English
Related papers

Related papers: Kinematics and photometry as complementary tools i…

200 papers

The disks of galaxies are primarily stellar systems, and fundamentally dynamical entities. Thus, to fully understand galactic disks, we must study their stellar kinematics as well as their morphologies. Observational techniques have now…

Astrophysics · Physics 2007-05-23 Michael R. Merrifield , Konrad Kuijken

The combination of dynamical and photometric properties of galaxies offers a largely un-tapped source of information on how galaxies assembled and where stars formed. Bi-dimensional kinematic measurements have been the stumbling block. The…

These lectures are intended to provide an introduction to the rich interplay between N-body simulations and stellar-kinematic observations of galaxies. The first section describes the kinematic properties of galaxies that are accessible to…

Astrophysics · Physics 2007-05-23 Michael R. Merrifield

Determining the internal kinematics of a galaxy from planetary nebulae (PN) is usually a two step process in which the candidate PN are first identified in a target galaxy and then, in a follow up run, spectra are obtained. We have…

Astrophysics · Physics 2009-10-30 N. G. Douglas , K. Taylor

Upcoming or future deep galaxy samples with wide sky coverage can provide independent measurement of the kinematic dipole - our motion relative to the rest frame defined by the large-scale structure. Such a measurement would present an…

Cosmology and Nongalactic Astrophysics · Physics 2015-11-11 Mijin Yoon , Dragan Huterer

Results from kinematic observations of the central regions of spiral galaxies are reviewed, with particular emphasis on starburst and AGN hosts. While morphological studies lead to important insight, a more complete understanding of the…

Astrophysics · Physics 2007-05-23 Johan H. Knapen

Galaxies are faint enough when one observes just their light distributions, but in studying their full dynamical structure the stars are spread over the six dimensions of phase space rather than just the three spatial dimensions, making…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Michael R. Merrifield , the PN. S Consortium

We show that the kinematics of the shells seen around some elliptical galaxies provide a new, independent means for measuring the gravitational potentials of elliptical galaxies out to large radii. A numerical simulation of a set of shells…

Astrophysics · Physics 2009-10-30 M. R. Merrifield , K. Kuijken

The detailed structure of the Galactic bulge still remain uncertain. The strong difficulties of obtaining observations of stars in the Galactic bulge have hindered the acquisition of a kinematic representation for the inner kpc of the Milky…

Astrophysics of Galaxies · Physics 2015-06-04 M. Soto , K. Kuijken , R. M. Rich

The kinematic and dynamical properties of galaxy stellar halos are difficult to measure because of the faint surface brightness that characterizes these regions. Spiral galaxies can be probed using the radio HI emission; on the contrary,…

Astrophysics of Galaxies · Physics 2016-12-01 Lodovico Coccato

Significant fraction of barred galaxies hosts secondary bar-like structures on optical and NIR images. The circumnuclear dynamics of double-barred objects are still not well understood, observational data concerning kinematics are…

Astrophysics · Physics 2008-11-24 A. V. Moiseev

We present a 3D Bayesian method to model the kinematics of strongly lensed galaxies from spatially-resolved emission-line observations. This technique enables us to simultaneously recover the lens-mass distribution and the source kinematics…

Astrophysics of Galaxies · Physics 2018-09-21 Francesca Rizzo , Simona Vegetti , Filippo Fraternali , Enrico Di Teodoro

Galaxy spectra are a rich source of kinematical information since the shapes of the absorption lines reflect the movement of stars along the line-of-sight. We present a technique to directly build a dynamical model for a galaxy by fitting…

Astrophysics · Physics 2009-10-30 S. De Rijcke , H. Dejonghe

We compare the results of the photometrical analysis of barred galaxies with those of a similar analysis from N-body simulations. The photometry is for a sample of nine barred galaxies observed in the J and Ks bands with the CANICA near…

Cosmology and Nongalactic Astrophysics · Physics 2009-10-06 E. Athanassoula , D. A. Gadotti , L. Carrasco , A. Bosma , R. E. de Souza , E. Recillas

A quasi self-consistent model for a barred structure in the central regions of our Galaxy is used to calculate the signature of such a triaxial structure on the kinematical properties of star samples. We argue that, due to the presence of a…

Astrophysics · Physics 2009-10-30 P. Vauterin , H. Dejonghe

The dynamical and virial mass of the Milky Way galaxy is estimated using latest high precision stellar halo and dwarf galaxy satellite kinematics. The new data suggest the Galaxy is a highly compact, classically thermalized object.…

Astrophysics of Galaxies · Physics 2020-08-25 Jeffrey M. La Fortune

The structure, kinematics and dynamics of the Galactic stellar halo are reviewed including evidence of substructure in the spatial distribution and kinematics of halo stars. Implications for galaxy formation theory are subsequently…

Astrophysics · Physics 2009-10-31 Jesper Sommer-Larsen

Some 30% of disc galaxies have a pronounced central bar feature in the disc plane and many more have weaker features of a similar kind. Kinematic data indicate that the bar constitutes a major non-axisymmetric component of the mass…

Astrophysics · Physics 2009-11-11 J. A. Sellwood , A. Wilkinson

Galactic bulges are complex systems. Once thought to be small-scale versions of elliptical galaxies, advances in astronomical instrumentation (spectroscopy in particular) has revealed a wealth of photometric and kinematic substructure in…

Astrophysics of Galaxies · Physics 2015-12-09 Jesús Falcón-Barroso

To investigate the origins of S0 galaxies, we present a new method of analyzing their stellar kinematics from discrete tracers such as planetary nebulae. This method involves binning the data in the radial direction so as to extract the…

‹ Prev 1 2 3 10 Next ›