which of the stars on the diagram is a red giant? course hero

Which of the stars on the HR diagram is a red giant?

Although a star cools when it becomes a red giant, it grows so large its luminosity (or total power emitted) increases. Therefore, the star also moves up the H-R diagram. The region above and to the right of the main sequence is occupied by the red giants....The Pleiades Data.ClusterRADecM3440.542.785 more rows

What class of star is a red giant?

The appearance of the red giant is from yellow-orange to red, including the spectral types K and M, but also class S stars and most carbon stars.

What is a red giant star example?

According to the Hertzsprung-Russell diagram, a red giant is a large non- main sequence star of stellar classification K or M; so-named because of the reddish appearance of the cooler giant stars. Examples include Aldebaran, in the constellation Taurus and Arcturus.

Which type of star ends up to be a red super giant?

The star Betelgeuse in the constellation of Orion is a red supergiant. Red supergiants evolve from large main sequence stars. These are stars which contain more than 8 times the mass of our Sun.

What stars are super red giants?

The five largest known supergiants in the galaxy are red supergiants: VY Canis Majoris, Mu Cephei, KW Sagitarii, V354 Cephei, and KY Cygni. Each of these stars has a radius larger than 1500 times the size of the Sun. In comparison, regular red giant is only 200 to 800 times the size of the Sun.

What is a red giant star quizlet?

Red giant star. a very large star of high luminosity and low surface temperature. Red giants are thought to be in a late stage of evolution when no hydrogen remains in the core to fuel nuclear fusion. Red supergiant star.

What makes a red giant star?

To become a red giant, a particular star must have between half our sun's mass, and eight times our times our sun's mass. Astronomers call such stars low- or intermediate-mass stars. So you can see that our sun is one of the stars that will inevitably, someday, become a red giant.

Is the Sun a red giant star?

In a few billion years, the sun will become a red giant so large that it will engulf our planet. But the Earth will become uninhabitable much sooner than that. After about a billion years the sun will become hot enough to boil our oceans. The sun is currently classified as a “main sequence” star.

Is red giant a binary star?

A binary pair of red stars -- one giant, one dwarf -- has been discovered by a collaboration of astrophysicists from the UK and China. A binary pair of red stars, one giant one dwarf, has been discovered by a collaboration of astrophysicists from the University of Hertfordshire and The Chinese Academy of Sciences.

Are supergiant stars red or blue?

While red supergiants are the largest stars, each with a radius between 200 and 800 times the radius of our Sun, blue supergiants are decidedly smaller. Most are less than 25 solar radii. However, they have been found, in many cases, to be some of the most massive in the universe.

What color are supergiant stars?

Supergiant stars are often red or blue in color; and surprisingly the blue supergiants have hotter core temperatures. Red is often the color emitted from cooler stars, while white is the hottest. Supergiant stars have a large temperature range that falls between 3,000K to over 40,000 K.

What is the largest red giant star?

Red supergiants (RSGs) are stars with a supergiant luminosity class (Yerkes class I) of spectral type K or M. They are the largest stars in the universe in terms of volume, although they are not the most massive or luminous....Properties.Spectral typeTemperature (K)K1–1.54,100K2–34,015K5–M03,840M03,7908 more rows