing it? Well, for example, let's see if he can influence the fertility of some plots of land, in a double-blind experiment. He gets 100 randomly selected farms he has to boost the production of, 100 he must lower the production of, and 100 more are chosen as control. Repeat that for 2-3 years.
Nobody else knows which farms, until it's time to compare results.
Ma'at? Same deal. Get a list of 100 random cities where the criminality must drop faster than the nation average. Can he pull that stunt?
If he wants to go for even more god points, let's see, Rameses II at Kadesh claimed to have been at some point deserted by all his soldiers and that he personally, with his divine dad Ra as help, repelled the assault of the Hittite chariots at the crucial point of that battle. So it seems to me like there is precedent that the incarnate Horus could use his superhuman powers in battle. Well, we can test that too. We set the guy against a few remote controlled drones or vehicles with belt-fed beanbag ammo, and he must destroy some of them without getting beaned.
If someone can do that, personally I'll cheerfully proclaim him a god. Maybe not THE God, and I may have my doubts about whether it's actually supernatural (as opposed to, you know, it being natural that someone is a god like that;)) but I'll cheerfully grant that guy a minor god status. I might even volunteer to pull rocks for his pyramid, because, hey, it can't hurt to get on a god's good side.
A polar bear is a cartesian bear after a coordinate transform.
There's no fraud, only incompetence.
That's no star...
It's a death star.
We need the fifth element...
"Astronomers Find Unusual Star"
That's not surprising, I mean with all the reality shows we have these days...
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If so, then it could be the exhaust plume of a Bussard Ramjet.
Oops! Sorry! Wrong reality...
Wow, what is so unusual, you think you know what a star is made up of, especially when you can just take a sample and test it right there and then,
not we have been hypothesizing at all here....
If we really knew what a star was made up of, then I would agree, however, the fact is we still have yet to be able to take real samples, and even so,
we should not think that all stars are the same, or even that we have come across all possible star types.....
Just another day in space continuum for me....
To Mine a Star:
1. Land your converted 2002 Toyota Landcruiser on the stellar surface.
2. Turn on your boom box and crank out some AC/DC (e.g., Back In Black).
3. Get a shovel and start digging up the stellar surface.
4. As soon as you hit Lithium, put it in a bucket.
5. When you're done, fill in the hole so you don't leave a damaged environment.
6. Bring your bucket to the assayer and get your money.
7. Go to the saloon and watch the burlesque show.
The article makes it seem that start formation requires the presence of heavier elements (besides lithium) for a star to form, but aren't heavier elements (besides lithium) only formed within stars?
But... the future refused to change.
"Thats not a star, but a starship" Giorgio A Tsoukalos
Meh, how much worse can the Goa'uld be than the existing politicians we got? :p
A polar bear is a cartesian bear after a coordinate transform.
In the nuclear model for stellar lifecycle, only large stars can form without heavier elements like this star. It does not allow small stars to form (and be an active/bright/visible star) without an abundance of heavier elements.
In the Electric model for stellar lifecycle, stars such as this an be visible in an area with higher-than-usual charge differential. Smaller lighter stars have a lower escape velocity, so there is a smaller difference between the escape rates of electrons and protons, so there is a corespondingly lower positive charge on the star as a whole. This means they are less likely to cause enough electric current to be bright/visible. This small star is visible, so according to the Electric Sun theory, the ambient galactic environment around that star must have a stronger negative charge than usual.
Just another piece of evidence that the Big Bang and Nuclear Star theories fail to account for real-word observations, and should be considered falsified.
--Jaborandy
The star's composition is surprising (Pdf)
Damn, I never knew you could make a star out of PDFs. Clever.
Look at the planets in our own solar system. The gas giants and actually good models for stars forming in a collapsing solar nebula. We have Jupiter rich in all kinds of elements, with each planet becoming less enriched as you move out to Neptune which is almost entirely helium and hydrogen. There are all kinds of effects that may be part of close interaction with other large planets, The relative position of the planet and its development in the young stellar nebula that determined what elements would be abundant and which would be rare. Not the relative abundance of heavier elements as you get closer to the sun. Imagine also the impact of the young sun first turning on and pushing its birth nebula away and all that hydrogen and helium freezing out there in the Oort Cloud.
Stars most often form in large nebulae in clusters, that is they form alone. Imagine a super massive star like Eta Carina forming, a star more than 100 time larger than our sun, blasting its nebula away and concentrating vast amounts of hydrogen and helium separated from heavier elements. Imaging other new young stars in a large nebula interacting gravitationally with dwarf stars and gas giants, possibly robbing them of heavy elements or at least concentrating heavier elements away from where the star formed. Star formation is a complicated process and we are just now getting some clue as to how complicated planet formation is, we still don't have the foggiest idea of what can happen to a star in its developing phases.
This star is certainly rare, however I would dare guess that anything that can happen to a star in a universe with hundreds of billions of stars in a galaxy, and hundred of billions or even trillions of galaxies in the universe has or will happen, and that we haven't even scratched the surface of what is weird or rare. The universe is a busy place, and we've only had eyes to see it for a paltry few decades.
It's not too hard to consider mining a star here are some examples:
1) Wait until the star is bar hopping, and steal the bling from their jewelry box.
2) Remove the heavy elements from the outside of the stars Bentley.
3) When the star enters rehab, file a leon on the heavy elements, then pay to have them delivered to you.
4) After the big bang, when the star is asleep, take a few heavy elements.
Ross Youngblood
Obviously the heavier elements hitched a ride on a wormhole that passed through the star. Pesky stargate travelers.
isn't this what might be expected after the star has been subjected to a very strong neutron source? All of the atoms decay into essentially protons and neutrons, and hydrogen forms, producing helium? Just a guess.