'Nearest stars' diaporamas de présentation

Chapter 15 Surveying the Stars

Chapter 15 Surveying the Stars. Insert TCP 5e Chapter 15 Opener. 15.1 Properties of Stars. Our goals for learning: How do we measure stellar luminosities? How do we measure stellar temperatures? How do we measure stellar masses?. How do we measure stellar luminosities?.

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The Potential for Human Evolution

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Optical image of the Milky Way (360 degrees)

Optical image of the Milky Way (360 degrees). Kapteyn (1922). Shapley (1919). COBE near-infrared image of the Milky Way. NGC 891. Magellanic clouds. Fornax dwarf galaxy. Leo I dwarf galaxy. M31 = Andromeda galaxy + NGC 205 + M32 (+ Moon, for scale).

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Stellar Properties

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ASTR 1102-002 2008 Fall Semester

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Stellar Properties

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Stellar Properties

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SCALES: PLANETARY

SCALES: PLANETARY. Problem for Astronomers: there is no sense of depth from looking at the sky. Comet Hale-Bopp: 10 light- minutes away. Andromeda Galaxy: 2 million light-years away. Proximity on the sky does not tell us about proximity in space.

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The Stars

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Announcements

Announcements. Pick up graded homework Lecture slides on web site have been updated Take the test W, Th, or F before class Physics seminar today, 1:00, SL 121: The Utah Science Center, Joe Andrade. Properties of Stars. 25 October 2006. Today:.

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Big Bang Theory

Big Bang Theory. Investigative Science. What is a Theory?. Well-established idea that is supported by scientific evidence. Theory statements can be refuted, but not verified, no matter how strongly we believe in the truth of a theory. It is always possible for it to be falsified.

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Stars in General

Stars in General. Only 6 of the 20 brightest stars in the sky are closer to us than 10pc ? 14 of the 20 brightest stars in the sky must have absolute magnitude of at least 1.5 (20 times brighter than the Sun) Out of the 6000 stars visible, only 50 are dimmer than the Sun in absolute magnitude.

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Assignment #5: Due March 20

Assignment #5: Due March 20.

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