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Binary Stars

Binary Stars. a 3 P 2. M=k. X. Binary stars. orbit each other. Visual Binary Stars. 2 Conditions Required. Visual Binary Stars. 2 Conditions Required. 1-Far Apart. Visual Binary Stars. 2 Conditions Required. 1-Far Apart 2-Both Bright. 430pc. 25pc. Optical Double Stars.

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Binary Stars

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  1. Binary Stars

  2. a3 P2 M=k X Binary stars orbit each other.

  3. Visual Binary Stars 2 Conditions Required

  4. Visual Binary Stars 2 Conditions Required 1-Far Apart

  5. Visual Binary Stars 2 Conditions Required 1-Far Apart 2-Both Bright

  6. 430pc 25pc Optical Double Stars Look Like Visual Binaries Optical Illusion One Much Farther Away

  7. March 1972 March 1982

  8. Astrometric Binary Stars March 1972 March 1982

  9. Astrometric Binary Stars March 1972 March 1982 What is required? Star Shows Measurable Motion in Few Decades Star Relatively Close to Us

  10. a3 P2 M=k Astrometric Binary Stars March 1972 March 1982 March 1992 20 years = 1/3 P P = 60 years

  11. Astrometric Binary Stars March 1972 March 1982 March 1992 a3 P2 M>k

  12. X

  13. Invisible Companion Not Bright Enough to Be Seen M=5M¤ M1=1M¤ M2=4M¤ Black Hole

  14. Invisible Companion Not Bright Enough to Be Seen M=5M¤ M1=3.5M¤ M2=1.5M¤ Neutron Star Chandrasekhar Limit 1.4M¤

  15. Invisible Companion Not Bright Enough to Be Seen M2<8%M¤ Brown Dwarf

  16. a3 P2 M=k Astrometric and Visual Binary Stars Far Apart Both Bright Stars Shows Measureable Motion in Only a Few Decades Close to Us

  17. Spectroscopic Binary

  18. Velocity Time Spectroscopic Binary

  19. Spectroscopic Binary What is required? High Inclination

  20. 2pa P = v a3 P2 M=k Spectroscopic Binary v = v sin i

  21. 2pa P = v a3 P2 M>k Spectroscopic Binary v = v sin i

  22. PlanetsSpectroscopic Binary

  23. Invisible Companion Black Hole Neutron Star Brown Dwarf Planet

  24. & Spectroscopic Binary Spectrum Binary B5 K2 Hot Cool What is required? Both Bright Different Temperature

  25. Time Spectroscopic Binary Velocity

  26. Eclipsing Binary Light Curve magnitude Time

  27. Time Eclipsing Binary magnitude

  28. Time Eclipsing Binary magnitude

  29. Time Eclipsing Binary magnitude

  30. Time Eclipsing Binary magnitude

  31. Time Eclipsing Binary magnitude

  32. Time Eclipsing Binary magnitude

  33. Time Eclipsing Binary magnitude

  34. Time Eclipsing Binary magnitude

  35. Time Eclipsing Binary magnitude

  36. Time Eclipsing Binary magnitude

  37. Eclipsing Binary What is required? Both Bright Inclination = 90°

  38. 2pa P = v a3 P2 M=k Spectroscopic Binary v = v sin i

  39. Star Masses

  40. Eclipsing Binary

  41. Eclipsing Binary

  42. Time Eclipsing Binary magnitude

  43. Eclipsing Binary

  44. Time Eclipsing Binary magnitude

  45. Star Sizes

  46. Star Sizes Surface Area = 4 p R2 Energy = s T4 Luminosity = 4 p R2s T4

  47. SecondaryPrimary

  48. Surface Brightness

  49. Surface Brightness

  50. Photosphere

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