Problem Set #3
... a. Is your galaxy in solid body rotation? How do you know? b. What is the local rotation speed at your position? c. Is the rotation curve locally flat? How do you know? d. What is the mass of the Galaxy contained within R0? e. Do you think this Galaxy is likely to be more or less massive than the Mi ...
... a. Is your galaxy in solid body rotation? How do you know? b. What is the local rotation speed at your position? c. Is the rotation curve locally flat? How do you know? d. What is the mass of the Galaxy contained within R0? e. Do you think this Galaxy is likely to be more or less massive than the Mi ...
Galactic astronomy - Sierra College Astronomy Home Page
... Pure H & He stars, the first stars born after the Big Bang when very little metals existed. Stellar models tell us that Pop III stars would have been massive, shortlived, and none would have survived to current times. ...
... Pure H & He stars, the first stars born after the Big Bang when very little metals existed. Stellar models tell us that Pop III stars would have been massive, shortlived, and none would have survived to current times. ...
CONSTELLATION CANES VENATICI the two hunting dogs Canes
... voids. It was discovered in 1988 in a deep-sky survey. • Canes Venatici contains five Messier objects, including four galaxies. The more significant are • the Whirlpool Galaxy (M51, NGC 5194) and NGC 5195, a small barred spiral galaxy that is seen face on. This was the first galaxy recognised as hav ...
... voids. It was discovered in 1988 in a deep-sky survey. • Canes Venatici contains five Messier objects, including four galaxies. The more significant are • the Whirlpool Galaxy (M51, NGC 5194) and NGC 5195, a small barred spiral galaxy that is seen face on. This was the first galaxy recognised as hav ...
Lecture24
... Universe is finite in TIME (13.7 billion years) This means that we can only see as far away as light has had time to travel Furthermore stars were not always shining (the sun for example is 4.5 Gyrs old). ...
... Universe is finite in TIME (13.7 billion years) This means that we can only see as far away as light has had time to travel Furthermore stars were not always shining (the sun for example is 4.5 Gyrs old). ...
ppt
... • 25,000 ly away from the center • Moving at about 200 km/s around the center of the Milky Way • TRUMPLER’s (1930) discovery of dust ...
... • 25,000 ly away from the center • Moving at about 200 km/s around the center of the Milky Way • TRUMPLER’s (1930) discovery of dust ...
The Dynamics of the Galaxies in the Local Group
... example of “galaxy formation in action” • What makes this future merger so special, is that it will happen to us! ...
... example of “galaxy formation in action” • What makes this future merger so special, is that it will happen to us! ...
The Milky Way Galaxy is Heading for a Major Cosmic Collision
... Similar to Milky Way (shape, size, mass) One of few galaxies that can be seen with naked eye ...
... Similar to Milky Way (shape, size, mass) One of few galaxies that can be seen with naked eye ...
September 3 and 5 slides
... born! It also left Dubhe 45 years before the light that you see tonight from Merak left Merak. ...
... born! It also left Dubhe 45 years before the light that you see tonight from Merak left Merak. ...
Our Galaxy
... Center of our galaxy and galactic motion 1. Chandra space telescope observe the universe in: a) visible light, b) infrared, c) radio waves, d) x ray 2. Pictures form Chandra space telescope shows there is ____ at the center of our galaxy. A) giant star, b) giant neutron star, c) blackhole, d) anoth ...
... Center of our galaxy and galactic motion 1. Chandra space telescope observe the universe in: a) visible light, b) infrared, c) radio waves, d) x ray 2. Pictures form Chandra space telescope shows there is ____ at the center of our galaxy. A) giant star, b) giant neutron star, c) blackhole, d) anoth ...
The Milky Way as a Spiral galaxy
... compresses the cloud nearby, causing new star formation. 3) The most massive stars become supernovae and the expanding shock waves also cause star formation. 4) Differential rotation then shears these regions into arcs we see as spiral arms. ...
... compresses the cloud nearby, causing new star formation. 3) The most massive stars become supernovae and the expanding shock waves also cause star formation. 4) Differential rotation then shears these regions into arcs we see as spiral arms. ...
All these different energies are classified according to wavelength
... as the dough rises, raisins that were farther apart travel a greater distance in the same time as those that were closer together, raisins are like galaxies in an expanding universe ...
... as the dough rises, raisins that were farther apart travel a greater distance in the same time as those that were closer together, raisins are like galaxies in an expanding universe ...
SWFAS Apr 16 Newsletter - Southwest Florida Astronomical Society
... satellite still has some surprises in store for us. Astronomers had already used Hubble to find hundreds of galaxies that existed less than 1 billion years after the Big Bang, as well as a handful that were around even earlier than that. Now, observations have zeroed in with greater precision than e ...
... satellite still has some surprises in store for us. Astronomers had already used Hubble to find hundreds of galaxies that existed less than 1 billion years after the Big Bang, as well as a handful that were around even earlier than that. Now, observations have zeroed in with greater precision than e ...
star-formation rate
... where the last term specifies the rate of the metals extracted from the ISM in the process of star formation and the first term describes the return of metals to the ISM by stellar evolution processes. ...
