Astronomy 100—Quiz 4
... 2. Most of the mass of the Milky Way galaxy is A. contained in the massive O and B stars in the galaxy. B. contained in the H I regions of the galaxy. C. contained in the H II regions of the galaxy. D. contained in the dark matter halo of the galaxy. E. contained in the disk of the galaxy. 3. Which ...
... 2. Most of the mass of the Milky Way galaxy is A. contained in the massive O and B stars in the galaxy. B. contained in the H I regions of the galaxy. C. contained in the H II regions of the galaxy. D. contained in the dark matter halo of the galaxy. E. contained in the disk of the galaxy. 3. Which ...
Star Factories at the End of the World - Max-Planck
... stellar activity. These spectral lines not only reveal that new stars are being ...
... stellar activity. These spectral lines not only reveal that new stars are being ...
PowerPoint Slides
... Gas released by a dying star races across space at more than 600,000 miles an hour, forming the delicate shape of a celestial butterfly. This nebula is also known the Bug Nebula.—A big Bug more than 26 Trillion miles wide ...
... Gas released by a dying star races across space at more than 600,000 miles an hour, forming the delicate shape of a celestial butterfly. This nebula is also known the Bug Nebula.—A big Bug more than 26 Trillion miles wide ...
LET`S MAKE A PORTRAIT OF A GALAXY Abstract
... As the name suggests, “irregular” galaxies are those galaxies which have no specific form, and so the group contains a very diverse selection of objects. In fact, there are two types of irregular galaxies. Type I are usually single galaxies of peculiar appearance. They contain a large fraction of yo ...
... As the name suggests, “irregular” galaxies are those galaxies which have no specific form, and so the group contains a very diverse selection of objects. In fact, there are two types of irregular galaxies. Type I are usually single galaxies of peculiar appearance. They contain a large fraction of yo ...
Galaxies and Their Properties
... • Hubble proposed a scheme for classifying galaxies (the “tuning fork” diagram) in his 1936 book, The Realm of the Nebulae ...
... • Hubble proposed a scheme for classifying galaxies (the “tuning fork” diagram) in his 1936 book, The Realm of the Nebulae ...
Galaxy interactions - collisions Many stars are thrown out into space
... After a few billion years, when all has settled down, the result is an elliptical galaxy: Stars in random orbits, and little gas and dust left for new star formation. ...
... After a few billion years, when all has settled down, the result is an elliptical galaxy: Stars in random orbits, and little gas and dust left for new star formation. ...
Diapositiva 1 - Universidad de Guanajuato
... they were defined from the appearance of galaxies in photographic plates (optical) they refer primarily to intrinsic luminous galaxies, but there exists a large population of dwarf galaxies (van den Bergh, 1960) (as luminosity decreases, first the rings become invisible, then the spiral arms, an ...
... they were defined from the appearance of galaxies in photographic plates (optical) they refer primarily to intrinsic luminous galaxies, but there exists a large population of dwarf galaxies (van den Bergh, 1960) (as luminosity decreases, first the rings become invisible, then the spiral arms, an ...
2Cchilingarian.pdf
... centre of the galaxy is shown in Fig. 3. The mean stellar age derived from these measurements is 6.5 ± 0.8 Gyr, the metallicity is solar ([F e/H] = 0.0 ± 0.04). The comparison of IC 3653 with the prototypical dE NGC 205 and compact elliptical galaxy M 32 is shown in Tab. 1. IC 3653 is a relatively b ...
... centre of the galaxy is shown in Fig. 3. The mean stellar age derived from these measurements is 6.5 ± 0.8 Gyr, the metallicity is solar ([F e/H] = 0.0 ± 0.04). The comparison of IC 3653 with the prototypical dE NGC 205 and compact elliptical galaxy M 32 is shown in Tab. 1. IC 3653 is a relatively b ...
Astronomy
... 3. Most scientists believe that Andromeda is about 2 million light years away from the Milky Way. ...
