Astronomy Triemester Review Sheet 2015
... 1. Describe how the solar system formed? 2. When was the solar system formed? How does the age of the solar system compare to the age of the Universe? 3. What are the most common elements in the Universe? Why? 4. What is the most widely accepted theory regarding the formation of the Universe? 5. Exp ...
... 1. Describe how the solar system formed? 2. When was the solar system formed? How does the age of the solar system compare to the age of the Universe? 3. What are the most common elements in the Universe? Why? 4. What is the most widely accepted theory regarding the formation of the Universe? 5. Exp ...
Characteristics of Stars
... they imagined that groups of stars formed pictures of people or animals. Today, we call these imaginary patterns of stars constellations. Astronomers classify stars according to their physical characteristics. Characteristics used to classify stars include color, temperature, size, composition, and ...
... they imagined that groups of stars formed pictures of people or animals. Today, we call these imaginary patterns of stars constellations. Astronomers classify stars according to their physical characteristics. Characteristics used to classify stars include color, temperature, size, composition, and ...
Nuclear Physics
... Since this reaction chain is not occurring in the Sun, we have not reported on any reaction times here since they are very temperature dependent. ...
... Since this reaction chain is not occurring in the Sun, we have not reported on any reaction times here since they are very temperature dependent. ...
Astronomy Unit - rachaelreeves
... Computer connected to projector participation Are there different types of Observation of ...
... Computer connected to projector participation Are there different types of Observation of ...
Answers - CyberCoupons.com
... A. The object being dated exists in a closed system B. The initial conditions of the object being dated are known C. The object being dated exists in an open system D. The object being dated has had a constant rate of decay 6. True or False? By taking rocks that are known to have been formed in the ...
... A. The object being dated exists in a closed system B. The initial conditions of the object being dated are known C. The object being dated exists in an open system D. The object being dated has had a constant rate of decay 6. True or False? By taking rocks that are known to have been formed in the ...
The Milky Way
... The space between the stars is not completely empty, but filled with very dilute gas and dust, producing some of the most beautiful objects in the sky. We are interested in the interstellar medium because… a) dense interstellar clouds are the birth place of stars b) Dark clouds alter and absorb the ...
... The space between the stars is not completely empty, but filled with very dilute gas and dust, producing some of the most beautiful objects in the sky. We are interested in the interstellar medium because… a) dense interstellar clouds are the birth place of stars b) Dark clouds alter and absorb the ...
Gravity, General Relativity, and Dark Matter
... Both Newton’s and Einstein’s theories aptly describe how apples fall toward the Earth and planets go around the Sun. How do we decide if one is right and the other is wrong? Like a good detective or scientist, we need additional evidence. What experiment can we do where general relativity predicts a ...
... Both Newton’s and Einstein’s theories aptly describe how apples fall toward the Earth and planets go around the Sun. How do we decide if one is right and the other is wrong? Like a good detective or scientist, we need additional evidence. What experiment can we do where general relativity predicts a ...
Star Formation in Our Galaxy - Wiley-VCH
... interstellar dust grains. These particles efficiently absorb light with wavelengths smaller than their diameters (about 0.1 µm) and reradiate this energy into the infrared. Regions where the dust effectively blocks the light from background stars are traditionally known as dark clouds. Generally, th ...
... interstellar dust grains. These particles efficiently absorb light with wavelengths smaller than their diameters (about 0.1 µm) and reradiate this energy into the infrared. Regions where the dust effectively blocks the light from background stars are traditionally known as dark clouds. Generally, th ...
Astronomy 122 mid Term Exam
... Here is an example that got ½ credit – again even though it’s not even close to correct: “You determine the age by looking at the stars around it. Since they are in a stellar cluster they are the same age. The age of the star is 2 times the age of the Sun.” Or “The most massive star still on the mai ...
... Here is an example that got ½ credit – again even though it’s not even close to correct: “You determine the age by looking at the stars around it. Since they are in a stellar cluster they are the same age. The age of the star is 2 times the age of the Sun.” Or “The most massive star still on the mai ...
lab 11 only - Penn State University
... spherical cloud of stars that surrounds the entire galaxy). The halo is much larger than the bulge. Our Milky Way Galaxy is made up of mostly stars, gas, and dust. The dust blocks out light from distant stars, and makes it hard to see a lot of the galaxy, especially the bulge and parts of the disk. ...
... spherical cloud of stars that surrounds the entire galaxy). The halo is much larger than the bulge. Our Milky Way Galaxy is made up of mostly stars, gas, and dust. The dust blocks out light from distant stars, and makes it hard to see a lot of the galaxy, especially the bulge and parts of the disk. ...
– 1 – 1. Cosmochronology
... capture, β-decay, and fission properties of unstable isotopes of heavy elements far from the valley of stability. A major uncertainty lies in the adopted nuclear mass fomula. Another is what happens to the extremely heavy unstable isotopes formed, those even heavier than uranium ? The usual assumpti ...
... capture, β-decay, and fission properties of unstable isotopes of heavy elements far from the valley of stability. A major uncertainty lies in the adopted nuclear mass fomula. Another is what happens to the extremely heavy unstable isotopes formed, those even heavier than uranium ? The usual assumpti ...
The cosmic distance scale
... distances much further away than the Virgo cluster (and we do!). We would need a type of object that is much brighter than a Cepheid that also has a known absolute magnitude so that we know how much light is emitted. Type Ia supernovae1 are very bright, in fact about 14 magnitudes brighter than Ceph ...
... distances much further away than the Virgo cluster (and we do!). We would need a type of object that is much brighter than a Cepheid that also has a known absolute magnitude so that we know how much light is emitted. Type Ia supernovae1 are very bright, in fact about 14 magnitudes brighter than Ceph ...
