Showing posts with label Astronomy News. Show all posts
Showing posts with label Astronomy News. Show all posts

Friday, July 24, 2015

Brown Dwarfs Share the Same Making Process as Stars - http://clapway.com/2015/07/24/brown-dwarfs-share-the-same-making-process-as-stars654/

It’s hard to believe that only twenty years ago, in 1995, the first dwarf was discovered. It’s even harder to believe the substellar object was found so late when it had been a theory since the sixties.


Yet, so much can happen in so little amount of time. Recently on the astronomy front, a brown dwarf was observed to have shot off some jets, which is pretty cool for a couple of reasons.


But just in case you were confused about this and are not familiar with astronomy all too much, brown dwarfs are objects in space that are classified between being gas giants and stars. Since they navigate the middle area, it’s been tough trying to guess how they form, as not much is known about them.


Yet, most of the theories said that the dwarfs were more than likely similar to stars in how they form. So, everyone tended to go along with it, and that is why the news today is so exciting.


By studying these masses, we now understand the universe better, which is why a press release by the National Radio Astronomy Observatory spoke about the jets released by brown dwarfs in observation.


The Study about Brown Dwarfs


To help understand brown dwarfs better, an observation was conducted 450 light years away from Earth. There in the bull constellation, four of the brown dwarfs in the sample emitted jets.

This was a tad odd as this behavior usually found in stars bigger during the early part of their formation. So, scientists were a bit thrown off by this. The instruments that detected the jets relayed info by the Karl G. Jansky VLA by radio observation. Thereafter, the dwarfs were observed by different instruments in order to say that this was a real finding and not a fluke or false finding.


finding confirmed, then published


Once it was confirmed, the findings were then published in the Astrophysical Journal on the 30th of June. For all involved and the science community, the findings present the first time that a dwarf was observed displaying such a behavior. No other dwarf has been seen shooting jets in an early part of its formation.


This would mean that the theory that dwarfs form similarly to stars despite being too small to have Hydrogen-1 fusion reactions at their cores and such holds true. If dwarfs had not emitted jets or done anything like this, it would mean that the dwarfs have a similar formation to that of planets.


brown dwarf formation makes it the star’s little brother


So what does this mean? Now, just think as dwarfs as the little brother or sister to the stars. Or better yet, think of it as mini me, without as much power as a star and less mass.

Thus, there is one mystery solved about the universe, only a billion more to go. Further studies may reveal more about the behavior about dwarfs so keep a look out for those.



 


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Brown Dwarfs Share the Same Making Process as Stars

Thursday, June 25, 2015

Cannibalistic Galaxy is Growing - http://clapway.com/2015/06/25/cannibalistic-galaxy-is-growing654/

Recent discovery was by scientists in Europe


Researchers have seen evidence of signs of a cannibalistic galaxy is growing. The UPI report shares this amazing discovery with the world in the above image of a galaxy consuming another galaxy. The discovery showed the world and confirmed some people’s suspicions that a cannibalistic galaxy is possible in helping it grow in size.


What in the world does this mean?


To date, scientists have only speculated the idea of a cannibalistic galaxy’s growing in size and considered the idea very plausible, but finding the evidence to make this concrete was difficult. Until today. The news of this discovery is to say the least, very exhilarating for both the team that discovered the spectacle but also for the science community in large.


Any news get released on it?


Ph.D student Alessia Longobardi, Ortwin Gerhard, Magda Arnaboldi, and a J.C. Mihos released a paper with Astronomy & Astrophysics for the July 2015 volume about their discovery of this phenomena that is the cannibalistic galaxy in more detail. According to the link, the discovery was accepted near the end of May until it was finally shared with the scientific community in the July volume.

Gerhard commented in the UPI report, “We are witnessing a single recent accretion event where a medium-sized galaxy fell through the center of Messier 87 and as a consequence of the enormous gravitational tidal forces, its stars are now scattered over a region that is 100 times larger than the original galaxy!”


How did they find it? How lucky can you get?


In finding how the cannibalistic galaxy grew in size, the team studied the movement of the planetary nebulae only to find something data that showed evidence the consumption of the other galaxy within this one, except now expanded.

The odds of finding this marvel was very slim but very fortuitous for the team as the information gathered from this may provide further information and/or discoveries akin to this and answer other questions such as what is going on with the galaxy that was consumed? The affects, effects, possible continual size expansion, etc. There is much to be learned from this discovery.



 


 


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Cannibalistic Galaxy is Growing