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New Photometric Investigation of the Solar-Type Shallow-Contact Binary HH Bootis
He, Jia-jia; Wang, Jing-jing
Four-color charge-coupled device (CCD) light curves in $B$, $V$, $Rc$ and $Ic$ bands of the total-eclipsing binary system, V1853 Ori, are presented. By comparing our light curves with those published by previous investigators, it is detected that the O'Connell effect on the light curves is disappeared. By analyzing those multi-color light curves w…
The eastern & western elongations of Venus, 2007-'17. I. The sunlit hemisphere
McKim, R. J.; Abel, P.; Leatherbarrow, W. J.
Fourteen successive morning and evening elongations of Venus from 2007-2017 are reviewed. The work of 153 observers covered the time period of ESA's Venus Express and Japan's Akatsuki missions, and wavelengths from 335-1750nm. The instantaneous rotation period of the ultraviolet markings was studied as a function of latitude, and the results compa…
Second Outburst of the Yellow Symbiotic Star LT Delphini
Arkhipova, V. P.; Ikonnikova, N. P.; Komissarova, G. V.
We present the results of our photoelectric UBV observations of the yellow symbiotic star LT Del over 2010-2018. The binary system LT Del, which consists of a bright K giant and a compact hot star with a temperature of 100 000 K, has an orbital period of 476 days. In 2017 the variable experienced a second low-amplitude (Δ V 0 ṃ 7) outbu…
Ground-based Paα narrow-band imaging of local luminous infrared galaxies. II. Bulge structure and star formation activity
Komugi, Shinya; Takahashi, Hidenori; Doi, Mamoru +8 more
We present properties of two types of bulges (classical and pseudobulges) in 20 luminous infrared galaxies observed in the near infrared of the H, Ks, and 1.91µm narrow-band targeting of the hydrogen Paα emission line by the University of Tokyo Atacama Observatory 1 m telescope. To classify the two types of bulges, we first perfor…
Probabilistic galeeactic dynamics - I. The Sun and GJ 710 with Monte Carlo, linearized, and unscented treatments
Jones, H. R. A.; Feng, F.
Deterministic galactic dynamics is impossible due to a lack of precise knowledge of the initial conditions and galactic potential. Instead of treating stellar orbits deterministically, we integrate not only the mean but also the covariance of a stellar orbit in the Galaxy. As a test case, we study the probabilistic dynamics of the Sun and the star…
The intermediate age population of the Galactic halo
Mould, Jeremy
We have learned recently that the inner halo of the Milky Way contains a kinematically coherent component (Gaia-Enceladus) from a significant merger 10 Gyrs ago. By contrast the inner (defined to exclude the Magellanic Stream) halo contains no similar intruder stellar population of billion year age. The tracer we use to set the corresponding upper…
Central Wavelengths and Profile Shapes of Diffuse Interstellar Bands versus Physical Parameters of Intervening Clouds
Krełowski, J.; Galazutdinov, G. A.; Marić, T. +2 more
We investigate whether there are variations of the central wavelengths or the profile shapes of diffuse interstellar bands and whether these variations are caused by different physical parameters of translucent clouds. For this purpose we used spectra of two stars seen through two different single clouds: HD 34078 (AE Aur) and HD 73882. The wavele…
Corrigendum to "Neptune's carbon monoxide profile and phosphine upper limits from Herschel/SPIRE" (Icarus, vol 319, p86-98, 2019)
Irwin, P. G. J.; Teanby, N. A.; Moses, J. I.
The authors would like to publish the below information which was incorrectly published in its original version.
Black coatings for combined stray light and thermal passive management for the challenging environmental conditions of Solar Orbiter
Castronuovo, Marco; Schillaci, Tiziano; Montemurro, Luca +4 more
In the context of ESA's Cosmic Vision 2015-2025 scientific program, Solar Orbiter (SolO) represents the first M-class mission, currently under implementation for a launch planned in October 2018.
One of the SolO solar remote-sensing instruments is the Multi Element Telescope for Imaging and Spectroscopy (METIS), under development by an Italia…
Metis/Solar Orbiter polarimetric visible light channel calibration
Romoli, M.; Andretta, V.; Uslenghi, M. +16 more
Metis is the solar coronagraph of the ESA mission Solar Orbiter. For the first time, Metis will acquire simultaneous images of the solar corona in linearly polarized, broadband visible light (580-640 nm) and in the narrow-band HI Ly-α line (121.6 nm). The visible light path includes a polarimeter, designed to observe and analyse the K-corona linea…