The Life Cycle of a Star and the Hertzsprung
... stars of different ages and in different stages, all at the same time. It is also a great tool to check your understanding of the star life cycle. In the Hertzsprung-Russell (HR) Diagram, each star is represented by a dot. There are lots of stars out there, so there are lots of dots. The position of ...
... stars of different ages and in different stages, all at the same time. It is also a great tool to check your understanding of the star life cycle. In the Hertzsprung-Russell (HR) Diagram, each star is represented by a dot. There are lots of stars out there, so there are lots of dots. The position of ...
Today`s Powerpoint
... Probably new molecular clouds form continually out of less dense gas. Some collapse under their own gravity. Others may be more stable. Magnetic fields and rotation also have some influence. Gravity makes cloud want to collapse. ...
... Probably new molecular clouds form continually out of less dense gas. Some collapse under their own gravity. Others may be more stable. Magnetic fields and rotation also have some influence. Gravity makes cloud want to collapse. ...
Epsilon Aurigae Mystery and Opportunity
... • During the 2003-2004 observing season this variation had sped up to 71 days. • In 2007-2008 the period became 65 days. ...
... • During the 2003-2004 observing season this variation had sped up to 71 days. • In 2007-2008 the period became 65 days. ...
Astronomy - Test 3
... E) Measuring the “turnoff point” where stars leave the main sequence 2. Why is it that hot plasma ejected from the Sun generally follows looping shapes? A) It is simply feeling the effects of gravity B) It is following magnetic field lines C) It is passing through holes drilled in the corona previou ...
... E) Measuring the “turnoff point” where stars leave the main sequence 2. Why is it that hot plasma ejected from the Sun generally follows looping shapes? A) It is simply feeling the effects of gravity B) It is following magnetic field lines C) It is passing through holes drilled in the corona previou ...
Star Formation
... Tarantula Nebula: if it was as close as the Orion Nebula it’d be as big as 60 full moons ...
... Tarantula Nebula: if it was as close as the Orion Nebula it’d be as big as 60 full moons ...
Eclipsing Binaries
... In the 1900s, scientists didn’t know why stars had different line strengths. Not knowing the physical reason, they just classified them from A to O. A-stars had the strongest hydrogen lines. O-stars the weakest. Later they found many classifications were actually the same ...
... In the 1900s, scientists didn’t know why stars had different line strengths. Not knowing the physical reason, they just classified them from A to O. A-stars had the strongest hydrogen lines. O-stars the weakest. Later they found many classifications were actually the same ...
Powerpoint for today
... 2. If you are in freefall, you are also weightless. Einstein says these are equivalent. So in freefall, the light and the ball also travel in straight lines. 3. Now imagine two people in freefall on Earth, passing a ball back and forth. From their perspective, they pass the ball in a straight line. ...
... 2. If you are in freefall, you are also weightless. Einstein says these are equivalent. So in freefall, the light and the ball also travel in straight lines. 3. Now imagine two people in freefall on Earth, passing a ball back and forth. From their perspective, they pass the ball in a straight line. ...
The Brightness of Stars
... Stars that are cool, ~3500K, will be reddish; stars that are hot, ~10,000K, will be white White light is a combination of all colors, so a hot star will appear brighter than a red star, all other things being equal, because not all light from a star is visible to the human eye – This fact obscures a ...
... Stars that are cool, ~3500K, will be reddish; stars that are hot, ~10,000K, will be white White light is a combination of all colors, so a hot star will appear brighter than a red star, all other things being equal, because not all light from a star is visible to the human eye – This fact obscures a ...
Phys133 Sample MidTerm #2 Covers Chs.10
... 4) What happens when a star exhausts its core hydrogen supply? A) It contracts, becoming hotter and brighter. B) Its core contracts, but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness. C) It expands, becoming bigger but dimmer. D) It contr ...
... 4) What happens when a star exhausts its core hydrogen supply? A) It contracts, becoming hotter and brighter. B) Its core contracts, but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness. C) It expands, becoming bigger but dimmer. D) It contr ...
Name - MIT
... B) It refers to any kind of instrument that can be hooked up to a telescope. C) It is an electronic detector that can be used in place of photographic film for taking images of the sky. D) It is a unit used by astronomers to measure angular resolution. E) It is the next telescope that will be launch ...
... B) It refers to any kind of instrument that can be hooked up to a telescope. C) It is an electronic detector that can be used in place of photographic film for taking images of the sky. D) It is a unit used by astronomers to measure angular resolution. E) It is the next telescope that will be launch ...
Can you write numbers in scientific notation
... Can you define the wave properties of light (wavelength, frequency, speed of light)? Do you understand how light can be described as a particle (photon)? Can you make the following calculations if you are given the equations? - energy of an individual photon - luminosity of a star - the wavelength o ...
... Can you define the wave properties of light (wavelength, frequency, speed of light)? Do you understand how light can be described as a particle (photon)? Can you make the following calculations if you are given the equations? - energy of an individual photon - luminosity of a star - the wavelength o ...
Planisphere Exercise
... In what direction does the celestial equator appear to “rise” and “set” as the night progresses? Do these directions ever change? Turn the star wheel to find out. ...
... In what direction does the celestial equator appear to “rise” and “set” as the night progresses? Do these directions ever change? Turn the star wheel to find out. ...
Star Formation
... 4) The collapsing gas becomes a young stellar object with an accretion disk and jets 4) When the young stellar object begins fusing hydrogen into helium it becomes a true star ...
... 4) The collapsing gas becomes a young stellar object with an accretion disk and jets 4) When the young stellar object begins fusing hydrogen into helium it becomes a true star ...
Astronomy Toolkit
... magnitude and the distance of a star, we can determine its luminosity • The star radiates light in all directions so that its emission is spread over a sphere • To find the intensity, I, of light from a star at the Earth (the intensity is the emission per unit area), divide the star’s luminosity by ...
... magnitude and the distance of a star, we can determine its luminosity • The star radiates light in all directions so that its emission is spread over a sphere • To find the intensity, I, of light from a star at the Earth (the intensity is the emission per unit area), divide the star’s luminosity by ...
Earth Science 25.2A : Stellar Evolution
... Eventually, all the usable nuclear fuel in these giants will be consumed. The sun, for example, will spend less than a billion years as a giant. ...
... Eventually, all the usable nuclear fuel in these giants will be consumed. The sun, for example, will spend less than a billion years as a giant. ...
ch 7 prob B
... communications satellites. Suppose the gas pressure inside Echo 1 was the same as the atmospheric pressure at Earth’s surface. If the total force exerted on the inner surface of Echo 1 was 2.86 x 108 N, what was the surface area of the satellite? Given that the surface area of a sphere is 4πr2, what ...
... communications satellites. Suppose the gas pressure inside Echo 1 was the same as the atmospheric pressure at Earth’s surface. If the total force exerted on the inner surface of Echo 1 was 2.86 x 108 N, what was the surface area of the satellite? Given that the surface area of a sphere is 4πr2, what ...
