Fingerprints in Starlight: Spectroscopy of Stars Inquiry Questions
... Spectral class, distance, temperature, age, chemical composition, mass, radial velocity, rotational velocity, expansion or contraction, ionization level, luminosity, magnetic fields, spectroscopic binary systems, emission nebulae, interstellar absorption lines and more. 8. Are all elements found in ...
... Spectral class, distance, temperature, age, chemical composition, mass, radial velocity, rotational velocity, expansion or contraction, ionization level, luminosity, magnetic fields, spectroscopic binary systems, emission nebulae, interstellar absorption lines and more. 8. Are all elements found in ...
Slide 1
... • As they ‘fall’ inwards, they move faster (gravitational potential energy is being converted to kinetic energy) • The particles collide with each other, sharing their energy • The fastest particles are at the centre of the cloud (they have fallen the furthest), and fast-moving particles mean a high ...
... • As they ‘fall’ inwards, they move faster (gravitational potential energy is being converted to kinetic energy) • The particles collide with each other, sharing their energy • The fastest particles are at the centre of the cloud (they have fallen the furthest), and fast-moving particles mean a high ...
Russell Diagram
... A binary star system consists of one star that is twice as massive as the other. They are 2.0 AU apart and have an orbit period of 0.50 y. What is the mass of the smaller star in terms of solar masses? ...
... A binary star system consists of one star that is twice as massive as the other. They are 2.0 AU apart and have an orbit period of 0.50 y. What is the mass of the smaller star in terms of solar masses? ...
Evolution Cycle of Stars
... • Cepheid Variables may not be permanently variable; the fluctuations may just be an unstable phase the star is going through. ...
... • Cepheid Variables may not be permanently variable; the fluctuations may just be an unstable phase the star is going through. ...
Binary Stars
... mass. Each one has a strong influence on the other, and they both move perceptibly. (It’s not like a tiny satellite going around the huge Earth.) ...
... mass. Each one has a strong influence on the other, and they both move perceptibly. (It’s not like a tiny satellite going around the huge Earth.) ...
slides
... Neutron stars rotate very rapidly due to the conservation of angular momentum (the current record-holder is 716 times per second). They can also emit pulses of radio waves every time the rotate. ...
... Neutron stars rotate very rapidly due to the conservation of angular momentum (the current record-holder is 716 times per second). They can also emit pulses of radio waves every time the rotate. ...
_____ 1. Which of the following statements is NOT true about stars
... ___________________ once it has used up all of its hydrogen. The center of the star will _________________ as the atmosphere begins to grow large. The mass of the star will determine if it will be a red giant or a supergiant. 11. What is the difference between a red giant and a supergiant? _________ ...
... ___________________ once it has used up all of its hydrogen. The center of the star will _________________ as the atmosphere begins to grow large. The mass of the star will determine if it will be a red giant or a supergiant. 11. What is the difference between a red giant and a supergiant? _________ ...
The Life Cycle of Stars Webquest
... Click the link on the side of the page entitled Galaxies or http://www.seasky.org/celestialobjects/galaxies.html and answer the following questions: 1. How are galaxies defined? 2. What holds galaxies together? 3. Why is a galaxy called an oasis? 4. What is the name of our galaxy? 5. In what directi ...
... Click the link on the side of the page entitled Galaxies or http://www.seasky.org/celestialobjects/galaxies.html and answer the following questions: 1. How are galaxies defined? 2. What holds galaxies together? 3. Why is a galaxy called an oasis? 4. What is the name of our galaxy? 5. In what directi ...
Goals of the day Clickers Order of Magnitude Astronomy
... A radio message from outer space arrived today which was sent from planet Buff on the day you were born. The friendly aliens sending you the birthday message live: ...
... A radio message from outer space arrived today which was sent from planet Buff on the day you were born. The friendly aliens sending you the birthday message live: ...
Milky Way - Wayne Hu`s Tutorials
... • That much mass in that small a radius can plausibly only be a (supermassive) black hole • Note that this is an example of the general statement that masses are estimated by taking v2r (2πa)2 a 4π 2 a3 M≈ ...
