18.3 NOTES What is magnitude? Objective: Compare apparent
... Without a telescope, you can see about 2000 stars in the night sky. Some appear brighter than others. One way to measure a star’s brightness is by magnitude. The brightness of a star depends on its temperature, size, and distance from Earth. A hot star is usually brighter than a cool star. A large s ...
... Without a telescope, you can see about 2000 stars in the night sky. Some appear brighter than others. One way to measure a star’s brightness is by magnitude. The brightness of a star depends on its temperature, size, and distance from Earth. A hot star is usually brighter than a cool star. A large s ...
File
... 8-25 X larger than our Sun Consume their fuel very fast – die more quickly and more violently Star expands into a Supergiant which causes the core to collapse and the outer portion to explode creating a Supernova then a Neutron Star ...
... 8-25 X larger than our Sun Consume their fuel very fast – die more quickly and more violently Star expands into a Supergiant which causes the core to collapse and the outer portion to explode creating a Supernova then a Neutron Star ...
Study Guide Astronomy
... 9. What is the relationship between surface temperature and brightness for main sequence stars on the Hertzsprung-Russell Diagram? ...
... 9. What is the relationship between surface temperature and brightness for main sequence stars on the Hertzsprung-Russell Diagram? ...
The winter triangle - NRC Publications Archive
... The brightest star in our skies other than the Sun is Sirius, visible in the south-west in the evenings at this time of year. There is no mistaking it. It flashes like a blue-white diamond. Of course the star itself shines a steady bluish white; our turbulent atmosphere provides the light show. The ...
... The brightest star in our skies other than the Sun is Sirius, visible in the south-west in the evenings at this time of year. There is no mistaking it. It flashes like a blue-white diamond. Of course the star itself shines a steady bluish white; our turbulent atmosphere provides the light show. The ...
Review Day
... between temperature and brightness. Identifies four characteristics of stars Temperature Brightness Color Category ...
... between temperature and brightness. Identifies four characteristics of stars Temperature Brightness Color Category ...
Sample exam 2
... 4. If the Sun ceased fusion, which of the following would first stop being detected on Earth? a. Visible light ...
... 4. If the Sun ceased fusion, which of the following would first stop being detected on Earth? a. Visible light ...
After Dark in Allenspark
... by step from the easier stars to the tougher ones. Depending on what stars you know best, your favorite order to star hop will be different, but here's one that works for me (and yes, I field tested it this time). Start with Orion, one of the most recognizable winter constellations. It'll be reasona ...
... by step from the easier stars to the tougher ones. Depending on what stars you know best, your favorite order to star hop will be different, but here's one that works for me (and yes, I field tested it this time). Start with Orion, one of the most recognizable winter constellations. It'll be reasona ...
What Can We See in the Night Sky?
... • Groups of stars that are close together and travel together are known as star clusters • Star clusters are part of galaxies • Open clusters – contain about 50 to 1000 stars – dispersed along the Milky Way’s main band ...
... • Groups of stars that are close together and travel together are known as star clusters • Star clusters are part of galaxies • Open clusters – contain about 50 to 1000 stars – dispersed along the Milky Way’s main band ...
stars and constellations
... the axis will only point at Polaris for a few hundred years, then, another star will be “North”. The ancient Egyptians could not have used Polaris as a compass. Why stars “move” ...
... the axis will only point at Polaris for a few hundred years, then, another star will be “North”. The ancient Egyptians could not have used Polaris as a compass. Why stars “move” ...
Astronomy – Interpreting Main Sequence Star Data The
... Astronomy – Interpreting Main Sequence Star Data The classification of stars by surface temperature and spectral pattern is a painstaking process requiring the efforts of many scientists from hundreds of observatories around the world. To make it easier to refer to the different types of main sequen ...
... Astronomy – Interpreting Main Sequence Star Data The classification of stars by surface temperature and spectral pattern is a painstaking process requiring the efforts of many scientists from hundreds of observatories around the world. To make it easier to refer to the different types of main sequen ...
The Sun and the Stars
... • While all stars appear as a faint white light from a distance they can be bluish, bluish-white, yellow, orangish, or reddish depending on their surface temperature • Scientists use a powerful telescope to analyze the colour of the star and then its surface temperature. Since the Sun is yellow, we ...
... • While all stars appear as a faint white light from a distance they can be bluish, bluish-white, yellow, orangish, or reddish depending on their surface temperature • Scientists use a powerful telescope to analyze the colour of the star and then its surface temperature. Since the Sun is yellow, we ...
stars and galaxies – study guide
... 23. On an H-R Diagram, stars are classified by temperature and absolute magnitude. 24. What is the next stage of the sun? Red Giant 25. An example of a winter constellation is Orion. 26. White dwarf stars are hot, faint, Earth-sized stars. 27. A black hole is the densest object in the universe, and ...
