Unit 1
... fuzzy and diffuse, due to the vast separation between the Sun and the observed galaxy, as well as the separation between the stars of that galaxy! – The paleness of visible light from distant galaxies is called the surface brightness. ...
... fuzzy and diffuse, due to the vast separation between the Sun and the observed galaxy, as well as the separation between the stars of that galaxy! – The paleness of visible light from distant galaxies is called the surface brightness. ...
Astronomy 104: Homework Set 5 Due: Monday, March 16, 2015
... Keeping in mind that the Bulge of our Galaxy has a power-law slope of about −4 and the Halo has a power-law slope of about −3, which density profile from the table, number 1 or number 2, is most likely from the galaxy’s bulge population, and which is most likely from its halo? d) At what radius from ...
... Keeping in mind that the Bulge of our Galaxy has a power-law slope of about −4 and the Halo has a power-law slope of about −3, which density profile from the table, number 1 or number 2, is most likely from the galaxy’s bulge population, and which is most likely from its halo? d) At what radius from ...
Evening sky in NOVEMBER 2011 The Andromeda Galaxy, approx
... Evening sky in NOVEMBER 2011 The Andromeda Galaxy, approx 2.3 million light years away, is the furthest object visible to the naked eye. Use the four stars of the Square of Pegasus above the northern horizon to locate it. Draw a diagonal line from the top left star to the bottom right and carry on a ...
... Evening sky in NOVEMBER 2011 The Andromeda Galaxy, approx 2.3 million light years away, is the furthest object visible to the naked eye. Use the four stars of the Square of Pegasus above the northern horizon to locate it. Draw a diagonal line from the top left star to the bottom right and carry on a ...
Descriptions For Posters
... Cassiopeia A is a supernova remnant at distance 11,000 light-years in our galaxy in the consellation Cassiopeia. The original star, about 15 to 20 times more massive than our sun, died in a cataclysmic "supernova" explosion relatively recently in our own Milky Way galaxy. Pandora’s Cluster The giant ...
... Cassiopeia A is a supernova remnant at distance 11,000 light-years in our galaxy in the consellation Cassiopeia. The original star, about 15 to 20 times more massive than our sun, died in a cataclysmic "supernova" explosion relatively recently in our own Milky Way galaxy. Pandora’s Cluster The giant ...
How many stars are in the Milky Way Galaxy?
... 1: Draw and label diagrams of the Milky Way from top and side views, showing the major components. Indicate the approximate dimensions of the components and note the location of the Sun in each diagram. 2: Describe the galactic distribution of general interstellar material, nebulae, and open and glo ...
... 1: Draw and label diagrams of the Milky Way from top and side views, showing the major components. Indicate the approximate dimensions of the components and note the location of the Sun in each diagram. 2: Describe the galactic distribution of general interstellar material, nebulae, and open and glo ...
The Spiral Galaxy Messier 81 - Cool Cosmos
... to our Milky Way galaxy. Because it is so close compared to most other galaxies, M81 gives astronomers an opportunity to study the properties of a spiral galaxy in great detail. Using data from highly sensitive infrared instruments, this Spitzer image shows us old stars, interstellar dust heated by ...
... to our Milky Way galaxy. Because it is so close compared to most other galaxies, M81 gives astronomers an opportunity to study the properties of a spiral galaxy in great detail. Using data from highly sensitive infrared instruments, this Spitzer image shows us old stars, interstellar dust heated by ...
Astronomy Facts
... The brightest stars are over 10,000 times brighter than the sun. The distance to our nearest large galaxy, Andromeda (2.9 million light years), is about 29- times the Milky Way’s diameter (100 thousand light years). If your fist were the Milky Way, hold it high over your head - Andromeda would be an ...
... The brightest stars are over 10,000 times brighter than the sun. The distance to our nearest large galaxy, Andromeda (2.9 million light years), is about 29- times the Milky Way’s diameter (100 thousand light years). If your fist were the Milky Way, hold it high over your head - Andromeda would be an ...
