“Missing” Local Group Satellites
... What’s WALLABY Got to Do With It? • WALLABY: Southern all-sky HI survey, ~4 km/s velocity resolution, 5σ HI detection limit at 1 Mpc ~ 5×104 M • Skymapper: Southern all-sky optical survey in 6 bandpasses • The combination of WALLABY and Skymapper will be uniquely well-suited for finding new ...
... What’s WALLABY Got to Do With It? • WALLABY: Southern all-sky HI survey, ~4 km/s velocity resolution, 5σ HI detection limit at 1 Mpc ~ 5×104 M • Skymapper: Southern all-sky optical survey in 6 bandpasses • The combination of WALLABY and Skymapper will be uniquely well-suited for finding new ...
Lesson Plan - ScienceA2Z.com
... Scientists hypothesize that a supermassive black hole lies in the Galactic Center of the Milky Way, as well as most (if not all) other galaxies. Because of cool interstellar dust along the line of sight, the Galactic Center cannot be studied at visible, ultraviolet or soft X-ray wavelengths. The ava ...
... Scientists hypothesize that a supermassive black hole lies in the Galactic Center of the Milky Way, as well as most (if not all) other galaxies. Because of cool interstellar dust along the line of sight, the Galactic Center cannot be studied at visible, ultraviolet or soft X-ray wavelengths. The ava ...
Study Guide Astronomy
... Chapter 4 Section 4 Star Systems and Galaxies (pages 141-147) 20. What is the major difference between elliptical galaxies and spiral galaxies? ...
... Chapter 4 Section 4 Star Systems and Galaxies (pages 141-147) 20. What is the major difference between elliptical galaxies and spiral galaxies? ...
Today`s Powerpoint
... - Physical states of stars, gas clouds, e.g. temperature, density, pressure. - Chemical make-up of stars, galaxies, gas clouds - Ages of stars and galaxies - Masses of stars, clouds, galaxies, extrasolar planets, rotation of galaxies, expansion of universe, acceleration of universe. All rely on taki ...
... - Physical states of stars, gas clouds, e.g. temperature, density, pressure. - Chemical make-up of stars, galaxies, gas clouds - Ages of stars and galaxies - Masses of stars, clouds, galaxies, extrasolar planets, rotation of galaxies, expansion of universe, acceleration of universe. All rely on taki ...
ph607-14-a3uni - University of Kent
... 1. Fanaroff-Riley Type II radio galaxies possess hot spots at their outer edges (edgebrightened). Type I do not possess distinct hot spots or they are located within the lobe. The FR Is are generally of lower luminosity and the jet speed is lower. [1 marks]. Wide radio jets leading to plumes are oft ...
... 1. Fanaroff-Riley Type II radio galaxies possess hot spots at their outer edges (edgebrightened). Type I do not possess distinct hot spots or they are located within the lobe. The FR Is are generally of lower luminosity and the jet speed is lower. [1 marks]. Wide radio jets leading to plumes are oft ...
Dark matter in the Galactic Halo Rotation curve (i.e. the orbital
... Rotation curve (i.e. the orbital velocity V of stars and gas as a function of distance to the Galactic Center r) of the disk of the Milky Way is measured: • for the inner Galaxy by looking at the Doppler shift of 21 cm emission from hydrogen • for the outer Galaxy by looking at the velocity of star ...
... Rotation curve (i.e. the orbital velocity V of stars and gas as a function of distance to the Galactic Center r) of the disk of the Milky Way is measured: • for the inner Galaxy by looking at the Doppler shift of 21 cm emission from hydrogen • for the outer Galaxy by looking at the velocity of star ...
Astronomy 114 Problem Set # 7 Due: 30 Apr 2007 SOLUTIONS 1
... gravitational pull at some radius R is induced by the mass within R, we denote it M(R). For the centrifugal force, we have ...
... gravitational pull at some radius R is induced by the mass within R, we denote it M(R). For the centrifugal force, we have ...
Barred Spiral Galaxy
... The remains of a supernova can become either a neutron star or a black hole ...
... The remains of a supernova can become either a neutron star or a black hole ...
