Mr - White Plains Public Schools
... There is a relationship between the temperatures of stars and how bright they are (luminosity). In general, the hotter a star the brighter. This is not always true though. For example, Polaris is the same temperature as our Sun, but is around 4000X brighter. This difference is due to the mass and si ...
... There is a relationship between the temperatures of stars and how bright they are (luminosity). In general, the hotter a star the brighter. This is not always true though. For example, Polaris is the same temperature as our Sun, but is around 4000X brighter. This difference is due to the mass and si ...
Standard EPS Shell Presentation
... temperature of the stars on the x-axis and the absolute brightness on the y-axis. ...
... temperature of the stars on the x-axis and the absolute brightness on the y-axis. ...
Supernova
... Supernova Remnants • The supernova core collapse is at 200 billion K. • The photons are energetic enough to break up iron nuclei. • The particles from the broken nuclei fuse with iron to create heavy elements. • This matter goes to form new ...
... Supernova Remnants • The supernova core collapse is at 200 billion K. • The photons are energetic enough to break up iron nuclei. • The particles from the broken nuclei fuse with iron to create heavy elements. • This matter goes to form new ...
Spring 2014 Astronomy Exam Study Guide (Co-Taught)
... 6. How does Einstein’s concept of gravity differ from Newton’s concept of gravity? 7. Is there a center to the Universe? If so, where is it? 8. What is a light year a measure of? 9. Our Sun obtains its energy through nuclear fusion. Which of the following elements are primarily involved in this reac ...
... 6. How does Einstein’s concept of gravity differ from Newton’s concept of gravity? 7. Is there a center to the Universe? If so, where is it? 8. What is a light year a measure of? 9. Our Sun obtains its energy through nuclear fusion. Which of the following elements are primarily involved in this reac ...
The Interstellar Medium and Star Formation
... planets. Some planets become massive enough to also accumulate Hydrogen and Helium gas. • However, during and after formation, it seems that some planets are able to migrate in their disks, drifting inwards to settle close to the star. We do not know why this did not happen so much in our own Solar ...
... planets. Some planets become massive enough to also accumulate Hydrogen and Helium gas. • However, during and after formation, it seems that some planets are able to migrate in their disks, drifting inwards to settle close to the star. We do not know why this did not happen so much in our own Solar ...
PS 224, Fall 2014 HW 4
... 4. Homes to Civilization? We do not yet know how many stars have Earth-like planets, nor do we know the likelihood that such planets might harbor advanced civilizations like our own. However, some stars can probably be ruled out as candidates for advanced civilizations. For example, given that it to ...
... 4. Homes to Civilization? We do not yet know how many stars have Earth-like planets, nor do we know the likelihood that such planets might harbor advanced civilizations like our own. However, some stars can probably be ruled out as candidates for advanced civilizations. For example, given that it to ...
15compact2s
... Mass: Size: earth-sized (~13000 km diameter) Density: Supported by: electron degeneracy pressure Progenitor: Example: ...
... Mass: Size: earth-sized (~13000 km diameter) Density: Supported by: electron degeneracy pressure Progenitor: Example: ...
1 Star Formation and Main Sequence Evolution Condensation
... Formation of High Mass Stars 1. Form much faster due to stronger gravitational attraction 2. Move horizontally rather than diagonally onto the main sequence 3. Produce high luminosity stars at the top of the main sequence (mass-luminosity relation) ...
... Formation of High Mass Stars 1. Form much faster due to stronger gravitational attraction 2. Move horizontally rather than diagonally onto the main sequence 3. Produce high luminosity stars at the top of the main sequence (mass-luminosity relation) ...
Semester 1 Earth Science Gallery Review
... 5. What temperature is Sirius B? 6. This star is a red Giant. 7. What temperature is Bernard’s Star? 8. Which star is the dimmest (least bright) on the chart? 9. What category is the hottest star on the chart? 10. What color are the coolest stars? 11. What category of stars is hot but not very lumin ...
... 5. What temperature is Sirius B? 6. This star is a red Giant. 7. What temperature is Bernard’s Star? 8. Which star is the dimmest (least bright) on the chart? 9. What category is the hottest star on the chart? 10. What color are the coolest stars? 11. What category of stars is hot but not very lumin ...
astronomy timeline
... spectra of bright stars and found that the dark lines in their spectra matched the wavelengths of atoms measured in terrestrial laboratories. p. 366-367. ...
... spectra of bright stars and found that the dark lines in their spectra matched the wavelengths of atoms measured in terrestrial laboratories. p. 366-367. ...
Astronomy Practice Test
... D. December 14. In what month would K-W experience the same amount of light and dark hours A. January B. June C. September D. December 15. Which of the following statements best describes how the planets of the solar system formed? A. They are condensed rings of matter thrown off by the young Sun. B ...
... D. December 14. In what month would K-W experience the same amount of light and dark hours A. January B. June C. September D. December 15. Which of the following statements best describes how the planets of the solar system formed? A. They are condensed rings of matter thrown off by the young Sun. B ...