... 3. Most scientists believe that Andromeda is about 2 million light years away from the Milky Way. ...
galaxy
... Twinkling Stars • Stars are huge balls of hot, glowing gases that produce their own heat and light. • The sun is the closest star to Earth. • The sun looks larger than other stars only because it is so close to Earth. ...
... Twinkling Stars • Stars are huge balls of hot, glowing gases that produce their own heat and light. • The sun is the closest star to Earth. • The sun looks larger than other stars only because it is so close to Earth. ...
Magellanic Irregular Galaxies and Chemical Evolution of
... chemical evolution. As previously said, the chemical evolution of a galaxy is ruled by 3 main parameters, the IMF, the SFR, and the stellar heavy element production.lt can be shown (e.g. Tinsley, 1980, Fund. Cosm. Phys., 5, 287) that, at a given stage of evolution determined for example by the amoun ...
... chemical evolution. As previously said, the chemical evolution of a galaxy is ruled by 3 main parameters, the IMF, the SFR, and the stellar heavy element production.lt can be shown (e.g. Tinsley, 1980, Fund. Cosm. Phys., 5, 287) that, at a given stage of evolution determined for example by the amoun ...
AST1001.ch15
... The highly redshifted spectra of quasars indicate large distances. From brightness and distance, we find that luminosities of some quasars are >1012 LSun! Variability shows that all this energy comes from a region smaller than the solar system. ...
... The highly redshifted spectra of quasars indicate large distances. From brightness and distance, we find that luminosities of some quasars are >1012 LSun! Variability shows that all this energy comes from a region smaller than the solar system. ...
AST1001.ch15
... The highly redshifted spectra of quasars indicate large distances. From brightness and distance, we find that luminosities of some quasars are >1012 LSun! Variability shows that all this energy comes from a region smaller than the solar system. ...
... The highly redshifted spectra of quasars indicate large distances. From brightness and distance, we find that luminosities of some quasars are >1012 LSun! Variability shows that all this energy comes from a region smaller than the solar system. ...
Article in text format ()
... The astronomers are working, for example, on a new method for measuring the distance between quasars and Earth. They could thus reassess the theory regarding the expansion of the universe, which was awarded the Nobel Prize in Physics in 2011, and thus gain fundamental knowledge about the universe. U ...
... The astronomers are working, for example, on a new method for measuring the distance between quasars and Earth. They could thus reassess the theory regarding the expansion of the universe, which was awarded the Nobel Prize in Physics in 2011, and thus gain fundamental knowledge about the universe. U ...
- Lorentz Center
... Statistical samples of galaxy clusters from the RCS survey produce bimodal galaxy distributions: Red sequence galaxies… Have colors similar to R/S field galaxies Appear to evolve passively Are an increasing fraction of the cluster population Have increasing numbers of faint galaxies Blue galaxies… H ...
... Statistical samples of galaxy clusters from the RCS survey produce bimodal galaxy distributions: Red sequence galaxies… Have colors similar to R/S field galaxies Appear to evolve passively Are an increasing fraction of the cluster population Have increasing numbers of faint galaxies Blue galaxies… H ...
Rotation curves for galaxies: student activity
... orbits of objects in its disk. Even beyond the point in the disk at which starlight fades into the blackness of intergalactic space, we can still see radio waves from atomic hydrogen gas. We can therefore use Doppler shifts of the 21-cm emission line of atomic hydrogen to determine how quickly this ...
... orbits of objects in its disk. Even beyond the point in the disk at which starlight fades into the blackness of intergalactic space, we can still see radio waves from atomic hydrogen gas. We can therefore use Doppler shifts of the 21-cm emission line of atomic hydrogen to determine how quickly this ...
Velocity Field in the Local Volume
... the masses by deviation of velocities from uniform Hubble flow on scale about 1 Mpc. This method is independent from mass estimations based on virial theorem. A sample of 229 galaxies with photometric distances less then 7 Mpc have been considered. In our model we tried to find simultaneously the po ...
