2.7 - 2.9a
... include the Milky Way (our galaxy) all have a central nucleus have long curved arms contain a lot of gas and dust ...
... include the Milky Way (our galaxy) all have a central nucleus have long curved arms contain a lot of gas and dust ...
Grade 6 Standard 4 - Murray School District
... B. They are equal distances from the Sun. C. They are different distances from the Earth. D. They are all in different galaxies. 9. If 2 stars give off equal amounts of light, why would one look brighter? A. It is revolving with Earth around the Sun. B. It is closer to the Earth. C. It is a black ho ...
... B. They are equal distances from the Sun. C. They are different distances from the Earth. D. They are all in different galaxies. 9. If 2 stars give off equal amounts of light, why would one look brighter? A. It is revolving with Earth around the Sun. B. It is closer to the Earth. C. It is a black ho ...
Interactive Vocabulary Review for Outer Space Indicator
... A natural, luminous, celestial body is better known as a STAR! ...
... A natural, luminous, celestial body is better known as a STAR! ...
Unit 3: Understanding the Universe
... What is the Milky Way, and how is it related to the solar system using a model to describe the role of gravity? ...
... What is the Milky Way, and how is it related to the solar system using a model to describe the role of gravity? ...
Stars
... Nebulae – clouds of dust, gas, and thinly scattered matter • Stars and planets form from this interstellar matter 1. Nebulae begin to contract – Gravity squeezes particles in the nebula towards the center – Nebula shrinks – Gravitational energy is converted into heat energy ...
... Nebulae – clouds of dust, gas, and thinly scattered matter • Stars and planets form from this interstellar matter 1. Nebulae begin to contract – Gravity squeezes particles in the nebula towards the center – Nebula shrinks – Gravitational energy is converted into heat energy ...
The Milky Way Galaxy
... kiloparsecs (kpc). • Most of the stars are found near the galactic plane. • Globular clusters are found above and below the plane. ...
... kiloparsecs (kpc). • Most of the stars are found near the galactic plane. • Globular clusters are found above and below the plane. ...
Star Questions 2008 - Fort Thomas Independent Schools
... See the Nebular Theory, chapter 5. Stars form from the dust and gases of a cold nebula. Compression event causes the matter to move and rotate, gravitational attraction causes the matter to clump, continued gravitational collapse increases the mass and temperature until a protostar develops. If grea ...
... See the Nebular Theory, chapter 5. Stars form from the dust and gases of a cold nebula. Compression event causes the matter to move and rotate, gravitational attraction causes the matter to clump, continued gravitational collapse increases the mass and temperature until a protostar develops. If grea ...
Set 1
... constant. If the IMF (M) is invariant, obtain an expression for the observed number of stars of a given mass at time t in terms of its main sequence lifetime. Comment briefly on the differences you would expect to see in the H-R diagrams of a population where = 0.1 Gyr and = for a population ...
... constant. If the IMF (M) is invariant, obtain an expression for the observed number of stars of a given mass at time t in terms of its main sequence lifetime. Comment briefly on the differences you would expect to see in the H-R diagrams of a population where = 0.1 Gyr and = for a population ...
1 au d p = 1 au d
... Starting from the observed luminosity function, possible to derive an estimate for the Initial Mass Function (IMF). To define the IMF, imagine that we form a large number of stars. Then: the number of stars that have been x (M)DM = born with initial masses between M and M+DM (careful not to confuse ...
... Starting from the observed luminosity function, possible to derive an estimate for the Initial Mass Function (IMF). To define the IMF, imagine that we form a large number of stars. Then: the number of stars that have been x (M)DM = born with initial masses between M and M+DM (careful not to confuse ...
Lecture11
... A star becomes a red giant after the fusion of hydrogen into helium in its core has come to an end. As the red giant’s core shrinks and heats up, a new cycle of reactions can occur that create the even heavier elements carbon and oxygen. ...
... A star becomes a red giant after the fusion of hydrogen into helium in its core has come to an end. As the red giant’s core shrinks and heats up, a new cycle of reactions can occur that create the even heavier elements carbon and oxygen. ...
Star Cycle2013
... fuse it together. You actually end up with less energy than you started with! So instead of generating pressure to hold up the outer layers, the iron fusion actually takes it out of the core. Thus, there is nothing left to combat gravity from the outer layers. ...
... fuse it together. You actually end up with less energy than you started with! So instead of generating pressure to hold up the outer layers, the iron fusion actually takes it out of the core. Thus, there is nothing left to combat gravity from the outer layers. ...
Stars and their Properties
... Proper Motion is the measurement of a star’s physical motion Must be measured in parallel with Parallax o The Moving Cluster Method – Stars converge to a central point if you are moving backwards in space at very high speed – Used to 1,000 parsecs Sun is not in a star cluster Convergent Poin ...
... Proper Motion is the measurement of a star’s physical motion Must be measured in parallel with Parallax o The Moving Cluster Method – Stars converge to a central point if you are moving backwards in space at very high speed – Used to 1,000 parsecs Sun is not in a star cluster Convergent Poin ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... • Heats their outer layers that expand • The expanded gas cools and pressure drops • Gravity then recompresses the gas ...
... • Heats their outer layers that expand • The expanded gas cools and pressure drops • Gravity then recompresses the gas ...
File
... • Soon core helium is used up, leaving carbon and oxygen ashes behind. • Now there are two burning shells, helium and hydrogen. • Again the atmosphere expands and the star becomes a red giant for the second time. ...
... • Soon core helium is used up, leaving carbon and oxygen ashes behind. • Now there are two burning shells, helium and hydrogen. • Again the atmosphere expands and the star becomes a red giant for the second time. ...
3 rd stage of a star`s life = red giant
... Small, hot star made from the leftover core of a star ...
... Small, hot star made from the leftover core of a star ...
Star Formation
... A protostar’s mass will determine the star’s: ∴Position on - temperature (Spectral Class) Main Sequence - luminosity (Absolute Magnitude) - length of protostar stage (in fact, all stages) A star’s evolution depends on how massive it is: Low Mass (0.08 MSuns < M < 2 MSuns) Intermediate Mass (2 MSuns ...
... A protostar’s mass will determine the star’s: ∴Position on - temperature (Spectral Class) Main Sequence - luminosity (Absolute Magnitude) - length of protostar stage (in fact, all stages) A star’s evolution depends on how massive it is: Low Mass (0.08 MSuns < M < 2 MSuns) Intermediate Mass (2 MSuns ...
Nuclear fusion in stars
... splits into two 4 He nuclei in only 2 ˆ 10´16 s. However, if the temperature and density are high enough, a third 4 He nucleus may fuse with the 8 Be before it decays. Typically this requires temperatures greater than 100 MK. Other reactions also occur, producing elements with greater atomic mass, u ...
... splits into two 4 He nuclei in only 2 ˆ 10´16 s. However, if the temperature and density are high enough, a third 4 He nucleus may fuse with the 8 Be before it decays. Typically this requires temperatures greater than 100 MK. Other reactions also occur, producing elements with greater atomic mass, u ...