HR Diagram and Life of a star
... White Dwarfs- are the small, dense remains of low or medium mass stars. They are very hot, but dimmer then the main sequence stars of the same temperature. They are no longer producing energy or light, they are lit because of the remaining energy from the collapse of the original star. They will eve ...
... White Dwarfs- are the small, dense remains of low or medium mass stars. They are very hot, but dimmer then the main sequence stars of the same temperature. They are no longer producing energy or light, they are lit because of the remaining energy from the collapse of the original star. They will eve ...
Lesson 10 Red Shift
... vibrate faster have higher amounts of energy, and those that vibrate slower have lower amounts of energy). Although the electromagnetic spectrum comprises wavelengths from ultra high energy (and dangerous) gamma rays to ultra low energy radio waves, the only part that we can see is the very limited ...
... vibrate faster have higher amounts of energy, and those that vibrate slower have lower amounts of energy). Although the electromagnetic spectrum comprises wavelengths from ultra high energy (and dangerous) gamma rays to ultra low energy radio waves, the only part that we can see is the very limited ...
globular cluster - Harding University
... Cepheid variables close enough to measure their distance using direct parallax measurements. Distances to the Cepheid variables in our own galaxy were determined using statistical techniques, and were dependent upon these theoretical calculations. This situation recently changed with the Hipparcos s ...
... Cepheid variables close enough to measure their distance using direct parallax measurements. Distances to the Cepheid variables in our own galaxy were determined using statistical techniques, and were dependent upon these theoretical calculations. This situation recently changed with the Hipparcos s ...
File
... own axis 365.26 times per each orbit around the sun, which gives us 365 days in each year. In turn, the moon orbits the earth, affecting the ocean tides, and slowing the Earth’s rotation with its gravity. The Earth and its solar system are part of a bigger area of space called the Milky Way galaxy. ...
... own axis 365.26 times per each orbit around the sun, which gives us 365 days in each year. In turn, the moon orbits the earth, affecting the ocean tides, and slowing the Earth’s rotation with its gravity. The Earth and its solar system are part of a bigger area of space called the Milky Way galaxy. ...
1_Introduction
... Why do galaxies curdle into tiny stars, instead of remaining as homogenous gas clouds? ...
... Why do galaxies curdle into tiny stars, instead of remaining as homogenous gas clouds? ...
Formation of Stars
... UV and optical radiation. At the end of stage 2, the fragments are ~100 times the size of the solar system. Stage 3: The cloud fragment develops a hot core - from 100 K to 104 K. The gas density increases much faster in the core than at the surface. A photosphere develops. Size is about the size o ...
... UV and optical radiation. At the end of stage 2, the fragments are ~100 times the size of the solar system. Stage 3: The cloud fragment develops a hot core - from 100 K to 104 K. The gas density increases much faster in the core than at the surface. A photosphere develops. Size is about the size o ...
Cluster and Association Members
... cluster quite accurately, especially if we take the rather close distance of our given regime into account. The proper motions, for example, are significant and can be measured with high accuracy. Several new catalogues on this topic are now available (e.g., Dias et al. 2006). If we are able to estab ...
... cluster quite accurately, especially if we take the rather close distance of our given regime into account. The proper motions, for example, are significant and can be measured with high accuracy. Several new catalogues on this topic are now available (e.g., Dias et al. 2006). If we are able to estab ...
Stars and the Sun
... out from the next particles • In the Radiation zone – Energy moves slowly • Between the Radiation zone and the Convection zone is the Tachocline – a shear zone, the convection zone has fast moving ...
... out from the next particles • In the Radiation zone – Energy moves slowly • Between the Radiation zone and the Convection zone is the Tachocline – a shear zone, the convection zone has fast moving ...
General Astronomy - Stockton University
... slightly less than escape velocity; if there is a slight eruption, a cloud of hydrogen escapes. – The type star, γ Cas is the brightest of the class, but it includes other well-known stars, such as Pleione (also known as BU Tau) in the Pleiades cluster. Frequent ejections of material have created a ...
... slightly less than escape velocity; if there is a slight eruption, a cloud of hydrogen escapes. – The type star, γ Cas is the brightest of the class, but it includes other well-known stars, such as Pleione (also known as BU Tau) in the Pleiades cluster. Frequent ejections of material have created a ...
Star Formation
... Open Cluster: Group of ~hundreds youngish stars formed at same time from same molecular cloud - Association-tens of young stars not gravitationally bound together ...
... Open Cluster: Group of ~hundreds youngish stars formed at same time from same molecular cloud - Association-tens of young stars not gravitationally bound together ...
Measuring Distance in our Universe. Due Tue 1 Dec 2009 Imagine
... minutes to get to the Sun from Earth. To get to the next nearest star, Proxima Centauri, it would take 4.2 years traveling at the speed of light. Distances on earth are often measured in kilometers but distances to the stars are so large that kilometers aren’t very practical units. Astronomers use t ...
... minutes to get to the Sun from Earth. To get to the next nearest star, Proxima Centauri, it would take 4.2 years traveling at the speed of light. Distances on earth are often measured in kilometers but distances to the stars are so large that kilometers aren’t very practical units. Astronomers use t ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.