Introduction to Galaxies - West Jefferson Local Schools
... Well, it turns out that there is another indicator for extreme distances. The Hubble Law The further away a galaxy is, the greater is its redshift. ...
... Well, it turns out that there is another indicator for extreme distances. The Hubble Law The further away a galaxy is, the greater is its redshift. ...
The Milky Way: Spiral galaxies:
... What are the advantages/disadvantages of each? For HI mapping, we observe the radial velocity Vr(r,i). We can convert this to true rotation speed V(r) via the equation Vr(r,i) = Vsys + V(r) sin i cos " where i is the inclination, " the azimuthal angle, and Vsys is the systemic velocity –! Contours o ...
... What are the advantages/disadvantages of each? For HI mapping, we observe the radial velocity Vr(r,i). We can convert this to true rotation speed V(r) via the equation Vr(r,i) = Vsys + V(r) sin i cos " where i is the inclination, " the azimuthal angle, and Vsys is the systemic velocity –! Contours o ...
Does size matter (in the SFRs)?
... sented the results on the SFRs of two small spiral galaxies with very similar HI content but with different size. According to Kennicutt (1998) they both should be galaxies are more the same locations of the graph, and have very similar values of the SFRs. On the contrary of course, UGC 5296 is not ...
... sented the results on the SFRs of two small spiral galaxies with very similar HI content but with different size. According to Kennicutt (1998) they both should be galaxies are more the same locations of the graph, and have very similar values of the SFRs. On the contrary of course, UGC 5296 is not ...
Milky Way Galaxy
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
Galaxies
... Galaxies: The Hubble Law E. Hubble (1913): Distant galaxies are moving away from our Milky way, with a recession velocity, vr, proportional to their distance d: ...
... Galaxies: The Hubble Law E. Hubble (1913): Distant galaxies are moving away from our Milky way, with a recession velocity, vr, proportional to their distance d: ...
Section 6 The Expanding Universe The Doppler Effect
... years or 30,800,000,000,000,000,000 km! Thus the units of the Hubble constant are (km s –1 )/Mpc. As you can imagine from the data in the graph, the value of Hubble’s constant has been a subject of some debate. Initial attempts at calculating the age of the universe found it to be younger than the E ...
... years or 30,800,000,000,000,000,000 km! Thus the units of the Hubble constant are (km s –1 )/Mpc. As you can imagine from the data in the graph, the value of Hubble’s constant has been a subject of some debate. Initial attempts at calculating the age of the universe found it to be younger than the E ...
Module 5 Modelling the universe - Pearson Schools and FE Colleges
... As the density of the gases in a nebula increases, the atoms in them, attracted towards each other, lose potential energy and so gain kinetic energy. This results in an increase in temperature. The sequence of attraction, concentration and increasing internal energy results in a large core of materi ...
... As the density of the gases in a nebula increases, the atoms in them, attracted towards each other, lose potential energy and so gain kinetic energy. This results in an increase in temperature. The sequence of attraction, concentration and increasing internal energy results in a large core of materi ...
PPT
... parallax measurements that build on radar ranging in our solar system – Using parallax and the relationship between luminosity, distance, and brightness, we can calibrate a series of standard candles – We can measure distances greater than 10 billion light years using white dwarf supernovae as stand ...
... parallax measurements that build on radar ranging in our solar system – Using parallax and the relationship between luminosity, distance, and brightness, we can calibrate a series of standard candles – We can measure distances greater than 10 billion light years using white dwarf supernovae as stand ...
2. The Three Pillars of the Big Bang Theory
... in the future, they will be farther apart. We thus encounter one fundamental property of the universe: it is evolving. The universe looked different in the past and will look different in the future. The reader may ask why the cars acquire different initial speeds. This is where our simple analogy b ...
... in the future, they will be farther apart. We thus encounter one fundamental property of the universe: it is evolving. The universe looked different in the past and will look different in the future. The reader may ask why the cars acquire different initial speeds. This is where our simple analogy b ...
20_Testbank
... Answer: We can determine the distance to solar system objects through radar ranging. This gives us an accurate distance to the Sun so that we can use stellar parallax to measure the distances to the nearest stars. The Hyades is an open cluster whose stars are near enough to us that their distances c ...
... Answer: We can determine the distance to solar system objects through radar ranging. This gives us an accurate distance to the Sun so that we can use stellar parallax to measure the distances to the nearest stars. The Hyades is an open cluster whose stars are near enough to us that their distances c ...
ppt
... Space Telescope, astronomers discovered two dust rings in Andromeda's dust disk. They are evidence of an ancient head-on collision with neighboring dwarf galaxy along its polar axis M32 some 210 million years ago. ...
... Space Telescope, astronomers discovered two dust rings in Andromeda's dust disk. They are evidence of an ancient head-on collision with neighboring dwarf galaxy along its polar axis M32 some 210 million years ago. ...
Introduction Introduction to to Astrophysics Astrophysics
... Assignment 2: M31 is moving towards us relative to the Galactic center at a speed of approximately 120 km/s. Its distance to earth is approximately 2 million lightyears. in how many years from now will we collide based on these figures? However, as this motion is accelerated due to gravitational int ...
... Assignment 2: M31 is moving towards us relative to the Galactic center at a speed of approximately 120 km/s. Its distance to earth is approximately 2 million lightyears. in how many years from now will we collide based on these figures? However, as this motion is accelerated due to gravitational int ...
