Galaxies
... arms are wound, with “a” being most tightly wound. The Andromeda Galaxy is an Sb. • Elliptical galaxies are denoted by “E”, with a number from 0-7 indicating how circular it appears. An example of this would be M87, which is an E0 galaxy. • Irregulars, such as the Small Magellanic Cloud, are denoted ...
... arms are wound, with “a” being most tightly wound. The Andromeda Galaxy is an Sb. • Elliptical galaxies are denoted by “E”, with a number from 0-7 indicating how circular it appears. An example of this would be M87, which is an E0 galaxy. • Irregulars, such as the Small Magellanic Cloud, are denoted ...
Galaxies Galaxies M81
... galaxies were referred to as “spiral nebulae” • Believed to be clouds of gas and stars associated with Milky Way. • In 1924 Edwin Hubble measured distance to the “Great Nebula in Andromeda” (M 31) and found its distance to be much larger than the diameter of the Milky Way. Edwin P. Hubble (1889-1953 ...
... galaxies were referred to as “spiral nebulae” • Believed to be clouds of gas and stars associated with Milky Way. • In 1924 Edwin Hubble measured distance to the “Great Nebula in Andromeda” (M 31) and found its distance to be much larger than the diameter of the Milky Way. Edwin P. Hubble (1889-1953 ...
STEPHAN`S QUINTET
... Given that and its apparent size (NGC 7319) of 1.5x1.1 arcmin, it about 150 thousand light years across, and a long arm of ejected material extends another 200 thousand light years or so to its southwest. ...
... Given that and its apparent size (NGC 7319) of 1.5x1.1 arcmin, it about 150 thousand light years across, and a long arm of ejected material extends another 200 thousand light years or so to its southwest. ...
Galaxies and our expanding Universe
... distance obtained by going to the moon, back to earth, then to the moon again. ...
... distance obtained by going to the moon, back to earth, then to the moon again. ...
Galaxy Notes File
... distorting light from individual members of this cluster so that we see a halo effect. ...
... distorting light from individual members of this cluster so that we see a halo effect. ...
Pre-Lab
... Galaxy was derived from the French, Greek, and Latin words for milk. To pre-industrial people, lacking bright lights, the Milky Way, a band of diffuse light stretching across the dark sky, would have been as familiar as the planets and the Moon. This band of stars completely encircles Earth. It is t ...
... Galaxy was derived from the French, Greek, and Latin words for milk. To pre-industrial people, lacking bright lights, the Milky Way, a band of diffuse light stretching across the dark sky, would have been as familiar as the planets and the Moon. This band of stars completely encircles Earth. It is t ...
7.2 Galaxies
... Some galaxies are neither spiral nor elliptical. Those without a regular shape are called irregular galaxies. The distorted form of an irregular galaxy may result because the galaxy collided with another one or got close enough that the gravitational force from the other galaxy drew stars away. ...
... Some galaxies are neither spiral nor elliptical. Those without a regular shape are called irregular galaxies. The distorted form of an irregular galaxy may result because the galaxy collided with another one or got close enough that the gravitational force from the other galaxy drew stars away. ...
No Slide Title - Indiana State University
... • Electrons combine with protons to produce neutrons • Pea size sample weighs 100 million tons • First one discovered in early 1970s Crab nebula (remnant of an A.D. 1054 supernova) ...
... • Electrons combine with protons to produce neutrons • Pea size sample weighs 100 million tons • First one discovered in early 1970s Crab nebula (remnant of an A.D. 1054 supernova) ...
Stellar Pops 2
... • Understanding of photometry in AO corrected images is crucial. • Best age/metallicity diagnostics are for optical and near -IR combinations. • Maybe be better done with NGST (background, psf stability) but crowding could be a key ...
... • Understanding of photometry in AO corrected images is crucial. • Best age/metallicity diagnostics are for optical and near -IR combinations. • Maybe be better done with NGST (background, psf stability) but crowding could be a key ...
