Digital Universe Guide - Hayden Planetarium

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26 3. THE MILKY WAY ATLAS Group See Name Page Description (Table Continued) mwVis 111 Visible all-sky survey mwH 113 Atomic hydrogen all-sky survey mwCO 114 Carbon monoxide all-sky survey mwFIR 115 The far-infrared all-sky survey mwIRASc 117 The IRAS composite all-sky survey mw2MASS 119 The 2MASS all-sky survey mwHa 120 The hydrogen-alpha all-sky survey mwGamma 122 Gamma-ray all-sky survey dso 124 “Deep-sky” images sloanstars 140 Sloan Digital Sky Survey Stars galaxy 127 An exterior image for the Milky Way starorbits 142 One-billion-year stellar orbits bar 129 The Galactic bar bulge 130 The central bulge of the Galaxy halo 131 The Galactic halo lgrp 132 Local Group of galaxies solsys 133 Planetary orbits of the Solar System probes 135 Pioneer and Voyager spacecraft trajectories 1lmo 137 Grid centered on the Sun extending to 1 light-month 1ly 137 Grid centered on the Sun extending to 1 light-year 10ly 137 Grid centered on the Sun extending to 10 light-years 100ly 137 Grid centered on the Sun extending to 100 light-years 1kly 137 Grid centered on the Sun extending to 1,000 light-years 10kly 137 Grid centered on the Sun extending to 10,000 light-years galGrid 139 100,000-light-year grid centered on the Milky Way
3.2. MILKY WAY ATLAS TUTORIAL 27 3.2 Milky Way Atlas Tutorial The Milky Way tutorial is designed to introduce you to the Milky Way in segments that lend themselves to the scale and structure of our Galaxy. Each tutorial covers the science, the data, and Partiview’s user interface and selected commands. Complete information on each data group can be found in “Milky Way Data Groups.” Each tutorial will tell you what to turn on before starting and what data groups and commands you will use in the tutorial. Let’s start with the view from Earth. 3.2.1 The View from Earth We begin with what may be familiar: the night sky. Each tutorial in this section focuses on how to view the Atlas from one place, Earth. In reality, the Earth-Sun distance is negligibly small in the parsec-scaled Milky Way Atlas (the Earth-Sun distance is about 93 million miles, or 0.00000485 parsecs), so the Earth and Sun are synonymous with one another when we discuss their position in the Atlas. Of course, there is no daytime sky in the Digital Universe—Partiview is not a planetarium simulator. Partiview cannot show you when stars rise and set or where the planets are. Rather, its strength lies in giving context to the objects that make up our Galaxy, tapping into its data visualization roots. Now, let’s begin by launching the Digital Universe’s Milky Way Atlas. Tutorial: Learning to Fly Goals: To learn basic functions and review navigation. Before starting, turn on: stars, mwVis You will be using: no additional groups Your Initial Location When you launch the Milky Way Atlas, the preset position has you looking toward the constellation Orion, with the stars Sirius and Procyon in the foreground. The size of their labels is proportional to their distance from you, so you can gauge the distance of objects based on their label size. But from where are you viewing these stars?
Page 1 and 2: The Digital Universe Guide Brian Ab
Page 3 and 4: Contents Contents 3 List of Tables
Page 5 and 6: List of Tables 2.1 Log and Linear F
Page 7 and 8: 1.2. GETTING HELP 7 1.2 Getting Hel
Page 9 and 10: 1.5. ACKNOWLEDGMENTS 9 1.5 Acknowle
Page 11 and 12: 2.2. LAUNCHING THE MILKY WAY ATLAS
Page 13 and 14: 2.3. LEARNING TO FLY PARTIVIEW 13 T
Page 15 and 16: 2.3. LEARNING TO FLY PARTIVIEW 15 M
Page 17 and 18: 2.4. PARTIVIEW’S USER INTERFACE 1
Page 23 and 24: 2.5. DIGITAL UNIVERSE FILES 23 File
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3.3. MILKY WAY DATA GROUPS 77 If yo
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3.3. MILKY WAY DATA GROUPS 79 lumin
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3.3. MILKY WAY DATA GROUPS 81 not p
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3.3. MILKY WAY DATA GROUPS 83 Two p
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3.3. MILKY WAY DATA GROUPS 85 expre
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3.3. MILKY WAY DATA GROUPS 87 marke
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3.3. MILKY WAY DATA GROUPS 89 brigh
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3.3. MILKY WAY DATA GROUPS 91 3.3.1
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3.3. MILKY WAY DATA GROUPS 93 inclu
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3.3. MILKY WAY DATA GROUPS 95 old.
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3.3. MILKY WAY DATA GROUPS 97 centi
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3.3. MILKY WAY DATA GROUPS 99 3.3.1
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3.3. MILKY WAY DATA GROUPS 101 3.3.
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3.3. MILKY WAY DATA GROUPS 103 heat
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3.3. MILKY WAY DATA GROUPS 107 righ
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3.3. MILKY WAY DATA GROUPS 121 Othe
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3.3. MILKY WAY DATA GROUPS 141 this
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3.3. MILKY WAY DATA GROUPS 143 Not
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4 The Extragalactic Atlas The word
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4.1. EXTRAGALACTIC ATLAS OVERVIEW 1
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4.2. EXTRAGALACTIC ATLAS TUTORIAL 1
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4.3. EXTRAGALACTIC DATA GROUPS 169
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4.4. OPTIMIZING THE EXTRAGALACTIC A
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Appendix A Light-Travel Time and Di
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Appendix B Parallax and Distance On
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absolute magnitude M, can be calcul
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discovered that there was a linear
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Appendix D Electromagnetic Spectrum
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Appendix E Constants and Units In a
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Metric Prefixes These prefixes are
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INDEX 221 center command, 50, 61 cl
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INDEX 223 Earth’s radio signals,
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INDEX 225 irregular galaxy, 147, 17
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INDEX 227 entering, 21 every, 206 j
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INDEX 229 stellar distance uncertai
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Digital Universe Guide - Hayden Planetarium

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