I’ve recently read an article titled, “What is the Biggest Star in the Universe” written by Fraser Cain. This article goes into great lengths of detail about how there is a certain organization of temperature that stars in our solar system abid by. This system that Cain tells us about is called the MK system. With the MK system, the operations of this go into a different arrangement of letters such as (O, B, A, F, G, K, M) meaning that the letter “O” represents the hottest form of a star and the letter “M” meaning the coolest form of a star. Just like how this system implements the determination of temperature this system also gives the vast variation of cumulative size and mass of a star. Stars that fall in the “O” range of the MK system are massive stars in our solar system, while any star that falls into the “K” through “M” range tend to be relatively smaller and a lot more cooler in temperature like for example the red dwarf star. Finally, the end of the article brings a new bit of information to our attention by stating that the star Eta Carinae is one of the biggest and most luminous stars in our solar system. This star tops off at 25,000 kalvins making this hot.
I found that this article relates to objective 8 by making a connection to our lesson that we learned in class that talked about the temperature and luminosity of a star. In our workbooks the area that covers this concept is titled “Luminosity, Temperature, and Size”, in which we learned that luminosity can be increased by either a temperature raise or the overall size and mass of a star. On page 55 of this chapter the example letter “D” shows that there are two hot plates, one being large with a higher temperature and the other being larger with a medium temperature rate. It is a fact that the larger plate was able to cook the spaghetti quicker than the smaller plate even though the smaller plate had a higher temperature. This proves that a star relative to its size has a much higher temperature rate if the star is larger. On page 57, question #9 of our workbooks it says that the more luminous star is usually the one with a higher temperature rate in the case of two stars being the same in size. Another good connection to this article is in question # 10 of this chapter. The stars U and V have the same temperature, however, star U is more luminous than the other meaning that star U is larger in size than star V. Eta Carinae is one of the largest stars in the universe and being one of the most luminous. This proves that bigger stars are higher in temperature and luminosity.
What I’ve learned from this objective is the knowledge to determine which stars are the hottest in temperature and which ones shine the brightest in luminosity. This article also gave me the clarification on how to determine temperature and luminosity of a celestial body by giving the example of the MK system and Eta Carinae. I also learned that size really does matter in the case of stars and their temp and luminosity.