PPT-Studying the Milky Way using the WFAU Archives

Nicholas Cross Rob Blake Ross Collins Mark Holliman Mike Read Eckhard Sutorius Nigel Hambly Andy Lawrence Bob Mann Keith Noddle Wide Field Astronomy Unit Institute for Astronomy University of Edinburgh UK. Lec21: The Milky Way The Milky Way GalaxyLecture 21APOD Lec21: The Milky WayAtomic, molecular, and ionized gas Lec. 21: The Milky Way21 -2 Lec21: The Milky Way Galaxy. part 2. Unit: . Galaxies. Star systems like our Milky Way. Contain a few thousand to tens of billions of stars.. Large variety of shapes and sizes. Galaxy Diversity. The Hubble Deep Field:. The Milky Way: Our Home Galaxy. What are the different. components of the Milky Way?. How do we see those components?. What does a map of each component look like from our point of view?. Stars in the Milky Way. M51 – A typical spiral-disk galaxy. The M81 group of galaxies. M82. M81. Satellite galaxy. Satellite galaxy. M81 group showing hydrogen emission at radio wavelengths. Composite image of M 81. Blue shows X-Ray observations(high energy), pink infrared (dust). Paul McMillan. (Collaborators: James . Binney. , . Tilmann. . Piffl. , Jason Sanders) . Two fundamental problems. We can only observe . positions & velocities. , not . acceleration.. We’re . inside the Milky Way, moving with it. bye:. Angelina Battle. The legend of The Milky Way. This is what old people told me when I was a child. Long ago, when the world was new, there were not many stars in the sky. In those days people depended on corn for their food. They would grind it and keep it in bins behind their homes. Bread made from cornmeal, often kept them from starving during the long winter months. . Vital Statistics. It’s our home!. Contains more than 200 billion stars, and a mass of ~10. 12. suns. It’s almost as old as the Universe itself!. 13.7 billion years old. Structure. The core and spiral arms are of different . Contains more than 100 billion stars. Is one of the two largest among 40 galaxies in the Local Group. Our Solar System is located a little more than half way from the galactic center to the edge of the galactic disk.. The Greek philosopher Democritus (450–370 BC) proposed that the bright band on the night sky known as the Milky Way might consist of distant stars. Aristotle (384–322 BC), however, believed the Milky Way to be caused by "the ignition of the fiery exhalation of some stars which were large, numerous and close together" and that the "ignition takes place in the upper part of the atmosphere, in the region of the world which is continuous with the heavenly motions.“ The . Or…. What is the Difference. And Why Does it Matter?. Defining Archives. Society of American Archivists gives this definition on their website:. (also . archive. ), n. ~ 1. Materials created or received by a person, family, or organization, public or private, in the conduct of their affairs and preserved because of the enduring value contained in the information they contain or as evidence of the functions and responsibilities of their creator, especially those materials maintained using the principles of provenance, original order, and collective control; permanent records. - 2. The division within an organization responsible for maintaining the organization's records of enduring value. - 3. An organization that collects the records of individuals, families, or other organizations; a collecting archives. - 4. The professional discipline of administering such collections and organizations. - 5. The building (or portion thereof) housing archival collections. - 6. A published collection of scholarly papers, especially as a periodical.. Neoplatonist. philosopher . Olympiodorus. the Younger (c. 495–570 AD) criticized this view, arguing that if the Milky Way were sublunary it should appear different at different times and places on the Earth, and that it should have parallax, which it does not. In his view, the Milky Way was celestial. This idea would be influential later in the Islamic world.. Chapter 2. Lesson 1. Studying Geography. Physical maps show land and water features.. Studying Geography. Political maps show the names and borders of countries.. Studying Geography. Special purpose maps show patterns such as climate, natural resources, or population.. The astonishing variety of galaxies derived from a few structural types. Sec 1.3. Irregulars. = misfits in any class. Edwin Hubble . The Realm of the Nebulae . (1936. ). ‘. Tuning Fork’ classification scheme of galaxies. 5 Research-ByEdward KangToo often people imagine that long hours of studying are the best path to being a model straight-A student Yetresearch showsthat highly successful students actually spend less