PPT
... have supermassive black holes at their centers • These black holes seem to be dormant active ...
... have supermassive black holes at their centers • These black holes seem to be dormant active ...
UV-Optical Colors as Probes of Early-Type Galaxy Evolution
... Cold Gas found in many early-type galaxies CMRs (Ferraras and Silk 2000) for early-types in cluster A851 (tobs= ~4.5 Ga) consistent with 10% of galaxy SF less than 500Ma UV-Upturn studies find blue colors in some early types can not be fully explained by old (EHB and later) stars ...
... Cold Gas found in many early-type galaxies CMRs (Ferraras and Silk 2000) for early-types in cluster A851 (tobs= ~4.5 Ga) consistent with 10% of galaxy SF less than 500Ma UV-Upturn studies find blue colors in some early types can not be fully explained by old (EHB and later) stars ...
M104: The Sombrero Galaxy
... rich system of star clusters, called globular clusters. Astronomers estimate that the Sombrero contains nearly 2,000 globular clusters —10 times as many as orbit our Milky Way. The ages of the clusters are similar to those in the Milky Way, ranging from 10 billion to 13 billion years old. The Sombre ...
... rich system of star clusters, called globular clusters. Astronomers estimate that the Sombrero contains nearly 2,000 globular clusters —10 times as many as orbit our Milky Way. The ages of the clusters are similar to those in the Milky Way, ranging from 10 billion to 13 billion years old. The Sombre ...
The Origin of the Universe - Christos N. Hadjichristidis
... A globular cluster is a dense collection of close to a million stars, all of which formed at roughly the same time so they can serve as cosmic clocks The fate of every star depends solely on its initial mass. So what should we look for (Corpses of massive or light stars)? The brightest of white dwar ...
... A globular cluster is a dense collection of close to a million stars, all of which formed at roughly the same time so they can serve as cosmic clocks The fate of every star depends solely on its initial mass. So what should we look for (Corpses of massive or light stars)? The brightest of white dwar ...
Astronomy 1001/1005 Final Exam (250 points)
... spiral arms as well as gas and dust. They also have a central spheroidal bulge and are surrounded by a spheroidal halo containing globular clusters. Elliptical Galaxies are simple spheroidal collections of stars. The stars are usually very old as ellipticals are devoid of gas and dust, preventing on ...
... spiral arms as well as gas and dust. They also have a central spheroidal bulge and are surrounded by a spheroidal halo containing globular clusters. Elliptical Galaxies are simple spheroidal collections of stars. The stars are usually very old as ellipticals are devoid of gas and dust, preventing on ...
Hoag`s Object
... In the initial announcement of his discovery, Art Hoag proposed the hypothesis that the visible ring was a product of gravitational lensing. This idea was later discarded because the nucleus and the ring have the same redshift, and because more advanced telescopes revealed the knotty structure of th ...
... In the initial announcement of his discovery, Art Hoag proposed the hypothesis that the visible ring was a product of gravitational lensing. This idea was later discarded because the nucleus and the ring have the same redshift, and because more advanced telescopes revealed the knotty structure of th ...
M104: The Sombrero Galaxy
... rich system of star clusters, called globular clusters. Astronomers estimate that the Sombrero contains nearly 2,000 globular clusters —10 times as many as orbit our Milky Way. The ages of the clusters are similar to those in the Milky Way, ranging from 10 billion to 13 billion years old. The Sombre ...
... rich system of star clusters, called globular clusters. Astronomers estimate that the Sombrero contains nearly 2,000 globular clusters —10 times as many as orbit our Milky Way. The ages of the clusters are similar to those in the Milky Way, ranging from 10 billion to 13 billion years old. The Sombre ...
OVERVIEW: Stars and space
... 13.10 What is the life history of stars? Using skills, knowledge and understanding of how science works: • to explain how stars are able to maintain their energy output for millions of years • to explain why the early Universe contained only hydrogen but now contains a large variety of different ele ...
... 13.10 What is the life history of stars? Using skills, knowledge and understanding of how science works: • to explain how stars are able to maintain their energy output for millions of years • to explain why the early Universe contained only hydrogen but now contains a large variety of different ele ...
Starbursts – from 30 Doradus to Lyman
... early galaxy evolution. Many of the distant, high-redshift galaxies we are able to detect are in a starbursting phase, often apparently provoked by a violent gravitational interaction with another galaxy. Nearby analogues to the largescale starbursts at high redshifts are rare, although more modest ...
... early galaxy evolution. Many of the distant, high-redshift galaxies we are able to detect are in a starbursting phase, often apparently provoked by a violent gravitational interaction with another galaxy. Nearby analogues to the largescale starbursts at high redshifts are rare, although more modest ...
in the milky way - Chandra X
... the galactic plane will eventually cause it to stop and then move back towards the galactic plane. Our whole Galaxy is also traveling through space. Within the local group of galaxies, the Milky Way’s velocity is several hundred kilometers per second. What would happen if the Andromeda Galaxy and th ...
