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Scattering characteristics and imaging of energetic neutral atoms from the Moon in the terrestrial magnetosheath
Barabash, Stas; Futaana, Yoshifumi; Wieser, Martin +6 more
We study hydrogen energetic neutral atom (ENA) emissions from the lunar surface, when the Moon is inside the terrestrial magnetosheath. The ENAs are generated by neutralization and backscattering of incident protons of solar wind origin. First, we model the effect of the increased ion temperature in the magnetosheath (>10 times larger than that…
Foreground Bias from Parametric Models of Far-IR Dust Emission
Kogut, A.; Fixsen, D. J.
We use simple toy models of far-IR dust emission to estimate the accuracy to which the polarization of the cosmic microwave background can be recovered using multi-frequency fits, if the parametric form chosen for the fitted dust model differs from the actual dust emission. Commonly used approximations to the far-IR dust spectrum yield CMB residua…
The Hinode/XRT Full-Sun Image Corrections and the Improved Synoptic Composite Image Archive
Yoshimura, Keiji; Saar, Steven H.; Takeda, Aki
The XRT Synoptic Composite Image Archive (SCIA) is a storage and gallery of X-ray full-Sun images obtained through the synoptic program of the X-Ray Telescope (XRT) onboard the Hinode satellite. The archived images provide a quick history of solar activity through the daily and monthly layout pages and long-term data for morphological and quantita…
Dissecting a supernova impostor's circumstellar medium: MUSEing about the SHAPE of η Carinae's outer ejecta
Davidson, K.; Humphreys, R. M.; Mehner, A. +10 more
Aims: The role of episodic mass loss is one of the outstanding questions in massive star evolution. The structural inhomogeneities and kinematics of their nebulae are tracers of their mass-loss history. We conduct a three-dimensional morpho-kinematic analysis of the ejecta of η Car outside its famous Homunculus nebula.
Methods: We carrie…
A Multi-wavelength 3D Model of BD+30°3639
Freeman, M. J.; Kastner, Joel H.
We present a 3D multi-wavelength reconstruction of BD+30°3639, one of the best-studied planetary nebulae in the solar neighborhood. BD+30°3639, which hosts a [WR]-type central star, has been imaged at wavelength regimes that span the electromagnetic spectrum, from radio to X-rays. We have used the astrophysical modeling software SHAPE to construct…
After the Interaction: an Efficiently Star-forming Molecular Disk in NGC 5195
Aalto, Susanne; Nyland, Kristina; Gallagher, John S. +4 more
We present new molecular gas maps of NGC 5195 (alternatively known as M51b) from the Combined Array for Research in Millimeter Astronomy, including 12CO(1-0), 13CO(1-0), CN(1{}{0,2}-{0}{0,1}), CS(2-1), and 3 mm continuum. We also detected HCN(1-0) and HCO+(1-0) using the Onsala Space Observato…
Mass wasting on Phobos triggered by an evolving tidal environment
Shi, X.; Oberst, J.; Willner, K.
The Martian moon Phobos is experiencing orbital decay, increasing tidal forces, and possible disruption in the near future. We suggest that this changing dynamic tidal environment has contributed to resurfacing of the odd-shaped small moon. We investigated mass wasting features in craters using high-resolution images acquired by the Mars Express o…
Detailed photometric analysis of young star groups in the galaxy NGC 300
Baume, G.; Rodríguez, M. J.; Feinstein, C.
Aims: The purpose of this work is to understand the global characteristics of the stellar populations in NGC 300. In particular, we focused our attention on searching young star groups and study their hierarchical organization. The proximity and orientation of this Sculptor Group galaxy make it an ideal candidate for this study.
Methods:…
The environment of the γ-ray emitting SNR G338.3-0.0: a hadronic interpretation for HESS J1640-465
Castelletti, G.; Supan, L.; Supanitsky, A. D.
The supernova remnant (SNR) G338.3-0.0 spatially correlates with HESS J1640-465, which is considered the most luminous γ-ray source associated with a SNR in our Galaxy. The X-ray pulsar PSR J1640-4631 has been recently discovered within the SNR shell, which could favor a leptonic origin for the detected very-high-energy (VHE) emission. In spite of…
Far-infrared photometric observations of the outer planets and satellites with Herschel-PACS
Feuchtgruber, H.; Balog, Z.; Müller, T. G. +5 more
We present all Herschel-PACS photometer observations of