Milky Way's Halo Rife With Ancient Stars Torn from Other Galaxies
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November 24, 2012

Milky Way's Halo Rife With Ancient Stars Torn from Other Galaxies

 

            Halo-580x472


The Milky Way's ancient stars once belonged to other galaxies instead of being the earliest stars born inside the galaxy when it began to form about 10 billion years ago. Many of the Milky Way's ancient stars are remnants of other smaller galaxies ripped asunder by violent galactic collisions around five billion years ago, according to research that was part of the Aquarius Project, which uses the largest supercomputer simulations to study the formation of galaxies like the Milky Way.

Computer simulations revealed that the ancient stars, found in a stellar halo of debris surrounding the Milky Way, had been torn from smaller galaxies by the gravity generated by colliding galaxies.

Cosmologists predict that the early Universe was full of small galaxies which led short and violent lives, colliding with each other, leaving behind debris which eventually settled into more familiar looking galaxies like the Milky Way. The stellar halo preserves a record of a dramatic primeval period in the life of the Milky Way which ended long before the Sun was born.

"The computer simulations started from the Big Bang, around 13 billion years ago, and used the universal laws of physics to simulate the evolution of dark matter and the stars. These simulations are the most realistic to date, capable of zooming into the very fine detail of the stellar halo structure, including star "streams" -- which are stars being pulled from the smaller galaxies by the gravity generated by colliding galaxies.

One in one hundred stars in the Milky Way belong to the stellar halo, which is much larger than the galaxy's familiar spiral disk. These stars are almost as old as the Universe.

The research was conducted by Durham University's Institute for Computational Cosmology and their collaborators at the Max Planck Institute for Astrophysics, in Germany, and Groningen University, in Holland. The research was part of the Aquarius Project, which uses the largest supercomputer simulations to study the formation of galaxies like the Milky Way.

The artist’s illustration at the top of the page shows the hot gas halo enveloping the Milky Way and Magellanic Clouds. Our galaxy — and the nearby Large and Small Magellanic Clouds appear to be surrounded by an enormous halo of hot gas, several hundred times hotter than the surface of the Sun and with an equivalent mass of up to 60 billion Suns, suggesting that other galaxies may be similarly encompassed and providing a clue to the mystery of the galaxy’s missing baryons, according to a research team using data from NASA’s Chandra X-ray Observatory. In the artist’s rendering above our Milky Way galaxy is seen at the center of a cloud of hot gas. This cloud has been detected in measurements made with Chandra as well as with the European Space Agency’s XMM-Newton space observatory and Japan’s Suzaku satellite. The illustration shows it to extend outward over 300,000 light-years — and it may actually be even bigger than that.


The Daily Galaxy via Durham University, UK

Image credit: Credit: Andrew Cooper/John Helly, Durham University.

Comments

Coincident with this research is the apparent, newly-discovered fact that 'dark halos' in spiral galaxies (like the Milky Way) do not exist. This newly-published physics "toy model," which is also a dynamical simulation, compellingly demonstrates that the alleged 'dark matter' need not and does not exist: gravitysim.n e t

I don´t give much for PC-simulations programmed with mathematical equations which are based on presumptions of cosmos as with “big bang”, “dark matter”, “dark energy” and a Newtonian celestial mechanics that are directly contradicted by observations regarding the formative motions in galaxies.

Statements as “Cosmologists predict that the early Universe was full of small galaxies . . . “, says it all: A prediction points forward in a development and not backwards. Such a statement really reveals how modern cosmological scientists work:

“We have a certain idea of what we see, (even if it is contradicted) and if we make the right equations and put these into a PC, we can see how it all fits together both forwards and backwards”.

And if it doesn’t fit, we just adjust the equations to fit what we think – adding epicycles to epicycles en masse.

But all they get is what they have programmed into the PC, including some “dark mysteries” and the overlooked gravity rotation galactic anomaly.

NB: And of course, continuing the consensus ideas without being critical, they also get more funding so they can continue their assumptive business.

NB:
Here are some alternative Weekend Features to watch and read:

Nature Lindau video: Is dark matter real?
http://lindau.nature.com/lindau/2012/10/is_dark_matter_real/

Sciences Looming Tipping Point
http://www.thunderbolts.info/wp/2012/11/19/sciences-looming-tipping-point/

OBS: Newer you mind to accept the ancient "mythological" part in the Thunderbolts.info article. All references to ancient petroglyphs and mythology are based on the confused and ideas of planetary deities instead of Milky Way deities i.e. the primeval creative powers of the Milky Way.


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