Big Bang Theory
... 1. Check: In the bottom half of the Spectra tab, you should see 10 stellar spectra. If you are missing any, go back to the Stars tab, find the missing star, and record its spectrum. 2. Observe: You can measure redshift by comparing the wavelength of a black absorption line on the star’s spectrum wit ...
... 1. Check: In the bottom half of the Spectra tab, you should see 10 stellar spectra. If you are missing any, go back to the Stars tab, find the missing star, and record its spectrum. 2. Observe: You can measure redshift by comparing the wavelength of a black absorption line on the star’s spectrum wit ...
Calculate the Mass of the Milky Way Galaxy
... motion in addition to the pure expansion. This is referred to as the "cosmic velocity dispersion" or "cosmic scatter" and is probably due to the fact that the gas clouds that formed the galaxies all had some small additional motion of their own. The recessional velocity of a galaxy at a particular d ...
... motion in addition to the pure expansion. This is referred to as the "cosmic velocity dispersion" or "cosmic scatter" and is probably due to the fact that the gas clouds that formed the galaxies all had some small additional motion of their own. The recessional velocity of a galaxy at a particular d ...
Spiral Galaxies - Astronomy Centre
... universes, which are now referred to as galaxies • The word Universe now refers to the full expanse of space and its contents • While most diffuse nebulae are nearby clouds of gas and dust within the Milky Way, the elliptical and spiral nebulae are galaxies located well beyond the limits of the Milk ...
... universes, which are now referred to as galaxies • The word Universe now refers to the full expanse of space and its contents • While most diffuse nebulae are nearby clouds of gas and dust within the Milky Way, the elliptical and spiral nebulae are galaxies located well beyond the limits of the Milk ...
Beyond the Big Bang - Physics Department, Princeton University
... gas of neutral atoms. From that moment on, light traveled freely through the universe. One can imagine using all the astronomical observations that have ever been made to construct a scale model of the optically visible universe in the form of a filled “cosmic sphere” with the Earth at its center. T ...
... gas of neutral atoms. From that moment on, light traveled freely through the universe. One can imagine using all the astronomical observations that have ever been made to construct a scale model of the optically visible universe in the form of a filled “cosmic sphere” with the Earth at its center. T ...
Staring Back to Cosmic Dawn - UC-HiPACC
... capabilities, we wondered if it could detect the faintest candles of creation: the earliest galaxies made of the earliest stars at cosmic dawn, when the universe was less than a billion years old. Those were the hopes of two of us authors (Faber and Ferguson) after NASA astronauts installed HST’s Wi ...
... capabilities, we wondered if it could detect the faintest candles of creation: the earliest galaxies made of the earliest stars at cosmic dawn, when the universe was less than a billion years old. Those were the hopes of two of us authors (Faber and Ferguson) after NASA astronauts installed HST’s Wi ...
Distances in Cosmology One of the most basic measurements that
... the brighter the star is. These are well-understood theoretically and observationally, and played an essential role in Edwin Hubble’s demonstration that the distance to galaxies is proportional to the apparent speed with which they recede from us (more directly, to their redshift, which is the amoun ...
... the brighter the star is. These are well-understood theoretically and observationally, and played an essential role in Edwin Hubble’s demonstration that the distance to galaxies is proportional to the apparent speed with which they recede from us (more directly, to their redshift, which is the amoun ...
Galaxy Notes File
... from a few dozens to thousands of galaxies. The Coma Cluster, shown at right, is 300 million light years from the Milky Way and contains more than 1,000 (and possibly as many as 10,000) galaxies. The Milky Way is a member of a small cluster called the Local Group which contains about 40 galaxies. Th ...
... from a few dozens to thousands of galaxies. The Coma Cluster, shown at right, is 300 million light years from the Milky Way and contains more than 1,000 (and possibly as many as 10,000) galaxies. The Milky Way is a member of a small cluster called the Local Group which contains about 40 galaxies. Th ...
Question paper - Unit A183/02 - Module P7 - Higher tier
... change of momentum = resultant force × time for which it acts work done by a force = force × distance moved in the direction of the force amount of energy transferred = work done change in gravitational potential energy = weight × vertical height difference ...
... change of momentum = resultant force × time for which it acts work done by a force = force × distance moved in the direction of the force amount of energy transferred = work done change in gravitational potential energy = weight × vertical height difference ...
The Great Debate - The Story Behind The Science
... that the Milky Way and the Andromeda Nebula were of a similar size. He arbitrarily assigned each to have a diameter of 120 light-years. By comparing their brightness he concluded the two were about 3800 light-years apart. Most astronomers, however, felt that the Milky Way was far larger than 120 lig ...
... that the Milky Way and the Andromeda Nebula were of a similar size. He arbitrarily assigned each to have a diameter of 120 light-years. By comparing their brightness he concluded the two were about 3800 light-years apart. Most astronomers, however, felt that the Milky Way was far larger than 120 lig ...
File - Mr. Pelton Science
... • Galaxies close together often collide to form strangely shaped galaxies or galaxies with more than one nucleus (Andromeda) ...
... • Galaxies close together often collide to form strangely shaped galaxies or galaxies with more than one nucleus (Andromeda) ...