'Red supergiant' diaporamas de présentation

Main Sequence Lifetimes

Main Sequence Lifetimes. Time on Main Sequence How much fuel it has (Core H) How fast it consumes the fuel (Luminosity). Main Sequence Lifetimes. Main Sequence Lifetimes. Our Sun M = 1 M ( ?) and L = 1 L ( ?) t MS-lifetime = 10 10 years = 10 billion years

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The Physical Properties of Red Supergiants

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Chapter 22

Chapter 22. Test Review. Astronomers can measure distance by using ____________, which is an object's apparent shift in position when viewed from two different locations. parallax . A ____________ is a unit of measurement often used to describe how far away a star is from Earth.

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Stars

Stars. What is a star?. The objects that heat and light the planets in a system A star is a ball of plasma held together by its own gravity Nuclear reactions occur in stars (H ? He) Energy from the nuclear reactions is released as electromagnetic radiation. Characteristics of Stars.

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Stellar Structure and evolution

Stellar Structure and evolution. Lecture 11: Evolution of massive stars. Learning Outcomes. The student will learn the following concepts Evolution of a high mass star - burning stages and lifetimes The detailed model predictions and a schematic overview

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THE STAR LIFE CYCLE

THE STAR LIFE CYCLE. NEBULA. A nebula is a cloud of gas (hydrogen) and dust in space. Nebulae are the birthplaces of stars. There are different types of nebula.

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THE STAR LIFE CYCLE

THE STAR LIFE CYCLE. NEBULA. A nebula is a cloud of hydrogen gas and dust in space. Nebulae are the birthplaces of stars. There are different types of nebula: An Emission Nebula: such as Orion nebula, glows brightly because the gas is energized by the stars that have formed in it.

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Measuring the Stars

Measuring the Stars. Pg. 41. Groups of stars. Long ago, people grouped bright stars and named them after animals, mythological characters or every day objects. Called constellations There are 88 constellations

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Distribution of Matter in Space

Distribution of Matter in Space. What is a Star?. H-R animation Star Spectra (Gizmo). Much of the visible matter in space makes up stars -- hot, glowing spheres of hydrogen gas that give off tremendous light energy . The billions and billions of stars vary in: Size Density

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More Star Stuff

More Star Stuff. H-R Diagram. H-R Diagram. Local Star Map. A Red Supergiant. White Dwarf. Nebula. More Nebula. Luminosity. L ~ R 2 T 4 double radius = 4 times more light given off double temperature = 16 times more light given off. HDF. 15 arcseconds wide Tennis ball at 100yds

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Betelgeuse

Betelgeuse. Ameenah Elam. About The Name. Arabic for "shoulder of the giant". Could also mean "hand of al- jauza " where al- jauza is the Arabs' "Central One". Also known as the Martial Star. The Fame!.

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Stellar Objects

Stellar Objects . Sophia Williams & Amtur 6 th P eriod Science. Red Supergiant. Neutron Stars. Main S equence Star: The Sun.

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Star Life Cycles (35)

Star Life Cycles (35). Pre-birth Stars. Stars are born in nebula . Expanses of dust and gas (hydrogen atoms). Protostars begin to form when gravity pulls the matter together. Pre-birth Stars (cont.). Not all protostars become stars.

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Supernovas

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Betelgeuse

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