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Galactic coordinate system based on multi-wavelength catalogs
Zhu, Zi; Liu, Jia-Cheng; Ding, Ping-Jie
The currently used Galactic coordinate system (GalCS) is based on the FK5 system at J2000.0, which was transformed from the FK4 system at B1950.0. The limitations and misunderstandings related to this transformed GalCS can be avoided by defining a new GalCS that is directly connected to the International Celestial Reference System (ICRS). With mor…
A study of iron and dust in the supernova remnant IC 443
Onaka, Takashi; Lee, Ho-Gyu; Kaneda, Hidehiro +3 more
We performed near-infrared line mapping of the supernova remnant IC 443 with the IRSF 1.4-m telescope, using the narrow-band filters tuned for [Fe II] 1.257 µm, [Fe II] 1.644 µm, and Paβ. We detected the [Fe II] and Paβ emissions from a very wide area of the observed region (30‧ ×35‧). These line intensity maps re…
Improved SOT (Hinode mission) high resolution solar imaging observations
Koutchmy, S.; Adjabshirizadeh, A.; Goodarzi, H.
We consider the best today available observations of the Sun free of turbulent Earth atmospheric effects, taken with the Solar Optical Telescope (SOT) onboard the Hinode spacecraft. Both the instrumental smearing and the observed stray light are analyzed in order to improve the resolution. The Point Spread Function (PSF) corresponding to the blue …
The morphology of the Anomalous Microwave Emission in the Planck 2015 data release
Liu, Hao; von Hausegger, Sebastian
We calculate weighted mosaic correlations between the recently published Planck 2015 foreground maps- both anomalous microwave emission (AME) maps, free-free emission, synchrotron radiation and thermal dust emission. The weighting coefficients are constructed taking account of the signal-to-error ratio given by the data product. Positive correlati…
A coronal wave and an asymmetric eruptive filament in SUMER, CDS, EIT, and TRACE co-observations
Doyle, J. G.; Madjarska, M. S.; Shetye, J.
Context. The investigation covers the complex subject of coronal waves and the phenomena contributing to and/or causing their formation.
Aims: The objectives of the present study is to provide a better physical understanding of the complex inter-relation and evolution of several solar coronal features comprising a double-peak flare, a coronal…
Erratum: “The Herschel Inventory of the Agents of Galaxy Evolution (Heritage) in the Magellanic Clouds, a Herschel Open Time Key Program” (2013, AJ, 146, 62)
Poglitsch, A.; van Loon, J. Th.; Bernard, J. -P. +52 more
Solar extreme ultraviolet variability of the quiet Sun
Solanki, S. K.; Teriaca, L.; Shakeri, F.
The last solar minimum has been unusually quiet compared to the previous minima (since space-based radiometric measurements are available). The Sun's magnetic flux was substantially lower during this minimum. Some studies also show that the total solar irradiance during the minimum after cycle 23 may have dropped below the values known from the tw…
XMM-Newton RGS observations of the Cat's Eye Nebula
Gruendl, R. A.; Chu, Y. -H.; Guerrero, M. A. +1 more
We present an analysis of XMM-Newton Reflection Grating Spectrometer (RGS) observations of the planetary nebula (PN) NGC 6543. These observations render it the second PN with high-resolution X-ray spectroscopic observations after BD +30°3639. The observations consist of 26 pointings, 14 of which included RGS observations for a total integration ti…
Physics of outflows near solar active regions
Price, D. J.; Taroyan, Y.
Hinode/EIS observations have revealed outflows near active regions which remain unexplained. An outflow region observed by the EUV Imaging Spectrometer (EIS) that appears slightly redshifted at low temperatures and blueshifted at higher temperatures is presented. We conduct simulations and use those to create synthetic line profiles in order to re…
Mab's orbital motion explained
Showalter, M. R.; de Pater, I.; Kumar, K.
We explored the hypothesis that Mab's anomalous orbital motion, as deduced from Hubble Space Telescope (HST) data (Showalter, M.R., Lissauer, J.J. [2006]. Science (New York, NY) 311, 973-977), is the result of gravitational interactions with a putative suite of large bodies in the µ-ring. We conducted simulations to compute the gravitational…