From Manu Garcia: ” Sh2-308, a bubble”


Manu Garcia, a friend from IAC.

Manu needs a happier picture. He is really a nice guy.

The universe around us.
Astronomy, everything you wanted to know about our local universe and never dared to ask.

23/5/17
Cosmic blowing bubbles

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The NASA/ESA Hubble Space Telescope still has some tricks up his sleeve in his task of exploring the universe. On the one hand, it is able to imagine two adjacent parts of the sky simultaneously. This is done with two different cameras, a camera can be trained on the target object itself, and the other in a patch of nearby sky for new and potentially interesting regions of the cosmos can be observed simultaneously (the latter observations are known as parallel fields).

NASA/ESA Hubble Telescope

NASA/ESA Hubble ACS

NASA/ESA Hubble WFC3

This fascinating image shows some of the slender threads that make Sh2-308 , a thin, weak layer of gas located at 5,200 light – years away in the constellation Canis Major, Canis Major. This image shows part of a bubble like a cloud of gas, Sh2-308, surrounding a massive, violent star called EZ Canis Majoris . Advanced camera observations Hubble drilling are used and for the associated field parallel another view of the nebula produced by the wide field camera 3 Hubble used.

EZ Canis Majoris is known as a Wolf-Rayet star, and is one of the brightest stars known of its kind. Wolf-Rayet type stars are among the brightest and most massive massive stars in the universe, dozens of times our own sun represent the extremes of stellar evolution. Continuous heavy winds spilling the progenitors of such stars flooding and draining around the outer layers of the Wolf-Rayet stars. The rapid wind of a Wolf-Rayet star, therefore, sweeps the surrounding material to form gas bubbles. Its outer layer of hydrogen gas is exhausted, revealing inner layers of heavier elements fierce burning temperatures. The intense radiation leaving EZ Canis Majoris forms large stellar winds fluttering nearby material, sculpting and blowing outward.

These processes have shaped the surrounding gas in a large bubble. A hazy bubble produced by a Wolf-Rayet star is formed of ionized hydrogen (HII), which is often found in interstellar space. In this case, the outer layers are hydrogen EZ Canis Majoris, bubble, those being inflated by the flood of radiation, the air from the central star. The fringes of these bubbles are dark and spacious as you can see in this picture.

EZ Canis Majoris is responsible for creating the bubble Sh2-308 , the star threw off its outer layers to create the visible strands here. The intense and continuous radiation from the star bubble pushes farther and farther away, making getting bigger. Currently the edges of Sh2-308 are about 60 light years away. Beautiful as are these cosmic bubbles are fleeting. The same stars that form will also cause his death, eclipsándolas and sumiéndolas in a violent supernova explosion.

Credit:
ESA / Hubble and NASA

See the full article here .
See the ESA/Hubble article here . I prefer Manu because he is a friend of mine, a good friend in Astronomy.

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