Ch. 13 GALAXIES
... A. ~ ___ % of galaxies – very ______ B. Wide range of EM radiation II. Types of Active Galaxies A. ___________ galaxies – “normal” galaxies undergoing aggressive star formation due to interactions Ex/ M82 – The ______ Galaxy B. ____________ galaxies – resemble spirals, but with very energetic galact ...
... A. ~ ___ % of galaxies – very ______ B. Wide range of EM radiation II. Types of Active Galaxies A. ___________ galaxies – “normal” galaxies undergoing aggressive star formation due to interactions Ex/ M82 – The ______ Galaxy B. ____________ galaxies – resemble spirals, but with very energetic galact ...
Is the initial mass function universal?
... Morten Andersen, M. R. Meyer, J. Greissl, B. D. Oppenheimer, M. Kenworthy, D. McCarthy Steward Observatory, University of Arizona, USA H. Zinnecker, AIP, Potsdam, Germany ...
... Morten Andersen, M. R. Meyer, J. Greissl, B. D. Oppenheimer, M. Kenworthy, D. McCarthy Steward Observatory, University of Arizona, USA H. Zinnecker, AIP, Potsdam, Germany ...
Galaxies - science1d
... More dust means more stars Stars form from dust and gases present in nebulae Older galaxies have less dust because it has all ...
... More dust means more stars Stars form from dust and gases present in nebulae Older galaxies have less dust because it has all ...
WFIRSTSurveyScience
... Studies of low mass populations (encompassing stars, brown dwarfs, and even free-floating planetary mass objects) are hindered in star forming regions due to observational and astrophysical effects. These include: the large angular sizes of the nearby molecular clouds harboring newborn and young ste ...
... Studies of low mass populations (encompassing stars, brown dwarfs, and even free-floating planetary mass objects) are hindered in star forming regions due to observational and astrophysical effects. These include: the large angular sizes of the nearby molecular clouds harboring newborn and young ste ...
Gravitational potential energy
... However, the gravitational energy density of a sound wave is negative, since the enhanced attraction in the compressed regions overwhelms the reduced attraction in the dilated regions. • The Jeans instability sets in wherethe net energy density becomes negative, so that the system can evolve to a l ...
... However, the gravitational energy density of a sound wave is negative, since the enhanced attraction in the compressed regions overwhelms the reduced attraction in the dilated regions. • The Jeans instability sets in wherethe net energy density becomes negative, so that the system can evolve to a l ...
CELT Review: 1,2 May 2002 Session 1
... The development and evolution of structure in the universe The emergence of the first galaxies The physics of star formation The formation and evolution of planetary systems Physical processes in the Solar System The star formation and chemical evolution history of galaxies in the local universe. ...
... The development and evolution of structure in the universe The emergence of the first galaxies The physics of star formation The formation and evolution of planetary systems Physical processes in the Solar System The star formation and chemical evolution history of galaxies in the local universe. ...
Dark Matter in the Universe:
... As a MACHO passes near the line-of-sight to a star in the Large Magellanic Cloud, the star will appear to brighten and then return to normal (twinkle!) How much the star brightens depends on how close the MACHO comes to the line-of-sight. How long it appears to be brighter depends on how fast the MA ...
... As a MACHO passes near the line-of-sight to a star in the Large Magellanic Cloud, the star will appear to brighten and then return to normal (twinkle!) How much the star brightens depends on how close the MACHO comes to the line-of-sight. How long it appears to be brighter depends on how fast the MA ...
What is the Universe made of?
... people are made from. All matter is made up of combinations of 6 quarks, 6 leptons and their antiparticles. Particles such as the electron and neutrino are known as leptons. Particles such as the proton and neutron are made of three quarks, and are called baryons. Scientists often refer to ordinary ...
... people are made from. All matter is made up of combinations of 6 quarks, 6 leptons and their antiparticles. Particles such as the electron and neutrino are known as leptons. Particles such as the proton and neutron are made of three quarks, and are called baryons. Scientists often refer to ordinary ...
Messing Up a Galaxy
... You may have heard of dwarf galaxies. Astronomers think that large galaxies were formed from collections of these dwarfs coalescing, but this is the opposite situation: dwarf galaxies being born from the collisions between galaxies. It's interesting to note how astronomers know the difference — but ...
... You may have heard of dwarf galaxies. Astronomers think that large galaxies were formed from collections of these dwarfs coalescing, but this is the opposite situation: dwarf galaxies being born from the collisions between galaxies. It's interesting to note how astronomers know the difference — but ...
The Transient Radio Sky Astrophysical and Artificial
... Cosmic reionization and first light HI + continuum survey: galaxy evolution and dark energy Cosmic magnetism: origin and evolution Strong field tests of GR using pulsars Cradle of Life: Terrestrial planet ...
... Cosmic reionization and first light HI + continuum survey: galaxy evolution and dark energy Cosmic magnetism: origin and evolution Strong field tests of GR using pulsars Cradle of Life: Terrestrial planet ...
Weak gravitational lensing
While the presence of any mass bends the path of light passing near it, this effect rarely produces the giant arcs and multiple images associated with strong gravitational lensing. Most lines of sight in the universe are thoroughly in the weak lensing regime, in which the deflection is impossible to detect in a single background source. However, even in these cases, the presence of the foreground mass can be detected, by way of a systematic alignment of background sources around the lensing mass. Weak gravitational lensing is thus an intrinsically statistical measurement, but it provides a way to measure the masses of astronomical objects without requiring assumptions about their composition or dynamical state.