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Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz


IMPACT FACTOR 2018: 0.350

CiteScore 2018: 0.24

SCImago Journal Rank (SJR) 2018: 0.202
Source Normalized Impact per Paper (SNIP) 2018: 0.144

ICV 2017: 121.03

Open Access
Online
ISSN
2543-6376
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Volume 21, Issue 4

Issues

Kinematic Modeling of Distant Galaxies

Rain Kipper
  • Corresponding author
  • Institute of Physics, University of Tartu, 51010 Tartu, Estonia Estonia
  • Tartu Observatory, 61602 Tõravere, Estonia
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Elmo Tempel
  • Tartu Observatory, 61602 Tõravere, Estonia Estonia
  • National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Antti Tamm
Published Online: 2017-03-23 | DOI: https://doi.org/10.1515/astro-2017-0408

Abstract

Evolution of galaxies is one of the most actual topics in astrophysics. Among the most important factors determining the evolution are two galactic components which are difficult or even impossible to detect optically: the gaseous disks and the dark matter halo. We use deep Hubble Space Telescope images to construct a two-component (bulge + disk) model for stellar matter distribution of galaxies. Properties of the galactic components are derived using a three-dimensional galaxy modeling software, which also estimates disk thickness and inclination angle. We add a gas disk and a dark matter halo and use hydrodynamical equations to calculate gas rotation and dispersion profiles in the resultant gravitational potential. We compare the kinematic profiles with the Team Keck Redshift Survey observations. In this pilot study, two galaxies are analyzed deriving parameters for their stellar components; both galaxies are found to be disk-dominated. Using the kinematical model, the gas mass and stellar mass ratio in the disk are estimated.

Keywords: galaxies; kinematics and dynamics; galaxies; structure

References

About the article

Received: 2012-08-09

Accepted: 2012-09-14

Published Online: 2017-03-23

Published in Print: 2012-12-01


Citation Information: Open Astronomy, Volume 21, Issue 4, Pages 523–529, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0408.

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© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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