Search Publications
SX Piscium: A near-contact mass-transferring binary with a possible brown dwarf companion
Wang, Zhi Hua; Zhu, Li Ying
SX Psc is a short-period Algol-type eclipsing binary whose photometric analysis has long been ignored. Our photometric monitoring of this target covered from 2001 December to 2018 November. Aside from some curves observed at the primary eclipses, the complete four-color light curves in the BVRcIc band were also obtained. Phot…
Oblique Reflections of Mars Express MARSIS Radar Signals From Ionospheric Density Structures: Raytracing Analysis
Gurnett, D. A.; Němec, F.; Morgan, D. D. +2 more
Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) radar sounder on board the Mars Express spacecraft revealed oblique reflections coming systematically from apparently stable density structures in the Martian ionosphere. Although these were typically interpreted by assuming a straight line propagation of the sounding signal at th…
Inner Source Pickup Ions from Chondritic Smooth Interplanetary Dust Particles
Möbius, E.; Schwadron, N. A.; Quinn, P. R.
Inner source pickup ions (PUIs) are thought to be produced by the interaction between solar wind ions and interplanetary dust particles (IDPs). The amount of PUIs produced and their velocity distribution depend on the composition, density, porosity, and size of the IDPs. Quinn et al. simulated the production of PUIs from chondritic porous (CP) IDP…
Material of Cometary Nuclei and Asteroids can BE Studied in the Earth's Orbit
Vidmachenko, A. P.; Steklov, A. F.
The Solar system is formed from a primary gas-dust cloud. Asteroids and cometary nuclei are made of the same substance. Therefore, the study of their debris will help determine their properties. It is best to investigate the substance of meteoroids in the laboratory. The presence of radioactive chemical elements in meteorites provides important in…
Lunar Occultations with Aqueye+ and Iqueye
Naletto, Giampiero; Burtovoi, Aleksandr; Zampieri, Luca +8 more
We report the first-time use of the Aqueye+ and Iqueye instruments to record lunar occultation events. High time resolution recordings in different filters have been acquired for several occultations taken from 2016 January through 2018 January with Aqueye+ at the Copernicus telescope and Iqueye at the Galileo telescope in Asiago, Italy. Light cur…
Asymmetric Transport of the Earth’s Polar Outflows by the Interplanetary Magnetic Field
Feng, Xueshang; Huang, Can; Li, Kun +3 more
The polar outflows, as an important plasma source of the Earth’s magnetosphere, usually exhibit significant north-south asymmetries, which can strongly affect the plasma distributions in the magnetotail lobe and perhaps contribute to the substorm triggering. But the mechanism of the asymmetric transport of these outflows is still unclear. In this …
Probing Coronal Magnetic Fields with Sungrazing Comets: H I Lyα from Pickup Ions
Raymond, J. C.; Giordano, S.
Observations of sungrazing comets can be used to probe the solar corona, to study the composition of the comets, and to investigate the plasma processes that govern the interaction between the coronal plasma and cometary gas. UVCS observations of the intensities and line profiles of H I Lyα trace the density, temperature, and outflow speed of the …
Relating the Carriers of λ5797.1 Diffuse Interstellar Band and λ5800 Red Rectangle Band
Adams, Keir; Oka, Takeshi
The emission spectra of the λ5800 Red Rectangle Band (RRB) are simulated at all regions of the Red Rectangle Nebula, utilizing a polar carbon chain model previously developed for the λ5797.1 diffuse interstellar band (DIB) in absorption in the interstellar medium. If high radiative temperatures are assumed, radiative pumping of numerous rotational…
Search for exoplanetary transits in the Galactic bulge
Minniti, D.; Villanova, S.; Cortés, C. C.
A search for extrasolar planetary transits using extended Kepler mission (K2) campaigns 9 and 11 revealed five new candidates towards the Galactic bulge. The stars EPIC 224439122, 224560837, 227560005, 230778501 and 231635524 are found to have low-amplitude transits consistent with extrasolar planets, with periods P = 35.1695, 3.6390, 12.4224, 17.…
Investigation of the stellar content in the IRAS 05168+3634 star-forming region
Azatyan, N. M.
Aims: We report the investigation results of the structure and content of a molecular cloud surrounding the source IRAS 05168+3634 (also known as Mol 9).
Methods: We present a photometric analysis using the data of J, H, K UKIDSS, [3.6], [4.5] µm Spitzer-IRAC and 3.4, 4.6, 12, 22 µm WISE databases. A multi-color criteria was …