Search Publications
Convective storms in closed cyclones in Jupiter's South Temperate Belt: (I) observations
Wong, Michael H.; Baines, Kevin H.; Hueso, Ricardo +19 more
On May 31, 2020 a short-lived convective storm appeared in one of the small cyclones of Jupiter's South Temperate Belt (STB) at planetographic latitude 30.8°S. The outbreak was captured by amateur astronomer Clyde Foster in methane-band images, became widely known as Clyde's Spot, and was imaged at very high resolution by the Junocam instrument on…
Nano-grain depletion in photon-dominated regions
Abergel, A.; Ysard, N.; Habart, E. +3 more
Context. Carbonaceous nano-grains play a fundamental role in the physico-chemistry of the interstellar medium (ISM) and especially of photon-dominated regions (PDRs). Their properties vary with the local physical conditions and affect the local chemistry and dynamics.
Aims: We aim to highlight the evolution of carbonaceous nano-grains in thre…
TOI-712: A System of Adolescent Mini-Neptunes Extending to the Habitable Zone
Vanderburg, Andrew; Hellier, Coel; Triaud, Amaury H. M. J. +41 more
As an all-sky survey, NASA's Transiting Exoplanet Survey Satellite (TESS) mission is able to detect the brightest and rarest types of transiting planetary systems, including young planets that enable study of the evolutionary processes that occur within the first billion years. Here we report the discovery of a young, multiplanet system orbiting t…
Photometric calibration methods for wide-field photometric surveys
Huang, Bowen; Yuan, Haibo; Xiao, Kai
Uniform and accurate photometric calibration plays an important role in the current and next-generation wide-field imaging surveys. Herein, we review the modern photometric calibration methods, including the classic standard star method, "hardware/observation-driven" methods (such as the Ubercalibration, Hypercalibration, and Forward Global Calibr…
J-PLUS: Detecting and studying extragalactic globular clusters. The case of NGC 1023
Cortesi, Arianna; Chies-Santos, Ana L.; Forbes, Duncan A. +19 more
Context. Extragalactic globular clusters (GCs) are key objects in studies of galactic histories. The advent of wide-field surveys, such as the Javalambre Photometric Local Universe Survey (J-PLUS), offers new possibilities for the study of these systems.
Aims: We performed the first study of GCs in J-PLUS to recover information on the history…
Discovery of SiO Masers in the "Water Fountain" Source IRAS 16552-3050
Tafoya, D.; Gómez, J. F.; Uscanga, L. +7 more
In this paper, we report new detections of SiO v = 1 and v = 2 J = 1 → 0 masers in the "water fountain" source IRAS 16552-3050, which was observed with the Nobeyama 45 m telescope during 2021 March-April. Water fountains are evolved stars whose H2O maser spectra trace high-velocity outflows of >100 km s-1. This is the seco…
Characterization of ionospheric irregularities over the equatorial and low latitude Nigeria region
Simi, K. G.; Ogwala, Aghogho; Oyedokun, Oluwole John +5 more
Ionospheric irregularity poses severe challenges to the highly dynamic satellite communication, navigation and tracking operations that rely on transionospheric satellite services like the operation of the Global Navigation Satellite System (GNSS). Although numerous studies on the effect of geomagnetic storms on the inhibition or suppression of ir…
Three-Dimensional Structure of the Corona During WHPI Campaign Rotations CR-2219 and CR-2223
Lamy, P.; Gilardy, H.; Nuevo, F. A. +6 more
Differential emission measure tomography (DEMT) and white light (WL) tomography were applied to study the three-dimensional (3D) structure of the global solar corona for two Whole Heliosphere and Planetary Interactions campaign periods, Carrington rotations 2219 and 2223. With DEMT, Solar Dynamics Observatory/Atmospheric Imaging Assembly images we…
S-PLUS: exploring wide field properties of multiple populations in galactic globular clusters at different metallicities
Chies-Santos, Ana L.; Mendes de Oliveira, Claudia; Bastian, Nate +9 more
Multiple stellar populations (MSPs) are a ubiquitous phenomenon in Galactic globular clusters (GCs). By probing different spectral ranges affected by different absorption lines using the multiband photometric survey S-PLUS, we study four GCs - NGC 104, NGC 288, NGC 3201, and NGC 7089 - that span a wide range of metallicities. With the combination …
Gaia 0007-1605: An Old Triple System with an Inner Brown Dwarf-White Dwarf Binary and an Outer White Dwarf Companion
Rebassa-Mansergas, Alberto; Raddi, Roberto; Torres, Santiago +5 more
We identify Gaia 0007-1605 A,C as the first inner brown dwarf-white dwarf binary of a hierarchical triple system in which the outer component is another white dwarf (Gaia 0007-1605 B). From optical/near-infrared spectroscopy obtained at the Very Large Telescope with the X-Shooter instrument and/or from Gaia photometry plus spectral energy distribu…