'Cepheids' presentation slideshows

Good Vibrations and Stellar Pulsations

Good Vibrations and Stellar Pulsations. l = 2, m = 0. l = 5, m = 3. Brad Carroll Weber State University April 11, 2007. www.univie.ac.at/tops/intro.html.

864 views • 69 slides

The Milky Way Galaxy

The Milky Way Galaxy The Milky Way We see a band of faint light running around the entire sky. Galileo discovered it was composed of many stars. With unaided eye you can see light and dark patches. Measuring the Milky Way William Herschel Star Counting Assumed all stars same brightness

846 views • 34 slides

Teramo, 6 Maggio 2008

Stelle pulsanti classiche: problemi aperti e prospettive future Marcella Marconi INAF-Osservatorio Astronomico di Capodimonte. Teramo, 6 Maggio 2008. OUTLINE. Pulsating stars: an introduction Classical cepheids and RR Lyrae: why to continue studying them? Problems and possible solutions.

434 views • 33 slides

Teramo, 6 Maggio 2008

Stelle pulsanti classiche: problemi aperti e prospettive future Marcella Marconi INAF-Osservatorio Astronomico di Capodimonte. Teramo, 6 Maggio 2008. OUTLINE. Pulsating stars: an introduction Classical cepheids and RR Lyrae: why to continue studying them? Problems and possible solutions.

453 views • 33 slides

Astrophysics

Astrophysics. E3 Stellar Distances. Stellar Distances Units. Earth in June. Distant stars. Near star. 1 AU. d. ?. Sun. ?. 1 AU. Earth in January. Stellar parallax. d = 1 AU ?. d (parsecs) = 1 p (arc-seconds). Angular Sizes 360 degrees ( 360 o ) in a circle

380 views • 27 slides

Chapter 18: Celestial Distances

Chapter 18: Celestial Distances. A Galaxy 150 Million Light Years From Earth . Distance and Motion of Stars. To infer luminosity, mass, and size from observations we need to know the distance to a star. Distance units for stars: light year (LY): distance light travels in one year

332 views • 23 slides

3.1 Cosmic Distance Ladder

3.1 Cosmic Distance Ladder. From these methods: Determine distance (see p 615 including Fig 20.16) . From these methods: Determine distance (see p 626 including Fig 20.16) . From these methods: Determine distance (see p 626 including Fig 20.16) .

334 views • 16 slides

CEPHEIDS

162 views • 11 slides

The Hubble Constant Current and Future Challenges

Roger Blandford KIPAC. The Hubble Constant Current and Future Challenges. Topics. Why do we care? How are we doing? How many (Hubble) flowers? Physics vs magic? Validation? What next?. Why do we care?. Serious questions require independent Ho Is the world flat?

212 views • 8 slides