Galaxy clusters - University of Iowa Astrophysics
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
Great Astronomers of the 20th Century
... • Her PhD thesis on the physics of stellar atmospheres was deemed “brilliant” ...
... • Her PhD thesis on the physics of stellar atmospheres was deemed “brilliant” ...
Astronomy 114 Problem Set # 7 Due: 30 Apr 2007 SOLUTIONS 1
... better accuracy we can gain in the Hubble law. 7 Freedman & Kaufmann Chap. 26, Problem 29, pg. 605 The image shows very evident bright regions that may be sites of OB associations and HII regions (note the Hydrogen α color), which indicate the recent star formation. The inner part of the galaxy is r ...
... better accuracy we can gain in the Hubble law. 7 Freedman & Kaufmann Chap. 26, Problem 29, pg. 605 The image shows very evident bright regions that may be sites of OB associations and HII regions (note the Hydrogen α color), which indicate the recent star formation. The inner part of the galaxy is r ...
Galaxy clusters - University of Iowa Astrophysics
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
The galaxies that host powerful radio sources
... (14 arcsec FWHM). • Optically faint (R>25). • Faint at radio and IR wavelengths. These facts suggest they are distant and dusty. ...
... (14 arcsec FWHM). • Optically faint (R>25). • Faint at radio and IR wavelengths. These facts suggest they are distant and dusty. ...
Physics 127 Descriptive Astronomy Homework #20 Key
... 14-3. How did Edwin Hubble prove that the Andromeda “Nebula” is not a nebula within our Milky Way Galaxy? Hubble was able to detect Cepheid variable stars within that “Nebula.” Then by observing their light curves and using the known period- luminosity relation for Cepheids, he obtained and compared ...
... 14-3. How did Edwin Hubble prove that the Andromeda “Nebula” is not a nebula within our Milky Way Galaxy? Hubble was able to detect Cepheid variable stars within that “Nebula.” Then by observing their light curves and using the known period- luminosity relation for Cepheids, he obtained and compared ...
Extragalactic AO Science
... reduce throughput further making it difficult to observe faint extended sources. Normal galaxy disks only achieve a maximum SB of K~16 mag/sq arcsec and this fades as (1+z)4. This means all normal disks are fainter than 22.5 mag within 0.05x0.05”. ...
... reduce throughput further making it difficult to observe faint extended sources. Normal galaxy disks only achieve a maximum SB of K~16 mag/sq arcsec and this fades as (1+z)4. This means all normal disks are fainter than 22.5 mag within 0.05x0.05”. ...
Galaxies and the Universe
... The Hubble Telescope • A reflecting telescope that was placed into orbit in 1990 • Sends images and measurements back to Earth electronically • A deep image of an “empty” portion of the sky reveals that the universe is filled with galaxies • The light we see from the most distant galaxies has trave ...
... The Hubble Telescope • A reflecting telescope that was placed into orbit in 1990 • Sends images and measurements back to Earth electronically • A deep image of an “empty” portion of the sky reveals that the universe is filled with galaxies • The light we see from the most distant galaxies has trave ...
Where is the Solar System in the Universe?
... – The sun (which is the name of our star) – Planets – Asteroids – Comets – Space rocks ...
... – The sun (which is the name of our star) – Planets – Asteroids – Comets – Space rocks ...
Page 25 - Types of Galaxies
... • Edwin Hubble classified galaxies into four major types: A) spiral B) barred spiral C) elliptical D) irregular • Most galaxies are spirals, barred spirals, or ellipticals. • Earth can be found in the Milky Way Galaxy, which is a spiral galaxy ...
... • Edwin Hubble classified galaxies into four major types: A) spiral B) barred spiral C) elliptical D) irregular • Most galaxies are spirals, barred spirals, or ellipticals. • Earth can be found in the Milky Way Galaxy, which is a spiral galaxy ...
Galaxies and the Universe
... The Hubble Telescope • A reflecting telescope that was placed into orbit in 1990 • Sends images and measurements back to Earth electronically • A deep image of an “empty” portion of the sky reveals that the universe is filled with galaxies • The light we see from the most distant galaxies has trave ...
... The Hubble Telescope • A reflecting telescope that was placed into orbit in 1990 • Sends images and measurements back to Earth electronically • A deep image of an “empty” portion of the sky reveals that the universe is filled with galaxies • The light we see from the most distant galaxies has trave ...
doc - IAC
... Massive stars are much heavier than the Sun. They can be up to 10 or 100 times more massive. They stand out because of their high luminosity. These stars can become a million times brighter than the Sun. Their masses can be measured dynamically, in the same way as planetary masses are measured. The ...
... Massive stars are much heavier than the Sun. They can be up to 10 or 100 times more massive. They stand out because of their high luminosity. These stars can become a million times brighter than the Sun. Their masses can be measured dynamically, in the same way as planetary masses are measured. The ...
