Rotation Curves:
... Mass to light ratios: • By comparing the mass of a spiral (determined via the rotation curve) to its light, we can estimate the massto-light ratio within the optical disk. These values range from M/L ~3.7 in Sd’s to ~6.5 for S0s • We can also integrate to find a total mass of a spiral galaxy (at lea ...
... Mass to light ratios: • By comparing the mass of a spiral (determined via the rotation curve) to its light, we can estimate the massto-light ratio within the optical disk. These values range from M/L ~3.7 in Sd’s to ~6.5 for S0s • We can also integrate to find a total mass of a spiral galaxy (at lea ...
Think about the universe
... of gods, animals or familiar objects. The most wellknown constellations are the 12 groups we know as the signs of the zodiac. These constellations follow the ecliptic and their names include Taurus (the bull), Leo (the lion) and Sagittarius (the archer). You probably know the rest. If not, a discuss ...
... of gods, animals or familiar objects. The most wellknown constellations are the 12 groups we know as the signs of the zodiac. These constellations follow the ecliptic and their names include Taurus (the bull), Leo (the lion) and Sagittarius (the archer). You probably know the rest. If not, a discuss ...
doc - Jnoodle
... The stars "near" us form the Milky Way, a galaxy containing ca 100 billion stars shaped like a disc with some spiral arms. The size of our galaxy is the order of magnitude 100 000 ly and it rotates around its center in ca 200 - 300 million years. Except start there is mostly thin interstellar matter ...
... The stars "near" us form the Milky Way, a galaxy containing ca 100 billion stars shaped like a disc with some spiral arms. The size of our galaxy is the order of magnitude 100 000 ly and it rotates around its center in ca 200 - 300 million years. Except start there is mostly thin interstellar matter ...
Properties of Ellipticals and Spirals
... Æ Age of Galaxy correlates to the time since the last major star formation epoch. ...
... Æ Age of Galaxy correlates to the time since the last major star formation epoch. ...
Chapter 26: Stars, Galaxies, and the Universe Stars
... collapse shrinks the star's core to a white, glowing object about the size of Earth. A star at this point is called a white dwarf. Eventually, a white dwarf cools down and its light fades out. Supergiants and Supernovas A star that has much more mass than the Sun will end its life in a more dramatic ...
... collapse shrinks the star's core to a white, glowing object about the size of Earth. A star at this point is called a white dwarf. Eventually, a white dwarf cools down and its light fades out. Supergiants and Supernovas A star that has much more mass than the Sun will end its life in a more dramatic ...
21. Galaxy Evolution Agenda The Monty Hall Problem/Paradox 21.1
... we are unable to see back to the time when galaxies first formed we must rely on theoretical (computer) models to describe how galaxies formed ...
... we are unable to see back to the time when galaxies first formed we must rely on theoretical (computer) models to describe how galaxies formed ...
Astro Physics Notes and Study Guide 2015-17
... Describe the discovery of cosmic background (CMB) radiation by Penzias and Wilson. ...
... Describe the discovery of cosmic background (CMB) radiation by Penzias and Wilson. ...
M101: The Pinwheel Galaxy
... Major (The Great Bear). We are seeing M101 as it looked 25 million years ago.The light we are seeing from the galaxy began its journey to Earth at the beginning of our planet’s Miocene Period, when mammals flourished and the Mastodon first appeared. ...
... Major (The Great Bear). We are seeing M101 as it looked 25 million years ago.The light we are seeing from the galaxy began its journey to Earth at the beginning of our planet’s Miocene Period, when mammals flourished and the Mastodon first appeared. ...
![Gugus Bintang [Compatibility Mode]](http://s1.studyres.com/store/data/007745973_1-cdf92b37339f4354c66eef546bd46492-300x300.png)
Gugus Bintang [Compatibility Mode]
... • Do galaxies cluster together like stars do? • When we look around, we do indeed see that galaxies appear in clusters, and appear to orbit one another by their mutual gravity. • The Milky Way is one of about 40 or so galaxies that form the Local Group. Andromeda (another spiral-B galaxy about 2 mil ...
... • Do galaxies cluster together like stars do? • When we look around, we do indeed see that galaxies appear in clusters, and appear to orbit one another by their mutual gravity. • The Milky Way is one of about 40 or so galaxies that form the Local Group. Andromeda (another spiral-B galaxy about 2 mil ...
Active Galactic Nuclei
... • Quasars can have up to several 1000 times the luminosity of our Galaxy • The engine powering quasars is only a few light years across or smaller • The only known engine which is powerful enough and compact enough is a black hole • Quasars contain supermassive black holes ...
... • Quasars can have up to several 1000 times the luminosity of our Galaxy • The engine powering quasars is only a few light years across or smaller • The only known engine which is powerful enough and compact enough is a black hole • Quasars contain supermassive black holes ...
the Local Group - Simon P Driver
... classifying the Local Group • the Local Group has only about 10 significant galaxies (L > 108 Lsolar), so does not qualify as a cluster – NB, dwarf spheroidals etc. are not detectable at large distances, so don’t make up part of the total galaxy count for the Local Group • about half of known gal ...
