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A holistic study of the systems V0487 Lac, V0566 Hya, and V0666 Lac
Alenazi, Moqbil S.; Elkhateeb, Magdy M.
A comprehensive photometric study and evolutionary state for the systems V0487 Lac, V0566 Hya, and V0666 Lac were carried out by means of their first photometric observations. New times of minima were estimated from the observed light curves, and first (O-C) curves were established for all systems. The radiative treatment was carried out using a W…
Impact of Mars GDS 2018 on the Chemistry of Water, Nitrogenated and Deuterated Cluster Ions: NOMAD Observations
Korablev, O.; Haider, S. A.; Shah, Siddhi Y.
The ExoMars Trace Gas Orbiter instruments, Nadir and Occultation for Mars Discovery and Atmospheric Chemistry Suite have provided vertical profiles of H2O and HDO mixing ratios in the presence and absence of Global Dust Storm 2018. These observations are carried out in the lower atmosphere at SZA ∼ 71° of northern mid latitude (∼55°N, 1…
Model-driven engineering for low-code ground support equipment configuration and automatic test procedures definition
Carrasco, Alberto; Martínez, Agustín; Sánchez, Sebastián +4 more
Space domain systems must go through different types of ground testing. For system-level black-box functional testing, ground support equipment is built ad hoc, customized for each different mission. Building any of this specific equipment involves considerable engineering effort that can be diluted using techniques that allow reusing configuratio…
Main Results from the ISSI International Team "Characterization of 67P Cometary Activity"
Longobardo, Andrea; Della Corte, Vincenzo; Fulle, Marco +8 more
The ESA/Rosetta mission accompanied the Jupiter Family Comet 67P/Churyumov-Gerasimenko and provided a huge amount of data which are providing important results about cometary activity mechanisms. We summarize the results obtained within the ISSI International Team Characterization of 67P cometary activity, which studied dust and gas ejection in di…
Thin jets underlie the solar wind
Ugarte-Urra, Ignacio; Wang, Yi-Ming
The Solar Orbiter spacecraft was launched in 2020 by the European Space Agency to study how solar activity drives changes in the inner part of the heliosphere, the region that extends from the Sun to the surrounding interstellar medium. The Solar Orbiter is fitted with a suite of in situ and remote-sensing instruments that allow measurement of the…
Performance of the polarization leakage correction in the PILOT data
Griffin, Matt; Savini, Giorgio; Hughes, Annie +34 more
The Polarized Instrument for Long-wavelength Observation of the Tenuous interstellar medium (PILOT) is a balloon-borne experiment that aims to measure the polarized emission of thermal dust at a wavelength of 240µm (1.2 THz). The PILOT experiment flew from Timmins, Ontario, Canada in 2015 and 2019 and from Alice Springs, Australia in April 2017. T…
IRAS 00450+7401 and the Mid-infrared Fade/Burst Cycle of R Coronae Borealis-type Stars
Melis, Carl; Wright, E. L.; Della Costa, John +3 more
We present optical and infrared imaging and spectroscopy of the R Coronae Borealis-type (R Cor Bor) star IRAS 00450+7401. Optical spectra further confirm its classification as a cool R Cor Bor system, having a hydrogen-deficient carbon star spectral subclass of HdC5 or later. Mid-infrared spectroscopy reveals the typical ~8 µm "hump" seen in…
Martian CO profiles from the solar occultation experiment of NOMAD on board TGO
Aoki, S.; Vandaele, A. C.; Daerden, F. +18 more
Carbon monoxide is one of the important minor species in the Martian atmosphere due to its role in the photochemical stability of the \ce{CO2} atmosphere and can also be used as a dynamical tracer. The SO spectrometer onboard the Trace Gas Orbiter (TGO) scans the Martian limb in the infrared provides transmittances with fine vertical sampling ($\s…
Revisiting the old end of the Milky Way open cluster age function
Piatti, Andrés E.
Age distribution of the open cluster system is a key piece of information to decipher the star-formation history of the milky way disk. Recently, a remarkable earlier drop of its older end was found, which caught our attention. Precisely, we analysed in detail the population of open clusters older than 1 Gyr located inside a circle of 2.0 kpc from…
Sparse Logistic Regression for RR Lyrae versus Binaries Classification
Bono, Giuseppe; Pasquato, Mario; Braga, Vittorio F. +4 more
RR Lyrae (RRL) stars are old, low-mass, radially pulsating variable stars in their core helium burning phase. They are popular stellar tracers and primary distance indicators since they obey well-defined period-luminosity relations in the near-infrared regime. Their photometric identification is not trivial; indeed, RRL star samples can be contami…