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A Statistical Comparison of EUV Brightenings Observed by SO/EUI with Simulated Brightenings in Nonpotential Simulations
Harra, Louise K.; Barczynski, Krzysztof; Berghmans, David +3 more
The High Resolution Imager (HRIEUV) telescope of the Extreme Ultraviolet Imager (EUI) instrument onboard Solar Orbiter has observed EUV brightenings, so-called campfires, as fine-scale structures at coronal temperatures. The goal of this paper is to compare the basic geometrical (size, orientation) and physical (intensity, lifetime) pro…
A deeper solution to the actual geometry of CCD mosaic chips
Vienne, A.; Lin, F. R.; Peng, Q. Y. +2 more
Context. For charge-coupled device (CCD) mosaic chips in the focal plane of a large telescope, the unification for all the measurements of each chip is vital to some scientific projects, such as deep astrometric standards or construction for deeper images that can also seamlessly cover a larger area of the sky. A key part of the reduction involves…
Cloud motion and magnetic fields: Four clouds in the Cepheus Flare region
Maheswar, G.; Dib, S.; Sharma, E.
Context. The Cepheus Flare region consists of a group of dark cloud complexes that are currently active in star formation.
Aims: The aim of this work is to estimate the motions of four clouds, namely L1147/1158, L1172/1174, L1228, and L1251, located at relatively high Galactic latitude (b > 14°) in the Cepheus Flare region. We study the re…
Infrared Properties of OGLE4 Mira Variables in Our Galaxy
Suh, Kyung-Won
We investigate infrared properties of OGLE4 Mira variables in our Galaxy. For each object, we cross-identify the AllWISE, 2MASS, Gaia, and IRAS counterparts. We present various IR two-color diagrams (2CDs) and period-magnitude and period-color relations for the Mira variables. Generally, the Mira variables with longer periods are brighter in the I…
Interplanetarymedium monitoring with LISA: Lessons from LISA Pathfinder
Cesarini, A.; Grimani, C.; Telloni, D. +4 more
The Laser Interferometer Space Antenna (LISA) of the European Space Agency (ESA) will be the first low-frequency gravitational-wave observatory orbiting the Sun at 1 AU. The LISA Pathfinder (LPF) mission, aiming at testing the instruments to be located on board the LISA spacecraft (S/C), hosted, among the others, fluxgate magnetometers and a parti…
Dust extinction map of the Galactic plane based on the VVV survey data
Zhang, M.; Kainulainen, J.
Dust extinction is one of the most reliable tracers of the gas distribution in the Milky Way. The near-infrared (NIR) Vista Variables in the Vía Láctea (VVV) survey enables extinction mapping based on stellar photometry over a large area in the Galactic plane. We devise a novel extinction mapping approach, XPNICER, by bringing together VVV photome…
Clay sediments derived from fluvial activity in and around Ladon basin, Mars
Weitz, Catherine M.; Wilson, Sharon A.; Grant, John A. +5 more
The morphology and mineralogy of light-toned layered sedimentary deposits were investigated using multiple orbital datasets across the Ladon basin region, including within northern Ladon Valles, southern Ladon basin, and the southwestern highlands of Ladon basin. Light-toned layered deposits are particularly widespread in Ladon Valles and Ladon ba…
Insights into the Evolution of Five Isolated Galaxies
Wolter, A.; Uslenghi, M.; Marino, A. +3 more
Galaxy evolution is believed to be conditioned by the environment. Isolated galaxies or galaxies in poor groups are an excellent laboratory to study evolutionary mechanisms where effects of the environment are minimal. We present new Swift-UVOT data in six filters, three in the ultraviolet (UV), of five isolated galaxies aiming at shedding light i…
Completing the protostellar luminosity function in Cygnus-X with SOFIA/FORCAST imaging
Gutermuth, Robert A.; Pokhrel, Riwaj; Heyer, Mark +4 more
We present a new SOFIA/FORCAST mid-infrared survey of luminous protostars and crowded star-forming environments in Cygnus X, the nearest million-solar mass molecular cloud complex. We derive bolometric luminosities for over 1000 sources in the region with these new data in combination with extant Spitzer and UKIDSS photometry, with 63 new luminous…
The strongly irradiated planets in Praesepe
Wheatley, Peter J.; Agüeros, Marcel A.; King, George W. +3 more
We present an analysis of XMM-Newton observations of four stars in the young (670 Myr) open cluster Praesepe. The planets hosted by these stars all lie close in radius-period space to the radius-period valley and/or the Neptunian desert, two features that photoevaporation by X-ray and extreme ultraviolet (EUV) photons could be driving. Although th…