Physivd Preliminary Module 8.5 The Cosmic Engine
... State that the life path a star takes depends on its mass. Briefly describe the main stages and time spent in each stage in a star’s life for the following masses: <0.1: formation of brown dwarf 0.5-2: protostar t-tauri main sequence red giant ...
... State that the life path a star takes depends on its mass. Briefly describe the main stages and time spent in each stage in a star’s life for the following masses: <0.1: formation of brown dwarf 0.5-2: protostar t-tauri main sequence red giant ...
Active Galaxies
... DeRobertis & Yee 1988). May be that minor mergers are more important than major mergers for instigating AGN. •Generally, luminous AGN tend to be in denser than average environments and low-luminosity AGN in normal/slightly dense environments. ...
... DeRobertis & Yee 1988). May be that minor mergers are more important than major mergers for instigating AGN. •Generally, luminous AGN tend to be in denser than average environments and low-luminosity AGN in normal/slightly dense environments. ...
Birth of Stars - High Energy Physics at Wayne State
... Basics About Stars (Table 20.1) Stable (main-sequence) stars maintain equilibrium by producing energy through nuclear fusion in their cores. Generating energy by fusion defines a star. Hydrogen is being converted to helium, but eventually the supply of hydrogen will run out. Stars range in mass fro ...
... Basics About Stars (Table 20.1) Stable (main-sequence) stars maintain equilibrium by producing energy through nuclear fusion in their cores. Generating energy by fusion defines a star. Hydrogen is being converted to helium, but eventually the supply of hydrogen will run out. Stars range in mass fro ...
Lecture 8a Star Formation 10/15/2014
... overall brightness scale of a specific class of star, then measuring the spectrum can be used to give the distance for stars > 500 LY away 1. Determine Surface Temperature + spectral class of star 2. Determine where on HR diagram should go 3. Read off absolute luminosity from HR diagram 4. Measure a ...
... overall brightness scale of a specific class of star, then measuring the spectrum can be used to give the distance for stars > 500 LY away 1. Determine Surface Temperature + spectral class of star 2. Determine where on HR diagram should go 3. Read off absolute luminosity from HR diagram 4. Measure a ...
Astronomy Curriculum
... 2. Describe the results of infrared, radio, and gamma ray observations of the Milky Way Galaxy. 3. Explain the spiral structure of the Milky Way Galaxy. B. Types of Galaxies and Interstellar Medium (Chapters 33 – 34) 1. Describe interstellar space and the materials found there. 2. Summarize the char ...
... 2. Describe the results of infrared, radio, and gamma ray observations of the Milky Way Galaxy. 3. Explain the spiral structure of the Milky Way Galaxy. B. Types of Galaxies and Interstellar Medium (Chapters 33 – 34) 1. Describe interstellar space and the materials found there. 2. Summarize the char ...
Black Hole Accretion
... Just because our theory/equations (GR) give BH solutions, should we believe that BHs actually do exist? Surely, Nature must have some trick up her sleeve to avoid forming BHs Many great scientists (even Chandrasekhar himself for a while?) have wondered However… ...
... Just because our theory/equations (GR) give BH solutions, should we believe that BHs actually do exist? Surely, Nature must have some trick up her sleeve to avoid forming BHs Many great scientists (even Chandrasekhar himself for a while?) have wondered However… ...
Contents ISP 205 Section 2 Study Guide for Test 3 28 March 2007
... o Giants burn hydrogen in a shell, helium, or other elements White dwarfs are earth-sized, dead stars. Main sequence is a mass sequence o O stars are massive o M stars have least mass Hot massive stars live a short life and cool stars live a long time o Lifetime=mass/luminosity o Comparison: If sun ...
... o Giants burn hydrogen in a shell, helium, or other elements White dwarfs are earth-sized, dead stars. Main sequence is a mass sequence o O stars are massive o M stars have least mass Hot massive stars live a short life and cool stars live a long time o Lifetime=mass/luminosity o Comparison: If sun ...
Determining the Sizes & Distances of Stars Using the H
... Stars are born with a wide variety of mass. The most massive stars are 100 times more massive than the Sun while the least massive ones are only 0.08 times the mass of the Sun. Most stars spend about 90% of their lifetimes shining due to nuclear fusion that goes on in their cores, but after awhile t ...
... Stars are born with a wide variety of mass. The most massive stars are 100 times more massive than the Sun while the least massive ones are only 0.08 times the mass of the Sun. Most stars spend about 90% of their lifetimes shining due to nuclear fusion that goes on in their cores, but after awhile t ...
5.1 Introduction and Definitions
... cloud, the energy released by the thermonuclear reactions taking place in the core of the star during its lifetime and, once thermonuclear reactions stop altogether, the energy released by the cooling of the star’s interior, as is the case in white dwarfs. The photons collected by our telescopes car ...
... cloud, the energy released by the thermonuclear reactions taking place in the core of the star during its lifetime and, once thermonuclear reactions stop altogether, the energy released by the cooling of the star’s interior, as is the case in white dwarfs. The photons collected by our telescopes car ...
ACTIVE GALAXIES
... either side of the galaxy • Radio source sizes often 300 kpc or more --- much bigger than their host galaxies. • Head-tail radio galaxies arise when jets are bent by the ram-pressure of gas as the host galaxy moves through it. ...
... either side of the galaxy • Radio source sizes often 300 kpc or more --- much bigger than their host galaxies. • Head-tail radio galaxies arise when jets are bent by the ram-pressure of gas as the host galaxy moves through it. ...