... the galactic plane will eventually cause it to stop and then move back towards the galactic plane. Our whole Galaxy is also traveling through space. Within the local group of galaxies, the Milky Way’s velocity is several hundred kilometers per second. What would happen if the Andromeda Galaxy and th ...
Document
... 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
... 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. ...
Formation of Globular Clusters: In and Out of Dwarf Galaxies
... The gas in early halos is not dense enough to form the observed globular clusters In addition, the cosmic time is less than 0.4 Gyr Moore et al. (2006) ...
... The gas in early halos is not dense enough to form the observed globular clusters In addition, the cosmic time is less than 0.4 Gyr Moore et al. (2006) ...
Upsilon Andromedae
... Standard error: 0.004 Mean Vt magnitude: 4.159 Standard error: 0.003 Source of photometric data: The Bt,Vt data are median values, rather than de-censored mean values (mainly relevant for bright stars with Bt<=8.5 mag and Vt<=8.0 mag). Johnson B-V colour index: 0.541 Standard error: 0.004 Number of ...
... Standard error: 0.004 Mean Vt magnitude: 4.159 Standard error: 0.003 Source of photometric data: The Bt,Vt data are median values, rather than de-censored mean values (mainly relevant for bright stars with Bt<=8.5 mag and Vt<=8.0 mag). Johnson B-V colour index: 0.541 Standard error: 0.004 Number of ...
Define the following terms in the space provided
... You arrive in Cancun on a clear night. You look up at the stars and notice that they appear different that the stars you see in Syracuse, NY. Which of the statements below is true regarding the appearance of the stars in Cancun? Circle all that are true. A) Polaris will appear higher in the sky than ...
... You arrive in Cancun on a clear night. You look up at the stars and notice that they appear different that the stars you see in Syracuse, NY. Which of the statements below is true regarding the appearance of the stars in Cancun? Circle all that are true. A) Polaris will appear higher in the sky than ...
Name Period Test on Size and Scale from the Electron to the
... River Hills Mall to LCS are all about the same . How many miles(nearest half mile) The deepest hole in the earth is 7.5 miles dug in Russia. The deepest natural point on earth is in the oceans 6.8 miles . Where is that place and what is the geological form? The highest point on Earth is 29,500 feet( ...
... River Hills Mall to LCS are all about the same . How many miles(nearest half mile) The deepest hole in the earth is 7.5 miles dug in Russia. The deepest natural point on earth is in the oceans 6.8 miles . Where is that place and what is the geological form? The highest point on Earth is 29,500 feet( ...
Progenitor stars of supernovae
... •True nature of progenitor star system? •What serves as a companion star? •How to detect signatures of the binary system? ...
... •True nature of progenitor star system? •What serves as a companion star? •How to detect signatures of the binary system? ...
galaxies - GEOCITIES.ws
... – A neutron star is a star made entirely of neutrons, as the name suggests. After a star goes supernova, the remaining core collapses. Gravity shrinks and condenses it into a sphere about the size of Manhattan (fifteen mile diameter) in a few seconds. However, to do this it has to break the barrier ...
... – A neutron star is a star made entirely of neutrons, as the name suggests. After a star goes supernova, the remaining core collapses. Gravity shrinks and condenses it into a sphere about the size of Manhattan (fifteen mile diameter) in a few seconds. However, to do this it has to break the barrier ...
Star Types - University of Massachusetts Amherst
... Clusters therefore are natural laboratory in which mass, rather than age, of stars is only significant variable. ...
... Clusters therefore are natural laboratory in which mass, rather than age, of stars is only significant variable. ...
Magnitudes lesson plan
... Over two thousand years ago, the Greek astronomer Hipparchus (160-125 B.C.) divided the stars that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been c ...
... Over two thousand years ago, the Greek astronomer Hipparchus (160-125 B.C.) divided the stars that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been c ...
Yes - Wichita State University
... •Measure the oxygen gradient in the ISM of the Milky Way disk •Employ planetary nebulae as abundance probes •Perform detailed statistical treatment of data ...
... •Measure the oxygen gradient in the ISM of the Milky Way disk •Employ planetary nebulae as abundance probes •Perform detailed statistical treatment of data ...
Building` a Galaxy SED
... Practical problem: galaxies are biased tracers of underlying mass distribution. In order to use galaxies to measure underlying mass distribution, we must understand galaxies. ...
... Practical problem: galaxies are biased tracers of underlying mass distribution. In order to use galaxies to measure underlying mass distribution, we must understand galaxies. ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.