Section 28.2 - CPO Science
... their shape. 1. Spiral galaxies consist of a central, dense area surrounded by spiraling arms. 2. Barred spiral galaxies have a bar-shaped structure in the center. 3. Elliptical galaxies look like the central portion of a spiral galaxy without the arms. 4. Lenticular galaxies are lens-shaped. ...
... their shape. 1. Spiral galaxies consist of a central, dense area surrounded by spiraling arms. 2. Barred spiral galaxies have a bar-shaped structure in the center. 3. Elliptical galaxies look like the central portion of a spiral galaxy without the arms. 4. Lenticular galaxies are lens-shaped. ...
The Milky Way Galaxy
... spheroid. A massive black hole marks the center of the Galaxy. The (Our) Sun sits far out in the disc and in visible light. Our view of the Galaxy is limited by interstellar dust. Consequently, the large-scale structure of the Galaxy must be inferred from observations made at infrared and radio wave ...
... spheroid. A massive black hole marks the center of the Galaxy. The (Our) Sun sits far out in the disc and in visible light. Our view of the Galaxy is limited by interstellar dust. Consequently, the large-scale structure of the Galaxy must be inferred from observations made at infrared and radio wave ...
Week8Lecture1
... Black Hole at the GC? These stars are very close to the galactic center. The orbit on the right is the best fit; it assumes a central black hole of 3.7 ...
... Black Hole at the GC? These stars are very close to the galactic center. The orbit on the right is the best fit; it assumes a central black hole of 3.7 ...
public_lector_10
... The dark halo was built up from mergers of smaller sub-halos Saw spiral structure developing in the gas Merging of galaxies is still going on now ...
... The dark halo was built up from mergers of smaller sub-halos Saw spiral structure developing in the gas Merging of galaxies is still going on now ...
2P24.pdf
... UCM0043-0159 is a Sc+ galaxy where recent star formation is taking place simultaneously in the nucleus and in several bursts placed in the spiral arms. The global burst strength is small (0.5%). Thanks to the IFU spectroscopy, we can perform a stellar populations analysis for every knot. In this way ...
... UCM0043-0159 is a Sc+ galaxy where recent star formation is taking place simultaneously in the nucleus and in several bursts placed in the spiral arms. The global burst strength is small (0.5%). Thanks to the IFU spectroscopy, we can perform a stellar populations analysis for every knot. In this way ...
AST 207 Test 3 23 November 2009
... c. (3 pts.) Imagine a galaxy X. Galaxy X has four times as much mass as NGC 3672 at every point, but Galaxy X is the same as NGC3672 in all other respects. Find the value of the Doppler speed for Galaxy X along the major axis at 15 kpc from the center. 2. The galaxy cluster 0024+1654. In the spectru ...
... c. (3 pts.) Imagine a galaxy X. Galaxy X has four times as much mass as NGC 3672 at every point, but Galaxy X is the same as NGC3672 in all other respects. Find the value of the Doppler speed for Galaxy X along the major axis at 15 kpc from the center. 2. The galaxy cluster 0024+1654. In the spectru ...
Our galaxy, the Milky Way, has about 3 billion solar masses of HI
... hydrogen clouds around the center of the galaxy can be deduced. With these two pieces of information the orbital velocity equation can be used to determine the mass of the galaxy within each clouds orbital radius. 9. What is the name for our galaxy and what kind of galaxy is it? Our galaxy is called ...
... hydrogen clouds around the center of the galaxy can be deduced. With these two pieces of information the orbital velocity equation can be used to determine the mass of the galaxy within each clouds orbital radius. 9. What is the name for our galaxy and what kind of galaxy is it? Our galaxy is called ...
This document was created for people who do not have access to
... This is a "late-blooming" galaxy, a small, distorted system of gas and stars that still appears to be in the process of development, even though most of its galactic cousins are believed to have started forming billions of years ago. Evidence of the galaxy's youthfulness can be seen in the burst of ...
... This is a "late-blooming" galaxy, a small, distorted system of gas and stars that still appears to be in the process of development, even though most of its galactic cousins are believed to have started forming billions of years ago. Evidence of the galaxy's youthfulness can be seen in the burst of ...
Properties of Ellipticals and Spirals
... the arms are star forming regions. The massive, hot, young and luminous stars dominate the overall light, thus giving it a bluish hue. The bright yellowish looking regions, mostly the bulge, also have some young stars, however, since there is relatively more dust in the bulge, we see only the longer ...
... the arms are star forming regions. The massive, hot, young and luminous stars dominate the overall light, thus giving it a bluish hue. The bright yellowish looking regions, mostly the bulge, also have some young stars, however, since there is relatively more dust in the bulge, we see only the longer ...
Document
... “The presence of interstellar gas can be seen when you look at the spectral lines of a binary star system. Among the broad lines that shift as the two stars orbit each other, you see narrow lines that do not move. The narrow lines are from much colder gas in the interstellar medium between us and t ...
... “The presence of interstellar gas can be seen when you look at the spectral lines of a binary star system. Among the broad lines that shift as the two stars orbit each other, you see narrow lines that do not move. The narrow lines are from much colder gas in the interstellar medium between us and t ...
The resolved stellar populations of M32 Monachesi, Antonela
... are basically made of old populations of stars. Spiral galaxies have both very young and old stars. Their spiral arms have large amounts of gas and dust. As a consequence, new stars are constantly forming in different areas. The central bulge of a spiral galaxy is primarily composed of old stars. El ...
... are basically made of old populations of stars. Spiral galaxies have both very young and old stars. Their spiral arms have large amounts of gas and dust. As a consequence, new stars are constantly forming in different areas. The central bulge of a spiral galaxy is primarily composed of old stars. El ...
Universe, Galaxies, Solar System
... Many scientists believe the Universe formed about 13.8 billion years ago. It is thought that the Universe started as a single point of extremely dense mass about the size of a dime, and when the energy could not be contained anymore, it expanded into the Universe we ...
... Many scientists believe the Universe formed about 13.8 billion years ago. It is thought that the Universe started as a single point of extremely dense mass about the size of a dime, and when the energy could not be contained anymore, it expanded into the Universe we ...
Systematics of Galaxy Properties and Scaling Relations Ay 127
... – Ellipticals and early type spirals formed most of their stars early on (used up their gas, have older/redder stars) ...
... – Ellipticals and early type spirals formed most of their stars early on (used up their gas, have older/redder stars) ...
Galaxy interactions - collisions Many stars are thrown out into space
... Starburst galaxies Some galaxies are undergoing very high rates of star formation The Milky Way produces roughly one new star each year These galaxies may produce more than 100 new stars per year – a rate that will use up all the gas and dust in a few hundred million years Star formation would then ...
... Starburst galaxies Some galaxies are undergoing very high rates of star formation The Milky Way produces roughly one new star each year These galaxies may produce more than 100 new stars per year – a rate that will use up all the gas and dust in a few hundred million years Star formation would then ...
Mean Cut for formation
... of 46,748 luminous red galaxies from the Sloan Digital Sky Survey. The survey region covers 0.72 h-3 Gpc3 over 3816 deg2 and 0.16
... of 46,748 luminous red galaxies from the Sloan Digital Sky Survey. The survey region covers 0.72 h-3 Gpc3 over 3816 deg2 and 0.16
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.