AN INTRODUCTION TO ASTRONOMY Dr. Uri Griv Department of Physics, Ben-Gurion University
... or in q a stellar system PN V = (1/N ) i=1 (vi − v̄)2 where PN v̄ = (1/N ) i=1 vi is the mean velocity and N is the total number of stars • A true MB distribution has a “tail” • Stars will be lost from the cluster • The escape speed ve = 2V ...
... or in q a stellar system PN V = (1/N ) i=1 (vi − v̄)2 where PN v̄ = (1/N ) i=1 vi is the mean velocity and N is the total number of stars • A true MB distribution has a “tail” • Stars will be lost from the cluster • The escape speed ve = 2V ...
A NEWE RADIO TELESCOPE: THE LONG WAVELENGTH ARRAY
... The characteristics of the emitted radiation depend on the kind of object, such as the sun, a planet or molecular cloud, its structure and other physical conditions including temperature, density, magnetism, and composition. To fully understand them, astronomers must investigate these objects over t ...
... The characteristics of the emitted radiation depend on the kind of object, such as the sun, a planet or molecular cloud, its structure and other physical conditions including temperature, density, magnetism, and composition. To fully understand them, astronomers must investigate these objects over t ...
origin of the Solar System
... produced H and He. These elements formed stars which cluster in galaxies with billions of stars; our galaxy, the Milky Way, formed ~ 10 Gy ago. Other elements are synthesized in the interiors of stars such as Red Giants and Supernovae. Upon ejection into interstellar space from dying stars, some ele ...
... produced H and He. These elements formed stars which cluster in galaxies with billions of stars; our galaxy, the Milky Way, formed ~ 10 Gy ago. Other elements are synthesized in the interiors of stars such as Red Giants and Supernovae. Upon ejection into interstellar space from dying stars, some ele ...
Stars and Black Holes: Stars A star is a massive, luminous ball of
... There are _____________ of galaxies in the ______________. Galaxies are ________________: they contain ________, ___________, and _______. The farthest galaxies and the stars we see shining in them may be also the _____________ because it takes the _____________ so long to reach us. ...
... There are _____________ of galaxies in the ______________. Galaxies are ________________: they contain ________, ___________, and _______. The farthest galaxies and the stars we see shining in them may be also the _____________ because it takes the _____________ so long to reach us. ...
To the Stars - LBlackwell
... At night, all the stars that you can see are part of our home galaxy; the Milky Way galaxy. A galaxy is a collection of hundreds of billions of stars held together by gravity. The Hubble Space telescope is able to take pictures of galaxies other than our own. All of these galaxies are moving away fr ...
... At night, all the stars that you can see are part of our home galaxy; the Milky Way galaxy. A galaxy is a collection of hundreds of billions of stars held together by gravity. The Hubble Space telescope is able to take pictures of galaxies other than our own. All of these galaxies are moving away fr ...
Project 2 – Spectral Types of Stars
... Astr 221: General Astronomy II– Star, Galaxies & Cosmology ...
... Astr 221: General Astronomy II– Star, Galaxies & Cosmology ...
Unit 4.4 Bohr`s Model of the Atom Objectives Newton and Light
... • The lowest energy situation for an atom is to have as many electrons as possible in orbits as close to the nucleus as possible. This is called the ground state. • Excited states are any other situation in which one or more electrons are located in orbits further from the nucleus than in the ground ...
... • The lowest energy situation for an atom is to have as many electrons as possible in orbits as close to the nucleus as possible. This is called the ground state. • Excited states are any other situation in which one or more electrons are located in orbits further from the nucleus than in the ground ...
Virtual practice and Spectroscopy lab 3/7/10
... by the Sun's atmosphere absorbing light at certain wavelengths, causing the intensity of the light at this wavelength to drop and appear dark. The atoms and molecules in a gas will absorb only certain wavelengths of light. The pattern of these lines is unique to each element and tells us what elemen ...
... by the Sun's atmosphere absorbing light at certain wavelengths, causing the intensity of the light at this wavelength to drop and appear dark. The atoms and molecules in a gas will absorb only certain wavelengths of light. The pattern of these lines is unique to each element and tells us what elemen ...
Study Notes for Integrated Science Astronomy Unit These notes will
... accelerate away from all points their light is stretched and shifted to the red side of the visible light spectrum. This is a lot like our Balloon Universe Lab. The microwave background radiation that was examined by satellites, KOBE and WMAP, also help us to understand the age and distance of this ...
... accelerate away from all points their light is stretched and shifted to the red side of the visible light spectrum. This is a lot like our Balloon Universe Lab. The microwave background radiation that was examined by satellites, KOBE and WMAP, also help us to understand the age and distance of this ...
Different types of YSOs
... Early solar system consisted of a planetary nebula-dust and gas surrounding protostar and early sun Chondrites & components clearly formed in nebula. Differentiated bodies too? ...
... Early solar system consisted of a planetary nebula-dust and gas surrounding protostar and early sun Chondrites & components clearly formed in nebula. Differentiated bodies too? ...
Milky Way Galaxy
... Milky Way Galaxy Our Sun is a star in the Milky Way Galaxy. If you were looking down on the Milky Way, it would look like a large pinwheel rotating in space. Our Galaxy is a spiral galaxy that formed approximately 14 billion years ago. Contained in the Milky Way are stars, clouds of dust and gas cal ...
