Results 121 to 130 of about 9,531 (227)
Retarded Gravity in Disk Galaxies
SymmetryDisk galaxies have a typical dimension of a few tens of kiloparsecs. It follows from the theory of general relativity that any signal originating from the galactic center will be noticed at the outskirts of the galaxy only tens of thousands of years later.
Yuval Glass +2 more
openaire +1 more source
Proceedings of the International Astronomical Union, 2009 AbstractWe review our knowledge about the spiral structure of the disk of our Galaxy using tracers of star formation. These tracers reveal a 4-arm picture of the Galaxy.
openaire +1 more source
Molecular hydrogen as dark mass in dwarf galaxies [PDF]
, 2004 We report here an example of a series of computer simulations of the formation of disk galaxies, including a standard cold dark matter component, gas, and star formation, which result in objects which closely resemble observed giant galaxies, with a ...
Nelson, AH +7 more
core
Galaxias Enanas del Grupo Local
Momento, 2009 The satellite galaxies of the Milky Way are very important both for the studies of the formation and evolution of galaxies and for the research on the dark matter problem. In the present review paper some structural properties of the Local Group, as well
A Casallas Lagos +2 more
doaj
The clustering of galaxies in hierarchical galaxy formation models [PDF]
, 2010 Galaxy clustering encodes information about the values of cosmological parameters and also about the physical processes behind galaxy formation and evolution. The GALFORM semi-analytical model is the theoretical approach we used to model galaxy formation.
KIM, HAN,SIK, Kim, Han Sik
core
The Astrophysical Journal Supplement SeriesWe analyze a clean sample of 1118 late-type, face-on galaxies without active galactic nucleus contamination from the MaNGA survey. Their photometric structures are quantified via two-component (bulge + disk) decompositions of deep g -band images from the
Mengting Shen +9 more
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Angular momentum in the formation of disk galaxies [PDF]
, 2004 Within the current framework of disk galaxy formation, we discuss the resulted surface-density profiles according to the theoretical angular momentum distributions (AMDs) presented by Bullock et al. [Astrophys. J.
Shu, CG, Luo, ZJ
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, 2013 We calculate the stellar surface mass density (Sigma_*) and two-component (gas+stars) disk stability (Q_RW) for 25 late-type galaxies from the DiskMass Survey. These calculations are based on fits of a dynamical model to our ionized-gas and stellar kinematic data performed using a Markov Chain Monte Carlo sampling of the Bayesian posterior ...
Westfall, K. B. +5 more
openaire +4 more sources
The curious case of offset bars : markers for a baby galaxy disk or signposts of an interaction with dark matter sub halos? [PDF]
, 2016 >Magister Scientiae - MScWe have used the Spitzer Survey of Stellar Structure in Galaxies (S⁴G) as a representative sample of the local universe (total of 2352 galaxies in S⁴G) to make a catalog of offset disk barred galaxies.
Fortune, Marc Harris Yao
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A Full Accounting of the Visible Mass in SDSS MaNGA Disk Galaxies
The Astrophysical JournalWe present a study of the ratio of visible mass to total mass in spiral galaxies to better understand the relative amount of dark matter present in galaxies of different masses and evolutionary stages.
Nitya Ravi +2 more
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