Tiny galaxies bursting with Star birth discovered by Hubble Space Telescope

Friday, November 11th, 2011 6:55:38 by

Tiny galaxies bursting with Star birth discovered by Hubble Space Telescope

The NASA/ESA (European Space Agency) Hubble Space Telescope has used its infrared vision to peek back nine billion years to uncover a remarkable mass of tiny and young galaxies that are currently brimming with star births.

It is a well known fact that many stars are churned at such an alarming rate that the current stars in those young galaxies would double in number 10 million years from now.

Comparatively, the Milky Way galaxy has taken an even more time to increase its stellar population which certainly gives us an idea of how big our universe is.

Compared to the Milky Way, these galaxies dwarf the size of our galaxy. However, the star formation phenomenon is extremely high for a young galaxy.

The reason these young galaxies have showed up on the Hubble images is because of the radiation from young and hot stars has forced oxygen in to the gaseous surroundings which in turn has lit up the stars like a fluorescent sign.

According to astronomers, this high rate of star birth is an important part of the creation of a dwarf galaxy.

Dr. Arjen van der Wel of the Max Planck Institute of Astronomy at Heidelberg in Germany said that him and his team were not specifically looking for those galaxies but due to their unusual colours, they stood out.

Dr. Arjen van der Wel is the senior author of the forthcoming issue of Astrophysical Journal and said, “The galaxies have been there all along but up until recently, astronomers have been able only to survey tiny patches of sky at the sensitivities necessary
to detect them.”

These recent observations conducted by the European Space Agency show that the newly discovered galaxies were very common almost nine billion years ago but are still at odds as to why these galaxies are producing stars at such a high rate.

 

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