Clusters of galaxies
... Spectroscopic followup of samples selected on colours and morphology. ...
... Spectroscopic followup of samples selected on colours and morphology. ...
Chapter 19. Mapping the Universe from Herschel to Sloan
... (Andromeda Galaxy) and M33, but the star were too faint to obtain spectra which could be classified. Therefore, we did not know if these stars were ordinary main sequence objects in a rather nearby cluster of stars, within the boundaries of the Milky Way Galaxy or whether they were supergiants in a ...
... (Andromeda Galaxy) and M33, but the star were too faint to obtain spectra which could be classified. Therefore, we did not know if these stars were ordinary main sequence objects in a rather nearby cluster of stars, within the boundaries of the Milky Way Galaxy or whether they were supergiants in a ...
presentation (PPT format)
... Hubble proved that the spiral nebulae are far beyond the Milky Way (results presented in AAS on December 30, 1924) • Edwin Hubble used Cepheid variables to show that the “nebula” were actually immense star systems far beyond our Galaxy Cepheids were 104LS so For them to be so dim-they had To be dis ...
... Hubble proved that the spiral nebulae are far beyond the Milky Way (results presented in AAS on December 30, 1924) • Edwin Hubble used Cepheid variables to show that the “nebula” were actually immense star systems far beyond our Galaxy Cepheids were 104LS so For them to be so dim-they had To be dis ...
telescope as time machine - Galaxy Evolution Explorer
... So how is looking at far away galaxies like looking back in time? At 300,000 kilometers per second (186,000 miles per second), nothing travels faster than light. Even at this speed, though, it still takes time for light to get from one place to another. If you are looking at your girlfriend just acr ...
... So how is looking at far away galaxies like looking back in time? At 300,000 kilometers per second (186,000 miles per second), nothing travels faster than light. Even at this speed, though, it still takes time for light to get from one place to another. If you are looking at your girlfriend just acr ...
Twitter Feed ITSO Symposium 2017
... process? Spectroscopy of sources during reionisation can provide insights into this period, by setting constraints on the evolution of the neutral gas fraction with redshift, and on the topology of hydrogen reionisation. As they are extremely faint and their spectra are highly redshifted to near-inf ...
... process? Spectroscopy of sources during reionisation can provide insights into this period, by setting constraints on the evolution of the neutral gas fraction with redshift, and on the topology of hydrogen reionisation. As they are extremely faint and their spectra are highly redshifted to near-inf ...
Cosmology with GMRT
... – Apply to a single object (optical results are averages over large redshift range) – Not subject to the same systematics – Currently probe a complementary redshift range ...
... – Apply to a single object (optical results are averages over large redshift range) – Not subject to the same systematics – Currently probe a complementary redshift range ...
Galaxies – Island universes
... • Later, as the galaxy ages, the stuff that CAN fall in, pretty much HAS fallen in, and fueling rate drops. The core fades and instead of looking like a quasar it looks like a Seyfert or similar type active galaxy. Maybe 1/1000 of a solar mass per year typical. You can still see radio jets and lobes ...
... • Later, as the galaxy ages, the stuff that CAN fall in, pretty much HAS fallen in, and fueling rate drops. The core fades and instead of looking like a quasar it looks like a Seyfert or similar type active galaxy. Maybe 1/1000 of a solar mass per year typical. You can still see radio jets and lobes ...
E:\2012-2013\SSU\PHS 207spring 2013\3rd test 4
... to assigned essay questions on Milky Way other galaxies, the Universe & Cosmology.docx 4 of 5 pages 5. What evidence do we have that particuliar galaxies are powered by black holes at their ...
... to assigned essay questions on Milky Way other galaxies, the Universe & Cosmology.docx 4 of 5 pages 5. What evidence do we have that particuliar galaxies are powered by black holes at their ...
Long Ago and Far Away
... Light travels very fast, but not infinitely fast. For example, it takes light from the Sun about 8 minutes to reach Earth. So a telescope is like a time machine – objects appear as they were when the light we see left them, not as they are right now. When we look at the distant universe, we see gala ...
... Light travels very fast, but not infinitely fast. For example, it takes light from the Sun about 8 minutes to reach Earth. So a telescope is like a time machine – objects appear as they were when the light we see left them, not as they are right now. When we look at the distant universe, we see gala ...
MS 1512–CB58 - Columbia University Department of Astronomy
... scenario proposed by Shapley et al. (2001), whereby galaxies whose UV spectra are dominated by strong, blueshifted, absorption lines, as is the case here, are the youngest in the range of ages of LBGs. Our findings also lend support to models of structure formation which predict that, even at z 3, ...
... scenario proposed by Shapley et al. (2001), whereby galaxies whose UV spectra are dominated by strong, blueshifted, absorption lines, as is the case here, are the youngest in the range of ages of LBGs. Our findings also lend support to models of structure formation which predict that, even at z 3, ...
Chapter 31 Galaxies & the Universe
... may have from a few to hundreds of member galaxies and may range in sizes up to 30 million ly. In a cluster, most of the inner ...
... may have from a few to hundreds of member galaxies and may range in sizes up to 30 million ly. In a cluster, most of the inner ...
