PPT-Cepheid Variable Stars

Cepheids Very late in their lives massive stars can pass briefly through a stage in which they are unstable During this stage their outer parts oscillate pulsate in a nd out. Wrocław 20.08.2013. Mid 1960ties.. . Variability. of . Cepheids. and RR . L. y. r. ae. stars explained. . Radial. . pulsation. . hypothesis. (Ritter 1879. ) . confirmed. (. Shapley. 1914, . The Sun and the Stars. The Sun and the Stars. Binary stars:. Most stars are found in binary or multiple systems.. Binary star systems consist of 2 stars which are gravitationally bound with each star. Soprano I Hence  stars,  you  daz- zle but the sight,   you teach to Soprano II Hence  stars, \r \r \r Alto Hence  stars, hence   stars too  dim of light,  you  daz-  zle  b 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. Stars born with more than 8 — 10 M.  . cannot . lose enough mass to become white dwarfs. . These stars die by supernova explosions.. Ignition of “metals”. The core of an old high-mass star gets little . LMC Cepheid Variables PL Relation in IR. J. Bennett, D. Citro, J. . Chartrand. , S. . Kanbur. , C. . Ngcow. , L. . Macri. , S. . Mahzooni. , F. Ripple. Physics Department, SUNY Oswego, National Central University Taiwan, and Texas . B-V color index way of quantifying this - determining spectral class - using two different filters. one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, . Overlapping rungs:. Earth. Earth-Mars. Earth’s orbit. Parallax. Spectral “Parallax”. RR Lyrae variables. Cepheid variables. Type I Supernovae. Type II Supernovae. Galaxy brightness. Measuring Earth - Geometry. and Parallax from Spatial Scanning. Part 2. Adam Riess and Stefano . Casertano. Distortion at the . milli. -. pixel level. Spatial Scanning Provides measurement 1D. *. precision of < 1 . millipix. constellations. a. Ancient cultures used . mythology. or everyday items to name constellations. 2. Modern astronomy studies . 88 . constellations. 3. Some constellations are not . visible. all year because Earth revolves around the Sun. Stars 1. Patterns of stars – constellations a. Ancient cultures used mythology or everyday items to name constellations 2. Modern astronomy studies 88 constellations 3. Some constellations are not Gordon Myers. AAVSO Speakers Bureau. ALCON 2009. Historical Perspective – Mira. David . Fabricius. discovered “omicron . ceti. ” in 1596. Brightened from 3. rd. Tip 16 copper skin tonestars 2105-8507SMnBatWebIs50530qxd 7/12/05 1142 AM Page 1Using Your Decorating Bag and Coupler1Screw ring off coupler to expose series of tiny2Force coupler base as far down A . star is a massive ball of plasma that emits . light and electromagnetic energy . throughout the universe. . While . there is only one star in our solar system, there are billions upon billions of stars throughout our galaxy and exponentially more in the billions of galaxies in the universe.