Results 131 to 140 of about 341,567 (228)
Ultradeep Imaging of Nearby Dwarf Irregular Galaxies: Stellar Haloes and Disk Structure
The Astronomical JournalWe have examined the stellar structure of 10 nearby, low stellar mass (10 ^6 –6 × 10 ^7 M _⊙ ) dwarf irregular galaxies by fitting ellipses as a function of surface brightness on ultradeep V images. These are compared to far-ultraviolet images as tracers
Deidre A. Hunter, Bruce G. Elmegreen
doaj +1 more source
, 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
MUSE Study of Two Giant Low-surface-brightness Galaxies with Compact Satellites
The Astrophysical JournalGiant low-surface-brightness galaxies (gLSBGs) are rare objects with disk radii up to 160 kpc and dynamical masses of up to the order of 10 ^12 M _⊙ . Their very existence challenges currently accepted theories of galaxy formation and evolution, as it is
Anna S. Saburova +9 more
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What determines the bulge to disk ratio of galaxies [PDF]
, 1990 Galaxies having the same luminosity may have very different bulge to disk ratios, while the mean bulge to disk ratio slowly increases with total luminosity (Schecter and Dressler, 1987, Sandage et al., 1985).
Roos, Nico
core
The effect of the environment on the evolution of galaxy colours [PDF]
, 2006 In chapter 1 of this thesis, I give a brief overview of the birth of modern cosmology and the growth of the current paradigm. I then go on to describe the different types of galaxies, the star formation rates within them and give some notes about galaxy ...
Davies, Gregory Tudor
core
The dynamics of molecular gas in nearby galaxies [PDF]
, 2013 Includes abstract.
Frank, Bradley Stanton
core +1 more source
Spiral structure of disk galaxies and hidden mass effect
Известия высших учебных заведений. Поволжский регион: Физико-математические наукиBackground. A theory of disk galaxies with a violation of cylindrical symmetry is being constructed, which solves the problem of the spiral structure of galaxies within the framework of a general density wave model. Materials and methods.
V.M. Zhuravlev
doaj +1 more source
The Spatial Distribution of Type Ia Supernovae within Host Galaxies
The Astronomical JournalWe study how type Ia supernovae (SNe Ia) are spatially distributed within their host galaxies, using data taken from the Sloan Digital Sky Survey (SDSS).
Christopher Pritchet +3 more
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The Dependency of Bar Formation Timescale on Disk Mass Fraction, Toomre Q, and Scale Height
The Astrophysical JournalBars are one of the most prominent galactic structures. The classical swing-amplification theory can qualitatively describe the spontaneous bar instability of stellar disks.
Bin-Hui Chen, Juntai Shen
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