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Chapter 31 - The Galaxy & Universe
... VII. Looking back in time A. We study stars/galaxies as they were. ...
... VII. Looking back in time A. We study stars/galaxies as they were. ...
the Full Chapter 6 -
... stellar families in the Universe. And galaxies. Astronomers have never seen so much detail. Majestic spirals, absorbing dust lanes, violent collisions. Extremely long exposures of blank regions of sky have revealed thousands of faint galaxies billions of light-years away by capturing photons that we ...
... stellar families in the Universe. And galaxies. Astronomers have never seen so much detail. Majestic spirals, absorbing dust lanes, violent collisions. Extremely long exposures of blank regions of sky have revealed thousands of faint galaxies billions of light-years away by capturing photons that we ...
Constellations - Sierra Star Gazers
... site, accessed from Highway 50, at 7:30 pm to assist observers with basic telescope setup procedures, Newtonian mirror collimation, and basic polar alignment questions. IHOP is an excellent medium-high altitude dark sky venue for quality group observing. For directions to the Icehouse Observing Park ...
... site, accessed from Highway 50, at 7:30 pm to assist observers with basic telescope setup procedures, Newtonian mirror collimation, and basic polar alignment questions. IHOP is an excellent medium-high altitude dark sky venue for quality group observing. For directions to the Icehouse Observing Park ...
File
... Visible nebulae that you placed yellow labels are located nearby the Solar System and invisible nebulae (but seen in radio wavelength) that you placed silver labels are located far from our Solar System. Visible light emitted from far nebulae are absorbed by foreground gas and dust in the space and ...
... Visible nebulae that you placed yellow labels are located nearby the Solar System and invisible nebulae (but seen in radio wavelength) that you placed silver labels are located far from our Solar System. Visible light emitted from far nebulae are absorbed by foreground gas and dust in the space and ...
1. The "Q" word and its meaning
... is energy the keyword for gas expulsion ? (AGN have enough energy but the coupling of this energy with gas remains to be proven) ...
... is energy the keyword for gas expulsion ? (AGN have enough energy but the coupling of this energy with gas remains to be proven) ...
Formation of Globular Clusters: In and Out of Dwarf Galaxies
... • Red clusters in the Galaxy are due to massive late gas-rich mergers • Blue clusters are due to early continuous mergers and later massive mergers • Break between populations is due to few late massive mergers • Massive mergers produce both red and blue clusters in almost equal amounts: in large el ...
... • Red clusters in the Galaxy are due to massive late gas-rich mergers • Blue clusters are due to early continuous mergers and later massive mergers • Break between populations is due to few late massive mergers • Massive mergers produce both red and blue clusters in almost equal amounts: in large el ...
Finnish Centre for Astronomy with ESO
... that are essential in understanding the physics behind the observations. Our research were reported in 96 refereed scientific articles, and some of them are highlighted in the Research section of this Annual Report. Our researcher training activities in 2014 focused on one hand in supervision of PhD ...
... that are essential in understanding the physics behind the observations. Our research were reported in 96 refereed scientific articles, and some of them are highlighted in the Research section of this Annual Report. Our researcher training activities in 2014 focused on one hand in supervision of PhD ...
homework assignment 2
... yourselves and figure out some way of communicating with each other outside of class so that all of the group knows who is doing what over the next week. Elect a secretary/recorder, who will list all the group members’ names on a sheet of paper. Look over the list of statements below and choose thre ...
... yourselves and figure out some way of communicating with each other outside of class so that all of the group knows who is doing what over the next week. Elect a secretary/recorder, who will list all the group members’ names on a sheet of paper. Look over the list of statements below and choose thre ...
Final review - Physics and Astronomy
... From Cepheids in Milky Way star clusters (with known distances), it was found that period (days to weeks) is related to average luminosity. ...
... From Cepheids in Milky Way star clusters (with known distances), it was found that period (days to weeks) is related to average luminosity. ...
cont. - UNLV Physics
... • How big is the universe?" – The observable universe is 14 billion lightyears in radius and contains over 100 billion galaxies with a total number of stars comparable to the number of grains of sand on all of Earth s beaches" • How do our lifetimes compare to the age of the universe?" – On a co ...
... • How big is the universe?" – The observable universe is 14 billion lightyears in radius and contains over 100 billion galaxies with a total number of stars comparable to the number of grains of sand on all of Earth s beaches" • How do our lifetimes compare to the age of the universe?" – On a co ...
An Eclectic View of our Milky Way Galaxy
... of “zero-velocity” or plunging disk stars [37]. The latter method was used by Carlberg & Innanen to derive a solar motion of 250 ± 15 km s−1 with respect to the gap [37]. They corrected that to θ0 = 235 ± 10 km s−1 by adopting V⊙ = 15 km s−1 , but as noted above the true solar motion relative to the ...
... of “zero-velocity” or plunging disk stars [37]. The latter method was used by Carlberg & Innanen to derive a solar motion of 250 ± 15 km s−1 with respect to the gap [37]. They corrected that to θ0 = 235 ± 10 km s−1 by adopting V⊙ = 15 km s−1 , but as noted above the true solar motion relative to the ...
taken from horizons 7th edition chapter 1 tutorial quiz
... The Milky Way Galaxy a. contains our Sun, which is located about two-thirds of the way from the center to the edge. b. contains about one-hundred billion stars. c. all of these choices. d. is a fairly large galaxy, but is not unique. answer: c ...
... The Milky Way Galaxy a. contains our Sun, which is located about two-thirds of the way from the center to the edge. b. contains about one-hundred billion stars. c. all of these choices. d. is a fairly large galaxy, but is not unique. answer: c ...
