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PHYS 3380 - Astronomy

Get information about the PHYS 3380 - Astronomy course taught by Dr. Phillip Anderson in Fall 2019. Learn about syllabus, grading, exams, projects, and more.

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PHYS 3380 - Astronomy

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  1. PHYS 3380 - Astronomy PHYS 3380 - Astronomy Dr. Phillip Anderson

  2. PHYS 3380 - Astronomy PHYS 3380 - Astronomy • Fall 2019 • INSTRUCTOR: • DrPhillip C. Anderson 972-883-2875 — Room PHYS 1.912 (and WSTC1.720) email: phillip.anderson1@utdallas.edu • TEACHING ASSISTANT: • Rahul Solanki • Rahulkumar.Solanki@utdallas.edu • PHY 1.102 desk 11 • OFFICE HOURS: • DrAnderson: MW 12:00 PM – 2:00 PM and by appointment • MrSolanki (TBD)

  3. Fall 2018 • TEXT: • Foundations of Astronomy, Seeds, 14th Edition • See me if you have the 13th edition • Slides will be available on web at www.utdallas.edu/~pca015000 • GRADING: • Exams (3) • 2 Exams (Oct 2, Nov 6) @ 20% each = 40% • Final Exam (TBD) = 30% • Homework = 20% • Homework will be assigned weekly and will • be due a week later. Late homework will not be accepted (except in extraordinary circumstances).. It is considered late after 3:45 PM seven days after assigned unless otherwise specified. . • Projects = 10% • Attendance will be taken every class period and will be used to decide whether to raise or lower grades on the cusp. PHYS 3380 - Astronomy

  4. PHYS 3380 - Astronomy Follow the links to each class’s notes(at www.utdallas.edu/~pca015000) They will be available at least the day before the class. Any movies in the notes will be separated out and put in a separate directory. They can be played with Quicktime or may be html animations that can be run through your web browser. The exams will only cover material discussed in class. It would behoove you to read the relevant material in the book before/after class as it may provide a different perspective on the material that will help you understand it better than the lecture and class notes alone. Note that some of the material covered in the lecture will not be in the text - it is very important to attend class.

  5. PHYS 3380 - Astronomy • Project 1 • 1. Find a location from where you can observe either the sunrise or sunset. Note some landmarks, such as trees or light poles, etc. Make a sketch of the location and on the sketch plot the position on the horizon that the sun either rises or sets (morning or evening). Record the date and the time when you first see the sun rise or last see it set. Do this about once per week consistent with weather conditions. You MUST have at least 3 months of observations. • 2. Write a three to four page paper on: • A. How and where you made your observations. • B. How did the sunrise or sunset position change with time? • C. How fast did it change? Was the change uniform over the three month period? • D. Why did the sunrise or sunset position move as you observed it. • E. What problems did you encounter in doing this project and how did you solve those problems? • 3. The project is to be turned at the final (TBD).

  6. PHYS 3380 - Astronomy • Project 2 • 1. Plot the location and phase of moon over a complete synodic month, e.g., from new moon to new moon on an all-sky diagram as shown below. In an all-sky diagram, zenith is at the center and the edge of the circle is the horizon with the compass points indicated as in the figure. Estimate the compass direction of the moon (use a compass or the north star) and the angle of the moon above the horizon. Plot its location on the diagram using: • (distance from edge of the circle to moon location)/radius = (angle above the horizon)/90 • location around circle = cardinal direction (N,S,E,W)

  7. PHYS 3380 - Astronomy • In the example in the diagram, the moon is in the southeast, 30 degrees above the horizon. • Draw a picture of the moon at the location as it appears, in other words its phase. Do it at the same time every night. Obviously there will be times when the weather does not cooperate but there should be at least 15 nights in which you perform the observation.

  8. PHYS 3380 - Astronomy • 2. Write a three to four page paper on: • A. How and where you made your observations. • B. How did the moon’s position and appearance change with time? • C. How fast did they change? Was the change uniform over the observation period? • D. Why did the moon’s position and appearance move as you observed it? • E. What problems did you encounter in doing this project and how did you solve those problems? • 3. The project is to be turned in at the final (TBD).

  9. PHYS 3380 - Astronomy SYLLABUS - Fall 2019 Chapters 1 ,2, & 3 The Night Sky Chapter 4 History of Modern Astronomy Chapter 5 Newton, Einstein, and Gravity Chapter 6 Light and Telescopes Chapter 7 Information from Distant Objects Chapter 8 The Sun Chapter 9 Determining the Observable Properties of Stars Chapters 10 & 11 Interstellar Medium and Star Formation Chapter 12 The Evolution of Stars Chapters 13 & 14 The Deaths of Stars Chapters 15 & 16 Galaxies Chapter 18 Cosmology Chapter 26 Life in the Universe

