Star Life Cycle
... When a star has burned between 10% and 20% of its hydrogen, its core will to run out of fuel. At this stage, the star is entering the end of its life. The diameter of the star can increase by a factor of 200, while its cooling is translated into a reddening of its radiation : the star is becoming wh ...
... When a star has burned between 10% and 20% of its hydrogen, its core will to run out of fuel. At this stage, the star is entering the end of its life. The diameter of the star can increase by a factor of 200, while its cooling is translated into a reddening of its radiation : the star is becoming wh ...
red shift blue shift
... Continuum (continuous spectrum) produced in the core. Sun’s outer layers (photosphere) are much cooler than the core. Spectral lines produced in the outer layers of the sun. ...
... Continuum (continuous spectrum) produced in the core. Sun’s outer layers (photosphere) are much cooler than the core. Spectral lines produced in the outer layers of the sun. ...
International Reporter, India 07-24-06 A Glimpse at the Future of Our Sun
... envelopes, or even planets. “The typical belief is that stars have to be symmetric gas balls,” said Ragland, an interferometer specialist. “But 30 percent of these red giants showed asymmetry, which has implications for the last stages of stellar evolution, when stars like the Sun are evolving into ...
... envelopes, or even planets. “The typical belief is that stars have to be symmetric gas balls,” said Ragland, an interferometer specialist. “But 30 percent of these red giants showed asymmetry, which has implications for the last stages of stellar evolution, when stars like the Sun are evolving into ...
The Association of Dust Disks and Planets Lynne Hillenbrand (Caltech) P.I.
... younger stars can pose a challenge to precision Doppler work due to the enhanced starspot and plage magnetic activity of their photospheres that causes a velocity “jitter”, acting as noise in the Doppler measurements. For FGK stars there is decreasing jitter towards later spectral types (e.g. Santos ...
... younger stars can pose a challenge to precision Doppler work due to the enhanced starspot and plage magnetic activity of their photospheres that causes a velocity “jitter”, acting as noise in the Doppler measurements. For FGK stars there is decreasing jitter towards later spectral types (e.g. Santos ...
The Properties of Stars
... sequence and then moves off the sequence when it runs out of fuel. • How long it stays on the main sequence and where it moves to depends on size. ...
... sequence and then moves off the sequence when it runs out of fuel. • How long it stays on the main sequence and where it moves to depends on size. ...
Spring 2014 Astronomy Exam Study Guide (Co-Taught)
... 43. In Main Sequence stars, what is the relationship between brightness and temperature? 44. What does the apparent brightness, or luminosity, of an object such as a star depend on? 45. Explain the difference between apparent luminosity and absolute luminosity. 46. In what ways is energy transported ...
... 43. In Main Sequence stars, what is the relationship between brightness and temperature? 44. What does the apparent brightness, or luminosity, of an object such as a star depend on? 45. Explain the difference between apparent luminosity and absolute luminosity. 46. In what ways is energy transported ...
Development of the Modern “World View”
... technology of telescopes and new theoretical information (an explanation of orbits provided by Kepler) became known. ...
... technology of telescopes and new theoretical information (an explanation of orbits provided by Kepler) became known. ...
PHYS 2410 General Astronomy Homework 5
... Use the following chart to answer the next two questions: ...
... Use the following chart to answer the next two questions: ...
Stellar Evolution and the Herzsprung-Russell Diagram
... • Details depend sensitively on total mass: consider “low mass” stars like the sun, and “high mass” stars over 8 Msun. • “Very low mass” stars end their lives after the main sequence with no further nuclear fuels. • Post-M-S evolution may last 1/10 as long as M-S did • (Sun: 1 billion vs. 10 billion ...
... • Details depend sensitively on total mass: consider “low mass” stars like the sun, and “high mass” stars over 8 Msun. • “Very low mass” stars end their lives after the main sequence with no further nuclear fuels. • Post-M-S evolution may last 1/10 as long as M-S did • (Sun: 1 billion vs. 10 billion ...
Largest mountain in solar system
... Methane atomosphere 164 years to orbit -250c temps 30 times farther from the sun than Earth ...
... Methane atomosphere 164 years to orbit -250c temps 30 times farther from the sun than Earth ...
The Milky Way
... • These units contain a LOT more material than what we actually went over in class. • You ARE responsible for understanding the topics covered in class (including details in the book that I may not have mentioned). • You are NOT responsible for other stuff in these chapters not covered at all in lec ...
... • These units contain a LOT more material than what we actually went over in class. • You ARE responsible for understanding the topics covered in class (including details in the book that I may not have mentioned). • You are NOT responsible for other stuff in these chapters not covered at all in lec ...
Extrasolar Planets = 403
... Common orbital and rotation direction & plane => nebular disk Jovian / Terrestrial => range of temperatures in disk Common ages => simultaneous formation in disk Problems: Speed of Jupiter’s formation, angular momentum, ...
... Common orbital and rotation direction & plane => nebular disk Jovian / Terrestrial => range of temperatures in disk Common ages => simultaneous formation in disk Problems: Speed of Jupiter’s formation, angular momentum, ...
The Evolution of Low Mass Stars
... overcome electron degeneracy, and it would collapse and become an even denser and more compact object, either called a neutron star or a black hole. ...
... overcome electron degeneracy, and it would collapse and become an even denser and more compact object, either called a neutron star or a black hole. ...
Extension worksheet – Topic 6 - Cambridge Resources for the IB
... Outline what may be deduced about a star by a study of its spectrum. ...
... Outline what may be deduced about a star by a study of its spectrum. ...
ph709-15-testrevision
... CONFIRMATION: In general, the detection of three successive transits will be necessary for a confirmed detection, which will limit confirmed planetary-radius objects to about 1.5 AU. DENSITIES: The first confirmed transiting planets observed were all more massive than Saturn, have orbital periods of ...
... CONFIRMATION: In general, the detection of three successive transits will be necessary for a confirmed detection, which will limit confirmed planetary-radius objects to about 1.5 AU. DENSITIES: The first confirmed transiting planets observed were all more massive than Saturn, have orbital periods of ...
Key Stage 2: Teacher`s Pack
... 8. What happens to your pupil when the light goes dimmer? It gets bigger An extension question you could ask at this point: How does your pupil getting bigger in dim light explain why the Lovell telescope at Jodrell Bank needs to be so big? You pupil gets bigger to collect more light, so you can see ...
... 8. What happens to your pupil when the light goes dimmer? It gets bigger An extension question you could ask at this point: How does your pupil getting bigger in dim light explain why the Lovell telescope at Jodrell Bank needs to be so big? You pupil gets bigger to collect more light, so you can see ...
Document
... have the mass of more than 1 Million Suns put together. Stellar Black Holes are formed when the center of a very large star collapses and forms a supernova. The Earth will never be destroyed by a Black Hole. 1. www.nasa.gov 2. www.desura.com ...
... have the mass of more than 1 Million Suns put together. Stellar Black Holes are formed when the center of a very large star collapses and forms a supernova. The Earth will never be destroyed by a Black Hole. 1. www.nasa.gov 2. www.desura.com ...