04 Astrophysics_-_lesson_4 cosmology
... In 1960 two physicists, Dicke and Peebles, realising that there was more He than it could be produced by stars, proposed that in the beginning of the Universe it was at a sufficiently high temperature to produce He by fusion. In this process a great amount of highly energetic radiation was produced. ...
... In 1960 two physicists, Dicke and Peebles, realising that there was more He than it could be produced by stars, proposed that in the beginning of the Universe it was at a sufficiently high temperature to produce He by fusion. In this process a great amount of highly energetic radiation was produced. ...
General Astronomy - Stockton University
... We may imagine the enormously complicated situation of changing things we call the physical universe is a chess game played by the gods; we are not permitted to play, but we can watch. Our problem is that we are left to puzzle out the rules of the game for ourselves as best we can by watching the pl ...
... We may imagine the enormously complicated situation of changing things we call the physical universe is a chess game played by the gods; we are not permitted to play, but we can watch. Our problem is that we are left to puzzle out the rules of the game for ourselves as best we can by watching the pl ...
However the Big Bang theory had some competition…
... The Big Bang Theory To explain Hubble’s extraordinary discoveries about our expanding universe, astronomers came up with the Big Bang Theory. The Big Bang theory states that the whole universe started from a single tiny point that expanded rapidly in an explosion about 13 Billion years ago and is s ...
... The Big Bang Theory To explain Hubble’s extraordinary discoveries about our expanding universe, astronomers came up with the Big Bang Theory. The Big Bang theory states that the whole universe started from a single tiny point that expanded rapidly in an explosion about 13 Billion years ago and is s ...
Stars after the Main Sequence. Example: Betelgeuse (Alpha Orionis
... These compact cores exist….the white dwarf stars ...
... These compact cores exist….the white dwarf stars ...
Stellar life after the Main Sequence (cont.)
... Another planetary nebula: M27 (we saw it during the field trip) ...
... Another planetary nebula: M27 (we saw it during the field trip) ...
presentation (PPT format)
... have their own motions relative to one another thanks to their mutual gravitational attraction-for distant galaxies the Hubble speed is much greater than any intrinsic motions that the galaxies might have • The value of H0? Depends on the determination of the distance (vary depending on the techniqu ...
... have their own motions relative to one another thanks to their mutual gravitational attraction-for distant galaxies the Hubble speed is much greater than any intrinsic motions that the galaxies might have • The value of H0? Depends on the determination of the distance (vary depending on the techniqu ...
Hidden Stars Game
... Work with children in a small group, noting each child’s ability to count the stars with accuracy and say the amount using the cardinality principle (the last number counted represents the total). When children repeat the full count sequence, model the cardinality principle. For example, for four it ...
... Work with children in a small group, noting each child’s ability to count the stars with accuracy and say the amount using the cardinality principle (the last number counted represents the total). When children repeat the full count sequence, model the cardinality principle. For example, for four it ...
Introduction to the Universe
... the starlight appear to be in now? (A) Gamma ray (B) X ray (C) Ultraviolet (D) Infrared ...
... the starlight appear to be in now? (A) Gamma ray (B) X ray (C) Ultraviolet (D) Infrared ...
April - Bristol Astronomical Society
... Comet 73P Schwassmann-Wachmann is an interesting object as it is a comet that has broken into a number of pieces. The comet is predicted to brighten as the month progresses. It will start the month at 11.8 in the constellation of Boötes close to Arcturus. It rapidly moves through Corona Borealis pas ...
... Comet 73P Schwassmann-Wachmann is an interesting object as it is a comet that has broken into a number of pieces. The comet is predicted to brighten as the month progresses. It will start the month at 11.8 in the constellation of Boötes close to Arcturus. It rapidly moves through Corona Borealis pas ...
Stellar Lives (continued). Galaxies.
... The CNO cycle is the chain of reactions that leads to hydrogen fusion in high-mass stars. The escalated fusion rate of the CNO cycle produces many more photons than in low-mass stars. The photons have no mass, but carry momentum. They transfer the momentum to anything the run into. The result is rad ...
... The CNO cycle is the chain of reactions that leads to hydrogen fusion in high-mass stars. The escalated fusion rate of the CNO cycle produces many more photons than in low-mass stars. The photons have no mass, but carry momentum. They transfer the momentum to anything the run into. The result is rad ...
Size in Astronomy Often….angular size
... galaxy and can assume its actual diameter. Use the small angle formula to determine the distance to the galaxy in LY. Angle A = (D/d) x 206,265 A bit of Algebra manipulation is required! For one of the larger galaxies I get about ...
... galaxy and can assume its actual diameter. Use the small angle formula to determine the distance to the galaxy in LY. Angle A = (D/d) x 206,265 A bit of Algebra manipulation is required! For one of the larger galaxies I get about ...
From Rubber Bands to Big Bangs
... 1) Make one cut in you rubber band so that it makes a flat piece. 2) Draw a wave pattern from one end to the other end. 3) Place 4 stars randomly on the rubber band. Number each star starting with number one. 4) Now stretch the rubber band and describe: a) what happens to the distance between the st ...
... 1) Make one cut in you rubber band so that it makes a flat piece. 2) Draw a wave pattern from one end to the other end. 3) Place 4 stars randomly on the rubber band. Number each star starting with number one. 4) Now stretch the rubber band and describe: a) what happens to the distance between the st ...
From Rubber Bands to Big Bangs The Universe has been
... 1) Make one cut in you rubber band so that it makes a flat piece. 2) Draw a wave pattern from one end to the other end. 3) Place 4 stars randomly on the rubber band. Number each star starting with number one. 4) Now stretch the rubber band and describe: a) what happens to the distance between the st ...
