UNIT 4 - Galaxies XIV. The Milky Way A. Structure
... radio sources with star-like visible objects - quasi-stellar radio sources (quasars) unusual spectrum - lines are redshifted cannot be stars - redshift indicates that these objects are very distant (from the early universe) their great distance implies these are the brightest objects known in the un ...
... radio sources with star-like visible objects - quasi-stellar radio sources (quasars) unusual spectrum - lines are redshifted cannot be stars - redshift indicates that these objects are very distant (from the early universe) their great distance implies these are the brightest objects known in the un ...
Winter - Dark Sky Discovery
... The plough is perhaps the most easily recognised group of stars in the northern sky and it is a very useful ‘skymark’. The plough is always above the horizon and allows us to find Polaris, or the Pole Star. If you imagine the plough as a saucepan, then you can follow the two stars furthest from the ...
... The plough is perhaps the most easily recognised group of stars in the northern sky and it is a very useful ‘skymark’. The plough is always above the horizon and allows us to find Polaris, or the Pole Star. If you imagine the plough as a saucepan, then you can follow the two stars furthest from the ...
A solution to Maxwell`s equations in free space
... In a wave, the fields change with time. Therefore the Poynting vector changes too!!The direction is constant, but the magnitude changes from 0 to a maximum ...
... In a wave, the fields change with time. Therefore the Poynting vector changes too!!The direction is constant, but the magnitude changes from 0 to a maximum ...
No. 35 - Institute for Astronomy
... the door to this new way of learning about them. My research group is leading an international effort known as the Gemini NICI Planet-Finding Campaign to expand the census of exoplanets detected by direct imaging. NICI (the Near-Infrared Coronagraphic Imager) is a powerful new instrument installed o ...
... the door to this new way of learning about them. My research group is leading an international effort known as the Gemini NICI Planet-Finding Campaign to expand the census of exoplanets detected by direct imaging. NICI (the Near-Infrared Coronagraphic Imager) is a powerful new instrument installed o ...
Light Bulbs
... Electricity excites gas molecules in light bulb Most energy is converted into visible light instead of heat. Mercury is highly toxic chemical ...
... Electricity excites gas molecules in light bulb Most energy is converted into visible light instead of heat. Mercury is highly toxic chemical ...
File
... Why do the Sun and the stars appear to move? Here’s an easy answer…they’re not moving, _____ are. The Earth is rotating on its axis as it revolves around the Sun. Notice the stars in the picture seem to be rotating around a center. At the center is the star _______________, or the North Star. We cal ...
... Why do the Sun and the stars appear to move? Here’s an easy answer…they’re not moving, _____ are. The Earth is rotating on its axis as it revolves around the Sun. Notice the stars in the picture seem to be rotating around a center. At the center is the star _______________, or the North Star. We cal ...
Lec10_2D
... Now the spaceship is moving. To you, the ship is standing still, and light still takes 1 second to go the length of the ship. But to someone outside, the light has traveled more than one rocket ship length. Therefore, more than 1 second has elapsed. ...
... Now the spaceship is moving. To you, the ship is standing still, and light still takes 1 second to go the length of the ship. But to someone outside, the light has traveled more than one rocket ship length. Therefore, more than 1 second has elapsed. ...
A Sense of Scale and The Motions of Earth The guitar player
... The first thing to remember is that the groupings of stars that most people call constellations are not actual objects! They are `maps’ for the sky. In fact, the original constellations were invented by farmers over 5000 years ago. ...
... The first thing to remember is that the groupings of stars that most people call constellations are not actual objects! They are `maps’ for the sky. In fact, the original constellations were invented by farmers over 5000 years ago. ...
File
... 7. What is a Jet Stream? Fast moving air that pushes the weather from West to East. 8. What is the Mesosphere? Coldest layer of the atmosphere temperatures reach a minimum of -100 degrees Celsius. Most meteors burn up in the mesosphere. 9. What is the Thermosphere? The temperature here increases due ...
