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Exploring Mutual Information between IRIS Spectral Lines. II. Calculating the Most Probable Response in all Spectral Windows
Kleint, Lucia; Panos, Brandon
A three-dimensional picture of the solar atmosphere's thermodynamics can be obtained by jointly analyzing multiple spectral lines that span many formation heights. In Paper I, we found strong correlations between spectral shapes from a variety of different ions during solar flares in comparison to the quiet Sun. We extend these techniques to addre…
Turbulence and Complexity of Magnetospheric Plasmas
Bruno, Roberto; Consolini, Giuseppe; Mursula, Kalevi +8 more
Probing the CGM of low-redshift dwarf galaxies using FIRE simulations
Stern, Jonathan; Faucher-Giguère, Claude-André; Hafen, Zachary +7 more
Observations of ultraviolet (UV) metal absorption lines have provided insight into the structure and composition of the circumgalactic medium (CGM) around galaxies. We compare these observations with the low-redshift (z ≤ 0.3) CGM around dwarf galaxies in high-resolution cosmological zoom-in runs in the FIRE-2 (Feedback In Realistic Environments) …
The SOPHIE search for northern extrasolar planets. XVII. A wealth of new objects: Six cool Jupiters, three brown dwarfs, and 16 low-mass binary stars
Bouchy, F.; Deleuil, M.; Moutou, C. +30 more
Distinguishing classes within substellar objects and understanding their formation and evolution need larger samples of substellar companions such as exoplanets, brown dwarfs, and low-mass stars. In this paper, we look for substellar companions using radial velocity surveys of FGK stars with the SOPHIE spectrograph at the Observatoire de Haute-Pro…
ENISALA. II. Distinct Star Formation and Active Galactic Nucleus Activity in Merging and Relaxed Galaxy Clusters
Sobral, David; Stroe, Andra
The growth of galaxy clusters is energetic and may trigger and/or quench star formation and black hole activity. The ENISALA4 project is a collection of multiwavelength observations aimed at understanding how large-scale structure drives galaxy and black hole evolution. Here, we introduce optical spectroscopy of over 800 Hα emission-lin…
A Collage of Small Planets from the Lick-Carnegie Exoplanet Survey: Exploring the Super-Earth and Sub-Neptune Mass Regime
Butler, R. Paul; Vogt, Steven S.; Henry, Gregory W. +12 more
Analysis of new precision radial velocity (RV) measurements from the Lick Automated Planet Finder and Keck HIRES has yielded the discovery of three new exoplanet candidates orbiting the nearby stars HD 190007 and HD 216520. We also report new velocities from the APF and the Planet Finder Spectrograph and updated orbital fits for the known exoplane…
RELICS: ICL Analysis of the z = 0.566 Merging Cluster WHL J013719.8-08284
Coe, Dan; Jiménez-Teja, Yolanda; Dupke, Renato A. +3 more
We present a pilot study of the intracluster light (ICL) in massive clusters using imaging of the z = 0.566 cluster of galaxies WHL J013719.8-08284 observed by the RELICS project with the Hubble Space Telescope. We measure the ICL fraction in four optical ACS/WFC filters (F435W, F475W, F606W, and F814W) and five infrared WFC3/IR bands (F105W, F110…
A statistical study of solar radio Type III bursts and space weather implication
Ndacyayisenga, Theogene; Uwamahoro, Jean; Monstein, Christian +1 more
Solar radio bursts (SRBs) are the signatures of various phenomenon that happen in the solar corona and interplanetary medium (IPM). In this article, we have studied occurrence of Type III bursts and their association with the Sunspot number. This study confirms that occurrence of Type III bursts correlate well with Sunspot number. Further, using t…
Three-dimensional Climate Simulations for the Detectability of Proxima Centauri b
Berrilli, Francesco; Giovannelli, Luca; Galuzzo, Daniele +2 more
The discovery of a planet orbiting around Proxima Centauri, the closest star to the Sun, opens new avenues for the remote observations of the atmosphere and surface of an exoplanet, Proxima b. To date, three-dimensional (3D) general circulation models (GCMs) are the best available tools to investigate the properties of the exo-atmospheres, waiting…
Model Age Derivation of Large Martian Impact Craters, Using Automatic Crater Counting Methods
Norman, C.; Lagain, A.; Servis, K. +3 more
Determining when an impact crater formed is a complex and tedious task. However, this knowledge is crucial to understanding the geological history of planetary bodies and, more specifically, gives information on erosion rate measurements, meteorite ejection location, impact flux evolution and the loss of a magnetic field. The derivation of an indi…