Slide 1
... Quasars were first identified as being high redshift sources of electromagnetic energy, including radio waves and visible light, that were point-like, similar to stars, rather than extended sources similar to galaxies. ...
... Quasars were first identified as being high redshift sources of electromagnetic energy, including radio waves and visible light, that were point-like, similar to stars, rather than extended sources similar to galaxies. ...
Galaxy Powerpoint Notes
... The creation of galaxies is a very mysterious topic as it is uncertain of how the universe was created. The most common theory however, is the theory of the Big Bang, which states that the universe expanded from a very dense state and continues to expand today. Another common prediction of how galax ...
... The creation of galaxies is a very mysterious topic as it is uncertain of how the universe was created. The most common theory however, is the theory of the Big Bang, which states that the universe expanded from a very dense state and continues to expand today. Another common prediction of how galax ...
Diffuse Ultraviolet Emission in Galaxies
... P Cygni’s spectrum is quite unlike that of most stars. Typically, a stellar spectrum will feature numerous dark “absorption” lines, which are produced by atoms in its outer layers absorbing certain wavelengths of light emitted from below. A star’s spectrum may also exhibit bright “emission” lines—th ...
... P Cygni’s spectrum is quite unlike that of most stars. Typically, a stellar spectrum will feature numerous dark “absorption” lines, which are produced by atoms in its outer layers absorbing certain wavelengths of light emitted from below. A star’s spectrum may also exhibit bright “emission” lines—th ...
3.7 Isotope Effect - Institute for Astronomy | ETH
... galaxy 4.6 × 109 years ago at the birthplace of the Sun. A comparison with today’s isotope ratios in the interstellar medium provides important clues on the production rate of heavier elements in stars and allows us to determine empirically the chemical evolution of the interstellar medium (ISM) wit ...
... galaxy 4.6 × 109 years ago at the birthplace of the Sun. A comparison with today’s isotope ratios in the interstellar medium provides important clues on the production rate of heavier elements in stars and allows us to determine empirically the chemical evolution of the interstellar medium (ISM) wit ...
The Superhero's Universe: Observing the Cosmos with X-ray Vision and Beyond
... Galaxy: Centaurus A ★ Discovered in 1847 ★ 14 million light-years away ★ 5th brightest visible galaxy ...
... Galaxy: Centaurus A ★ Discovered in 1847 ★ 14 million light-years away ★ 5th brightest visible galaxy ...
Review 3 - Physics and Astronomy
... • High resolution requires large telescopes Surface of planets (Venus) ...
... • High resolution requires large telescopes Surface of planets (Venus) ...
Sample pages 2 PDF
... telescope have been observed every few hundred years by humans and were recorded as long ago as 1054 by Chinese astronomers. Many more supernovae are observed, in our own and other galaxies, with telescopes. (There are two types of supernovae. This is a description of type II supernovae. Type I supe ...
... telescope have been observed every few hundred years by humans and were recorded as long ago as 1054 by Chinese astronomers. Many more supernovae are observed, in our own and other galaxies, with telescopes. (There are two types of supernovae. This is a description of type II supernovae. Type I supe ...
Document
... b. the star’s continuous spectrum. c. the star’s absorption spectrum. d. the star’s color. _____ 8. The majority of stars in our galaxy are a. blue stars. b. white dwarfs. c.main-sequence stars. d. red giants. Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the o ...
... b. the star’s continuous spectrum. c. the star’s absorption spectrum. d. the star’s color. _____ 8. The majority of stars in our galaxy are a. blue stars. b. white dwarfs. c.main-sequence stars. d. red giants. Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the o ...
The night sky in October and November
... Alpheratz comes from the Arabic name for the “navel of the horse” Al Surrat al Faras, corrupted to Alpheratz. Here’s the story of Andromeda: Cepheus, The king of Ethiopia, was married to Cassiopeia, whom we’ll see later. They had a daughter, Andromeda. Cassiopeia boasted that her daughter was more b ...
... Alpheratz comes from the Arabic name for the “navel of the horse” Al Surrat al Faras, corrupted to Alpheratz. Here’s the story of Andromeda: Cepheus, The king of Ethiopia, was married to Cassiopeia, whom we’ll see later. They had a daughter, Andromeda. Cassiopeia boasted that her daughter was more b ...
Review Astronomy - Cowley`s Earth Systems
... was proportional to its distance. This relation was predicted by Lemaitre’s theory. Then, in 1964, Arno Penzias and Robert Wilson discovered the cosmic background radiation, which was also predicted by Lemaitre’s theory. Which of the following best describes the work of these scientists and the deve ...
... was proportional to its distance. This relation was predicted by Lemaitre’s theory. Then, in 1964, Arno Penzias and Robert Wilson discovered the cosmic background radiation, which was also predicted by Lemaitre’s theory. Which of the following best describes the work of these scientists and the deve ...
Assignment 10
... ____ 21. Today, astronomers find compelling evidence that the energy source of the quasars and active galaxies is a. antimatter and matter colliding at the center of a galaxy b. chain reactions of supernova explosions c. matter falling toward a supermassive black hole at the center of a galaxy d. t ...
