Ast 405, Pulsating Stars The following is based Chapter 14 of the
... The following is based Chapter 14 of the book. • 1. Stars whose brightness varies regularly due to some internal mechanism. • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL ...
... The following is based Chapter 14 of the book. • 1. Stars whose brightness varies regularly due to some internal mechanism. • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL ...
Stellar Explosions
... Fusion can reignite, burning off the new material Material keeps being transferred to the white dwarf, and the process repeats ...
... Fusion can reignite, burning off the new material Material keeps being transferred to the white dwarf, and the process repeats ...
giant molecular clouds
... Open Clusters of Stars (2) Large, dense cluster of (yellow and red) stars in the foreground; ~ 50 million years old ...
... Open Clusters of Stars (2) Large, dense cluster of (yellow and red) stars in the foreground; ~ 50 million years old ...
Study Guide for the Final Astronomy Exam
... A) Be able to write down the mass, luminosity, radius, temperature, and lifetime in solar units of main sequence O, G and M stars. 11) Unit 62Giant Stars A) Describe how shell burning creates giant stars 12) Unit 64: Post-Main Sequence of the Sun (low mass stars) A) Match the method of energy produc ...
... A) Be able to write down the mass, luminosity, radius, temperature, and lifetime in solar units of main sequence O, G and M stars. 11) Unit 62Giant Stars A) Describe how shell burning creates giant stars 12) Unit 64: Post-Main Sequence of the Sun (low mass stars) A) Match the method of energy produc ...
Northern and Southern Hemisphere Star Chart
... experience huge internal eruptions, blasting off great concentric shells of gas in the process until eventually all the star’s outer layers have been blown away into space. The tiny shrunken core, about the size of the Earth, remains as a white dwarf. White dwarf stars no longer produce light by nuc ...
... experience huge internal eruptions, blasting off great concentric shells of gas in the process until eventually all the star’s outer layers have been blown away into space. The tiny shrunken core, about the size of the Earth, remains as a white dwarf. White dwarf stars no longer produce light by nuc ...
Astronomy Study Guide
... 15. Why can the Hubble Space Telescope make images in visible light that are much better than images made by telescopes on Earth? Earth’s atmosphere makes objects in space look blurry. The sky on some mountaintops is clearer & is not brightened much by city lights. 16. What does a spectrograph do? B ...
... 15. Why can the Hubble Space Telescope make images in visible light that are much better than images made by telescopes on Earth? Earth’s atmosphere makes objects in space look blurry. The sky on some mountaintops is clearer & is not brightened much by city lights. 16. What does a spectrograph do? B ...
8.1 Stars
... neutrons only about 15 km across, it is called a neutron star. Neutron stars are made of the densest material known ...
... neutrons only about 15 km across, it is called a neutron star. Neutron stars are made of the densest material known ...
STUDY QUESTIONS #10 The MILKY WAY GALAXY diameter face
... 9. Using the rotation curve above, astronomers have calculated a mass for the whole Galaxy, out to about 50,000 light-year radius where there are no more stars, to be about 2 × 1011 M , yet by measuring light at all wavelengths, they only measure one sixth of that mass (3 × 1010 M ). Using the orbit ...
... 9. Using the rotation curve above, astronomers have calculated a mass for the whole Galaxy, out to about 50,000 light-year radius where there are no more stars, to be about 2 × 1011 M , yet by measuring light at all wavelengths, they only measure one sixth of that mass (3 × 1010 M ). Using the orbit ...
Slide 1
... • Typical time scale for a stellar event is 1 to 2 months. • If the ’lens’ star has a planet, its gravity may also contribute to lensing the light from the ’source’. • This produces a secondary peak in the light curve. • Typical exoplanetary deviation lasts only hours to days. ...
... • Typical time scale for a stellar event is 1 to 2 months. • If the ’lens’ star has a planet, its gravity may also contribute to lensing the light from the ’source’. • This produces a secondary peak in the light curve. • Typical exoplanetary deviation lasts only hours to days. ...
Why are Binary Stars so Important for the Theory
... filters far from being monochromatic; often the instrumental systems are badly defined. Those of us who do stellar-evolution calculations are left with the feeling that the hundred thousands of observations of eclipsing binaries scattered through the Iiterature are of very Iittle val ue to uso ...
... filters far from being monochromatic; often the instrumental systems are badly defined. Those of us who do stellar-evolution calculations are left with the feeling that the hundred thousands of observations of eclipsing binaries scattered through the Iiterature are of very Iittle val ue to uso ...
The Death of a Low Mass Star
... – The nebulae in the previous slides are estimated to be only a few thousand years old – The material rapidly disperses, leaving the central core ...
... – The nebulae in the previous slides are estimated to be only a few thousand years old – The material rapidly disperses, leaving the central core ...
Star Show FACILITATOR NOTES
... chemical and nuclear reactions, by light waves and other radiations, and in many other ways. However, it can never be destroyed. As these transfers occur, the matter involved becomes steadily less ordered. (9-12) Interactions of Energy and Matter --- Electromagnetic waves result when a charged objec ...
... chemical and nuclear reactions, by light waves and other radiations, and in many other ways. However, it can never be destroyed. As these transfers occur, the matter involved becomes steadily less ordered. (9-12) Interactions of Energy and Matter --- Electromagnetic waves result when a charged objec ...
Lecture 10: The Milky Way
... We live in a galaxy that has three major components of different ages and metallicities. Disc (thin+thick) – about 25kpc in radius, only about 1kpc thick. Most of the stars are young (0-8 Gyr), and have about the same metal content as the Sun. Total stellar mass of about 6x1010M. Bulge – a mostly o ...
... We live in a galaxy that has three major components of different ages and metallicities. Disc (thin+thick) – about 25kpc in radius, only about 1kpc thick. Most of the stars are young (0-8 Gyr), and have about the same metal content as the Sun. Total stellar mass of about 6x1010M. Bulge – a mostly o ...
29.2 Measuring the Stars - Mr. Tobin`s Earth Science Class
... stars including Sun (which is at the center because it has an average temperature and luminosity.) • Stars here fuse hydrogen. • As hydrogen runs out stars fuse helium ...
... stars including Sun (which is at the center because it has an average temperature and luminosity.) • Stars here fuse hydrogen. • As hydrogen runs out stars fuse helium ...
Cosmology questions (Introduction)
... The Drake equation is used to estimate how many advanced civilizations might evolve in a Galaxy of similar size as the Milky Way. The answers vary, but suggest about 40 million civilizations at any one time is possible. Assuming the planets upon which each civilization lives are evenly spread throug ...
... The Drake equation is used to estimate how many advanced civilizations might evolve in a Galaxy of similar size as the Milky Way. The answers vary, but suggest about 40 million civilizations at any one time is possible. Assuming the planets upon which each civilization lives are evenly spread throug ...
Mr. Scharff
... Introduction. The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were al the same distance away. Rather than speak of the ...
... Introduction. The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were al the same distance away. Rather than speak of the ...
Analyzing Spectra
... star's atmosphere. As light emitted from a star passes through the star's atmosphere, some of it is absorbed by elements in the atmosphere. The wavelengths of the light that are absorbed appear as dark lines in the spectrum. Each element absorbs certain wavelengths, producing a certain pattern of da ...
... star's atmosphere. As light emitted from a star passes through the star's atmosphere, some of it is absorbed by elements in the atmosphere. The wavelengths of the light that are absorbed appear as dark lines in the spectrum. Each element absorbs certain wavelengths, producing a certain pattern of da ...