Galaxy1
... • M 82 is smaller than M 81 yet it is producing stars at an enormous rate. Ten times faster than the Milky Way is producing stars. • Most of the erupted gas is coming from supernova explosions. This is star formation on steroids. • Why do you think this little galaxy is producing stars so rapidly? ...
... • M 82 is smaller than M 81 yet it is producing stars at an enormous rate. Ten times faster than the Milky Way is producing stars. • Most of the erupted gas is coming from supernova explosions. This is star formation on steroids. • Why do you think this little galaxy is producing stars so rapidly? ...
The Universe and Galaxies - West Jefferson Local Schools
... - ________ - grouping of millions or billions of stars, and dust and gas held together by gravity - there are an estimated ________ billion galaxies in the universe A. 3 Types of Galaxies - classified by ________ 1. ________ - disk shaped with spiral arms of dust and gas (fig 26-15, pg. 831) - dust ...
... - ________ - grouping of millions or billions of stars, and dust and gas held together by gravity - there are an estimated ________ billion galaxies in the universe A. 3 Types of Galaxies - classified by ________ 1. ________ - disk shaped with spiral arms of dust and gas (fig 26-15, pg. 831) - dust ...
Galaxies
... light that has a longer wavelength than it had when it was emitted (a redshift), while observers looking at an approaching source see light that is shifted to shorter wavelength (a blueshift). ...
... light that has a longer wavelength than it had when it was emitted (a redshift), while observers looking at an approaching source see light that is shifted to shorter wavelength (a blueshift). ...
Study Guide Ch10,11 and 12
... 2. How is the mass of the Milky Way measured, and how does this lead to the concept of dark matter? 3. How are the spiral arms of the Milky Way detected, and what is their nature? 4. Discuss the reason for the differences between population I and population II stars. 5. Describe the characteristics ...
... 2. How is the mass of the Milky Way measured, and how does this lead to the concept of dark matter? 3. How are the spiral arms of the Milky Way detected, and what is their nature? 4. Discuss the reason for the differences between population I and population II stars. 5. Describe the characteristics ...
Positions in the Solar System
... of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
... of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
Position in Solar System ppt
... of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
... of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
Slide 1
... of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
... of the formation of the universe is the Big Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
Andromeda Galaxy
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The Andromeda Galaxy (/ænˈdrɒmɨdə/), also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth. It is the nearest major galaxy to the Milky Way and was often referred to as the Great Andromeda Nebula in older texts. It received its name from the area of the sky in which it appears, the constellation of Andromeda, which was named after the mythological princess Andromeda. Being approximately 220,000 light years across, it is the largest galaxy of the Local Group, which also contains the Milky Way, the Triangulum Galaxy, and about 44 other smaller galaxies.The Andromeda Galaxy is the most massive galaxy in the Local Group as well. Despite earlier findings that suggested that the Milky Way contains more dark matter and could be the most massive in the grouping, the 2006 observations by the Spitzer Space Telescope revealed that Andromeda contains one trillion (1012) stars: at least twice the number of stars in the Milky Way, which is estimated to be 200–400 billion.The Andromeda Galaxy is estimated to be 1.5×1012 solar masses, while the mass of the Milky Way is estimated to be 8.5×1011 solar masses. In comparison, a 2009 study estimated that the Milky Way and M31 are about equal in mass, while a 2006 study put the mass of the Milky Way at ~80% of the mass of the Andromeda Galaxy. The Milky Way and Andromeda are expected to collide in 3.75 billion years, eventually merging to form a giant elliptical galaxy or perhaps a large disk galaxy.At 3.4, the apparent magnitude of the Andromeda Galaxy is one of the brightest of any of the Messier objects, making it visible to the naked eye on moonless nights even when viewed from areas with moderate light pollution. Although it appears more than six times as wide as the full Moon when photographed through a larger telescope, only the brighter central region is visible to the naked eye or when viewed using binoculars or a small telescope and would it hence appear to be but another star.