Risa Wechsler: Connecting Galaxies, Halos, and Star Formation Rates Across Cosmic Time 
Risa Wechsler: Connecting Galaxies, Halos, and Star Formation Rates Across Cosmic Time by SETI
Video Lecture 32 of 48
1 rating
Views: 2,390
Date Added: December 29, 2009

Lecture Description


08/26/2009



Connecting Galaxies, Halos, and Star Formation Rates Across Cosmic Time



Risa Wechsler, Kavli Institute for Particle Astrophysics and Cosmology and Physics Department, Stanford University


Numerous complementary observations over the past decade have pinned down the initial conditions for structure formation just a few hundred thousand years after the big bang, and also indicate that the matter density of the Universe is dominated by "cold" dark matter (CDM). The non-linear evolution of structures can then be followed using numerical simulations of the dark matter distribution, which indicate that dark matter quickly clumps into bound objects known as dark matter halos. Recent studies indicate that galaxy properties are tightly correlated with the masses of these dark matter halo hosts. Dr. Wechsler will present a new observationally-motivated model for understanding how halo masses, galaxy stellar masses, and star formation rates are related, and how these relations evolve with time. This provides a framework for understanding a wide variety of galaxy properties and their evolution in the the context of the evolution of dark matter structure.



- Poster

- Slides

Course Index

  1. David Morrison: Mission to a Potentially Threatening Asteroid
  2. Laura T. Iraci: Laboratory Studies of Water Ice Cloud formation under Martian Conditions
  3. Jeffrey Van Cleve: The Race to Detect the First Earth-sized Planet
  4. Ron Greeley: Surface modifications by winds on Earth, Mars, Venus, and Titan
  5. JoAnne Hewett: The Hunt for Hidden Dimensions
  6. Franck Marchis: Multiple Asteroid Systems: New Techniques to Study New Worlds
  7. Interstellar and Early Solar System Organics in Samples from Comet Wild 2
  8. Ross A. Beyer: Google Earth, now with Mars!
  9. Jeffrey Scargle: Tools for Probing the Universe
  10. Richard Muller: Discovery of Strong Cycles in Fossil Diversity
  11. Rachel Mastrapa: Weathering on Icy Satellites: Probing the Near Surface Using Infrared Spectroscopy
  12. John McCarthy: Convergent evolution of our own and extra-terrestrial intelligence
  13. Jasper Halekas: The Dynamic Lunar Environment
  14. Tom Abel: First Things in the Universe
  15. Julie Chittenden: Experimental determination of the effect of salts, regolith, and wind
  16. Philip Russell: Aerosol particle roles in climate change
  17. Edwin Kite: True Polar Wander and Climate on Late Hesperian/Amazonian Mars
  18. Robert Landis: NEOs Ho!! The Asteroid Option
  19. Terry Fong: Field Testing of Utility Robots for Lunar Surface Operations
  20. Mikhail Kreslavsky: Geological record of recent climate change on Mars
  21. Amos Nur: Apocolypse: Earthquakes, Archeology and the the Wrath of God
  22. Robert Lillis: Death of the Martian Dynamo
  23. Brian Jeffs: Progress in phased array feed development for radio astronomy
  24. Ray Kurzweil: The Implications of the Law of Accelerating Returns for the Search for ETI
  25. The impact and recovery of asteroid 2008 TC3
  26. Dr. Beth Ann Hockey: How to Speak to Your Computer
  27. Janice Bishop: The Surface of Mars
  28. John Balboni: How do You Qualify Heat Shields on Earth?
  29. Kevin Zahnle: Earth After the Moon-forming Impact
  30. Dave Brain: Atmospheric Escape and Aurora on Mars
  31. Michael Carr: Mars - The Water Story and Prospects for Life
  32. Risa Wechsler: Connecting Galaxies, Halos, and Star Formation Rates Across Cosmic Time
  33. Natalie Batalha: Kepler's First Peek
  34. Darlene Lim: Pavilion Lake - Diving Deep to Get Us to the Moon and Mars
  35. Paul Kalas: HST Imaging of Fomalhaut
  36. Reid Parsons: Where is Mars' Ice?
  37. Markus Aschwanden: Solar Flares and Coronal Mass Ejections Observed with STEREO
  38. Nathan Bramall: Detecting Organics Using Fluorescence Spectroscopy
  39. Dr. Stefan Funk: Fermi-LAT Observing the Universe With High-Energy Gamma-Ray Eyes
  40. Special Panel: LCROSS Mission - The First Results of the Impact
  41. Elmar Fuchs: The Inner Structure of a Floating Water Bridge
  42. Ben Zuckerman: The Search for Intelligent Life in the Universe - Some Great Challenges for SETI
  43. David Hollenbach: Water, Molecular Oxygen and Ice in Star-Forming Molecular Clouds
  44. Linda Spilker: The Rings of Saturn as seen by Cassini CIRS
  45. Claudio Maccone: Deep Space Flight and Communications
  46. Lauren Wye: Titan's Ontario Lacus
  47. Steven S. Vogt: Finding Planets Around Nearby Stars
  48. Gerry Harp: Exploring Alternative SETI Search Algorithms with the ATA

Course Description


The colloquiums are free and open to the public, and run from noon to 1 pm on Wednesdays at the SETI Institute, 515 N. Whisman Road, Mountain View, California.

Comments

There are no comments. Be the first to post one.
  Post comment as a guest user.
Click to login or register:
Your name:
Your email:
(will not appear)
Your comment:
(max. 1000 characters)
Are you human? (Sorry)