... where the last term specifies the rate of the metals extracted from the ISM in the process of star formation and the first term describes the return of metals to the ISM by stellar evolution processes. ...
The evolution of spiral galaxies in clusters Kutdemir, Elif
... of young bulges. Continued gas cooling produces stable disks around these bulges, some of which will later merge to form large spheroidal galaxies (Baugh et al. 1996). Observations of galaxy mergers and signatures of accretion support this picture. Evidence have been accumulating, mainly from HI stu ...
... of young bulges. Continued gas cooling produces stable disks around these bulges, some of which will later merge to form large spheroidal galaxies (Baugh et al. 1996). Observations of galaxy mergers and signatures of accretion support this picture. Evidence have been accumulating, mainly from HI stu ...
PHYS 2410 General Astronomy Homework 8
... IV. the distance from the center of the object to the particle trying to escape. V. the speed of light. ...
... IV. the distance from the center of the object to the particle trying to escape. V. the speed of light. ...
70 Thousand Million, Million, Million Stars in Space
... These contain millions of galaxies and can measure hundreds of millions of light-years across. ...
... These contain millions of galaxies and can measure hundreds of millions of light-years across. ...
Lecture5 - Tufts Institute of Cosmology
... • General Relativity: The Mass-Energy Distribution of the Sun changes the geometry of space-time. The Earth is in free motion (no forces acting on it!) and travels on a geodesic of space-time. But because space-time is curved around the Sun, the Earth orbits the Sun. ...
... • General Relativity: The Mass-Energy Distribution of the Sun changes the geometry of space-time. The Earth is in free motion (no forces acting on it!) and travels on a geodesic of space-time. But because space-time is curved around the Sun, the Earth orbits the Sun. ...
astro2_lec1 - Astronomy & Astrophysics Group
... o Leavitt studied Cepheids in the Large Magellanic Cloud, a satellite galaxy of the Milky Way and known even then to be very distant. o Differences in apparent brightness of LMC Cepheids must be due to differences in intrinsic ...
... o Leavitt studied Cepheids in the Large Magellanic Cloud, a satellite galaxy of the Milky Way and known even then to be very distant. o Differences in apparent brightness of LMC Cepheids must be due to differences in intrinsic ...
A Zoo of Galaxies - Portsmouth Research Portal
... by which we mean just a few 100 million years, and when they are visible in a galaxy the galaxy will look blue because they totally outshine everything else. If star formation ceases, after a short time time all the massive hot blue stars will die, and all that is left in the galaxy will be the less ...
... by which we mean just a few 100 million years, and when they are visible in a galaxy the galaxy will look blue because they totally outshine everything else. If star formation ceases, after a short time time all the massive hot blue stars will die, and all that is left in the galaxy will be the less ...
A Zoo of Galaxies
... by which we mean just a few 100 million years, and when they are visible in a galaxy the galaxy will look blue because they totally outshine everything else. If star formation ceases, after a short time time all the massive hot blue stars will die, and all that is left in the galaxy will be the less ...
... by which we mean just a few 100 million years, and when they are visible in a galaxy the galaxy will look blue because they totally outshine everything else. If star formation ceases, after a short time time all the massive hot blue stars will die, and all that is left in the galaxy will be the less ...
Chapter 17
... The central black hole The center of Since we are located in the outer part of the galaxy, dust between the the galaxy stars blocks out much of the visible light coming from objects in the disk. Because of this, astronomers use infrared and radio telescopes to study our galaxy. They have learned tha ...
... The central black hole The center of Since we are located in the outer part of the galaxy, dust between the the galaxy stars blocks out much of the visible light coming from objects in the disk. Because of this, astronomers use infrared and radio telescopes to study our galaxy. They have learned tha ...
After Dark M S
... In a supernova explosion a single exploding star can produce enough light to rival the luminosity of an entire galaxy. The summer of 2011 has been a summer of relatively nearby supernovas, with one supernova exploding in the Whirlpool Galaxy, M51, at the end of May and a second exploding in the Pinw ...
... In a supernova explosion a single exploding star can produce enough light to rival the luminosity of an entire galaxy. The summer of 2011 has been a summer of relatively nearby supernovas, with one supernova exploding in the Whirlpool Galaxy, M51, at the end of May and a second exploding in the Pinw ...
ISM&Galaxy
... Another issue was: how big is the Galaxy. You need to be able to know the luminosity of stars – even very distant stars… Or perhaps you can make use of globular clusters. Then there is the question of whether there is any absorption between the stars. ...
... Another issue was: how big is the Galaxy. You need to be able to know the luminosity of stars – even very distant stars… Or perhaps you can make use of globular clusters. Then there is the question of whether there is any absorption between the stars. ...
Galaxy Zoo
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies. (e.g.) It is an example of citizen science as it enlists the help of members of the public to help in scientific research. There have been seven versions up to July 2014, which are outlined in this article. Galaxy Zoo is part of the Zooniverse, a group of citizen science projects.