Lecture 29 Our Galaxy: "Milky Way"
... Galactic Rotation Galactic material must be in some kind of orbit around the center, or gravity would pull everything into the center! • Rotation of Galaxy is real tough to measure (can't actually see rotation in our lifetime), but get a rough idea as follows, mainly from doppler radial velocities: ...
... Galactic Rotation Galactic material must be in some kind of orbit around the center, or gravity would pull everything into the center! • Rotation of Galaxy is real tough to measure (can't actually see rotation in our lifetime), but get a rough idea as follows, mainly from doppler radial velocities: ...
H EMISSION FROM HIGH-VELOCITY CLOUDS AND
... infalling members of the Local Group at large distances from the Galaxy. Models of the Galactic ionizing radiation field indicate that ionizing photons are capable of reaching distances on the order of 100 kpc; HVCs can act as an H i screen, and the H emission measure (EM) reflects the ionizing photo ...
... infalling members of the Local Group at large distances from the Galaxy. Models of the Galactic ionizing radiation field indicate that ionizing photons are capable of reaching distances on the order of 100 kpc; HVCs can act as an H i screen, and the H emission measure (EM) reflects the ionizing photo ...
PHYS 175 Fall 2014 Final Recitation Ch. 16 The Sun
... time are both aspects of a single spacetime, and the perception of that spacetime is dependent upon the observer’s frame of reference. While special relativity only takes into account relative motion (not gravity), it correctly predicts many observed distortions of mass, length and time. Ch. 22 The ...
... time are both aspects of a single spacetime, and the perception of that spacetime is dependent upon the observer’s frame of reference. While special relativity only takes into account relative motion (not gravity), it correctly predicts many observed distortions of mass, length and time. Ch. 22 The ...
AY5 Homework for Quiz 3: Spring 2015
... The flat rotation curve for orbits of stars at the Sun and beyond (in radius from the center of the Galaxy) requires much more mass in the galaxy than can be accounted for in identified stars ...
... The flat rotation curve for orbits of stars at the Sun and beyond (in radius from the center of the Galaxy) requires much more mass in the galaxy than can be accounted for in identified stars ...
Galaxies - Center for Astrostatistics
... There is an intricate relationship between the interstellar medium and stars in the Galactic disk. Star are born in cold molecular clouds., orbit the Galactic Center for billions of years, become red giants, and return heavy elements like CNO into the interstellar medium via planetary nebulae and su ...
... There is an intricate relationship between the interstellar medium and stars in the Galactic disk. Star are born in cold molecular clouds., orbit the Galactic Center for billions of years, become red giants, and return heavy elements like CNO into the interstellar medium via planetary nebulae and su ...
Maybe We Are Alone in the Universe, After All
... orbits, he said, are wildly eccentric, which would cause destructive chaos among smaller planets rather than shielding them. ''All the Jupiters seen today are bad Jupiters,'' Dr. Ward said. ''Ours is the only good one we know of. And it's got to be good, or you're thrown out into dark space or into ...
... orbits, he said, are wildly eccentric, which would cause destructive chaos among smaller planets rather than shielding them. ''All the Jupiters seen today are bad Jupiters,'' Dr. Ward said. ''Ours is the only good one we know of. And it's got to be good, or you're thrown out into dark space or into ...
Lecture #17 Rotation curves and spiral arms
... One idea is that the arms we see are material spiral arms, made of concentrations of stars and gas, which never leave the arms. It has the winding problem: if the rotation curve is flat, the angular speed is ~1/R, and the pitch angle decreases approx. as i~1/t to i~0 too fast, in just several gala ...
... One idea is that the arms we see are material spiral arms, made of concentrations of stars and gas, which never leave the arms. It has the winding problem: if the rotation curve is flat, the angular speed is ~1/R, and the pitch angle decreases approx. as i~1/t to i~0 too fast, in just several gala ...
Class 4 Galaxies Galaxy Classification Formation of Galaxies
... The rotation curve for the Milky Way Galaxy plots rotation speed against distance from the Galactic center. We can use this curve to compute the mass of the Galaxy. The dashed curve is the expectation if the Galaxy “ended” at a radius of 15 kpc, the limit of most of the known spiral structure and th ...
