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Northern Galactic Molecular Cloud Clumps in Hi-GAL: Clump and Star Formation within Clouds
Rosolowsky, Erik; Zetterlund, Erika; Glenn, Jason
We investigate how the properties of Galactic giant molecular clouds (GMCs) and their denser substructures (clumps) correlate with the local star formation rate (SFR). We trace clouds using the 12CO(3-2) transition, as observed by the CO High Resolution Survey. We identify their constituent clumps using thermal dust emission, as observe…
Optical alignment of the Solar Orbiter EUI flight instrument
Auchère, F.; Jacques, L.; Schühle, U. +12 more
The Extreme Ultraviolet Imager (EUI) instrument for the Solar Orbiter mission will image the solar corona in the extreme ultraviolet (17.1 nm and 30.4 nm) and in the vacuum ultraviolet (121.6 nm). It is composed of three channels, each one containing a telescope. Two of these channels are high resolution imagers (HRI) at respectively 17.1 nm (HRI-…
Seasonal change of CH4/H2 ratio in the atmosphere of Uranus
Tu, Cui; Wang, Cong; Hu, Xiong
Uranus is mainly composed of elements heavier than hydrogen and helium, such as C, S, even though very little information about these elements has been detected. Methane is one of the most important component of the atmosphere of Uranus. Analysis of the full-disk spectra of Uranus, as observed by the Xinglong 2.16m telescope with BFOSC (Beijing-Fa…
New Carbon Stars Confirmed in the Digitized First Byurakan Survey Database
Gigoyan, K. K.; Gigoyan, K. S.; Kostandyan, G. R. +2 more
Refined proper motions of some high-velocity stars
Dambis, A. K.; Rastorguev, A. S.; Zhuiko, S. V.
We improve the Gaia DR2 proper motions of nine high-velocity stars with the highest proper-motion errors. We reduce the transversal-velocity errors for our stars from to 1.5-746 km/s. We combine our refined proper motions with published radial-velocity and distance data to compute the orbits of these stars in terms of the axisymmetric potential mo…
Analysis of exoplanetary system WASP-118
Fedurco, M.; Vaňko, M.; Parimucha, Š. +1 more
We present a new study of a recently discovered exoplanetary system WASP-118. The system consists of an F-type star and a close-in giant planet (an inflated hot Jupiter). Using Kepler-K2 observations, we re-determined the orbital and physical parameters of the system. Our results are in good agreement with the values published in the literature. T…
The descent and rebound trajectory of comet lander Philae
WEN, TongGe; ZENG, XiangYuan; WANG, ShuQuan
Erratum to 'Isotopic Ratios of Saturn's Rings and Satellites: Implications for the Origin of Water and Phoebe' [ICARUS 321 (2019) 791-802]
Clark, Roger N.; Brown, Robert H.; Cruikshank, Dale P. +1 more
This article was temporarily removed from online publication in November 2018 after the article was accepted. The temporary removal was to coordinate a press release with the online publication of the article. There were no errors or problems with the content of the article.
Zooming out: what a broader view is telling us about stellar and substellar conglomerates
Peña Ramírez, K.
Measuring the distributions of ages and masses of low-mass stars and substellar sources in different young environments requires a thorough census of this specific population. Typically, studies have searched for defined conglomerate members using signatures of youth (variability, emission lines, infrared (IR) excess emission, X-ray emission), pro…
From Mars Express to ExoMars: Two missions working together around Mars
López-Valverde, M. A.; Cardesín-Moinelo, A.; Mars Express Centre +1 more
This year 2018 is very important for the Mars scientific community in Europe since for the first time two missions of the European Space Agency coincide around the orbit of Mars, opening a great opportunity for collaboration to improve our understanding of our neighbour planet. The Mars Express mission is fully operational and has been providing g…