... ____ 21. Today, astronomers find compelling evidence that the energy source of the quasars and active galaxies is a. antimatter and matter colliding at the center of a galaxy b. chain reactions of supernova explosions c. matter falling toward a supermassive black hole at the center of a galaxy d. t ...
Small galaxies are growing smaller
... particular, was very much less luminous (by another factor ~100) than previously known galaxies – with modern distance estimates it has MV ≈ –10 – and these two were the first examples of dwarf spheroidal galaxies. They were discovered only because they were close enough for individual bright stars ...
... particular, was very much less luminous (by another factor ~100) than previously known galaxies – with modern distance estimates it has MV ≈ –10 – and these two were the first examples of dwarf spheroidal galaxies. They were discovered only because they were close enough for individual bright stars ...
Chapter 8 lesson 4 Notes
... Constellations are named after animals, characters in stories, and familiar objects. ...
... Constellations are named after animals, characters in stories, and familiar objects. ...
Studying the Universe Studying the Universe
... are more forms of radiation than the kind we can see—visible light. In 1864, James Clerk Maxwell showed that visible light is a form of electromagnetic radiation. Electromagnetic radiation includes all forms of energy that travel through space as waves. Each color of visible light represents a diffe ...
... are more forms of radiation than the kind we can see—visible light. In 1864, James Clerk Maxwell showed that visible light is a form of electromagnetic radiation. Electromagnetic radiation includes all forms of energy that travel through space as waves. Each color of visible light represents a diffe ...
The Ultraluminous X-ray Source in Holmberg IX and its Environment
... Abstract. We present optical observations of an ultraluminous X-ray source (ULX) in Holmberg IX, a dwarf galaxy near M81. The ULX has an average X-ray luminosity of some 1040 erg/s. It is located in a huge (400pc × 300pc) ionized nebula being much larger than normal supernova remnants. From the obse ...
... Abstract. We present optical observations of an ultraluminous X-ray source (ULX) in Holmberg IX, a dwarf galaxy near M81. The ULX has an average X-ray luminosity of some 1040 erg/s. It is located in a huge (400pc × 300pc) ionized nebula being much larger than normal supernova remnants. From the obse ...
Astron 104 Laboratory #11 The Scale of the Milky Way
... galaxies. From question 9, we saw that the Andromeda Galaxy was about 2,500,000 ltyr from us. On the picture, this spot would be 250 cm (about two and a half meter sticks) away from the dot representing the Sun. The nearest group of galaxies to us (not counting our own Local Group) is the Virgo Clus ...
... galaxies. From question 9, we saw that the Andromeda Galaxy was about 2,500,000 ltyr from us. On the picture, this spot would be 250 cm (about two and a half meter sticks) away from the dot representing the Sun. The nearest group of galaxies to us (not counting our own Local Group) is the Virgo Clus ...
Lecture 3 - University of Washington
... CANDELS Multicycle Treasury Survey, in conjunction with the Sloan Digital Sky Survey, to explore the evolution of galactic structure for galaxies with stellar masses > 3e10 Msun from z = 2.2 to the present epoch, a time span of 10 Gyr. We explore the relationship between rest-frame optical color, st ...
... CANDELS Multicycle Treasury Survey, in conjunction with the Sloan Digital Sky Survey, to explore the evolution of galactic structure for galaxies with stellar masses > 3e10 Msun from z = 2.2 to the present epoch, a time span of 10 Gyr. We explore the relationship between rest-frame optical color, st ...
Stars and the Sun
... – Big enough to swallow first 3 planets – Uses He other elements for about 10 million years ...
... – Big enough to swallow first 3 planets – Uses He other elements for about 10 million years ...
Supermassive Black Holes and the Growth of Galaxies
... Despite this exciting progress, theoretical models have still faced some fundamental problems. Of these, perhaps the most troubling is the near-universal prediction that massive galaxies should be able to continually accrete new gas that cools and falls from the cosmic web into their large dark matt ...
... Despite this exciting progress, theoretical models have still faced some fundamental problems. Of these, perhaps the most troubling is the near-universal prediction that massive galaxies should be able to continually accrete new gas that cools and falls from the cosmic web into their large dark matt ...
Hubble Deep Field
The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area 2.5 arcminutes across, about one 24-millionth of the whole sky, which is equivalent in angular size to a 65 mm tennis ball at a distance of 100 metres. The image was assembled from 342 separate exposures taken with the Space Telescope's Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and December 28, 1995.The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known. By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe, with the associated scientific paper having received over 900 citations by the end of 2014.Three years after the HDF observations were taken, a region in the south celestial hemisphere was imaged in a similar way and named the Hubble Deep Field South. The similarities between the two regions strengthened the belief that the universe is uniform over large scales and that the Earth occupies a typical region in the Universe (the cosmological principle). A wider but shallower survey was also made as part of the Great Observatories Origins Deep Survey. In 2004 a deeper image, known as the Hubble Ultra-Deep Field (HUDF), was constructed from a few months of light exposure. The HUDF image was at the time the most sensitive astronomical image ever made at visible wavelengths, and it remained so until the Hubble Extreme Deep Field (XDF) was released in 2012.