... the masses by deviation of velocities from uniform Hubble flow on scale about 1 Mpc. This method is independent from mass estimations based on virial theorem. A sample of 229 galaxies with photometric distances less then 7 Mpc have been considered. In our model we tried to find simultaneously the po ...
Galaxy - Cloudfront.net
... Topic: Galaxies Essential Question: What is a galaxy and how are they classified? Irregular Galaxy •Do not fit into the elliptical or spiral category •Have no definite shape •Frequently the result of when galaxies collide ...
... Topic: Galaxies Essential Question: What is a galaxy and how are they classified? Irregular Galaxy •Do not fit into the elliptical or spiral category •Have no definite shape •Frequently the result of when galaxies collide ...
Disk Galaxies in the Magneticum Pathfinder Simulations
... axis of inertia of the stars within 0.1Rvir and subsequently classify it according to the circularity parameter ǫ = jz /jcirc , where jz is the specific angular momentum of each particle with respect to the z-axis and jcirc is the specific angular momentum expected for a circular orbit. We classify ...
... axis of inertia of the stars within 0.1Rvir and subsequently classify it according to the circularity parameter ǫ = jz /jcirc , where jz is the specific angular momentum of each particle with respect to the z-axis and jcirc is the specific angular momentum expected for a circular orbit. We classify ...
DOC - Cool Cosmos
... continually running out of fuel and dying. But in galaxies with enough raw material to make new stars, a young population of stars will replace the dying ones. However, if enough time passes and a galaxy converts all of its available gas into stars and then the stars die out, at that point the galax ...
... continually running out of fuel and dying. But in galaxies with enough raw material to make new stars, a young population of stars will replace the dying ones. However, if enough time passes and a galaxy converts all of its available gas into stars and then the stars die out, at that point the galax ...
File - Mrs. Mantecon Science Class
... ______ 1. What is a giant ball of hot gases that undergo nuclear fusion? a. a planet c. a star cluster b. a star d. a solar system ______ 2. The Milky Way galaxy is an example of a(n) a. spiral galaxy. c. elliptical galaxy. b. quasar. d. irregular galaxy. ______ 3. The strength of the force of gravi ...
... ______ 1. What is a giant ball of hot gases that undergo nuclear fusion? a. a planet c. a star cluster b. a star d. a solar system ______ 2. The Milky Way galaxy is an example of a(n) a. spiral galaxy. c. elliptical galaxy. b. quasar. d. irregular galaxy. ______ 3. The strength of the force of gravi ...
No Slide Title
... Determining the density of the universe, WM. •Assumption: Large scale structure is a consequence of gravitational collapse. •To test this assumption, observe the redshift space distortions of the galaxy distribution. •The matter density is a key cosmological parameter. ...
... Determining the density of the universe, WM. •Assumption: Large scale structure is a consequence of gravitational collapse. •To test this assumption, observe the redshift space distortions of the galaxy distribution. •The matter density is a key cosmological parameter. ...
Seyfert galaxy
Seyfert galaxies are one of the two largest groups of active galaxies, along with quasars. They have quasar-like nuclei (very luminous, distant and bright sources of electromagnetic radiation) with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, their host galaxies are clearly detectable.Seyfert galaxies account for about 10% of all galaxies and are some of the most intensely studied objects in astronomy, as they are thought to be powered by the same phenomena that occur in quasars, although they are closer and less luminous than quasars. These galaxies have supermassive black holes at their centers which are surrounded by accretion discs of in-falling material. The accretion discs are believed to be the source of the observed ultraviolet radiation. Ultraviolet emission and absorption lines provide the best diagnostics for the composition of the surrounding material.Seen in visible light, most Seyfert galaxies look like normal spiral galaxies, but when studied under other wavelengths, it becomes clear that the luminosity of their cores is of comparable intensity to the luminosity of whole galaxies the size of the Milky Way.Seyfert galaxies are named after Carl Seyfert, who first described this class in 1943.