... classifying the Local Group • the Local Group has only about 10 significant galaxies (L > 108 Lsolar), so does not qualify as a cluster – NB, dwarf spheroidals etc. are not detectable at large distances, so don’t make up part of the total galaxy count for the Local Group • about half of known gal ...
Infrared Instrumentation & Observing Techniques
... The small and large scale radio source are aligned to within about 10 deg. The radio sources are aligned to within a few degrees of perpendicular to the “inner" (1 kpc) dust disk but are poorly aligned with the perpendicular to the larger dust lane. The Bardeen-Petterson effect will cause the b ...
... The small and large scale radio source are aligned to within about 10 deg. The radio sources are aligned to within a few degrees of perpendicular to the “inner" (1 kpc) dust disk but are poorly aligned with the perpendicular to the larger dust lane. The Bardeen-Petterson effect will cause the b ...
1 - People Server at UNCW
... (9 pts) Answer the following: a. ________________ assigned the original magnitude range for stars. b. The binding energy of deuterium is ________________. c. After studying the Coma cluster, ________________ introduced the idea of dark matter. d. The Cepheids were first classified by _______________ ...
... (9 pts) Answer the following: a. ________________ assigned the original magnitude range for stars. b. The binding energy of deuterium is ________________. c. After studying the Coma cluster, ________________ introduced the idea of dark matter. d. The Cepheids were first classified by _______________ ...
The Milky Way Galaxy
... Dust is generated in the late stages of low and high mass stars, when carbon and silicon is dredged up from the cores and ejected in stellar winds, planetary nebulae, and possibly supernova remnants. The blocking of visible light by dust is called dust extinction. ...
... Dust is generated in the late stages of low and high mass stars, when carbon and silicon is dredged up from the cores and ejected in stellar winds, planetary nebulae, and possibly supernova remnants. The blocking of visible light by dust is called dust extinction. ...
Quiz 2 Lecture 12
... a. Ring galaxies can be produced by head-on collisions between galaxies. b. The ratio of the number of elliptical to spiral galaxies remains constant over time. c. The Magellanic Clouds may eventually be "cannibalized" by our Galaxy. d. The shape of a galaxy can be influenced by collision with anoth ...
... a. Ring galaxies can be produced by head-on collisions between galaxies. b. The ratio of the number of elliptical to spiral galaxies remains constant over time. c. The Magellanic Clouds may eventually be "cannibalized" by our Galaxy. d. The shape of a galaxy can be influenced by collision with anoth ...
Lecture 2: Gravitational wave sources
... have produced tensor modes that generate nonzero curl in the polarization from low-ℓ modes in the cosmic microwave background. The expected levels will be such that ground-based detectors should see them in the next few years (if Planck doesn’t see them first, which is possible but not at all guaran ...
... have produced tensor modes that generate nonzero curl in the polarization from low-ℓ modes in the cosmic microwave background. The expected levels will be such that ground-based detectors should see them in the next few years (if Planck doesn’t see them first, which is possible but not at all guaran ...
Some Introductory Physics of Sound
... complete vacuum. There is matter lying between the stars – and even between galaxies – in space. These may not form an ‘atmosphere’ as we would obviously recognise it, as such regions are at much lower densities than we ever experience on Earth. The air molecules in this room only occupy about 1/100 ...
... complete vacuum. There is matter lying between the stars – and even between galaxies – in space. These may not form an ‘atmosphere’ as we would obviously recognise it, as such regions are at much lower densities than we ever experience on Earth. The air molecules in this room only occupy about 1/100 ...
6 The mysterious universe
... releases vast amounts of energy. enough to be seen with the naked eye. The collapse continues under the influence of gravity, forming visible globules in the nebula cloud. As the globules collapse further, the formation of any original gas A quick glance around the night sky shows us that cloud is a ...
... releases vast amounts of energy. enough to be seen with the naked eye. The collapse continues under the influence of gravity, forming visible globules in the nebula cloud. As the globules collapse further, the formation of any original gas A quick glance around the night sky shows us that cloud is a ...
harvest09b - NMSU Astronomy
... To increase signal to noise, select impact parameter bins and co-add spectra in the reference frame of the intervening absorber ...
... To increase signal to noise, select impact parameter bins and co-add spectra in the reference frame of the intervening absorber ...
Chapter 15, Galaxies
... Because the mass of white dwarfs when they explode as supernovae is always around 1.0 M⊙, its luminosity is very consistent, and can be used as a standard candle for the measurement of distance to distant galaxies (Chapter 15). The amount of energy produced by white dwarf supernovae and massive star ...
... Because the mass of white dwarfs when they explode as supernovae is always around 1.0 M⊙, its luminosity is very consistent, and can be used as a standard candle for the measurement of distance to distant galaxies (Chapter 15). The amount of energy produced by white dwarf supernovae and massive star ...
GG_CERN_0707
... (cf pdg.lbl.gov: Eidelman etal 2004) the original work, and origin of this value, is the first analysis to include a full 3-D gravitational potential, parametric modelling, and a direct determination of both the relevant density scale length and kinematic (pressure) gradients from data, allowing ful ...
... (cf pdg.lbl.gov: Eidelman etal 2004) the original work, and origin of this value, is the first analysis to include a full 3-D gravitational potential, parametric modelling, and a direct determination of both the relevant density scale length and kinematic (pressure) gradients from data, allowing ful ...