... Milky Way Galaxy Our Sun is a star in the Milky Way Galaxy. If you were looking down on the Milky Way, it would look like a large pinwheel rotating in space. Our Galaxy is a spiral galaxy that formed approximately 14 billion years ago. Contained in the Milky Way are stars, clouds of dust and gas cal ...
Document
... Smallest particle of an element is atom, made up of a nucleus (protons and neutrons), and orbiting electrons Electrons and protons attract as opposite electrical charges, NOT gravitationally like planets and Sun ...
... Smallest particle of an element is atom, made up of a nucleus (protons and neutrons), and orbiting electrons Electrons and protons attract as opposite electrical charges, NOT gravitationally like planets and Sun ...
Name: Astronomy Study Guide Part 1 Define Astronomy
... Month- Length of time for the moon to revolve around earth Year- Length of time for Earth to revolve around sun 365.25 days Calendar- years, months, and days based on our celestial objects Leap Year- Feb 29 once every 4 years to make up for our 365.25 day solar year ...
... Month- Length of time for the moon to revolve around earth Year- Length of time for Earth to revolve around sun 365.25 days Calendar- years, months, and days based on our celestial objects Leap Year- Feb 29 once every 4 years to make up for our 365.25 day solar year ...
However the Big Bang theory had some competition…
... sound will be heard because the wavelength is shortened and when a source is moving away from you, a lower pitch sound will be heard because the wavelength is longer. You can hear this effect in the DOPPLER BALL DEMONSTRATION. With light we call this effect red shift and we can observe redshift by l ...
... sound will be heard because the wavelength is shortened and when a source is moving away from you, a lower pitch sound will be heard because the wavelength is longer. You can hear this effect in the DOPPLER BALL DEMONSTRATION. With light we call this effect red shift and we can observe redshift by l ...
Introduction: Where and When Are We in the Universe?
... Sun to us: 8 light minutes A light year is 9½ trillion miles Light year – Distance light travels in a year (not an amount of time) A telescope can be called a time machine Your eye is a time machine o Galactic cluster/group – A few dozen galaxies Clusters – Have hundreds of major galaxie ...
... Sun to us: 8 light minutes A light year is 9½ trillion miles Light year – Distance light travels in a year (not an amount of time) A telescope can be called a time machine Your eye is a time machine o Galactic cluster/group – A few dozen galaxies Clusters – Have hundreds of major galaxie ...
PHYSICS 1500 ASTRONOMY Sample Exam Solutions Section B
... (a) It seems that all Type I supernovae have about the same intrinsic luminosity at their peak. Therefore, if we observe one in a distant galaxy, we can compare its apparent brightness with its expected intrinsic brightness to estimate its distance. This will also be the distance to the galaxy in wh ...
... (a) It seems that all Type I supernovae have about the same intrinsic luminosity at their peak. Therefore, if we observe one in a distant galaxy, we can compare its apparent brightness with its expected intrinsic brightness to estimate its distance. This will also be the distance to the galaxy in wh ...
Introduction Cosmology Cosmetics Cosmetology ..Greek words
... Main features Stars, Galaxies, blackholes etc. (large scale) Protons, electrons etc. (small scale) The in-between are “details” ...
... Main features Stars, Galaxies, blackholes etc. (large scale) Protons, electrons etc. (small scale) The in-between are “details” ...
Space Science Chapter 4 Reading Guide BIG IDEA: Our Sun is
... Why is the corona NOT normally visible? ...
... Why is the corona NOT normally visible? ...
Presentation - Harvard-Smithsonian Center for Astrophysics
... plus UV wavelengths define 1D energy levels in Mg VII ...
... plus UV wavelengths define 1D energy levels in Mg VII ...
05 Applying Spectra and Energy Diagrams to Learn
... make-up of matter. Spectra can be considered as the fingerprints of matter. Every atom emits its own characteristic spectrum of light. The study of spectra has been an important tool for scientists to identify the chemical composition of substances isolated in chemical, biological, and astronomical ...
... make-up of matter. Spectra can be considered as the fingerprints of matter. Every atom emits its own characteristic spectrum of light. The study of spectra has been an important tool for scientists to identify the chemical composition of substances isolated in chemical, biological, and astronomical ...
Introduction to the Universe
... visible light part of the electromagnetic spectrum. What part of the electromagnetic spectrum might the starlight appear to be in now? (A) Gamma ray (B) X ray (C) Ultraviolet (D) Infrared ...
... visible light part of the electromagnetic spectrum. What part of the electromagnetic spectrum might the starlight appear to be in now? (A) Gamma ray (B) X ray (C) Ultraviolet (D) Infrared ...
Astronomical Unit (AU)
... • Hubble then noticed a correlation between the distance of the galaxies and the speed at which they are moving away from us • The farther away the galaxy, the faster it is receding (moving away) from the Earth. ...
... • Hubble then noticed a correlation between the distance of the galaxies and the speed at which they are moving away from us • The farther away the galaxy, the faster it is receding (moving away) from the Earth. ...
ASTRO 1050 Distant Galaxies and the Expanding Universe
... Galaxies form giant groups called “superclusters.” The supercluster closest to our own galaxy can be seen (with a telescope) in the direction of the constellation Virgo. We call this supercluster the Local Supercluster or the Virgo cluster; it is approximately 50 million light years (15 million pars ...
... Galaxies form giant groups called “superclusters.” The supercluster closest to our own galaxy can be seen (with a telescope) in the direction of the constellation Virgo. We call this supercluster the Local Supercluster or the Virgo cluster; it is approximately 50 million light years (15 million pars ...
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.