Questions tagged [galactic-dynamics]
Questions regarding interactions between galaxies or between major parts of a galaxy.
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What is the nature of magnetism within and without the Galatic plane?
Does anything happen to our Solar System after we transit the Galactic plane? Is there one polarity "above" (artificially relatively speaking) the plane, and the opposite polarity "...
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What happens to planets as they cross the Galactic equator?
We know from research that the Solar System travels around the Galactic plane, and sometimes (periodically) dips below the Galactic equator, only to return and dip back above the Galactic equator ...
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The distribution of mass in the bullet cluster
Can someone point me to a database which contains the luminous and gas mass distribution of the bullet cluster?
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Have measurements been conducted on the position of the galactic center of mass and the orbit of the presumed black hole at the center?
Related questions have been raised before
Is our central black hole actually at the CG of the galaxy?
Orbiting supermassive black hole or galactic center of mass?
, where explanations have been given ...
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Does the Final-Parsec problem apply to stellar collisions?
The final parsec problem describes the difficulty of two blackholes merging with one another when their distances reach ~3.2 light years apart. Does this also then apply to stellar collisions, perhaps ...
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How to decide and narrow down the broad topics I should get an astronomy internship on? [closed]
This is to inform that I am a third-year Physics Major student. I am enrolled in a five-year dual degree BS-MS programme at IISER Bhopal, India.
I had a keen pop-science-like interest in astronomy ...
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Have gas or dust or rock accumulated in our solar system on its 20 orbits around the Milky Way?
Also,does the absence of the accumulation of anything large such as rogue planets by the solar system suggest the Milky Way has been orderly and stable for billions of years?
user52681
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Gas mass and velocity in galaxy
I was going through the SPARC data on galaxies (http://astroweb.cwru.edu/SPARC/)
The velocity of gas in the SPARC data is in http://astroweb.cwru.edu/SPARC/MassModels_Lelli2016c.mrt
The gas velocity ...
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Are there some (simple) mathematical models which can simulate the cellular/web structure of the universe?
To visualize the structure of a solar system we have some simple mathematical model: Planets orbiting around a Star in circular motion.
If we want to be more precise the circle becomes a ellipse, the ...
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At what distance does the galactic tide significantly affect the orbit of a heliocentric object?
The title essentially explains the question. I was wondering if the galactic tide could play a role in raising perihelia of extreme trans-Neptunian objects (i.e. Sedna) versus the effect of a ...
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Why is the dark matter component of MOND important in central regions?
A lot of papers say that even the theory of MOND requires the existence of dark matter, particularly in the central regions. However this is a bit counterintuitive to me considering that rotation ...
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How to obtain the SDSS’s five-part imaging ID number for a list of galaxies whose Ra Dec is known?
I am trying to obtain the FITS file of a few hundreds galaxy from SDSS DR12 Survey. SDSS tries to download the FITS File with the link that contains the information about SDSS’s five-part imaging ID ...
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Can the collapse of a gas cloud lead to an elliptical structure?
Is it likely, unlikely, or impossible for an elliptical structure to form when a gas cloud collapses?
Due to the conservation of angular momentum, one would expect that disk structures are much more ...
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dark matter in galaxy cluster in intergalactic space
On the rotation speed of galaxies in a galaxy cluster:
-> Is the dark matter associated with each galaxy in a cluster, sufficient to explain the rotation speed of galaxies in the cluster, or extra ...
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Have we discovered a Galaxy lacking in Dark matter?
This question is relevant but it was speaking about a specific discovery reported by pieter van Dokkum, and the answer then mentioned it was disputed whether the paper's conclusion is even correct.
I ...
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