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Class Notes for Astronomy at Stony Brook University

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AST 346 Lecture 4: Lecture 3 (II)
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Lecture 4: Cosmological Context (Part II) Deceleration, acceleration, and age of Universe Hubble constant and Hubble time Hubble constant: 0 = 100 h kmsMpc Hubble time:Ht= 1 H0 For h = 0.71:Ht= 14.1 Gyr Einsteinde Sitter U...

Astronomy
AST 346
Kenneth Lanzetta
AST 346 Lecture Notes - Lecture 3: Energy Density, Parsec, Friedmann Equations
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Lecture 3: Cosmological Context (Part I) Summary of \standard" cosmology Universe is expanding Expansion rate: 0 = 70.5 1.3 km/s/Mpc Age of Universe: t = 13.72 0.12 10 yr 0 ...

Astronomy
AST 346
Kenneth Lanzetta
AST 346 Lecture Notes - Lecture 2: Robert Julius Trumpler, Rayleigh Scattering, Minute And Second Of Arc
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Lecture 2: Brief History of Galaxies (Part II) Kapteyns investigation of the eects of obscuration Kapteyn knew that gas atoms could de ect light by the Rayleigh scattering process Also knew that Rayleigh ...

Astronomy
AST 346
Kenneth Lanzetta
AST 346 Lecture Notes - Lecture 2: Parkes, New South Wales, Vesto Slipher, 3C 273
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Lecture 2: Brief History of Galaxies (Part III) Hubbles discovery of the expansion of the Universe By 1929, Vesto Slipher had measured radial velocities of 41 spiral nebulae Radial velocities of the nebul...

Astronomy
AST 346
Kenneth Lanzetta
AST 346 Lecture Notes - Lecture 1: Milky Way, Outer Space, Quasar
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Lecture 1: Overview Lecture 2: Brief History of Galaxies (Part I) 1 Overview What are galaxies? Galaxies are the fundamental \particles" of cosmology. { Galaxies trace space and time. ...

Astronomy
AST 346
Kenneth Lanzetta
AST 101 Lecture Notes - Lecture 8: Escape Velocity, Hyperbola, Great Circle
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Chapter S3: Spacetime and Gravity Spacetime Space + time Curved spacetime Projections of spacetime The Equivalence principle Effects of acceleration=effects of gravity E...

Astronomy
AST 101
Jin Koda
AST 101 Lecture Notes - Lecture 15: Nuclear Fusion, Low Mass, Strong Gravity
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Chapter 17 Core temperature of stars depend on its mass Stars of low mass Weak gravity Low temperature and pressure Less nuclear fusion Stars of ...

Astronomy
AST 101
Jin Koda
AST 101 Lecture 9: AST 101 Chapter S2
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Space and Time Einstein's theories of relativity Special theory of relativity Usual notions of space and time must be revised for speeds approaching the speed of light ...

Astronomy
AST 101
Jin Koda
AST 101 Lecture Notes - Lecture 13: Redshift, Annie Jump Cannon, Orbital Velocity
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CH 15: Surveying the Stars Stars can evolve Evolution depends on mass Higher masses have shorter lives Small explosion on the stellar surface causes nova (novae) The star suddenly bec...

Astronomy
AST 101
Jin Koda
AST 101 Lecture Notes - Lecture 19: Density Wave Theory, Radiography, Signify
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Star A large glowing ball of gas that generates heat and light through nuclear fusion Nebula (interstellar medium) An interstellar cloud of gas and dust Star formation ...

Astronomy
AST 101
Jin Koda
AST 101 Lecture Notes - Lecture 20: Not Proven, Cosmological Principle, Cosmic Distance Ladder
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Galaxies and the foundation of modern cosmology Three major types of galaxies Spiral Galaxy Milky Way Disk Stars of all ages Many gas clouds ...

Astronomy
AST 101
Jin Koda
AST 101 Lecture Notes - Lecture 6: Windows Xp Visual Styles, Emission Spectrum, Continuous Spectrum
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Chapter 5 Light and Matter: Reading Messages from the Cosmos Everything we see is due to the interaction between light and matter Light is waves and particles The warmth of sunlight tells us that ligh...

Astronomy
AST 101
Jin Koda
AST 101 Lecture Notes - Lecture 4: Gravitational Energy, Net Force
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Making Sense Of The Universe: Understanding Motion, energy, & Gravity New Concepts Mass, weight - different Speed, velocity Motion Speed- rate at which an object moves ...

Astronomy
AST 101
Jin Koda
AST 341 Lecture Notes - Lecture 24: Main Sequence, Molecular Cloud, Metallicity
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XI. Star Formation To summarize what we have learned so far: The Jeans mass yields the condition for which gravitational collapse can start. What we need to discuss next is what happens during the collapse itself...

Astronomy
AST 341
Rosalba Perna

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