• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
June 2012 - smile2340
June 2012 - smile2340

... gas). Some teachers may have even added plasma (example: lightning) making four states of matter. However, just like everyone thought infinity was infinity until Cantor proved there are actually an infinite number of infinities; there are actually many more states of matter. A list bringing it up to ...
Astronomy Syllabus - Jefferson Forest High School
Astronomy Syllabus - Jefferson Forest High School

... Students will complete all work individually and on time. All homework is due when the tardy bell rings. If it is not turned in at that time, it is considered to be late. Work for other classes may NOT be completed in my classroom. All other work will be confiscated and returned at the END of class. ...
UniverseofGalaxies
UniverseofGalaxies

... – No spiral structure – Blue, many young stars – Patchy light distribution ...
presentation source
presentation source

... and grow very massive, maybe millions of MO •If galaxy massive enough, or through encounters with other galaxies, could grow even more massive •As galaxy ages, available mass drops and activity diminishes ...
The Science of Life in the Universe (Chap 2
The Science of Life in the Universe (Chap 2

... Fusion generated energy that pushes out from the center of a star. Gas pressure that maintains a push out from the center. The weight of the star (gravity) that keeps pulling the stellar material to the center of ...
file - University of California San Diego
file - University of California San Diego

... "A redshift greater than 3.1 is just large enough that the spectral lines of both ionized and neutral helium are pulled from the far ultraviolet into the visible range of the Faint Object Spectrograph," Burbidge says. "Helium is a very important element for cosmologists. It was supposed to have bee ...
The Science of Life in the Universe (Chap 2
The Science of Life in the Universe (Chap 2

... Fusion generated energy that pushes out from the center of a star. Gas pressure that maintains a push out from the center. The weight of the star (gravity) that keeps pulling the stellar material to the center of ...
Chapter 3 Notes
Chapter 3 Notes

... Fusion generated energy that pushes out from the center of a star. Gas pressure that maintains a push out from the center. The weight of the star (gravity) that keeps pulling the stellar material to the center of ...
The Kunlun Infrared Sky Survey
The Kunlun Infrared Sky Survey

... modelled a static distribution of central (~0.1pc) hot dust  Associated stars have central velocity dispersion measurable ...
Astronomy (ASTR)
Astronomy (ASTR)

... Century Cosmology. Modern cosmology, buttressed by increasingly precise observational data provided by space missions like HST, COBE, and WMAP, teaches that the universe is composed primarily of matter we cannot see nor properly characterize, the so-called 'dark matter,' and of energy whose source i ...
TF_final3 - Arecibo Observatory
TF_final3 - Arecibo Observatory

... i in infrared. The TullyFisher relation states that the bigger the galaxy is, the faster it rotates. The faster the galaxy rotates, the wider is the emission line in velocity. Also, the bigger the galaxy, the more is its luminosity. TullyFisher relation shows that for normal galaxies, the velocity w ...
The Intricate Role of Cold Gas and Dust in Galaxy Evolution at Early
The Intricate Role of Cold Gas and Dust in Galaxy Evolution at Early

... - ALMA suitable to detect star-forming gas in z>5 Ly-break galaxies - [CII] 158 !m: good indicator of redshifts and galaxy dynamics at z>5 - [CII] easier to detect than dust in early galaxies, as metallicity drops - now directly observed drop in IRX-$ from z=3 to z=6 with ALMA: ! ...
Cosmological Aspects of Nucleosynthesis
Cosmological Aspects of Nucleosynthesis

... More than 3 neutrino-families would have contributed to the mass density of ultrarelativistic particles. This would have speeded up the expansion in the radiationdominated universe. Neutrino would decouple at higher temperature and Helium would have been overproduced. Agreement with elementary parti ...
As far as - Sangeeta Malhotra
As far as - Sangeeta Malhotra

... galaxy. The closest object we have identified, an M-type dwarf star we designated Ultra Deep Field (UDF) 366, lies 2,000 light-years away, still in our galaxy’s disk. Most of the stars we detected are lowmass M dwarfs, which are both faint and numerous. We can’t use redshifts to determine distances ...
Weaknesses in Gravity and Cosmology Theories-19-06-11
Weaknesses in Gravity and Cosmology Theories-19-06-11