Lecture 31
... examined 3C273 (3C=Third Cambridge Catalog of Radio sources) and found its distance from its redshift to be 2 billion light years--not a star, and L = 1040 watts--1,000 L (MW)!! .8 to 14(?) Billion years--distance range. L = 1038-1042 watts. Energy comes from a region solar system-sized. Radio Jets. ...
... examined 3C273 (3C=Third Cambridge Catalog of Radio sources) and found its distance from its redshift to be 2 billion light years--not a star, and L = 1040 watts--1,000 L (MW)!! .8 to 14(?) Billion years--distance range. L = 1038-1042 watts. Energy comes from a region solar system-sized. Radio Jets. ...
The kinematics of Galaxies in Compact Groups
... relation are mostly derived in the inner parts of the galaxy, the agreement does not tell us much about the DM (outer halo). ...
... relation are mostly derived in the inner parts of the galaxy, the agreement does not tell us much about the DM (outer halo). ...
The Classification of Galaxies By Daniel Underwood Contents The
... The History of Galaxy Discovery It was only last century in the 1920s that the presence of certain nebulae outside the Milky Way we realised, and it became universally accepted by astronomers that there were other galaxies than our own in the cosmos. However, it wasn’t immediately recognised that t ...
... The History of Galaxy Discovery It was only last century in the 1920s that the presence of certain nebulae outside the Milky Way we realised, and it became universally accepted by astronomers that there were other galaxies than our own in the cosmos. However, it wasn’t immediately recognised that t ...
Poster - Arkansas Center for Space and Planetary Sciences
... COMBO-17 galaxies not in our set are part of cluster. 2) Careful comparison between Trevese et al.’s cluster & ...
... COMBO-17 galaxies not in our set are part of cluster. 2) Careful comparison between Trevese et al.’s cluster & ...
An analogy
... – distant galaxies are younger than those used to define the Hubble Sequence – more peculiar galaxies are observed: could be due to patchy star formation (younger age) or to interactions being more frequent (denser Universe) – resolution is poor compared to local galaxies and usually limited to a fe ...
... – distant galaxies are younger than those used to define the Hubble Sequence – more peculiar galaxies are observed: could be due to patchy star formation (younger age) or to interactions being more frequent (denser Universe) – resolution is poor compared to local galaxies and usually limited to a fe ...
dekel.eng
... galaxies that are farthest from the center are likely to be moving in elongated, eccentric orbits such that most of their motion is perpendicular to the line of sight. Therefore, they could be moving at high velocities without exhibiting much motion toward or away from the observers. Why this is so ...
... galaxies that are farthest from the center are likely to be moving in elongated, eccentric orbits such that most of their motion is perpendicular to the line of sight. Therefore, they could be moving at high velocities without exhibiting much motion toward or away from the observers. Why this is so ...
PPT - ESO
... The ability of galaxies to continue forming stars is well known to strongly depend on their local environment While isolated field galaxies are mostly star-forming, almost all galaxies in the cores of rich clusters are now passively-evolving ...
... The ability of galaxies to continue forming stars is well known to strongly depend on their local environment While isolated field galaxies are mostly star-forming, almost all galaxies in the cores of rich clusters are now passively-evolving ...
Powerpoint
... Shapley used distances to variable “RR Lyrae” stars (a kind of Horizontal Branch star) in Globular Clusters to determine that Sun was 16 kpc from center of Milky Way. Modern value 8 kpc. ...
... Shapley used distances to variable “RR Lyrae” stars (a kind of Horizontal Branch star) in Globular Clusters to determine that Sun was 16 kpc from center of Milky Way. Modern value 8 kpc. ...
TF_final3 - Arecibo Observatory
... are different to normal galaxies in the fact that they emit 90% of their light i in infrared. The TullyFisher relation states that the bigger the galaxy is, the faster it rotates. The faster the galaxy rotates, the wider is the emission line in velocity. Also, the bigger the galaxy, the more is its ...
