Results 31 to 40 of about 3,791 (238)

Dwarf spheroidal galaxy kinematics and spiral galaxy scaling laws [PDF]

Monthly Notices of the Royal Astronomical Society, 2011
Los estudios cinemáticos de los satélites esferoidales enanos (dSph) de la Vía Láctea están revelando indicios tentadores sobre la estructura de los halos de materia oscura (DM) en el extremo de baja masa de la función de luminosidad de la galaxia. En el extremo brillante, el modelado de galaxias espirales ha demostrado que sus curvas de rotación son ...
Paolo Salucci, M. I. Wilkinson, Matthew G. Walker, G. Gilmore, Eva K. Grebel, Andreas Koch, Christiane Frigerio Martins, Rosemary F. Ġ. Wyse   +7 more
openaire   +3 more sources

Early-type disk galaxies: Structure and kinematics [PDF]

Astronomy Reports, 2008
Spectroscopic observations of three lenticular (S0) galaxies (NGC 1167, NGC 4150, and NGC 6340) and one SBa galaxy (NGC 2273) have been taken with the 6-m telescope of the Special AstrophysicalObservatory of the Russian Academy of Sciences aimed to study the structure and kinematic properties of early-type disk galaxies.
Zasov, A. V., Moiseev, A. V., Khoperskov, A. V., Sidorova, E. A.   +3 more
openaire   +2 more sources

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

KINEMATIC EVOLUTION OF SIMULATED STAR-FORMING GALAXIES [PDF]

The Astrophysical Journal, 2014
Recent observations have shown that star-forming galaxies like our own Milky Way evolve kinematically into ordered thin disks over the last ~8 billion years since z=1.2, undergoing a process of "disk settling." For the first time, we study the kinematic evolution of a suite of four state of the art "zoom in" hydrodynamic simulations of galaxy formation
Susan A. Kassin, Alyson Brooks, Fabio Governato, Benjamin J. Weiner, Jonathan P. Gardner   +4 more
openaire   +2 more sources

50% body weight loading reduces stature increases and lumbar disc expansion from 4 h hyper‐buoyancy floatation versus 15 min sitting upright

Experimental Physiology, EarlyView.
Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo, Christina Lysandrou, Laura Sudres, Alfonso Gil‐Martinez, Jaap Swanenburg, James Edward Clark, David Andrew Green   +6 more
wiley   +1 more source

H i 21 cm Extended Structures to the Northeast and Southwest of NGC 5595: VLA Observations of the Disk Galaxy Pair NGC 5595 and NGC 5597

The Astronomical Journal, 2023
We report VLA B-configuration observations of the H i 21 cm line on the close disk galaxy pair NGC 5595 and NGC 5597. At the angular resolution of the observations, ∼7.″1 × 4.″2, while most of the H i 21 cm in NGC 5595 and NGC 5597 has the same extent as
J. Antonio Garcia-Barreto, Emmanuel Momjian   +1 more
doaj   +1 more source

Internal kinematics of isolated modelled disc galaxies [PDF]

Astronomy & Astrophysics, 2006
We present a systematic investigation of rotation curves (RCs) of fully hydrodynamically simulated galaxies, including cooling, star formation with associated feedback and galactic winds. Applying two commonly used fitting formulae to characterize the RCs, we investigate systematic effects on the shape of RCs both by observational constraints and ...
Kapferer, W., Kronberger, T., Schindler, Stefanie, Bohm, A., Ziegler, Bodo L.   +4 more
openaire   +3 more sources

Non‐Negligible Influence of Forcing Mechanisms on Turbulent Mixing at Low Reynolds Numbers: A One‐Dimensional Turbulence Study

PAMM, Volume 26, Issue 1, March 2026.
ABSTRACT This study presents a numerical investigation of passive scalar mixing in homogeneous isotropic turbulence (HIT). Different volumetric forcing schemes have been used in the literature, but the side effects are rarely discussed, either because these are assumed irrelevant or because it is too costly to conduct such an analysis with a high ...
Abhishek Joshi, Marten Klein, Heiko Schmidt   +2 more
wiley   +1 more source

The Large-scale Structure Supplies the Formation of Gas-star Misaligned Galaxies

The Astrophysical Journal Letters
Using the integral field unit data from the Mapping Nearby Galaxies at Apache Point Observatory survey, we build a sample of gas-star misaligned galaxies. The large-scale environment of misaligned galaxies is dominated by filaments and clusters, while it
Min Bao, Yanmei Chen, Qiusheng Gu, Huiyuan Wang, Yong Shi, Peng Wang   +5 more
doaj   +1 more source

Kinematics of a high-redshift galaxy: A case study [PDF]

Serbian Astronomical Journal, 2000
A kinematics of a z = 2.81 galaxy toward bright QSO 0528-250, as inferred from the absorption spectroscopy is discussed. There are sufficient arguments for a far-reaching conclusion that we are observing an older, uninvolved version of the local Galactic
Ćirković M.M.
doaj   +1 more source