Multiple Choice, continued Stars, Galaxies, and the Universe
... Today, we know that Copernicus was right: the stars are very far from Earth. In fact, stars are so distant that a new unit of length—the light-year—was created to measure their distance. A light-year is a unit of length equal to the distance that light travels through space in 1 year. Because the sp ...
... Today, we know that Copernicus was right: the stars are very far from Earth. In fact, stars are so distant that a new unit of length—the light-year—was created to measure their distance. A light-year is a unit of length equal to the distance that light travels through space in 1 year. Because the sp ...
Document
... The rotation curve of any spinning galaxy is a plot of its orbital speed as a function of distance from its center. For example, the rotation curve of the Milky Way Galaxy has been determined through studies of the motions of stars and clouds of gas (see figure). It rises from zero in the center, to ...
... The rotation curve of any spinning galaxy is a plot of its orbital speed as a function of distance from its center. For example, the rotation curve of the Milky Way Galaxy has been determined through studies of the motions of stars and clouds of gas (see figure). It rises from zero in the center, to ...
How Close is our Nearest Neighbor
... From Shapley’s experiment we have learned that our Sun is located about halfway from the center of the Milky Way to its outer edge. Our Milky Way contains hundreds of billions of stars and is one of billions of galaxies in the universe. The universe is vast, and most of the universe is empty – no st ...
... From Shapley’s experiment we have learned that our Sun is located about halfway from the center of the Milky Way to its outer edge. Our Milky Way contains hundreds of billions of stars and is one of billions of galaxies in the universe. The universe is vast, and most of the universe is empty – no st ...
Stars and Galaxies
... half a million miles per hour around the center of the Galaxy takes our Solar System about 200 million years to revolve once around our galaxy ...
... half a million miles per hour around the center of the Galaxy takes our Solar System about 200 million years to revolve once around our galaxy ...
Lecture 15a - Sierra College Astronomy Home Page
... 0.5 million years (fast robot probes, fastest biological exploration) 5 million years (slow robot probes) 50 million years (slow biological exploration) 10 billion years Instead, it would be vastly more likely that if even one other civilization EVER occurred in our galaxy, it would have had billion ...
... 0.5 million years (fast robot probes, fastest biological exploration) 5 million years (slow robot probes) 50 million years (slow biological exploration) 10 billion years Instead, it would be vastly more likely that if even one other civilization EVER occurred in our galaxy, it would have had billion ...
Word version of Episode 704
... The Andromeda galaxy M31 can just, but only just, be seen with the naked eye. Its light, 2 million years old, is the oldest light you can see with the unaided eye. The Andromeda galaxy, M31, is the nearest neighbour large galaxy to our own Galaxy, the Milky Way. It is about 2.2 million light years a ...
... The Andromeda galaxy M31 can just, but only just, be seen with the naked eye. Its light, 2 million years old, is the oldest light you can see with the unaided eye. The Andromeda galaxy, M31, is the nearest neighbour large galaxy to our own Galaxy, the Milky Way. It is about 2.2 million light years a ...
Quasars
... • The name is retained today, even though astronomers now know most quasars are faint radio emitters. • Quasars also are called quasi-stellar objects (QSOs). • Due to their great distance from Earth, no quasars can be seen with an unaided eye. • Energy from quasars takes billions of years to reach t ...
... • The name is retained today, even though astronomers now know most quasars are faint radio emitters. • Quasars also are called quasi-stellar objects (QSOs). • Due to their great distance from Earth, no quasars can be seen with an unaided eye. • Energy from quasars takes billions of years to reach t ...
binary star
... • A black hole is a massive star that has collapsed to such a small volume that its gravity prevents the escape of everything, including light. • Scientists think that as matter is pulled into a black hole, it should become very hot and emit a flood of X-rays before being pulled in. ...
... • A black hole is a massive star that has collapsed to such a small volume that its gravity prevents the escape of everything, including light. • Scientists think that as matter is pulled into a black hole, it should become very hot and emit a flood of X-rays before being pulled in. ...
Blowin` in the wind: both `negative` and `positive` feedback in an
... 320 km/s) is consistent with the systemic redshift of the host galaxy (Brusa et al. 2010), and it is interpreted as due to the star formation in the host galaxy. We map the spatial extent of the Hα narrow component by fitting in each spaxels of the datacube the single Gaussian derived from the integr ...
... 320 km/s) is consistent with the systemic redshift of the host galaxy (Brusa et al. 2010), and it is interpreted as due to the star formation in the host galaxy. We map the spatial extent of the Hα narrow component by fitting in each spaxels of the datacube the single Gaussian derived from the integr ...
Chapter 8 - TeacherWeb
... A star life cycle: first stage: it is a ball of gas and dust. Gravity pulls the dust and gas together into a sphere. As the sphere becomes denser it becomes hotter. Hydrogen changes to helium by a process called nuclear fusion. When a star dies its materials return to space---sometimes to form new s ...
... A star life cycle: first stage: it is a ball of gas and dust. Gravity pulls the dust and gas together into a sphere. As the sphere becomes denser it becomes hotter. Hydrogen changes to helium by a process called nuclear fusion. When a star dies its materials return to space---sometimes to form new s ...
2. Velocity dispersions of galaxies
... X-ray measurements of hot intracluster gas correspond closely to Zwicky's observations of mass-to-light ratios for large clusters of nearly 10 to 1. Many of the experiments of the Chandra X-ray Observatory use this technique to independently determine the mass of clusters. ...
... X-ray measurements of hot intracluster gas correspond closely to Zwicky's observations of mass-to-light ratios for large clusters of nearly 10 to 1. Many of the experiments of the Chandra X-ray Observatory use this technique to independently determine the mass of clusters. ...
Galaxy Zoo
![](https://commons.wikimedia.org/wiki/Special:FilePath/Galaxyzoo.jpg?width=300)
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.