... 7. What is a Jet Stream? Fast moving air that pushes the weather from West to East. 8. What is the Mesosphere? Coldest layer of the atmosphere temperatures reach a minimum of -100 degrees Celsius. Most meteors burn up in the mesosphere. 9. What is the Thermosphere? The temperature here increases due ...
Dust and Molecules in Early Galaxies
... small because the H2 is a diatomic molecule of two identical nuclei, and has no allowed dipole transitions. ...
... small because the H2 is a diatomic molecule of two identical nuclei, and has no allowed dipole transitions. ...
Document
... Summary of studied physical processes using the combined SWF-WV algorithm • Sun observations: detection of parametric resonance in the solar corona, studying of plasma heating in the magnetic loops, investigation of low-frequency modulations of inductively coupled close loops, studying of loops eig ...
... Summary of studied physical processes using the combined SWF-WV algorithm • Sun observations: detection of parametric resonance in the solar corona, studying of plasma heating in the magnetic loops, investigation of low-frequency modulations of inductively coupled close loops, studying of loops eig ...
Discrete surveys: past, present and future
... 95 out of 100 orders leaves lots of discovery space ...
... 95 out of 100 orders leaves lots of discovery space ...
Star Life Cycle Powerpoin
... • When a massive Red Giant fuses all of the helium into carbon, fusion stops and the outer layers collapse on the core. ...
... • When a massive Red Giant fuses all of the helium into carbon, fusion stops and the outer layers collapse on the core. ...
Galaxy interaction and transformation
... The properties of such merger remnants are important to understand. If we know how merger remnants behave, we can look for merger signatures and estimate how many mergers have occurred during the history of the universe. More importantly, the study of the structure of merger remnants can help us to ...
... The properties of such merger remnants are important to understand. If we know how merger remnants behave, we can look for merger signatures and estimate how many mergers have occurred during the history of the universe. More importantly, the study of the structure of merger remnants can help us to ...
Summary - Chandra X
... Mdot does not uniquely determine spectral state at high luminosities. Peak luminosity is determined by hard to soft transition luminosity. Brighter sources show flaring, resulting in additional structure in hardness-intensity diagram. Associated with steep power law state. This and intermediate “sta ...
... Mdot does not uniquely determine spectral state at high luminosities. Peak luminosity is determined by hard to soft transition luminosity. Brighter sources show flaring, resulting in additional structure in hardness-intensity diagram. Associated with steep power law state. This and intermediate “sta ...
The Sun…the star in the solar system
... Question for SGU graduates (or anybody else): what kind of star is the Sun? 18 Scorpii… The “solar twin” ...
... Question for SGU graduates (or anybody else): what kind of star is the Sun? 18 Scorpii… The “solar twin” ...
Document
... Reflection (T.I.R.) 1. Light must pass from a more optically dense to less optically dense medium. 2. There are only specific angles of incidence, called the critical angle, which is different for each medium. ...
... Reflection (T.I.R.) 1. Light must pass from a more optically dense to less optically dense medium. 2. There are only specific angles of incidence, called the critical angle, which is different for each medium. ...
visible spectroscopy - Purdue University Chemistry Department
... VISIBLE SPECTROSCOPY PURDUE UNIVERSITY INSTRUMENT VAN PROJECT DEMYSTIFICATION OF THE SPECTRONIC EDUCATOR Revised 3-7-96 I. How Does the Spectronic Educator work? The Spectronic educator is designed to emit different wavelengths of light. You may select specific wavelengths of light by turning the wa ...
... VISIBLE SPECTROSCOPY PURDUE UNIVERSITY INSTRUMENT VAN PROJECT DEMYSTIFICATION OF THE SPECTRONIC EDUCATOR Revised 3-7-96 I. How Does the Spectronic Educator work? The Spectronic educator is designed to emit different wavelengths of light. You may select specific wavelengths of light by turning the wa ...
Lecture 33: The Lives of Stars Astronomy 141
... Red Giants, then leave behind a White Dwarf. Very high-mass stars have very short lives, spend a short time as red supergiants, then explode as a supernova. ...
... Red Giants, then leave behind a White Dwarf. Very high-mass stars have very short lives, spend a short time as red supergiants, then explode as a supernova. ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.