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The spatially resolved dynamics of dusty starburst galaxies in a z ∼ 0.4 cluster: beginning the transition from spirals to S0s
Smail, Ian; Swinbank, A. M.; Bower, R. G. +4 more
To investigate what drives the reversal of the morphology-density relation at intermediate/high redshift, we present a multiwavelength analysis of 27 dusty starburst galaxies in the massive cluster Cl 0024+17 at z = 0.4. We combine Hα dynamical maps from the VLT/FLAMES multi-IFU system with far-infrared imaging using Herschel/SPIRE and millimetre …
Examining the angular resolution of the ASTRO-H's soft x-ray telescopes
Maeda, Yoshitomo; Ishida, Manabu; Okajima, Takashi +12 more
The international x-ray observatory ASTRO-H was renamed "Hitomi" after launch. It covers a wide energy range from a few hundred eV to 600 keV. It is equipped with two soft x-ray telescopes (SXTs: SXT-I and SXT-S) for imaging the soft x-ray sky up to ∼12 keV, which focus an image onto the respective focal-plane detectors: CCD camera (SXI) and a cal…
Intensity Conserving Spectral Fitting
Klimchuk, J. A.; Patsourakos, S.; Tripathi, D.
The detailed shapes of spectral-line profiles provide valuable information about the emitting plasma, especially when the plasma contains an unresolved mixture of velocities, temperatures, and densities. As a result of finite spectral resolution, the intensity measured by a spectrometer is the average intensity across a wavelength bin of non-zero …
CRDS with a VECSEL for broad-band high sensitivity spectroscopy in the 2.3 µm window
Campargue, A.; Vasilchenko, S.; Mondelain, D. +9 more
The integration of an industry ready packaged Sb-based Vertical-External-Cavity Surface-Emitting-Laser (VECSEL) into a Cavity Ring Down Spectrometer (CRDS) is presented. The instrument operates in the important 2.3 µm atmospheric transparency window and provides a high sensitivity (minimum detectable absorption of 9 × 10-11 cm
Spontaneous emission of electromagnetic and electrostatic fluctuations in magnetized plasmas: Quasi-parallel modes
Kim, Sunjung; Yoon, Peter H.; Choe, G. S.
The present paper is devoted to the theoretical and numerical analysis of the spontaneously emitted electromagnetic fluctuations characterized by quasi-parallel wave vectors relative to the ambient magnetic field. The formulation is based upon the Klimontovich plasma kinetic theory. The comparative study is carried out between the spontaneously em…
Gaia transient detection efficiency: hunting for nuclear transients
Harrison, D. L.; Walton, N. A.; Wyrzykowski, Ł. +5 more
We present a study of the detectability of transient events associated with galaxies for the Gaia European Space Agency astrometric mission. We simulated the on-board detections, and on-ground processing for a mock galaxy catalogue to establish the properties required for the discovery of transient events by Gaia, specifically tidal disruption eve…
Spatial distribution of jovian clouds, hazes and colors from Cassini ISS multi-spectral images
Hueso, R.; Sánchez-Lavega, A.; Pérez-Hoyos, S. +1 more
The Cassini spacecraft made a gravity assist flyby of Jupiter in December 2000. The Imaging Science Subsystem (ISS) acquired images of the planet that covered the visual range with filters sensitive to the distribution of clouds and hazes, their altitudes and color. We use a selection of these images to build high-resolution cylindrical maps of th…
Reconstruction of small-scale galaxy cluster substructure with lensing flexion
Bradač, Maruša; Cain, Benjamin; Levinson, Rebecca
We present reconstructions of galaxy-cluster-scale mass distributions from simulated gravitational lensing data sets including strong lensing, weak lensing shear, and measurements of quadratic image distortions - flexion. The lensing data is constructed to make a direct comparison between mass reconstructions with and without flexion. We show that…
Solar cycle variations in ion composition in the dayside ionosphere of Titan
Wahlund, J. -E.; Edberg, N. J. T.; Waite, J. H. +4 more
One Titanian year spans over two complete solar cycles, and the solar irradiance has a significant effect on ionospheric densities. Solar cycle 24 has been one of the quietest cycles on record. In this paper we show data from the Cassini ion and neutral mass spectrometer (INMS) and the radio and plasma wave science Langmuir probe spanning the time…
The Cold Dust Content of the Oxygen-rich Supernova Remnant G292.0+1.8
Ghavamian, Parviz; Williams, Brian J.
We present far-infrared images of the Galactic oxygen-rich supernova remnant (SNR) G292.0+1.8, acquired with the PACS and SPIRE instruments of the Herschel Space Observatory. We find that the SNR shell is detected in the PACS blue (100 µm) band, but not in the red (160 µm) band, broadly consistent with results from AKARI observations. …