Astronomers Observe A Dying Red Giant Star’s Final Act

To begin, an article published on called “Astronomers Observe A Dying Red Giant Star’s Final Act” by Hyosun, Kim. This article perfectly correlates with our 14th conceptual objective on how stars evolve and die. The article begins talking about how astronomers were observing a star called LL Pegasi and its neighboring star. Furthermore, the article talks about that this is a Red Giant Star in its final stage dying by  disposing most of its bulk of gas. Next, the article talks about about how the orbital motion of the star is causing the star to massively lose its gas. The articles describes its because of the elliptical orbit that is determining the factor of how the star is losing so, much gas. To conclude, the article gives some brief information on the telescope that was able to record this observation which was the ALMA telescope that is pertained the country of Chili.

This article perfectly fits in with our conceptual objective because it gives us a detailed observation on how a Red Giant Star is dyeing and describes its final stages. In, one of our lectured-tutorials that we completed for this objective called “Stellar Evolution” describes us the stages of a dyeing Red Giant Star. The lectured-tutorial explains that Red Giant Stars develop when main sequence stars are not able to support nuclear fusion of hydrogen in their cores will turn them into Red Giants. Furthermore, after a long period of time the star will shed off its outer layers and produce  planetary nebula. In contrast, the planetary nebula will eventually start to begin to degrade which will lead into a White Dwarf. We were able to practice these stages in the lectured-tutorial by describing the stages of a Red Giant Star from the beginning to the very end of the Red Giant Star. This connection can be made with the article on the Red Giant called LL Pegasi because it describes how this main sequence star turned into a Red Giant and then finally, dyeing and turning into a white dwarf.

To conclude, I learned a ton of information between the article, lectured-tutorial, and discussions that were made for our conceptual objective in class. This article was able to describe the final stages of the Red Giant Star and I was able to gather information from our lectured-tutorial to describe the entire process of the LL Pegasi a Red Giant Star. I find this article very useful because it gives us insights a perfect observation of the final stages of a Red Giant Star which gives us a better understanding on how exactly these Red Giant Star die and what they leave behind.



Jacob Ybarra.


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