... Hence, it is clear that special relativity is, in a physical reality, nothing more but a part of the Doppler effect in a physical aether. So, there is no new theory to be found at this stage of the analysis. An utmost interesting theory was already found by Oliver Heaviside at the end of the 19th ce ...
Astronomy 104: Homework Set 6 Due: Wednesday, April 1, 2015
Astronomy 104: Homework Set 6 Due: Wednesday, April 1, 2015

... days and a Cepheid in M 31 has a period of 5.2 days. Use the PL relation you discovered in part (a) of this problem to estimate the luminosities of these stars. c) The Cepheid in the LMC is 10000 times brighter than the one in M31 as seen from Earth. Use the relation between brightness (flux), lumin ...
Weaknesses in Gravity and Cosmology Theories-19-06-11
Weaknesses in Gravity and Cosmology Theories-19-06-11

... Hence, it is clear that special relativity is, in a physical reality, nothing more but a part of the Doppler effect in a physical aether. So, there is no new theory to be found at this stage of the analysis. An utmost interesting theory was already found by Oliver Heaviside at the end of the 19th ce ...
PHYS 390 Lecture 31 - Kinematics of galaxies 31
PHYS 390 Lecture 31 - Kinematics of galaxies 31

... That the mass enclosed within Ro is about 1011 solar masses is at once both comforting and disturbing. Comforting, in that it is the correct order of magnitude, as the mass of visible matter in the Milky Way is about 1011 solar masses, as previously mentioned. However, not all of this mass lies with ...
Extremely Large Telescopes
Extremely Large Telescopes

... of the IGM at early times from CIV forest. ...
Chapter 26
Chapter 26

... began, how it evolves, and what it is made of—is known as cosmology. ...
E1 Introduction to the universe
E1 Introduction to the universe

... there could be new particles that we do not know about. These are the Weakly Interacting Massive Particles. Many experimenters around the world are searching for these so-called WIMPs. perhaps our current theories of gravity are not completely correct. Some theories try to explain the missing matter ...
Galaxy Far Far Away ppt
Galaxy Far Far Away ppt

... By looking at the radial velocities of surrounding stars, we can estimate the Sun’s velocity to be about 220 km/s. It takes about 240 million years for the Sun to orbit the center of the galaxy! ...
PHYSICS 1500 - The University of Sydney
PHYSICS 1500 - The University of Sydney

... + 2.3 for l Carinae. Which of the following statements most accurately describes the brightness of l Carinae? (a) (b) (c) (d) (e) ...
Questions - Clever Teach
Questions - Clever Teach

... supported the Big Bang theory. This should then be coupled with an understanding of the significance of another observation; cosmic microwave background radiation. Candidates were not asked to describe the Big Bang or Steady State theories in detail and many candidates devoted a large part of their ...
the Full Chapter 6 -
the Full Chapter 6 -

... Hubble has studied thousands of individual stars in giant globular clusters — the oldest stellar families in the Universe. And galaxies. Astronomers have never seen so much detail. Majestic spirals, absorbing dust lanes, violent collisions. Extremely long exposures of blank regions of sky have revea ...
< 1 ... 22 23 24 25 26 27 28 29 30 ... 44 >

Structure formation

In physical cosmology, structure formation refers to the formation of galaxies, galaxy clusters and larger structures from small early density fluctuations. The Universe, as is now known from observations of the cosmic microwave background radiation, began in a hot, dense, nearly uniform state approximately 13.8 billion years ago. However, looking in the sky today, we see structures on all scales, from stars and planets to galaxies and, on still larger scales still, galaxy clusters and sheet-like structures of galaxies separated by enormous voids containing few galaxies. Structure formation attempts to model how these structures formed by gravitational instability of small early density ripples.The modern Lambda-CDM model is successful at predicting the observed large-scale distribution of galaxies, clusters and voids; but on the scale of individual galaxies there are many complications due to highly nonlinear processes involving baryonic physics, gas heating and cooling, star formation and feedback. Understanding the processes of galaxy formation is a major topic of modern cosmology research, both via observations such as the Hubble Ultra-Deep Field and via large computer simulations.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report