Tremendous Star: La Superba

We call “Superb”, “La Superba”, a star that you can't see with naked eyes but can be viewed through binoculars. It also has a more scientific name: Y Canum Venaticorum. We describe this star in our article.
This "dark red" star is a red giant with a mass of 3 times the mass of our sun and a diameter of 215 times. As you may have noticed, it is a little too "bulging" and as a natural result of its bloating, its surface temperature is less than half the Sun, only about 2,500 degrees Celsius. However, due to its huge size, it has 4,400 times more lighting power than the Sun.

This star, which is located about 700 light years away from us, looks so dark red, not only because of its low surface temperature but also in a classification called "carbon star".
When the red giant stars turn all the hydrogen in their nuclei into helium, they start burning helium. Energy generation of helium, which reacts to nuclear power, is finally converted into carbon. Some of this carbon produced in the core of La Superba rises to the surface and scatters into the atmosphere of the star. One feature of carbon is that it absorbs blue light. Therefore, the blue tones of the light emitted from the star are eliminated and only the light emitted from the red wavelength reaches us. Consequently, the carbon stars shine in a dark red color like La Superba.

La Superba will gradually turn into a planetary nebula, leaving its outer layers to space over the next million years. Its core, which is entirely composed of Helium and Carbon, will stop producing energy and will be exposed in the center of this planetary nebula as a very hot Earth-sized White Dwarf. In the next million years, the nebula around the white dwarf will crumble, and the once magnificent La Süperba, as a small white dwarf in the space gap, will slowly fade away and disappear.


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