Quote:
Originally Posted by Hotdog
The details of the interpretation may change but there is absolutely no doubt that this is a highly unusual star, possibly unique in the Galaxy. Just looking at the spectrum (you can see it here: https://twitter.com/annafrebel/statu...71786930130945) shows that this is no ordinary M-dwarf, such spectra are usually full of absorption lines but this has hardly any. The non-detection of iron lines means that the iron abundance must be at least 30 times lower than the previously most iron poor star known and over 12 million times lower than the iron abundance in the Sun!
Granted there are uncertainties about the exact age and ancestry of this star but that's exactly what makes it so interesting. If we can nail down the details this ancient star will tell us a lot about the generation of stars that preceded it, i.e. the very first stars in the universe. |
Basicly what I was trying to say.
I still find it hard to take in that you can have a star that is between 2-3 billion years older than the galaxy, and survived Supernova and star forming going on in the Early formation of the galaxy.
That it is only 6000 light years from the Sun is even more amazing.
I know that the galaxy is not as active in Star formation as it used too be, which makes it more amazing how long it has stayed around.
I understand that the first stars were massive and had little or no metals and did not last too long, so how did this star survive
Cheers
