The Failure Of Brown Dwarf’s

In an article, on called “Brown Dwarfs: Failed Stars Resembling Planets” perfects united with our 13th conceptual objective on how stars form and produce energy in their cores by nuclear fusion. To begin, the article describes that just because there are collapsing clouds of gas and dust doesn’t mean they can turn out to be stars. Furthermore, the article says these objects are called Brown Dwarfs and that they don’t become stars because they don’t have the mass to project nuclear fusion in their cores. Next, the article begins to dip in exactly what scientists consider these dwarfs to be called “failed stars.” The article explains that these Dwarfs start out on the main sequence and the clouds of dust and gas collapse together and a pro star as its core. Then the article describes what main sequence stars actually do. In which, gravity pushes inward until hydrogen fusion is applied in the star’s core. Furthermore, the article says that Brown Dwarfs are never able to reach this important stage in that the temperatures never get hot enough to start hydrogen fusion to start. So, then the material turns into a stable state and become a Dwarf.  Next, the article describes some of the characteristics of Dwarf’s in that they are small but either hot or cold. In the article it tells us there are three types of dwarfs which are red, white, and brown. To conclude, the article talks about why these dwarf’s are not considered planets.

This article correlates with our conceptual objective because the article talks about how stars need to be able to complete nuclear fusion in their cores. We learned this through our lectures and also learned this idea in our lectured-tutorial called “Star Formation and Lifetimes.” This lectured-tutorial taught us that stars come from a huge cloud of gas and dust. Furthermore, the star begins forming when something forcefully happens in the universe in that it forces the cloud of gas and dust to collapse inward into each other. Next, when the object becomes very hot nuclear fusion beings creating a main sequence star. In, the article it tells us that the stars and dwarfs begin as a huge cloud of gas and dust like we learned from our lecture-tutorial. Also, the article tells us that for a star to go into nuclear fusion it needs become hot and dense just like what we learned from our class discussions.

To conclude, I learned a ton of information from this conceptual objective. With everything we learned from our class discussions, lectured-tutorials, and this article they were all able to correlate with one another perfectly and describe how stars form from nuclear fusion. Also, the article was able to explain why Dwarfs are not stars and was able to explain exactly what happens when a cloud of gas and dust collide with each other in the main sequence. Overall, I learned a ton of information from this objective and the topic fit well with our previous conceptual objective.


Jacob Ybarra.


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