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Related papers: Dwarf elliptical galaxies with kinematically decou…

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We have analysed HST/WFPC2 F555W and F814W images for fifteen elliptical galaxies with kinematically-distinct cores. For each of them we have derived surface brightness and isophotal parameter profiles in the two bands, color maps, and…

Astrophysics · Physics 2009-10-30 C. M. Carollo , M. Franx , G. D. Illingworth , D. A. Forbes

NGC 205 is the nearest example of a dwarf elliptical (dE) galaxy and the prototype of this enigmatic galaxy class. Photometric evidence suggests that NGC 205, a close satellite of the M31 galaxy, is tidally interacting with its parent…

Astrophysics · Physics 2008-11-26 M. Geha , P. Guhathakurta , R. M. Rich , M. C. Cooper

Sub-arcsecond IRAM Plateau de Bure mm-interferometric observations of the 12CO (2-1) line emission in the Seyfert~1 NGC 3227 and the Seyfert~2 NGC 1068 have revealed complex kinematic systems in the inner 100 pc to 300 pc that are not…

Astrophysics · Physics 2009-10-31 E. Schinnerer , A. Eckart , L. J. Tacconi

We present kinematic and metallicity profiles for the M31 dwarf elliptical (dE) satellite galaxies NGC 147 and NGC 185. The profiles represent the most extensive spectroscopic radial coverage for any dE galaxy, extending to a projected…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 M. Geha , R. P. van der Marel , P. Guhathakurta , K. M. Gilbert , J. Kalirai , E. N. Kirby

We present a 2D kinematic analysis out to ~2-5 effective radii (Re) of 33 massive elliptical galaxies with stellar velocity dispersions larger than 150 km/s. Our observations were taken using the Mitchell Spectrograph (formerly VIRUS-P), a…

Astrophysics of Galaxies · Physics 2015-06-19 Sudhir Raskutti , Jenny Greene , Jeremy Murphy

Integral field spectroscopy surveys provide spatially resolved gas and stellar kinematics of galaxies. They have unveiled a range of atypical kinematic phenomena, which require detailed modelling to understand. We present results from a…

Astrophysics of Galaxies · Physics 2018-06-13 Philip Taylor , Christoph Federrath , Chiaki Kobayashi

In this Paper we investigate the kinematical properties of early-type dwarfs by significantly enlarging the scarce observational sample so far available. We present rotation curves and mean velocity dispersions for four bright dwarf…

Astrophysics · Physics 2016-08-30 S. Pedraz , J. Gorgas , N. Cardiel , P. Sanchez-Blazquez , R. Guzman

We present preliminary results of an extensive study of the fundamental properties of dwarf elliptical galaxies (dEs) in the Coma cluster. Our study will combine HST surface photometry with ground-based UBRIJK photometry and optical…

We present spatially-resolved internal kinematics and stellar chemical abundances for a sample of dwarf elliptical (dE) galaxies in the Virgo Cluster observed with Keck/ESI. We find that 4 out of 17 dEs have major axis rotation velocities…

Astrophysics · Physics 2009-11-07 M. Geha , P. Guhathakurta , R. van der Marel

For a sample of 22 core ellipticals and 22 power law ellipticals, I examine the apparent axis ratios of isophotes as a function of the dynamical time at the isophote's mean radius. The two types of elliptical galaxy have a significantly…

Astrophysics · Physics 2007-05-23 Barbara S. Ryden

We present the first 3D observations of a diffuse elliptical galaxy (dE). The good quality data (S/N up to 40) reveal the kinematical signature of an embedded stellar disc, reminiscent of what is commonly observed in elliptical galaxies,…

Astrophysics · Physics 2008-11-26 Igor Chilingarian , Philippe Prugniel , Olga Sil'chenko , Victor Afanasiev

The dark matter (DM) halos of field elliptical galaxies have not been well studied and their properties appear controversial. While some galaxies appear to be nearly devoid of DM, others show clear evidence of its presence. Furthermore,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 R. Salinas , T. Richtler , L. P. Bassino , A. J. Romanowsky , Y. Schuberth

Encounters between galaxies modify their morphology, kinematics, and star formation (SF) history. The relation between these changes and external perturbations is not straightforward. The great number of parameters involved requires both…

Astrophysics of Galaxies · Physics 2018-12-26 I. Fuentes-Carrera , M. Rosado , P. Amram , E. Laurikainen , H. Salo , J. A. Gomez-Lopez , H. O. Castaneda , A. Bernal , C. Balkowski

We study the kinematics and dynamics of the M51-type interacting galaxy pair KPG 302 (NGC 3893/96). We analyse the distribution of the dark matter (DM) halo of the main galaxy in order to explore possible differences between DM halos of…

MUSE observations of NGC5813 reveal a complex structure in the velocity dispersion map, previously hinted by SAURON observations. The structure is reminiscent of velocity dispersion maps of galaxies comprising two counter-rotating discs,…

We present three-integral dynamical models for the three Local Group dwarf elliptical galaxies: NGC147, NGC185, and NGC205. It is the first time models are constructed for the Local Group dEs that allow for the presence of dark matter at…

Astrophysics · Physics 2009-11-11 S. De Rijcke , P. Prugniel , F. Simien , H. Dejonghe

We report on the discovery of a rapidly co-rotating stellar and gas component in the nucleus of the shell elliptical NGC2865. The stellar component extends ~ 0.51/h100 kpc along the major axis, and shows depressed velocity dispersion and…

Astrophysics · Physics 2009-10-31 G. K. T. Hau , D. Carter , M. Balcells

Here we present HST WFPC2 imaging of 14 kinematically--distinct core ellipticals to examine their globular cluster systems. In particular, we probe the galaxy central regions, for which we might expect to see the strongest signatures of…

Astrophysics · Physics 2009-10-28 Duncan A. Forbes , Marijn Franx , Garth D. Illingworth , C. M. Carollo

The growing amount of integral-field spectroscopic data creates an increased demand for understanding kinematic peculiarities that carry valuable information about the evolution of the host galaxies. For kinematically distinct cores (KDCs),…

Astrophysics of Galaxies · Physics 2021-03-17 Ivana Ebrová , Ewa L. Łokas , Jiří Eliášek

This paper is the first in a series in which we present the results of an ESO Large Program on the kinematics and internal dynamics of dwarf elliptical galaxies (dEs). We investigate the relations between the parameters that quantify the…

Astrophysics · Physics 2009-11-10 S. De Rijcke , D. Michielsen , H. Dejonghe , W. W. Zeilinger , G. K. T. Hau