PPT-8 ii 2012 KIPAC 1 The Hubble Constant

Current and Future Challenges Roger Blandford KIPAC Topics Why do we care How are we doing How many Hubble flowers Physics vs magic Validation What next 8 ii 2012 KIPAC 2 8 ii 2012. Galaxies separating: How fast are they going? duce Einstein's infamous cosmological constant, which the great scientist himself referred to as the biggest scientific mistake of his life. Out of desper Homogeneous and uniform cosmic expansion . Hubble constant determines scale factor . Hubble diagram was based on a limited distance scale calibrated by Cepheid variable stars in relatively nearby galaxies. KIPAC. 1. The Hubble Constant . Current and Future Challenges. Roger . Blandford. KIPAC. Topics. Why do we care?. How are we doing?. How many (Hubble) flowers?. Physics . vs. magic?. Validation?. What next?. Not as Empty as You Might Think. Dr. Andrew Fox. Space Telescope Science Institute/European Space Agency . Hubble Science Briefing. April 5 2012. What is a galaxy made of?. 2. 2. Stars. Dark Matter. Interstellar Gas & Dust. Lecture 3; April . 11 2013. Previously.. On Astro-2. The universe is much larger than the Milky Way (Gpc vs kpc). There are billion of galaxies, the Milky Way is average Joe galaxy. Most galaxies can be classified based on their appearance as . Mansi M. Kasliwal. Carnegie Institution for Science. 2012 Hubble Fellows Symposium. Life as a postdoc…. March 5, 2012. Mansi M. Kasliwal / Hubble Symposium. 2. Palomar Transient Factory. . A wide-angle, high cadence survey dedicated to. Program. A mid-infrared recalibration of the extragalactic distance scale. Carnegie Hubble . Program. Wendy Freedman (PI). Eric . Persson. , Mark Seibert. Vicky Scowcroft, Andy Monson. Laura . Sturch. Drs. Carol Christian, Antonella Nota, and Brad Whitmore. May 7, 2015. Stars /Star Clusters. Carol Christian. Stars form from gas and dust clouds. The clouds collapse due to gravity. Also the clouds can collide / compress. Michael Fall. STScI. . CoolSci. Talk. . Specific Angular Momentum . vs. Mass. Fall 1983. . j. = J/M . α. . M. α. with . α. ≈ . 2/3. S and E galaxies offset by ~6x. The nearly exact degeneracy -- i.e., nearly the same CMB anisotropies in models with different geometries but the same matter content –. Is a limit to deriving parameters such . as the Hubble constant from CMB. of . Substellar. Evolution . from Infrared Parallax Program(s). Trent Dupuy. Art credit: R. Hurt (IPAC). log(. L. bol. /. L. . ) . Mass (. M. . ) . Hubble Symposium 2012. Trent Dupuy (CfA/SAO). By Gayla Burrage. The Hubble Telescope was launched in 1990.. Recently, astronauts voted . on the top. . photographs.  taken by Hubble, in its 16-year journey so far. . Reporter . Michael Hanlon says the photos "illustrate that our universe is not only deeply strange, but also almost impossibly beautiful."  . How It Works. Every 97 minutes, Hubble completes a spin around . Earth. .. . As it travels, Hubble's mirror captures light and directs it into its several science . instruments. The Hubble is . a type of telescope known as a . Atınç Çağan Şengül. A little historical background. The universe of 100 years ago. The Great War. General Theory of Relativity is just published. Milky Way was not “a galaxy” it was “the galaxy”.