Multiple Choice, continued
... • The galaxy in which we live, the Milky Way, is a spiral galaxy in which the sun is one of hundreds of billions of stars. • Two irregular galaxies, the Large Magellanic Cloud and Small Magellanic Cloud, are our closest neighbors. • These three galaxies are called the Local Group. ...
... • The galaxy in which we live, the Milky Way, is a spiral galaxy in which the sun is one of hundreds of billions of stars. • Two irregular galaxies, the Large Magellanic Cloud and Small Magellanic Cloud, are our closest neighbors. • These three galaxies are called the Local Group. ...
Messier Galaxies of #202541
... Surface brightness plays a large role in galaxy observing. Published magnitude values are an important tool used to indicate how an object will look. However, when it is finally located, the object’s brightness may appear much differently than expected. One reason is that the integrated magnitude va ...
... Surface brightness plays a large role in galaxy observing. Published magnitude values are an important tool used to indicate how an object will look. However, when it is finally located, the object’s brightness may appear much differently than expected. One reason is that the integrated magnitude va ...
Forming disk galaxies in magneto-hydro
... In addition, we were for the first time able to predict the expected structure of the magnetic field in a spiral galaxy directly from the initial conditions left behind after the hot Big Bang. It turns out that already an extremely tiny magnetic field left behind by the Big Bang is sufficient to exp ...
... In addition, we were for the first time able to predict the expected structure of the magnetic field in a spiral galaxy directly from the initial conditions left behind after the hot Big Bang. It turns out that already an extremely tiny magnetic field left behind by the Big Bang is sufficient to exp ...
SUMSS - 京都大学
... No recent star formation available gas supply for forming new stars has already been used up, and light is dominated by old, low mass stars (K giants). Last major episode of star formation may have been as long as 10 billion years ago. ...
... No recent star formation available gas supply for forming new stars has already been used up, and light is dominated by old, low mass stars (K giants). Last major episode of star formation may have been as long as 10 billion years ago. ...
Early Star-Forming Galaxies
... Rodighiero used Herschel ’s far-infrared camera to look for galaxies hidden from visible-light observations because of their intervening dust. This allowed the astronomers to assemble a more complete picture of star birth than ever before. The team targeted two well-known regions of the sky that ha ...
... Rodighiero used Herschel ’s far-infrared camera to look for galaxies hidden from visible-light observations because of their intervening dust. This allowed the astronomers to assemble a more complete picture of star birth than ever before. The team targeted two well-known regions of the sky that ha ...
Introduction
... Fig. 1.1 compares images of two well-known elliptical galaxies. These galaxies have similar apparent luminosities and angular sizes; one is a little more elongated than the other, but otherwise there seems not much difference between them. Fig. 1.2, a comparison taking relative distance into account ...
... Fig. 1.1 compares images of two well-known elliptical galaxies. These galaxies have similar apparent luminosities and angular sizes; one is a little more elongated than the other, but otherwise there seems not much difference between them. Fig. 1.2, a comparison taking relative distance into account ...
As far as - Sangeeta Malhotra
... tells us their stars are younger than those we see in galaxies at intermediate distances. The distant galaxies are ragged and irregular. This is partly because we’re seeing them in ultraviolet light, and partly because the galaxies are still forming. Untangling the two effects will be valuable. Beca ...
... tells us their stars are younger than those we see in galaxies at intermediate distances. The distant galaxies are ragged and irregular. This is partly because we’re seeing them in ultraviolet light, and partly because the galaxies are still forming. Untangling the two effects will be valuable. Beca ...
Chapter 27 Quasars, Active Galaxies, and Gamma
... • Early radio telescopes found radio emission from stars, nebulae, and some galaxies. • There were also point-like, or star-like, radio sources which varied rapidly these are the `quasi-stellar’ radio sources or quasars. • In visible light quasars appear as points, like stars. ...
... • Early radio telescopes found radio emission from stars, nebulae, and some galaxies. • There were also point-like, or star-like, radio sources which varied rapidly these are the `quasi-stellar’ radio sources or quasars. • In visible light quasars appear as points, like stars. ...
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. ...
Hubble Space Telescope Image
... The “Discovery” of Galaxies At the beginning of the 20th century, what we now call spiral galaxies were referred to as “spiral nebulae” and most astronomers believed them to be clouds of gas and stars associated with our own Milky Way. The breakthrough came in 1924 when Edwin Hubble was able to mea ...
... The “Discovery” of Galaxies At the beginning of the 20th century, what we now call spiral galaxies were referred to as “spiral nebulae” and most astronomers believed them to be clouds of gas and stars associated with our own Milky Way. The breakthrough came in 1924 when Edwin Hubble was able to mea ...
Figure 1
... The 154-orbits program is obtaining NUV,U,B,V,I images of 50 star-forming galaxies in the distance range 4-12 Mpc, covering the full range of morphology, star formation rate (SFR), mass, metallicity, internal structure, and interaction state found in the local Universe. The imaging survey will yield ...
... The 154-orbits program is obtaining NUV,U,B,V,I images of 50 star-forming galaxies in the distance range 4-12 Mpc, covering the full range of morphology, star formation rate (SFR), mass, metallicity, internal structure, and interaction state found in the local Universe. The imaging survey will yield ...
Milky Way Galaxy
... 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. ...
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).