... are different to normal galaxies in the fact that they emit 90% of their light i in infrared. The TullyFisher relation states that the bigger the galaxy is, the faster it rotates. The faster the galaxy rotates, the wider is the emission line in velocity. Also, the bigger the galaxy, the more is its ...
Lecture - Ann Arbor Earth Science
... area of the sky near Ursa Major for 10 days. It produced this picture. Almost all the objects in this photograph are galaxies that are located between 5 and 10 billion light years away from Earth. Younger galaxies are blue while older galaxies are red in color. ...
... area of the sky near Ursa Major for 10 days. It produced this picture. Almost all the objects in this photograph are galaxies that are located between 5 and 10 billion light years away from Earth. Younger galaxies are blue while older galaxies are red in color. ...
z - STScI
... over HST comparable to the advance of HST • NGST can observe – Acceleration/deceleration of expanding universe – Cosmic dark matter – First luminous objects after Big Bang, even if much ...
... over HST comparable to the advance of HST • NGST can observe – Acceleration/deceleration of expanding universe – Cosmic dark matter – First luminous objects after Big Bang, even if much ...
Chapter 8, Astronomy Lesson 5, Galaxies and Beyond Objectives
... Is a constellation a natural grouping of stars? ______________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ In what way are s ...
... Is a constellation a natural grouping of stars? ______________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ In what way are s ...
Integrative Studies 410 Our Place in the Universe
... – Solar System: the orbital velocities of planets determined by mass of Sun – Galaxy: orbital velocities of stars are determined by total mass of the galaxy contained within that star’s orbit ...
... – Solar System: the orbital velocities of planets determined by mass of Sun – Galaxy: orbital velocities of stars are determined by total mass of the galaxy contained within that star’s orbit ...
Atlas of Peculiar Galaxies
The Atlas of Peculiar Galaxies is a catalog of peculiar galaxies produced by Halton Arp. A total of 338 galaxies are presented in the atlas, which was originally published in 1966 by the California Institute of Technology.The primary goal of the catalog was to present photographs of examples of the different kinds of peculiar structures found among nearby galaxies. Arp realized that the reason why galaxies formed into spiral or elliptical shapes was not well understood. He perceived peculiar galaxies as small ""experiments"" that astronomers could use to understand the physical processes that distort spiral or elliptical galaxies. With this atlas, astronomers had a sample of peculiar galaxies that they could study in more detail. The atlas does not present a complete overview of every peculiar galaxy in the sky but instead provides examples of the different phenomena as observed in nearby galaxies.Because little was known at the time of publication about the physical processes that caused the different shapes, the galaxies in the atlas are sorted based on their appearance. Objects 1–101 are individual peculiar spiral galaxies or spiral galaxies that apparently have small companions. Objects 102–145 are elliptical and elliptical-like galaxies. Individual or groups of galaxies with neither elliptical nor spiral shapes are listed as objects 146–268. Objects 269–327 are double galaxies. Finally, objects that simply do not fit into any of the above categories are listed as objects 332–338. Most objects are best known by their other designations, but a few galaxies are best known by their Arp numbers (such as Arp 220).Today, the physical processes that lead to the peculiarities seen in the Arp atlas are now well understood. A large number of the objects are interacting galaxies, including M51 (Arp 85), Arp 220, and the Antennae Galaxies (NGC 4038/NGC 4039, or Arp 244). A few of the galaxies are simply dwarf galaxies that do not have enough mass to produce enough gravity to allow the galaxies to form any cohesive structure. NGC 1569 (Arp 210) is an example of one of the dwarf galaxies in the atlas. A few other galaxies are radio galaxies. These objects contain active galactic nuclei that produce powerful jets of gas called radio jets. The atlas includes the nearby radio galaxies M87 (Arp 152) and Centaurus A (Arp 153).