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The abundance, vertical distribution and origin of H2O in Titan’s atmosphere: Herschel observations and photochemical modelling
Hartogh, Paul; Lellouch, Emmanuel; Lara, Luisa M. +4 more
Disk-averaged observations of water vapor in Titan’s atmosphere acquired with the Herschel satellite are reported. We use a combination of unresolved measurements of three H2O rotational lines at 66.4, 75.4 and 108.0 µm with the PACS instrument, and spectrally-resolved observations of two other transitions at 557 GHz (538 µm…
Evolution and Hydrodynamics of the Very Broad X-Ray Line Emission in SN 1987A
Haberl, F.; Sturm, R.; Dwarkadas, V. V. +2 more
Observations of SN 1987A by the Chandra High Energy Transmission Grating (HETG) in 1999 and the XMM-Newton Reflection Grating Spectrometer (RGS) in 2003 show very broad (v-b) lines with a full width at half-maximum (FWHM) of order 104 km s-1 at these times the blast wave (BW) was primarily interacting with the H II region aro…
Physical properties of OSIRIS-REx target asteroid (101955) 1999 RQ36. Derived from Herschel, VLT/ VISIR, and Spitzer observations
Altieri, B.; Küppers, M.; Pál, A. +6 more
In September 2011, the Herschel Space Observatory performed an observation campaign with the PACS photometer observing the asteroid
The A2667 Giant Arc at z = 1.03: Evidence for Large-Scale Shocks at High Redshift
Swinbank, A. M.; Richard, J.; Yuan, T. -T. +1 more
We present the spatially resolved emission line ratio properties of a ~1010 M ⊙ star-forming galaxy at redshift z = 1.03. This galaxy is gravitationally lensed as a triple-image giant arc behind the massive lensing cluster A2667. The main image of the galaxy has magnification factors of 14 ± 2.1 in flux and ~2 × 7 in area, yi…
CANDELS: Correlations of Spectral Energy Distributions and Morphologies with Star formation Status for Massive Galaxies at z ~ 2
Ferguson, Henry C.; Hathi, Nimish P.; Lucas, Ray A. +17 more
We present a study on spectral energy distributions, morphologies, and star formation for an IRAC-selected extremely red object sample in the GOODS Chandra Deep Field-South. This work was enabled by new HST/WFC3 near-IR imaging from the CANDELS survey as well as the deepest available X-ray data from Chandra 4 Ms observations. This sample consists …
Molecular Environments of 51 Planck Cold Clumps in the Orion Complex
Liu, Tie; Wu, Yuefang; Zhang, Huawei
A mapping survey of 51 Planck cold clumps projected on the Orion complex was performed with J = 1-0 lines of 12CO and 13CO with the 13.7 m telescope at the Purple Mountain Observatory. The mean column densities of the Planck gas clumps range from 0.5 to 9.5 × 1021 cm-2, with an average value of (2.9 ± 1.…
Asymmetry in the current sheet and secondary magnetic flux ropes during guide field magnetic reconnection
Fujimoto, M.; Zhang, Tielong; Khotyaintsev, Yuri V. +15 more
A magnetic reconnection event with a moderate guide field encountered by Cluster in the near-Earth tail on 28 August 2002 is reported. The guide field points dawnward during this event. The quadrupolar structure of the Hall magnetic field within the ion diffusion region is distorted toward the northern hemisphere in the earthward part while toward…
PacMan returns: An electron-generated thermal anomaly on Tethys
Spencer, J. R.; Howett, C. J. A.; Segura, M. +2 more
New Cassini observations show that Saturn’s moon Tethys, like Mimas, has a region of anomalously high thermal inertia at low latitudes centered on its leading hemisphere. Derivation of the thermophysical properties of the surface across three representative regions indicate that the bolometric Bond albedo across Tethys’ leading hemisphere remains …
High-resolution X-Ray Spectroscopy of the Galactic Supernova Remnant Puppis A with XMM-Newton/RGS
Katsuda, Satoru; Petre, Robert; Uchida, Hiroyuki +6 more
We present high-resolution X-ray spectra of cloud-shock interaction regions in the eastern and northern rims of the Galactic supernova remnant Puppis A, using the Reflection Grating Spectrometer on board the XMM-Newton satellite. A number of emission lines including Kα triplets of He-like N, O, and Ne are clearly resolved for the first time. Inten…
Buildup and Release of Magnetic Twist during the X3.4 Solar Flare of 2006 December 13
Choe, G. S.; Shiota, D.; Inoue, S. +3 more
We analyze the temporal evolution of the three-dimensional magnetic structure of the flaring active region (AR) NOAA 10930 by using the nonlinear force-free fields extrapolated from the photospheric vector magnetic fields observed by the Solar Optical Telescope on board Hinode. This AR consisted mainly of two types of twisted magnetic field lines:…