... 23. On an H-R Diagram, stars are classified by temperature and absolute magnitude. 24. What is the next stage of the sun? Red Giant 25. An example of a winter constellation is Orion. 26. White dwarf stars are hot, faint, Earth-sized stars. 27. A black hole is the densest object in the universe, and ...
Star Life Cycle and classroom textbooks for research!
... 2. Find a diagram on the internet showing the life cycle of a star and paste it in your document. (2 pts) 3. Find a “Hertzsprung-Russell Diagram” and paste it in your document. (2pts) 4. Using the diagrams above Answer the following questions. (1 pt each) a. b. c. d. e. f. g. h. i. j. k. l. ...
... 2. Find a diagram on the internet showing the life cycle of a star and paste it in your document. (2 pts) 3. Find a “Hertzsprung-Russell Diagram” and paste it in your document. (2pts) 4. Using the diagrams above Answer the following questions. (1 pt each) a. b. c. d. e. f. g. h. i. j. k. l. ...
Astronomical distances and Stellar magnitudes
... 1. What is meant by a light year? 2. What is meant by an astronomical unit (AU)? 3. What is meant by a parsec (pc)? 4. What is meant by a mega parsec (Mpc)? 5. What is meant by the apparent magnitude of an astronomical object? 6. Give the approximate distance of the following in AU: (a) Sun to the E ...
... 1. What is meant by a light year? 2. What is meant by an astronomical unit (AU)? 3. What is meant by a parsec (pc)? 4. What is meant by a mega parsec (Mpc)? 5. What is meant by the apparent magnitude of an astronomical object? 6. Give the approximate distance of the following in AU: (a) Sun to the E ...
Place in Space
... Q1:The fastest thing that we know of is light which travels at a speed of 186,000 miles or 300,000 kilometres per second in empty space. Light can travel about seven times around Earth in one second. Astronomers use the speed of light to measure how far away things are in space. They use light years ...
... Q1:The fastest thing that we know of is light which travels at a speed of 186,000 miles or 300,000 kilometres per second in empty space. Light can travel about seven times around Earth in one second. Astronomers use the speed of light to measure how far away things are in space. They use light years ...
Understanding Stars
... Stefan-Boltzman Law A dense hot object emits light of all colors – More of one color than others • “peak” color – The peak color is determined by the temperature • Hotter = bluer! – demo Stellar Spectroscopy Astronomers can tell what elements are in a star by the lines in its spectrum Peak color det ...
... Stefan-Boltzman Law A dense hot object emits light of all colors – More of one color than others • “peak” color – The peak color is determined by the temperature • Hotter = bluer! – demo Stellar Spectroscopy Astronomers can tell what elements are in a star by the lines in its spectrum Peak color det ...
Surface Environments of the Planets o+ our Solar System
... In this exercise, you will also become more familiar with the various naming systems for stars. Remember, only the brightest stars which form our constellations have been given proper names. There are thousands of stars that have either Bayer Greek letter names, and even more that have Flamsteed num ...
... In this exercise, you will also become more familiar with the various naming systems for stars. Remember, only the brightest stars which form our constellations have been given proper names. There are thousands of stars that have either Bayer Greek letter names, and even more that have Flamsteed num ...
ref H-R Spectral types
... In this Activity we have had a look at the Balmer series, and how its occurrence in the photospheres of stars will vary with temperature. The temperature, and hence the colour and spectral line strength characteristics of stars, is used to classify them into types O, B, A, F, G, K and M-type stars. ...
... In this Activity we have had a look at the Balmer series, and how its occurrence in the photospheres of stars will vary with temperature. The temperature, and hence the colour and spectral line strength characteristics of stars, is used to classify them into types O, B, A, F, G, K and M-type stars. ...
INV 12B MOTION WITH CHANGING SPEED DRY LAB DATA
... 3. How does the sun compare to the other stars on the main sequence? (Hint: The sun’s color is …..What part of the main sequence is it in – upper left, lower left, etc.?) ...
... 3. How does the sun compare to the other stars on the main sequence? (Hint: The sun’s color is …..What part of the main sequence is it in – upper left, lower left, etc.?) ...
Earth
... standard distance from Earth) from 20 pc. • Since the star will be “closer”, it will be brighter. • A brighter star has a smaller magnitude • Thus, we expect an absolute magnitude less than ...
... standard distance from Earth) from 20 pc. • Since the star will be “closer”, it will be brighter. • A brighter star has a smaller magnitude • Thus, we expect an absolute magnitude less than ...
Document
... g. Which star is the closest (find m-M)? h. Which star has the smallest parallax angle? i. ...
... g. Which star is the closest (find m-M)? h. Which star has the smallest parallax angle? i. ...
There's more than one way to make a Blue Straggler 1
... There's more than one way to make a Blue Straggler The Collision Model ...
... There's more than one way to make a Blue Straggler The Collision Model ...