astronomy 100 what’s in a galaxy. now: go to register. goal: – understand the different types...
TRANSCRIPT
![Page 1: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/1.jpg)
Astronomy 100
What’s in a Galaxy
![Page 2: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/2.jpg)
• Now: Go to http://beta.galaxyzoo.org/Index.aspx Register.
• Goal:– Understand the different types of Galaxies– Know the features of galaxies– Catch the little details about galaxies we haven’t
covered yet.– Coordinate meeting at PSC next Wednesday
• Vocabulary: Rotation curve, Megaparsec, Hubble law, Gravitational lensing, Clusters of galaxies, Interacting galaxies, Active galactic nuclei, quasars, Seyfert Galaxies, Supermassive Black Holes, Jets – again!
![Page 3: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/3.jpg)
Types of Galaxies
• What types of galaxies did you notice?
• What features did you notice in the galaxies?
![Page 4: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/4.jpg)
Star Clusters
• Globulars – in the halo – oldsters• Open – in the disk – younger
![Page 5: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/5.jpg)
Hubble Tuning Fork
http://www.le.ac.uk/ph/faulkes/web/images/tuning_fork_diagram.jpg
![Page 6: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/6.jpg)
![Page 8: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/8.jpg)
HUDF
![Page 9: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/9.jpg)
![Page 10: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/10.jpg)
Rotation Curve
• http://pppa.group.shef.ac.uk/dm/images/rotationCurve.jpg
![Page 11: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/11.jpg)
• Great DM Lecture: • http://bustard.phys.nd.edu/Phys171/
lectures/dm.html
![Page 12: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/12.jpg)
Hubble’s Law
• Remember red shift?• Everything is redshifted - more if it’s further
away• The Universe is Expanding.
![Page 13: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/13.jpg)
Gravitational Lensing
• http://www.windows.ucar.edu/the_universe/images/ab2218_sm.jpg
![Page 14: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/14.jpg)
Large Structure
• http://urania.bo.astro.it/slice_bigcluster2.jpg
![Page 15: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/15.jpg)
The Mice
• http://www.ifa.hawaii.edu/~barnes/research/interaction_models/mice/index.html#highres
• http://antwrp.gsfc.nasa.gov/apod/ap040612.html
![Page 16: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/16.jpg)
![Page 17: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/17.jpg)
Active Galactic Nuclei
• Seyfert Galaxies (active core)• Quasars (really far away, really bright)• Radio Galaxies• Starburst Galaxies (bright arms/disk)
• Powered by supermassive black holes?• Jets – again!
![Page 18: Astronomy 100 What’s in a Galaxy. Now: Go to Register. Goal: – Understand the different types of Galaxies – Know](https://reader036.vdocuments.net/reader036/viewer/2022062809/5697bfe31a28abf838cb4d9f/html5/thumbnails/18.jpg)
• Answer Now (draw or describe):• Tell me about the different types of galaxies
or• Tell me about the common features of
galaxies• Define 1: Rotation curve, Megaparsec, Hubble law,
Gravitational lensing, Clusters of galaxies, Interacting galaxies, Active galactic nuclei, quasars, Seyfert Galaxies, Supermassive Black Holes, Jets
• Before You Leave: How are you getting to PSC next Wednesday?