PPT-Variable Stars By : Etteyeb Nejmeddine

25 years of Astronomy Etteyeb Nejmeddine 21 years old The Astronomical Society of Tunisia SAT The Charlie Bates Solar Astronomy Project CBSAP Computer Science What Are Variable Stars Detecting variability. By Laura Lush. . . By Sephy Vandekamp. Stars. The . stars appear one by one. like small songs,. like small terrors. rattling bright in their cages.. The moon so skin.. Pale rice paper. awash in blood.. Are They Chemically Distinct to Their Fellow RGB and HB Stars?. M5: SDSS . Simon . Campbell. 1. . Universitat. . Politecnica. de . Catalunya. , Barcelona, Spain. 2. CSPA, . Monash. University, Melbourne, Australia. 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. Pulsating Variable Stars. Overview. History of discovery. What are pulsating variable stars?. Why are they important?. Any recent works?. Pulsating Variable Stars. History. 1595 – David Fabricius. o Ceti,. "There are countless suns and countless earths all rotating around their suns in exactly the same way as the seven planets of our system. We see only the suns because they are the largest bodies and are luminous, but their planets remain invisible to us because they are smaller and non-luminous. The countless worlds in the universe are no worse and no less inhabited than our Earth”. The Sun and the Stars. Stellar Lifecycle. Starbirth. Young Stars. Globular Clusters. Star Death. Star Death. Star Death. Star Death. Aims and Objectives. To introduce you to the properties of . t. he Sun and the stars, and their evolution. 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, . Earth Science 11. Chapter 21. Constellations. Constellation:. A groups of stars that appear to form patterns in the sky.. 88 different constellations can be seen from the Northern and Southern hemispheres.. Revision . lecture. Lecture slides available in . powerpoint. and . pdf. from. www.star.le.ac.uk. /~. mbu. /. lectures.html. Everything taught in the course is examinable…... However, here is a crib sheet of what to focus on. The “. Cosmic Distance Ladder. ”. Visual. “. Parallax. ”. “. Binocular. Vision”…. Let’s us “see” 3D images . (depth). …but, how to do this to get . Astronomical Distances. ?. “. 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. 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.