... The rotation curve for the Milky Way Galaxy plots rotation speed against distance from the Galactic center. We can use this curve to compute the mass of the Galaxy. The dashed curve is the expectation if the Galaxy “ended” at a radius of 15 kpc, the limit of most of the known spiral structure and th ...
Milky Way is bigger - Intranet Sint
... it came to the major galaxies in Earth's cosmic neighborhood, our Milky Way was a weak sister to the larger Andromeda. Not anymore. The Milky Way is considerably larger, bulkier and spinning faster than astronomers once thought, Andromeda's equal. Scientists mapped the Milky Way in a more detailed, ...
... it came to the major galaxies in Earth's cosmic neighborhood, our Milky Way was a weak sister to the larger Andromeda. Not anymore. The Milky Way is considerably larger, bulkier and spinning faster than astronomers once thought, Andromeda's equal. Scientists mapped the Milky Way in a more detailed, ...
Galaxies and the Universe
... • The sum of all space, matter, and energy that exists, has existed, or will exist • There is only one • You are part of it too! • We see it as it was in the past • Contains many other galaxies • Most of it is empty space ...
... • The sum of all space, matter, and energy that exists, has existed, or will exist • There is only one • You are part of it too! • We see it as it was in the past • Contains many other galaxies • Most of it is empty space ...
PH607 – Galaxies 1
... The Sun’s orbital speed is 217 km/s, i.e. 1 light-year in ca. 1400 years, and 1 AU in 8 days. It would take the solar system about 225-250 million years to complete one orbit ("galactic year"), and so is thought to have completed about 20-25 orbits during its lifetime. (Age 13.4-13.6 billion years?) ...
... The Sun’s orbital speed is 217 km/s, i.e. 1 light-year in ca. 1400 years, and 1 AU in 8 days. It would take the solar system about 225-250 million years to complete one orbit ("galactic year"), and so is thought to have completed about 20-25 orbits during its lifetime. (Age 13.4-13.6 billion years?) ...
31_Finding Earths
... does not have very many chemical elements aside from H and He. • Therefore few rocks to start planet formation so planets may be rare. • Few chemical elements needed for life. ...
... does not have very many chemical elements aside from H and He. • Therefore few rocks to start planet formation so planets may be rare. • Few chemical elements needed for life. ...
PH607lec10
... The Sun’s orbital speed is 217 km/s, i.e. 1 light-year in ca. 1400 years, and 1 AU in 8 days. It would take the solar system about 225-250 million years to complete one orbit ("galactic year"), and so is thought to have completed about 20-25 orbits during its lifetime. (Age 13.4-13.6 billion years?) ...
... The Sun’s orbital speed is 217 km/s, i.e. 1 light-year in ca. 1400 years, and 1 AU in 8 days. It would take the solar system about 225-250 million years to complete one orbit ("galactic year"), and so is thought to have completed about 20-25 orbits during its lifetime. (Age 13.4-13.6 billion years?) ...
Whirlpool Galaxy - astronomydennis
... galaxy is the closeness it is to the galaxy NGC 5195, which appears to tug at the whirlpool, leading astronomers to hypothesis that this is the reason for the Whirlpool’s two great arms. ...
... galaxy is the closeness it is to the galaxy NGC 5195, which appears to tug at the whirlpool, leading astronomers to hypothesis that this is the reason for the Whirlpool’s two great arms. ...
Galaxies
... to label galaxy types. • E: elliptical galaxy; the number indicates how stretched out the shape is. • S (or SA): regular spiral galaxy; SB: barred spiral galaxy; the small letter indicates how spread out the arms are. ...
... to label galaxy types. • E: elliptical galaxy; the number indicates how stretched out the shape is. • S (or SA): regular spiral galaxy; SB: barred spiral galaxy; the small letter indicates how spread out the arms are. ...
Andromeda and the Local Group Lesson Plan
... Way, and we’ll take a closer look at some of the nebula inside galaxies that are orbiting our own. Show the video. Review what they saw: ...
... Way, and we’ll take a closer look at some of the nebula inside galaxies that are orbiting our own. Show the video. Review what they saw: ...