  10. PHYS 3380 - Astronomy SCALES OF DISTANCE

  11. PHYS 3380 - Astronomy Our Place in the Cosmos

  12. PHYS 3380 - Astronomy Light Travel Time

  13. PHYS 3380 - Astronomy 1.25 s

  14. PHYS 3380 - Astronomy The Solar System 8.3 min 41 min 85 min 5.5 hr

  15. PHYS 3380 - Astronomy

  16. PHYS 3380 - Astronomy

  17. PHYS 3380 - Astronomy Alpha Centauri - closest star - 4.3 LY Our Milky Way Galaxy

  18. PHYS 3380 - Astronomy The Milky Way

  19. PHYS 3380 - Astronomy Spiral Galaxies Similar to the Milky Way Edge view View from above

  20. PHYS 3380 - Astronomy The Milky Way The Sun is located on the Orion spiral arm about 30,000 LY from the galactic center It takes about 230 million years for the sun to complete one orbit around the galactic center

  21. PHYS 3380 - Astronomy Other Galaxies in Our Local Group A Ring Galaxy The Andromeda Galaxy 2.3 million LY away

  22. PHYS 3380 - Astronomy Deep field view - about 10 billion LY away

  23. PHYS 3380 - Astronomy • In our galaxy there are about 200 billion stars • In our universe there are over 100 billion galaxies • There are more stars in the universe than there are grains of sand on the Earth

  24. PHYS 3380 - Astronomy If the Universe was one year old (instead of 13.7 billion years) The Cosmic Calendar (Carl Sagan)

  25. PHYS 3380 - Astronomy 1027 meters = 1000 yottameters 100 Billion Light Years This image represents the size of the known universe -- a sphere with a radius of 13.7 billion light years.

  26. PHYS 3380 - Astronomy 1026 meters = 100 yottameters Ten Billion Light Years Light from galaxies on the edge would require 5 billion years to reach the center. Observers at the center are seeing light that was emitted by these galaxies before the solar system formed. The largest scale picture ever taken. Each of the 9325 points is a galaxy like ours. They clump together in 'superclusters' around great voids which can be 150 million light years across.

  27. PHYS 3380 - Astronomy 1025 meters = 10 yottameters One Billion Light Years Astronomers have determined that the largest structures within the visible universe - superclusters, walls, and sheets - are about 200 million light years on a side.

  28. PHYS 3380 - Astronomy 1024 meters = 1 yottameter 100 Million Light Years Clusters of Galaxies

  29. PHYS 3380 - Astronomy 1023 meters = 100 zettameters 10 Million Light Years Within the Virgo Cluster

  30. PHYS 3380 - Astronomy 1022 meters = 10 zettameters 1 Million Light Years The Local Group - Our galaxy with the Magellanic Clouds - two companion galaxies on the right.

  31. PHYS 3380 - Astronomy 1021 meters = 1 zettameter 100,000 Light Years Our galaxy - the Milky Way - looks rather like a whirlpool. It has spiral arms curling outwards from the center and rotates at about 900 kilometres per hour. It contains about 200 billion stars.

  32. PHYS 3380 - Astronomy 1020 meters = 100 exameters 10,000 Light Years Our Spiral Arm

  33. PHYS 3380 - Astronomy 1019 meters = 10 exameters 1,000 Light Years The Stars of the Orion Arm

  34. PHYS 3380 - Astronomy 1018 meters = 1 exameter 100 Light Years Stars within 50 Light Years

  35. PHYS 3380 - Astronomy 1017 meters = 100 petameters 10 Light Years The Nearest Stars

  36. PHYS 3380 - Astronomy 1016 meters = 10 petameters 1 Light Year The Oort Cloud

  37. PHYS 3380 - Astronomy 1015 meters = 1 petameter 0.1 Light Year Sol - our Sun

  38. PHYS 3380 - Astronomy 1014 meters = 100 terameters Our Sun and a few rocks

  39. PHYS 3380 - Astronomy 1013 meters = 10 terameters The solar system. Only the orbit of Pluto is off the picture.

  40. PHYS 3380 - Astronomy 1012 meters = 1 terameter Within the orbit of Jupiter - the orbits of the inner four planets : Mercury, Venus, Earth and Mars. All four have rocky crusts and metallic cores.

  41. PHYS 3380 - Astronomy 1011 meters = 100 gigameters Six weeks of the Earth's orbit. The orbits of Venus and Mars are just visible on either side.

  42. PHYS 3380 - Astronomy 1010 meters = 10 gigameters Four days of the Earth's orbit.

  43. PHYS 3380 - Astronomy 109 meters = 1 gigameter The moon's orbit around the Earth, the furthest humans have ever traveled.

  44. PHYS 3380 - Astronomy 108 meters = 100 megameters Earth

  45. PHYS 3380 - Astronomy 107 meters = 10 megameters North and Central America

  46. PHYS 3380 - Astronomy 106 meters = 1 megameter California

  47. PHYS 3380 - Astronomy 105 meters = 100 kilometer The San Francisco Bay Area

  48. PHYS 3380 - Astronomy 104 meters = 10 kilometers San Francisco

  49. PHYS 3380 - Astronomy 103 meters = 1 kilometer Golden Gate Park

  50. PHYS 3380 - Astronomy 102 meters = 100 meters Japanese Tea Garden - one hectare (10,000 m2)

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