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Computing uncertainties in ionosphere-airglow models: II. The Martian airglow
Simon Wedlund, Cyril; Witasse, Olivier; Gronoff, Guillaume +3 more
One of the objectives of spectrometers onboard space missions is to retrieve atmospheric parameters (notably density, composition and temperature). To fulfill this objective, comparisons between observations and model results are necessary. Knowledge of these model uncertainties is therefore necessary, although usually not considered, to estimate …
Multiwavelength campaign on Mrk 509. X. Lower limit on the distance of the absorber from HST COS and STIS spectroscopy
Kaastra, J. S.; Kriss, G. A.; Arav, N. +15 more
Aims: Active galactic nuclei (AGN) often show evidence of photoionized outflows. A major uncertainty in models for these outflows is the distance (R) to the gas from the central black hole. In this paper we use the HST/COS data from a massive multi-wavelength monitoring campaign on the bright Seyfert I galaxy Mrk 509, in combination with arch…
A Multi-wavelength Investigation of RCW175: An H II Region Harboring Spinning Dust Emission
Alves, M. I. R.; Davies, R. D.; Davis, R. J. +13 more
Using infrared, radio continuum, and spectral observations, we performed a detailed investigation of the H II region RCW175. We determined that RCW175, which actually consists of two separate H II regions, G29.1-0.7 and G29.0-0.6, is located at a distance of 3.2 ± 0.2 kpc. Based on the observations we infer that the more compact G29.0-0.6 is less …
Data-Oriented Diagnostics of Pileup Effects on the Suzaku XIS
Dotani, Tadayasu; Katsuda, Satoru; Enoto, Teruaki +11 more
We present the results of a systematic study of pileup phenomena seen in the X-ray Imaging Spectrometer, an X-ray CCD instrument, onboard the Suzaku observatory. Using a data set of observed sources in a wide range of brightness and spectral hardness, we characterized the pileup fraction, spectral hardening, and grade migration as a function of th…
A Broadband Study of the Emission from the Composite Supernova Remnant MSH 11-62
Gelfand, Joseph D.; Temim, Tea; Hughes, John P. +10 more
MSH 11-62 (G291.0-0.1) is a composite supernova remnant for which radio and X-ray observations have identified the remnant shell as well as its central pulsar wind nebula. The observations suggest a relatively young system expanding into a low-density region. Here, we present a study of MSH 11-62 using observations with the Chandra, XMM -Newton, a…
Optical counterpart of HLX-1 during the 2010 outburst
Soria, Roberto; Kong, Albert K. H.; Gladstone, Jeanette C. +2 more
We studied the optical counterpart of the intermediate-mass black hole candidate HLX-1 in ESO 243-49. We used a set of Very Large Telescope imaging observations from 2010 November, integrated by Swift X-ray data from the same epoch. We measured standard Vega brightnesses U= 23.89 ± 0.18 mag, B= 25.19 ± 0.30 mag, V= 24.79 ± 0.34 mag and R= 24.71 ± …
Moderate-luminosity Growing Black Holes from 1.25 < z < 2.7: Varied Accretion in Disk-dominated Hosts
Urry, C. M.; Simmons, B. D.; Schawinski, K. +2 more
We compute black hole masses and bolometric luminosities for 57 active galactic nuclei (AGNs) in the redshift range 1.25 <= z <= 2.67, selected from the GOODS-South deep multi-wavelength survey field via their X-ray emission. We determine host galaxy morphological parameters by separating the galaxies from their central point sources in deep…
Observations of ICMEs and ICME-like Solar Wind Structures from 2007 - 2010 Using Near-Earth and STEREO Observations
Luhmann, J. G.; Russell, C. T.; Kilpua, E. K. J. +2 more
The generally low interplanetary magnetic field magnitude around the minimum between Solar Cycles 23 and 24 (SC 23/24 minimum) allows us to identify weak and small solar wind structures. We use observations from near-Earth and twin STEREO spacecraft to study solar wind conditions from January 2007 through December 2010. In addition to 84 clear int…
Geologic interpretation of the near-infrared images of the surface taken by the Venus Monitoring Camera, Venus Express
Scholten, F.; Roatsch, Th.; Fiethe, B. +9 more
We analyze night-time near-infrared (NIR) thermal emission images of the Venus surface obtained with the 1-µm channel of the Venus Monitoring Camera onboard Venus Express. Comparison with the results of the Magellan radar survey and the model NIR images of the Beta-Phoebe region show that the night-time VMC images provide reliable informatio…
Warm H2O and OH in the disk around the Herbig star HD 163296
Fedele, D.; Henning, Th.; van Dishoeck, E. F. +5 more
We present observations of far-infrared (50-200 µm) OH and H2O emission of the disk around the Herbig Ae star HD 163296 obtained with Herschel/PACS in the context of the DIGIT key program. In addition to strong [O i] emission, a number of OH doublets and a few weak highly excited lines of H2O are detected. The presence …