The Life of Sirius A

How was Sirius A born?

• Planetary Nebula - Type of emission nebula consisting of an expanding, glowing shell of ionized gas.

• Solar Nebula- Gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation.

• Steller Nebula- Clouds that form new stars

• Supernova- A powerful and luminous stellar explosion.

What stage is Sirius A on right now?

• White Dwarf

• Red Giant

• Main Sequence Star

• Black Hole

In the future, Sirius A will eventually turn into a...

• Red Supergiant- An giant star that has consumed its core's supply of hydrogen fuel.

• Black Dwarf-A dwarf that has cooled no longer emits heat or light.

• Main Sequence Star- A star that is fusing hydrogen in its core and has a stable balance of outwards pressure for core nuclear fusion.

• Red Giant- A dying star in almost the final stages of the star life cycle.

What is the age, size and color of Sirius A?

• Age:7.105 billion years Size:10.98 million mi Color: Red

• Age:10.01 million years Size:383.4 million mi Color: Reddish

• Age: 242 + 5 million years Size:3,631.2 mi Color: White

• Age: 237 - 247 million years Size:739,640 mi Color: Blue White

 What is the temperature and luminosity of Sirius A?

• Temperature: 9,940 Luminosity: 10

• Temperature: 10,955 Luminosity: 1

• Temperature: 25,200 Luminosity:10^{-2}

• Temperature: 5,778 Luminosity: 1

What is a HR Diagram?

• A graph in which stars are plotted against their spectral types (temperatures) and their brightness (luminosity).

• A graph that measures the radius, size and color of a star.

• A diagram the find new stars by using temperature and luminosity.

• A scatter plot that plots only planets and star by using luminosity and gas.