... 1) Make one cut in you rubber band so that it makes a flat piece. 2) Draw a wave pattern from one end to the other end. 3) Place 4 stars randomly on the rubber band. Number each star starting with number one. 4) Now stretch the rubber band and describe: a) what happens to the distance between the st ...
ASTR 101 Scale of the Universe: an Overview
... 1014 solar masses So many galaxies are close together, some are colliding (as seen in the image) ...
... 1014 solar masses So many galaxies are close together, some are colliding (as seen in the image) ...
May 2010 - Pomona Valley Amateur Astronomers
... “How old are they?” The first bit of information we need is the redshift, the value of “Z.” What is it? Hydrogen is the most abundant element in the outer reaches of any star. It is simply a proton with an electron orbiting it. Quantum Physics has explained that the possible orbits are separated by ...
... “How old are they?” The first bit of information we need is the redshift, the value of “Z.” What is it? Hydrogen is the most abundant element in the outer reaches of any star. It is simply a proton with an electron orbiting it. Quantum Physics has explained that the possible orbits are separated by ...
1 Assignment Discovery Online Curriculum Lesson title
... 1. Parallax is the apparent change in position of an object when it's viewed from two different places. Astronomers use this phenomenon to measure the distances to some stars. They assume that the stars are fixed, and as the Earth moves in orbit they take measurements of the apparent shift in positi ...
... 1. Parallax is the apparent change in position of an object when it's viewed from two different places. Astronomers use this phenomenon to measure the distances to some stars. They assume that the stars are fixed, and as the Earth moves in orbit they take measurements of the apparent shift in positi ...
IS AN ALTERNATE COSMOLOGY BECOMING NECESSARY?
... galaxies could rapidly build larger galaxies via mergers. For this to happen we must see many millions of them, but instead there are a paltry few. Merging could be possible but it is likely to take trillions of years for two galaxies to complete the merger. This amount of time cannot be accepted so ...
... galaxies could rapidly build larger galaxies via mergers. For this to happen we must see many millions of them, but instead there are a paltry few. Merging could be possible but it is likely to take trillions of years for two galaxies to complete the merger. This amount of time cannot be accepted so ...
Astronomy 114 – Summary of Important Concepts #2 1 Stars: key
... 16. Be able to define the various clouds (nebulae) within the interstellar medium: dark nebulae, emission nebulae, and reflection nebulae 17. Know what protostars are and be able to explain how they form and evolve into main-sequence stars 18. Understand what happens during a star’s main-sequence li ...
... 16. Be able to define the various clouds (nebulae) within the interstellar medium: dark nebulae, emission nebulae, and reflection nebulae 17. Know what protostars are and be able to explain how they form and evolve into main-sequence stars 18. Understand what happens during a star’s main-sequence li ...
taken from horizons 7th edition chapter 1 tutorial quiz
... The Milky Way Galaxy a. contains our Sun, which is located about two-thirds of the way from the center to the edge. b. contains about one-hundred billion stars. c. all of these choices. d. is a fairly large galaxy, but is not unique. answer: c ...
... The Milky Way Galaxy a. contains our Sun, which is located about two-thirds of the way from the center to the edge. b. contains about one-hundred billion stars. c. all of these choices. d. is a fairly large galaxy, but is not unique. answer: c ...
ppt document - FacStaff Home Page for CBU
... 3. Cepheid Variables: By measuring the period of a cepheid variable, we can use the periodluminosity relationship to get the luminosity. Then by measuring the brightness, we can determine the distance. This works for the nearer galaxies. 4. Spiral galaxies appear to be uniform in size and luminosity ...
... 3. Cepheid Variables: By measuring the period of a cepheid variable, we can use the periodluminosity relationship to get the luminosity. Then by measuring the brightness, we can determine the distance. This works for the nearer galaxies. 4. Spiral galaxies appear to be uniform in size and luminosity ...
Using Photometric Data to Derive an HR Diagram
... Step 1: Taking digital images of your cluster in Blue and Visual bands First you have to take exposures with both B and V filters, and you must correct your raw images in the usual way: take a dark current exposure of the same duration as each raw image; take a flat field exposure with each filte ...
... Step 1: Taking digital images of your cluster in Blue and Visual bands First you have to take exposures with both B and V filters, and you must correct your raw images in the usual way: take a dark current exposure of the same duration as each raw image; take a flat field exposure with each filte ...
Stars, Galaxies & Universe
... White dwarf- no nuclear process Black dwarf- no heat or light Black Hole (area of large gravitational attraction) or Neutron star (very dense star) ...
... White dwarf- no nuclear process Black dwarf- no heat or light Black Hole (area of large gravitational attraction) or Neutron star (very dense star) ...
doc - University of Texas Astronomy
... intermediate mass BH in center of globular cluster. Now plenty are known. At the centers of galaxies: Stars and gas very near the centers of galaxies (including our own) are moving very rapidly, orbiting some unseen object. Masses inferred from Newton’s laws are millions to billions of solar masses! ...
... intermediate mass BH in center of globular cluster. Now plenty are known. At the centers of galaxies: Stars and gas very near the centers of galaxies (including our own) are moving very rapidly, orbiting some unseen object. Masses inferred from Newton’s laws are millions to billions of solar masses! ...
Environmental Science/Physics 141: Astronomy
... – This sets an absolute limit on magnification (rule of thumb: 20 x diameter in cm) – If we want detailed images of the planets, we have to go out there physically and get them 7. How Telescopes Work ...
... – This sets an absolute limit on magnification (rule of thumb: 20 x diameter in cm) – If we want detailed images of the planets, we have to go out there physically and get them 7. How Telescopes Work ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.