The VLT-FLAMES Tarantula Survey offers a unique opportunity to study the stellar and gas kinematics of 30 Doradus in the Large Magellanic Cloud (LMC). Using the nebular emission lines in the fibre spectra of �1000 stars, we can map the radial velocity structure of ionized gas across the 30 Doradus region, enabling us to study the ...

We present integral field spectroscopic observations of the central region of the active galaxy NGC 4258 obtained with the fibre IFU system INTEGRAL. We have been able to detect cold neutral gas by means of the interstellar NaD doublet absorption and to trace its distribution and kinematics with respect to the underlying disc. The neutral ...

The RESOLVE (REsolved Spectroscopy Of a Local VolumE) Survey will quantify the stellar, gas, and total dynamical mass of every galaxy with baryonic mass >109 Msun within a well-defined volume of the local universe. The survey's all-inclusive nature presents substantial challenges for dynamical mass measurement, best addressed by 2D velocity field ...

We observe the extended gas emission from the central regions of AGNs host galaxies using the Eucalyptus IFU detector at the 1.6m telescope of the Pico dos Dias Observatory (Brazil). In this work, we describe the data reduction procedures as well as the preliminary results obtained for the galaxies NGC 7582, NGC 7130 and IC5063. These galaxies were ...

Ground-based telescopes can achieve diffraction-limited images when equipped with adaptive optics (AO). A major limitation of AO is the small field of view, which is due to the limited isoplanatic patch size. Nevertheless, conventional long-slit spectrographs cannot sample the entire AO-corrected field of view in a single exposure. However, equipped with a modern, large detector array, the ...

We present two-dimensional (2D) stellar and gaseous kinematics of the inner ~130x180 pc^2 of the Narrow Line Seyfert 1 galaxy NGC4051 at a sampling of 4.5 pc, from near-infrared K-band spectroscopic observations obtained with the Gemini's Near-infrared Integral Field Spectrograph (NIFS). The turnover of the stellar rotation curve at only ~55 pc from the nucleus, revealing a highly concentrated ...

We present a harmonic expansion of the observed line-of-sight velocity field as a method to recover and investigate spiral structures in the nuclear regions of galaxies. We apply it to the emission-line velocity field within the circumnuclear star-forming ring of NGC 1097, obtained with the GMOS-IFU spectrograph. The radial variation ...

The well-known quasar 3C 48 is the most powerful compact steep-spectrum radio-loud QSO at low redshifts. It also has two unusual optical features within the radius of the radio jet (~1"): (1) an anomalous, high-velocity narrow-line component, and (2) a bright continuum peak (3C 48A) ~1" northeast of the quasar. Both of these optical features have been conjectured to be related ...

First System of Deployable Multi-Integral Field Units Ready Summary The ESO Very Large Telescope (VLT) at the Paranal Observatory is being equipped with many state-of-the-art astronomical instruments that will allow observations in a large number of different modes and wavebands. Soon to come is the Fibre Large Array Multi-Element Spectrograph (FLAMES) , a project co-ordinated by ESO. It ...

The purpose of this study was to estimate the frequency and distribution of high-velocity gas in the

Multi-Integral Field Spectroscopy is now available on 8-meter class telescopes. With GIRAFFE on the VLT, we have recently shown that velocity fields of distant galaxies at intermediate redshifts (z < 1) can be derived with a spatial resolution of ~ 0.4 arsec. To reach such an accuracy, we have written a dedicated software which combines IFU reduced 3D ...

We present Integral Field Unit GMOS-IFU data of the compact H II galaxy UM 408, obtained at the Gemini South telescope, in order to derive the spatial distribution of emission lines and line ratios, kinematics, plasma parameters, and oxygen abundances as well the integrated properties over an area of 3''x4.''4 equivalent with {approx}750 pc ...

In this paper we present the three-dimensional dynamics of the galaxy SDSS J101345.39+011613.66, selected for its unusually strong Balmer absorption lines [W0(H?)=7.5 �]. Using the Gemini Multi-Object Spectrograph-South integral field unit (IFU) in nod+shuffle mode, we have mapped the continuum and optical absorption lines of this z=0.1055 field galaxy. This galaxy has a ...

