The Hertzsprung-Russell Diagram
... – The full classification of a star includes both a spectral type and a luminosity class: • The Sun is a G2 V • Proxima Centauri is M5 V • Betelgeuse is M2 I • Sirius A: A1 V • Sirius B: DA2 V ...
... – The full classification of a star includes both a spectral type and a luminosity class: • The Sun is a G2 V • Proxima Centauri is M5 V • Betelgeuse is M2 I • Sirius A: A1 V • Sirius B: DA2 V ...
Chapter 09 - The Independent School
... Example: Star Radii Polaris has just about the same spectral type (and thus surface temperature) as our sun, but it is 10,000 times brighter than our sun. ...
... Example: Star Radii Polaris has just about the same spectral type (and thus surface temperature) as our sun, but it is 10,000 times brighter than our sun. ...
(as Main Sequence Stars)?
... tenth as massive as our sun? A: 1 billion years = 109 years B: 10 billion years = 1010 years C: 100 billion years = 1011 years D: 1 trillion years = 1012 years ...
... tenth as massive as our sun? A: 1 billion years = 109 years B: 10 billion years = 1010 years C: 100 billion years = 1011 years D: 1 trillion years = 1012 years ...
Volcanoes and Igneous Activity Earth
... • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called planetary nebula. ...
... • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called planetary nebula. ...
Star Life Cycle – Web Activity
... 25. If a star runs out of fuel and collapses, what wins? 26. What is the mass range of stars that will create planetary nebulae and white dwarfs? 27. What is the mass of the core that makes a white dwarf and how big is the white dwarf? 28. Click on “White Dwarf”. Read the description and explain how ...
... 25. If a star runs out of fuel and collapses, what wins? 26. What is the mass range of stars that will create planetary nebulae and white dwarfs? 27. What is the mass of the core that makes a white dwarf and how big is the white dwarf? 28. Click on “White Dwarf”. Read the description and explain how ...
Sample Midterm - IUPUI Physics
... 13. If you plot a very large number of random stars on a HR Diagram measuring their apparent magnitude vs. their B-V magnitude what will you get? a) A nice neat plot with a clear main sequence and clear red giant branch b) A nice neat plot with a clear main sequence but a few red giant branches c) ...
... 13. If you plot a very large number of random stars on a HR Diagram measuring their apparent magnitude vs. their B-V magnitude what will you get? a) A nice neat plot with a clear main sequence and clear red giant branch b) A nice neat plot with a clear main sequence but a few red giant branches c) ...
Main-sequence stars - Stellar Populations
... Main-sequence stars are fusing hydrogen into helium in their cores like the Sun Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
... Main-sequence stars are fusing hydrogen into helium in their cores like the Sun Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
The “Life” of Non-living Stars - Etiwanda E
... Stars begin life as a ball of gas and dust Temperatures reach 10,000,000 C Nuclear Fusion begins This stage known as a Protostar ...
... Stars begin life as a ball of gas and dust Temperatures reach 10,000,000 C Nuclear Fusion begins This stage known as a Protostar ...
P10263v1.2 Lab 6 Text
... parsecs away, the Small Magellanic Cloud (a small satellite galaxy orbiting our own Milky Way) is about 53,000 parsecs away, making observations of individual stars much more difficult. Thus, we cannot use the Pleiades method with the Small Magellanic Cloud since the only individual stars we can suc ...
... parsecs away, the Small Magellanic Cloud (a small satellite galaxy orbiting our own Milky Way) is about 53,000 parsecs away, making observations of individual stars much more difficult. Thus, we cannot use the Pleiades method with the Small Magellanic Cloud since the only individual stars we can suc ...
H-R Diagram
... absolute magnitude. From such a diagram, other information about a star's properties and life cycle can be determined. A simplified H-R diagram appears in your textbook. In this laboratory, you will construct an H-R diagram using data on the 20 stars that are nearest to our sun (Figure 21.1) and the ...
... absolute magnitude. From such a diagram, other information about a star's properties and life cycle can be determined. A simplified H-R diagram appears in your textbook. In this laboratory, you will construct an H-R diagram using data on the 20 stars that are nearest to our sun (Figure 21.1) and the ...