Galaxies - Wallkill Valley Regional High School
... several dozen galaxies that makes up our Local Cluster, and our Local Cluster group is only one of many in a collection called superclusters… ...
... several dozen galaxies that makes up our Local Cluster, and our Local Cluster group is only one of many in a collection called superclusters… ...
Slide 1
... • Milky Way (our galaxy) is a spiral galaxy • Our solar system lies on one arm (Orion Arm) ...
... • Milky Way (our galaxy) is a spiral galaxy • Our solar system lies on one arm (Orion Arm) ...
PARTS OF THE UNIVERSE
... v Parallax: apparent shift in the position of an object when view from two different locations. v Parallax Example v Can be used to measure the distance of stars from Earth that are relatively close. v Proxima Centauri: closest star to earth v (4.3 light years away – 40 trillion km) ...
... v Parallax: apparent shift in the position of an object when view from two different locations. v Parallax Example v Can be used to measure the distance of stars from Earth that are relatively close. v Proxima Centauri: closest star to earth v (4.3 light years away – 40 trillion km) ...
HighRedshiftGalaxies
... decrements), somebody suggests that some fraction of their UV-selected population must be suffering star formation which is erratic in its time history. In such a situation, different diagnostics will be sensitive to bursts of activity for different periods, corresponding to the time over which the ...
... decrements), somebody suggests that some fraction of their UV-selected population must be suffering star formation which is erratic in its time history. In such a situation, different diagnostics will be sensitive to bursts of activity for different periods, corresponding to the time over which the ...
3A8d
... An underlying theme throughout the course was the comparison of observed properties of galaxies with expectations from the current ΛCDM hierarchical model, which integrates a picture for the growth of galaxies with the buildup of the large scale structure of the Universe itself. (a) Describe, in rou ...
... An underlying theme throughout the course was the comparison of observed properties of galaxies with expectations from the current ΛCDM hierarchical model, which integrates a picture for the growth of galaxies with the buildup of the large scale structure of the Universe itself. (a) Describe, in rou ...
Astronomy 101 Section 4
... Our tour continues with a visit to the nearest galaxies - here the Large Magellanic Cloud. ...
... Our tour continues with a visit to the nearest galaxies - here the Large Magellanic Cloud. ...
Watching Galaxies Form Near the Beginning of Time
... • Features in the spectra of galaxies are essentially always observed at wavelengths longer than the corresponding features in laboratories on Earth (the “redshift”). • The cosmological redshift is not exactly a Doppler shift, but is linked to the expansion of space as light propagates as well as th ...
... • Features in the spectra of galaxies are essentially always observed at wavelengths longer than the corresponding features in laboratories on Earth (the “redshift”). • The cosmological redshift is not exactly a Doppler shift, but is linked to the expansion of space as light propagates as well as th ...
Sky News – March 2015 The Realm of the Galaxies
... Coma Bernices. With our night sky pointing away from the hustle and bustle of the plane of the Milky Way, we can see deep into the sky without objects being obscured or dimmed by looking through our galaxy. In spring skies we are treated to views of the closest cluster of galaxies in Virgo of which ...
... Coma Bernices. With our night sky pointing away from the hustle and bustle of the plane of the Milky Way, we can see deep into the sky without objects being obscured or dimmed by looking through our galaxy. In spring skies we are treated to views of the closest cluster of galaxies in Virgo of which ...
Astronomy Quiz #1 Answers
... 8. Some galaxies are thought to produce many more new stars than others. What characteristics do galaxies with a high rate of production of stars have in common? (2 – MC) -they have large amounts of dust and gas 9. Explain why looking at a star in the night sky is like looking back in time. (2 – COM ...
... 8. Some galaxies are thought to produce many more new stars than others. What characteristics do galaxies with a high rate of production of stars have in common? (2 – MC) -they have large amounts of dust and gas 9. Explain why looking at a star in the night sky is like looking back in time. (2 – COM ...
Galaxies and the Big Bang Theory
... A _______________ _________________ is a device used to detect long radio waves from objects in space. A ___________ is a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity The three different types of galaxies that exist in our universe are: ...
... A _______________ _________________ is a device used to detect long radio waves from objects in space. A ___________ is a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity The three different types of galaxies that exist in our universe are: ...
Pea galaxy
A Pea galaxy, also referred to as a Pea or Green Pea, might be a type of Luminous Blue Compact Galaxy which is undergoing very high rates of star formation. Pea galaxies are so-named because of their small size and greenish appearance in the images taken by the Sloan Digital Sky Survey (SDSS).Pea Galaxies were first discovered in 2007 by the volunteer users within the forum section of the online astronomy project Galaxy Zoo (GZ).