... • That much mass in that small a radius can plausibly only be a (supermassive) black hole • Note that this is an example of the general statement that masses are estimated by taking v2r (2πa)2 a 4π 2 a3 M≈ ...
Lecture 12
... Hipparcos satellite: measured ~105 bright stars with errors also of ~0.001 arcsec GAIA satellite: will measure positions of ~109 stars with an accuracy of micro-arcsecs - this is a reasonable fraction of all the stars in the Milky Way! Currently: measure d accurately to ~100 pc ...
... Hipparcos satellite: measured ~105 bright stars with errors also of ~0.001 arcsec GAIA satellite: will measure positions of ~109 stars with an accuracy of micro-arcsecs - this is a reasonable fraction of all the stars in the Milky Way! Currently: measure d accurately to ~100 pc ...
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 ...
Chapter11
... Open Clusters of Stars Large masses of Giant Molecular Clouds => Stars do not form isolated, but in large groups, called Open Clusters of Stars. ...
... Open Clusters of Stars Large masses of Giant Molecular Clouds => Stars do not form isolated, but in large groups, called Open Clusters of Stars. ...
File
... 15. What does a spectra of a star tell an astronomer about a star? The composition of the star or the direction it’s moving. 16. Why does our Sun have a bright apparent magnitude but a dim absolute magnitude? Think what is the difference between apparent and absolute magnitude. It has a bright appar ...
... 15. What does a spectra of a star tell an astronomer about a star? The composition of the star or the direction it’s moving. 16. Why does our Sun have a bright apparent magnitude but a dim absolute magnitude? Think what is the difference between apparent and absolute magnitude. It has a bright appar ...
Homework #7 (Ch. 19)
... gravity continues to compress the gas and heat it until finally the core temperature reaches 10 million K, which is sufficient to initiate hydrogen fusion. The object is now a star. 3. Chaisson Review and Discussion 19.3 What is the role of rotation in the process of stellar birth? (3 points) As an ...
... gravity continues to compress the gas and heat it until finally the core temperature reaches 10 million K, which is sufficient to initiate hydrogen fusion. The object is now a star. 3. Chaisson Review and Discussion 19.3 What is the role of rotation in the process of stellar birth? (3 points) As an ...
Properties of Stars - Mr. Carter`s Earth
... The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of ...
... The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of ...
Nebulas & Stars
... bright masses of energy and light The name quasar is actually short for quasistellar radio source or quasi-stellar object Quasars are the brightest objects in our universe, although to see one through a telescope they do not look that bright at all Quasars are extremely ...
... bright masses of energy and light The name quasar is actually short for quasistellar radio source or quasi-stellar object Quasars are the brightest objects in our universe, although to see one through a telescope they do not look that bright at all Quasars are extremely ...
galaxy - 106Thursday130-430
... of this dark matter containing the major portion of the total galaxy mass and extending very far beyond the visible matter. Some indirect means suggest that the dark matter halo may extend as far as 100,000 parsecs from the center ...
... of this dark matter containing the major portion of the total galaxy mass and extending very far beyond the visible matter. Some indirect means suggest that the dark matter halo may extend as far as 100,000 parsecs from the center ...
Ch. 15 Notes
... • Irregular galaxies do not fit the other categories • These are small galaxies being distorted by gravity from other nearby galaxies ...
... • Irregular galaxies do not fit the other categories • These are small galaxies being distorted by gravity from other nearby galaxies ...
Conceptual Physics
... a. It is the "point of no return" of the black hole; anything closer than this point will not be able to escape the gravitational force of the black hole. b. The term is intended to emphasize the fact that an object can become a black hole only once, and a black hole cannot evolve into anything else ...
... a. It is the "point of no return" of the black hole; anything closer than this point will not be able to escape the gravitational force of the black hole. b. The term is intended to emphasize the fact that an object can become a black hole only once, and a black hole cannot evolve into anything else ...
HR Diagram
... 12. If scientists discovered a star in a distant galaxy, how could they determine what the star is made of? ...
... 12. If scientists discovered a star in a distant galaxy, how could they determine what the star is made of? ...
Stars & Constellations
... We see different constellations at different times of the year because the Earth orbits around the sun ...
... We see different constellations at different times of the year because the Earth orbits around the sun ...
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.