Keywords: Galactic Structure (6)

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Colliding Galaxies
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Colliding Galaxies

The Colliding Galaxies Model is an implementation of Alar and Juri Toomres' ... (more)

The Colliding Galaxies Model is an implementation of Alar and Juri Toomres' 1972 super computer model showing the formation of galactic bridges and tails under the assumption that galactic cores are point masses and that one galactic core is surrounded by 2D concentric rings of orbiting stars. The model assumes is that the stars (test particles) orbiting the galactic cores are non-interacting. When the two galaxies pass one another, tidal forces deform the star distribution into classic tidal features. Our EJS model reproduces this result showing that there is a long curving tail and that only the outermost ring of stars is affected by its companion galaxy. A thin bridge is also formed and some of the stars are captured by the companion galactic core. (less)

Subject:
Science and Technology
Computing and Information
Physics
Space Science
Technology
Material Type:
Instructional Material
Interactive
Provider:
comPADRE
ComPADRE Digital Library
Provider Set:
Open Source Physics
ComPADRE: Resources for Physics and Astronomy Education
Author:
Kyung Taek Lim
Wolfgang Christian
Galaxy Zoo
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Galaxy Zoo

Galaxy Zoo is an ongoing research project to classify millions of galaxies. ... (more)

Galaxy Zoo is an ongoing research project to classify millions of galaxies. The website has a short tutorial to teach the user how to classify the galaxies. Once they have passed a trial proving their ability, they are allowed to create an account and save their classifications to Galaxy Zoo's database. The images being classified come from the SDSS (Sloan Digital Sky Survey). (less)

Subject:
Life Science
Physics
Space Science
Material Type:
Activities and Labs
Instructional Material
Reference
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
The Hubble Law
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The Hubble Law

Here students will have an opportunity to measure redshifts for several galaxies ... (more)

Here students will have an opportunity to measure redshifts for several galaxies using a set of common spectral lines here. While the spectra that students will be using have many lines (emission and absorption) students must concentrate on using the following sets: calcium H and K and hydrogen emission lines . Students are asked to determine if there is a correlation between the presence of emission lines in the spectra and the overall appearance (morphology) of the galaxy. (less)

Subject:
Physics
Space Science
Material Type:
Activities and Labs
Instructional Material
Interactive
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
Author:
University of Oregon Physics Department
An Introduction to Modern Astrophysics
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An Introduction to Modern Astrophysics

This text presents modern astrophysics using the basic tools of physics. The ... (more)

This text presents modern astrophysics using the basic tools of physics. The text can be used for a course in stellar structure and evolution, with additional material on the solar system, galactic structure, dynamics, evolution, and cosmology. (less)

Subject:
Physics
Space Science
Education
Material Type:
Instructional Material
Textbooks
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
Author:
Bradley W. Carroll
Dale A. Ostlie
Modern Astrophysics, Spring 2006
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Modern Astrophysics, Spring 2006

Applications of physics (Newtonian, statistical, and quantum mechanics) to fundamental processes that ... (more)

Applications of physics (Newtonian, statistical, and quantum mechanics) to fundamental processes that occur in celestial objects. Includes main-sequence stars, collapsed stars (white dwarfs, neutron stars, and black holes), pulsars, supernovae, the interstellar medium, galaxies, and as time permits, active galaxies, quasars, and cosmology. Observational data discussed. No prior knowledge of astronomy is required. (less)

Subject:
Science and Technology
Material Type:
Full Course
Homework and Assignments
Lecture Notes
Syllabi
Provider:
M.I.T.
Provider Set:
MIT OpenCourseWare
Author:
Schechter, Paul
Orbits Within Spherical Galaxies Model
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Orbits Within Spherical Galaxies Model

The Orbits Within Spherical Galaxies model displays the two-dimensional trajectories of particles ... (more)

The Orbits Within Spherical Galaxies model displays the two-dimensional trajectories of particles (stars) within a galaxy having a spherically symmetric mass distribution that heuristically approximates the distributions found in galaxies and bulges. The model uses a mass density proposed by Walter Dehnen to describe spatial distributions that vary as r⁻⁴ and r⁻g in galactic envelopes and cores where g is an adjustable power-law parameter. Units are chosen such that a typical galaxy has total mass M=1 and that the gravitational constant G=1. The Orbits Within Spherical Galaxies model is a supplemental simulation for the article <a href="http://dx.doi.org/10.1119/1.3549737">"Radial motion in a central potential for singular mass densities"</a> by Ulrich Zürcher and Miron Kaufman in the American Journal of Physics 79(5), 521-526 (2011) and has been approved by the authors and the American Journal of Physics (AJP) editor. The simulation was developed using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_mech_orbits_OrbitsWithinSphericalGalaxies.jar file will run the program if Java is installed. (less)

Subject:
Physics
Space Science
Technology
Material Type:
Instructional Material
Interactive
Provider:
ComPADRE Digital Library
Provider Set:
ComPADRE: Resources for Physics and Astronomy Education
Author:
Wolfgang Christian
2002 llaF ,gnivloS melborP gnireenignE dna sretupmoC ot noitcudortnI

2002 llaF ,gnivloS melborP gnireenignE dna sretupmoC ot noitcudortnI

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