Results 21 to 30 of about 282 (160)

Temporal Dynamics With and Without a Nervous System: Plant Physiology, Communication, and Movement. [PDF]

Cogn Sci
Abstract The concept of time has long been the subject of complex philosophical reflections and scientific research, which have interpreted it differently based on the starting question, context, and level of analysis of the system under investigation.
Bianchi M, Guerra S, Bonato B, Avesani S, Ravazzolo L, Simonetti V, Dadda M, Castiello U.   +7 more
europepmc   +2 more sources

Kinematics and dynamics of the M 51-type galaxy pair NGC 3893/96 (KPG 302) [PDF]

Astronomy & Astrophysics, 2007
Accepted for publication in A&A.
I. Fuentes-Carrera, M. Rosado, P. Amram, H. Salo, E. Laurikainen   +4 more
openalex   +4 more sources

The dynamics of the dE galaxy FS76 : bridging the kinematic dichotomy between Es and dEs [PDF]

, 2001
We present major and minor axis kinematics out to 2 half-light radii for the bright (M_B=-16.7) dwarf elliptical FS76, a member of the NGC5044 group. Its velocity dispersion is 46 \pm 2 km/s in the center and rises to 70 \pm 10 km/s at half-light radius. Beyond 1R_e the dispersion starts to fall again.
S. De Rijcke, H. Dejonghe, W. W. Zeilinger, G. K. T. Hau   +3 more
  +5 more sources

Kinematical and Dynamical Modeling of Elliptical Galaxies [PDF]

EAS Publications Series, 2006
Elements of kinematical and dynamical modeling of elliptical galaxies (Es) are presented. In projection, NFW models resemble Sersic models, but with a very narrow range of shapes (m=3+/-1). The total density profile of Es cannot be NFW-like because the predicted local M/L and aperture velocity dispersion within an effective radius (Re) are much lower ...
Mamon, G. A., Lokas, E., Dekel, A., Stoehr, F., Cox, T. J.   +4 more
openaire   +2 more sources

Kinematics of simulated galaxies – I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
State-of-the-art integral field surveys like $\mathrm{ATLAS^{3D}}$, SLUGGS, CALIFA, SAMI, and MaNGA provide large data sets of kinematical observations of early-type galaxies (ETGs), yielding constraints on the formation of ETGs. Using the cosmological hydrodynamical \textit{Magneticum Pathfinder} simulations, we investigate the paradigm of fast and ...
Schulze, Felix, Remus, Rhea-Silvia, Dolag, Klaus, Burkert, Andreas, Emsellem, Eric, van de Ven, Glenn   +5 more
openaire   +6 more sources

Unveiling the Kinematics and Dynamics of Ionized Gas in the Nearby Irregular Galaxy NGC 4449 [PDF]

The Astronomical Journal, 2002
AJ accepted, December issue, 33 pages, 13 ...
Margarita Valdez-Gutiérrez, Margarita Rosado, Ivânio Puerari, Leonid Georgiev, Jordanka Borissova, Patricia Ambrocio-Cruz   +5 more
openalex   +3 more sources

Structure and dynamics of galaxies with a low surface-brightness disc - I. The stellar and ionized-gas kinematics [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
(abridged) Photometry and long-slit spectroscopy are presented for a sample of 6 galaxies with a low surface brightness stellar disc and a bulge. The stellar and ionised-gas kinematics were measured along the major and minor axis in half of the sample galaxies, whereas the other half was observed only along two diagonal axes. Spectra along two diagonal
A. Pizzella, E. M. Corsini, M. Sarzi, John Magorrian, J. Méndez‐Abreu, L. Coccato, L. Morelli, F. Bertola   +7 more
openalex   +5 more sources

High-redshift quasars and their host galaxies – I. Kinematical and dynamical properties and their tracers [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACT Observations of high-redshift quasars provide information on the massive black holes (MBHs) powering them and the galaxies hosting them. Current observations of z ≳ 6 hosts, at sub-millimetre wavelengths, trace the properties of cold gas, and these are used to compare with the correlations between MBHs and galaxies ...
Lupi, Alessandro, Volonteri, Marta, Decarli, Roberto, Bovino, Stefano, Silk, Joseph, Bergeron, Jacqueline   +5 more
openaire   +3 more sources

Accelerating galaxy dynamical modeling using a neural network for joint lensing and kinematic analyses

Astronomy & Astrophysics, 2023
Strong gravitational lensing is a powerful tool to provide constraints on galaxy mass distributions and cosmological parameters, such as the Hubble constant, H0. Nevertheless, inference of such parameters from images of lensing systems is not trivial as parameter degeneracies can limit the precision in the measured lens mass and cosmological results ...
Gomer, Matthew, Ertl, S., Biggio, L., Wang, H., Galan, A., Van de Vyvere, Lyne, Sluse, Dominique, Vernardos, G., Suyu, S. H.   +8 more
openaire   +5 more sources

MaNGA DynPop – IV. Stacked total density profile of galaxy groups and clusters from combining dynamical models of integral-field stellar kinematics and galaxy–galaxy lensing

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We present the measurement of total and stellar/dark matter decomposed mass density profile around a sample of galaxy groups and clusters with dynamical masses derived from integral-field stellar kinematics from the MaNGA survey in Paper I and weak lensing derived from the DECaLS imaging survey.
Chunxiang Wang, Ran Li, Kai Zhu, Huanyuan Shan, Weiwei Xu, Michele Cappellari, Liang Gao, Nan Li, Shengdong Lu, Shude Mao, Ji Yao, Yushan Xie   +11 more
openaire   +2 more sources