Entropy and Mass Distribution in Disc Galaxies
Galaxies, 2020 The relaxed motion of stars and gas in galactic discs is well approximated by a rotational velocity that is a function of radial position only, implying that individual components have lost any information about their prior states.
John Herbert Marr
doaj +1 more source
An analytical model to kinematically identify thin discs in MaNGA galaxies [PDF]
, 2021 We present an analytical model to identify thin discs in galaxies, and apply this model to a sample of SDSS MaNGA galaxies. This model fits the velocity and velocity dispersion fields of galaxies with regular kinematics. By introducing two parameters $\zeta$ related to the comparison of the model's asymmetric drift correction to the observed gas ...
arxiv +1 more source
External pressure-triggering of star formation in a disc galaxy: a template for positive feedback [PDF]
, 2015 Feedback from active galactic nuclei (AGN) has often been invoked both in simulations and in interpreting observations for regulating star formation and quenching cooling flows in massive galaxies.
R. Bieri +4 more
semanticscholar +1 more source
A Comparison of the Simulations and Observations for a Nearby Spiral Arm
Frontiers in Astronomy and Space Sciences, 2021 The analysis is focused on the ability of galactic open clusters to trace the spiral arms, based on the recent data releases from Gaia. For this, a simple 1D description of the motion of spiral arms and clusters is introduced.
Martin Piecka, Ernst Paunzen
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The history of stellar metallicity in a simulated disc galaxy [PDF]
, 2015 We explore the chemical distribution of stars in a simulated galaxy. Using simulations of the same initial conditions but with two different feedback schemes (McMaster Unbiased Galaxy Simulations – MUGS – and Making Galaxies in a Cosmological Context ...
O. Snaith +7 more
semanticscholar +1 more source
The contribution of the dark matter to the rotation of spiral galaxies and its mass distribution [PDF]
Serbian Astronomical Journal, 1999 The rotation of a test spiral galaxy with two contributors - the disc and the corona - is considered. The disc is exponential, whereas the corona is the dark subsystem. For the latter several variants of mass distribution are considered.
Ninković S.
doaj +1 more source
The Halo Shape and Evolution of Polar Disc Galaxies [PDF]
, 2012 We examine the properties and evolution of a simulated polar disc galaxy. This galaxy is comprised of two orthogonal discs, one of which contains old stars (old stellar disc), and the other, containing both younger stars and the cold gas (polar disc) of ...
A. Knebe +62 more
core +6 more sources
REBELS-25: Discovery of a dynamically cold disc galaxy at z = 7.31 [PDF]
Monthly notices of the Royal Astronomical SocietyWe present high resolution (∼0.14” = 710 pc) ALMA [CII] 158μm and dust continuum follow-up observations of REBELS-25, a [CII]-luminous (L[CII] = (1.7 ± 0.2) × 109L⊙) galaxy at redshift z = 7.3065 ± 0.0001.
L. Rowland +23 more
semanticscholar +1 more source
Diffuse gas properties and stellar metallicities in cosmological simulations of disc galaxy formation [PDF]
, 2014 We analyse the properties of the circum-galactic medium and the relation between its metal content and that of the stars comprising the central galaxy in eight hydrodynamical ‘zoom-in’ simulations of disc galaxy formation.
F. Marinacci +3 more
semanticscholar +1 more source
The LISA-Taiji Network: Precision Localization of Coalescing Massive Black Hole Binaries
Research, 2021 We explore a potential LISA-Taiji network to fast and accurately localize the coalescing massive black hole binaries. For an equal-mass binary located at redshift of 1 with a total intrinsic mass of 105M⊙, the LISA-Taiji network may achieve almost four ...
Wen-Hong Ruan +4 more
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