Lecture 10 Advanced Variable Star Stuff March 18 2003 8:00 PM
... At least half of all "stars" in the sky are binary systems of some type. If their orbits are aligned with our line of sight, they may be eclipsing binaries. Easiest variable to understand: When both are visible, light is at maximum. When one is in front of the other, it blocks some of the light. ...
... At least half of all "stars" in the sky are binary systems of some type. If their orbits are aligned with our line of sight, they may be eclipsing binaries. Easiest variable to understand: When both are visible, light is at maximum. When one is in front of the other, it blocks some of the light. ...
Star Classification
... given by a letter. Each letter corresponds to a color, and also to a range of temperatures. Note that these letters don’t match the color names; they are left over from an older system that is no longer used. ...
... given by a letter. Each letter corresponds to a color, and also to a range of temperatures. Note that these letters don’t match the color names; they are left over from an older system that is no longer used. ...
the May 2017 Newsletter!
... very close, the star could quite easily be seen as double in a 6 inch telescope. Other double stars were Castor and Alpha Centauri. Both of the latter have recently opened up from a close approach as viewed from Earth – Castor closed up for about 30 years. (See footnote 1); the Alpha Centauri pair a ...
... very close, the star could quite easily be seen as double in a 6 inch telescope. Other double stars were Castor and Alpha Centauri. Both of the latter have recently opened up from a close approach as viewed from Earth – Castor closed up for about 30 years. (See footnote 1); the Alpha Centauri pair a ...
White Dwarfs
... - Eventually, shells thrown off star altogether! 0.1 - 0.2 MSun ejected. - Shells appear as a nebula around star, called "Planetary Nebula" (awful, historical name, nothing to do with planets). ...
... - Eventually, shells thrown off star altogether! 0.1 - 0.2 MSun ejected. - Shells appear as a nebula around star, called "Planetary Nebula" (awful, historical name, nothing to do with planets). ...
Astro 10 Practice Test 2
... b. The overall luminosity of an object is the key to figuring out its mass. c. Since you know how bright each of these objects really is, you can measure their apparent brightnesses and calculate how far away they really are. d. Knowing the true brightness of an object is the most important thing yo ...
... b. The overall luminosity of an object is the key to figuring out its mass. c. Since you know how bright each of these objects really is, you can measure their apparent brightnesses and calculate how far away they really are. d. Knowing the true brightness of an object is the most important thing yo ...
Topics for Today`s Class Luminosity Equation The Heart of
... Surface flux due to a blackbody spectrum ...
... Surface flux due to a blackbody spectrum ...
center of mass
... magnitude at a distance of 10 parsecs. Use this definition, how light intensity changes with distance, and how the stellar magnitude system is set up to determine the following. If a star's apparent visual magnitude is less than its absolute visual magnitude, which of the following is correct? a. Th ...
... magnitude at a distance of 10 parsecs. Use this definition, how light intensity changes with distance, and how the stellar magnitude system is set up to determine the following. If a star's apparent visual magnitude is less than its absolute visual magnitude, which of the following is correct? a. Th ...
Auriga (constellation)
Auriga is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy and remains one of the 88 modern constellations. Located north of the celestial equator, its name is the Latin word for ""charioteer"", associating it with various mythological charioteers, including Erichthonius and Myrtilus. Auriga is most prominent during winter evenings in the Northern Hemisphere, along with the five other constellations that have stars in the Winter Hexagon asterism. Because of its northern declination, Auriga is only visible in its entirety as far as 34° south; for observers farther south it lies partially or fully below the horizon. A large constellation, with an area of 657 square degrees, it is half the size of the largest constellation, Hydra.Its brightest star, Capella, is an unusual multiple star system among the brightest stars in the night sky. Beta Aurigae is an interesting variable star in the constellation; Epsilon Aurigae, a nearby eclipsing binary with an unusually long period, has been studied intensively. Because of its position near the winter Milky Way, Auriga has many bright open clusters in its borders, including M36, M37, and M38, popular targets for amateur astronomers. In addition, it has one prominent nebula, the Flaming Star Nebula, associated with the variable star AE Aurigae.In Chinese mythology, Auriga's stars were incorporated into several constellations, including the celestial emperors' chariots, made up of the modern constellation's brightest stars. Auriga is home to the radiant for the Aurigids, Zeta Aurigids, Delta Aurigids, and the hypothesized Iota Aurigids.