In this second paper of the series, we present the results from optical Gemini-North GMOS-IFU and WIYN DensePak IFU spectroscopic observations of the starburst and inner wind zones of M82, with a focus on the state of the T ~ 104 K ionized interstellar medium. Our electron density maps show peaks of a few 1000 cm-3 (implying very high thermal pressures), ...

We present Integral Field Unit (IFU) observations of a sample of 14 early-type galaxies (ETGs) in the Coma Cluster with Oxford's Short Wavelength Integral Field specTrograph (SWIFT) on the 200" Hale Telescope at Palomar. SWIFT is an i- and z-band IFU with R 2 � (? 35kms-1). Our sample was selected to evenly sample the full range in ...

High-resolution H? velocity fields provide important observational constraints on the dark matter distribution in dwarf and low surface brightness galaxies. These two-dimensional data show that dark matter-dominated galaxies tend to be more consistent with cored halos than cuspy halos, at odds with theoretical expectations. Using N-body/SPH simulations of disk galaxy formation ...

We present two-dimensional spectroscopy covering the rest-frame wavelengths of strong optical emission lines in six luminous submillimetre galaxies (SMGs) at z = 1.3-2.5. Using this near-infrared integral field spectroscopy together with Hubble Space Telescope ACS and NICMOS imaging, we map the dynamics and morphologies of these systems on scales from 4-11 kpc. Four of the systems show multiple ...

The evaporation velocity of liquid droplets under various conditions is theoretically calculated and

... Accession Number : AD0612140. Title : GAS VELOCITY PROBE FOR MOVING IONIZED GASES,. Corporate Author : ARMY ...

... Accession Number : ADD302545. Title : ACOUSTICAL MEASUREMENT OF GAS-FLOW VELOCITY. Corporate Author : ...

... developed to estimate terminal velocities imparted to ... internal energy in the explosive gas permits ... selection of initial displacement, velocity, and the ...

Gas diffuser, based on swirling flow, dissipates incoming gas velocity in relatively short distance.

... Title : On the Determination of the Gas Temperature From the Velocity of the ... equal to the relaxation time for changes in chemical composition. ...

We will observe a unique interacting galaxy pair where one of the galaxies is in a quasar phase. This system has the remarkable quality that the light from the quasar is photoionizing the otherwise unobservable gas in the merger making it visible through line emission. Additionally, the phase of the merger is constrained by the stellar populations and relative separation of ...

Context. Starbursts are one of the main contributors to the chemical enrichment of the interstellar medium. However, mechanisms governing the interaction between the recent star formation and the surrounding gas are not fully understood. Because of their a priori simplicity, the subgroup of H II galaxies constitute an ideal sample to study these mechanisms. Aims: A detailed ...

Ultraluminous/Luminous Infrared Galaxies (U/LIRGs) are an excellent laboratory for investigating galaxy formation and evolution. They are complex systems, running the gamut of galaxy nuclear types and covering a sequence of massive mergers from isolated starburst galaxies to completely coalesced mergers with post-starburst populations and strong AGN. The detailed relationship between star ...

We present mock DensePak Integral Field Unit (IFU) velocity fields, rotation curves and halo fits for disc galaxies formed in spherical and triaxial cuspy dark matter haloes and spherical cored dark matter haloes. The simulated galaxies are 'observed' under a variety of realistic conditions to determine how well the underlying dark matter halo can be ...

Using an optically-unbiased selection process based on the HIPASS neutral hydrogen survey, we have identified a sample of over 170 spatially isolated, gas-rich dwarf galaxies in the southern hemisphere with cz between 350 and 1500 km s-1, with R-band luminosities and HI masses less than the Small Magellanic Cloud, most of which lack spectroscopic data. This paper summarises ...

We present two-dimensional stellar and gaseous kinematics of the inner 119 � 255 pc2 of the LINER/Seyfert 1 galaxy M 81 on the basis of observations obtained with the Integral Field Unit of the Gemini Multi-Object Spectrograph (GMOS-IFU) on the Gemini North telescope at a spatial resolution of ~10 pc, over the wavelength range 5600-7000 �. Our goal is to map the ...

... 3.7 The gas velocities for the CNH detonators average 20% lower than the velocity observed for the BYA detonator. Experimental ...

The Alfven critical velocity mechanism for ionization of a neutral gas streaming across the magnetic

... small passages and high velocities are involved. ... Descriptors : *RADIAL FLOW, OPTIMIZATION, HIGH VELOCITY, GAS TURBINES ...

... Title : PREDICTION OF HIGH VELOCITY SOLID PROPELLANT GUN PERFORMANCE BY GAS DYNAMIC COMPUTER PROGRAM. ...

... The data were obtained at chamber pressures from ... which is required to calculate the gas velocity. ... A comparison of the velocities calculated by the ...

... Radial distributions of mean axial and radial velocity, axial and radial turbulence intensity, velocity cross correlation, gas composition, static ...

... Title : AN EQUATION FOR PHASE VELOCITIES IN A PARTIALLY IONIZED GAS,. Corporate Author : HARRY DIAMOND LABS WASHINGTON DC. ...

From relations between the velocities of sound, specific heats, and densities of gas mixtures of ideal gases and their compenents, a formula is developed for the velocity of sound propagation in gas mixtures of ideal gases. (D.L.C.)

The phase velocity of moving striations is calculated from the theory of Pekarek. It is shown that in the ambipolar diffusion regime this gives satisfactory agreement with the recent measurements on the variation of striation velocity as the gas pressure ...

... Mach 25 flows of argon gas for several different flow regimes, from the continuum to a rarefied gas. Several different velocity slip and temperature ...

... Velocity Measurements in the End-Gas Region During Homogeneous-Charge Combustion in ... of a reaction zone through the turbulent mixture in the ...

... TITLE: Tlie Measurement of the Rates of Burning at Zero Gas Velocity of Some German Propellants and of a British SU Propellant AUTHORS) ORIS ...

... Title : MEASUREMENT OF SOUND VELOCITY IN A SOLID ... a two-component (solid-gas) medium was ... SHOCK WAVES, FLOW FIELDS, COLLOIDS ...

... Title : EVALUATION OF HIGH-GAS-VELOCITY AND STATIC OXIDATION BEHAVIOR OF FUSED-SALT-ALUMINIDED IN 100 BETWEEN 1038 AND ...

We have designed and constructed an advanced image slicer (AIS) integral field unit (IFU). The IFU employs an all-mirror design and will be installed in the Penn State near-IR Imager and Spectrograph (PIRIS) for three-dimensional integral field spectroscopy at various astronomical telescopes. Using the AIS technique, the slicer IFU can ...

... of escape of the powder gas", donated by Ve ... force due to gas pressure on the muzzle ring, e,e. the force due to the pressure of escaping gas acting ...

Formation of massive stars is an area of active research. Like low mass stars, high mass stars go through a phase of accretion and outflow. High mass outflows are distinct from low mass outflows in that the former are poorly collimated and spread out into a butterfly pattern. The Orion outflow is composed of a large number of "bullet-shaped" shock waves. It is the nearest, best studied example of ...

A gas compressor based on the use of a driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary ...

Elastic velocities and hydraulic permeability of gas hydrate-bearing sediments strongly depend on how gas hydrate accumulates in pore spaces and various gas hydrate accumulation models are proposed to predict ...

Keller 2 and Claude Plymate 2 1 New Jersey Institute of Technology 2 National Solar Observatory Ground-of-the-art advanced slicer IFU for the National Solar Observatory (NSO) McMath-Pierce 1.5m Solar Telescope (McMP). The advanced slicer IFU technique, which deploys only mirrors to maximize the instrument efficiency

We present optical integral field unit (IFU) observations (VLT/VIMOS-IFU and WIYN/SparsePak), and associated archival deep H? imaging (MPG/ESO 2.2 m WFI), of the nearby starburst galaxy NGC 253. With VIMOS we observed the nuclear region and southern superwind outflow in detail with five pointings, and with the WIYN/SparsePak IFU we ...

High Exhaust Velocity", the Gas Dynamics Labora- ... heat up almost immediately, to a very high temperature, and convert ...

This site provides an interactive Java applet that helps visualize the movement of atoms in an ideal gas and the approach to a Boltzmann distribution of velocities.