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Data-Based Modeling of the Earth's Magnetic Field
Sitnov, Mikhail; Stephens, Grant; Tsyganenko, Nikolai +2 more
A new laboratory emissivity and reflectance spectral library for the interpretation of Mars thermal infrared spectral data
Maturilli, A.; Helbert, J.; Alemanno, G. +1 more
New spectral orbital thermal infrared data of Mars are being acquired by the thermal infrared channel TIRVIM (in honor of Vassily Ivanovich Moroz) of the Atmospheric Chemistry Suite (ACS) of spectrometers on board of ExoMars2016 mission. TIRVIM encompasses the spectral range of 1.7-17 µm. A major challenge brought by the analysis of these da…
Planet Mercury: Volcanism in a theatre of global contraction, with examples from the Hokusai quadrangle
Byrne, Paul K.; Rothery, David A.; Wright, Jack
Mercury's geological history has been dominated by global contraction caused by secular cooling of the planet's interior. This cooling has had a profound effect on the expression of the planet's volcanism and tectonism, and the expressions of these two surface evolutionary processes are deeply intertwined. Here, we use case studies from the Hokusa…
Estimating the age-metallicity distribution of a stellar sample from the probability distributions of the individual stars
Lindegren, Lennart; Sahlholdt, Christian L.
Estimating age distributions, or star formation histories, of stellar populations in the Milky Way is important in order to study the evolution of trends in elemental abundances and kinematics. We build on previous work to develop an algorithm for estimating the age-metallicity distribution which uses the full age-metallicity probability density f…
Probing the spectral shape of dust emission with the DustPedia galaxy sample
Clark, Christopher J. R.; Mosenkov, Aleksandr V.; De Looze, Ilse +10 more
The objective of this paper is to understand the variance of the far-infrared (FIR) spectral energy distribution (SED) of the DustPedia galaxies, and its link with the stellar and dust properties. An interesting aspect of the dust emission is the inferred FIR colours which could inform us about the dust content of galaxies, and how it varies with …
Detecting episodes of star formation using Bayesian model selection
Acquaviva, Viviana; Lawler, Andrew J.
Bayesian model comparison frameworks can be used when fitting models to data in order to infer the appropriate model complexity in a data-driven manner. We aim to use them to detect the correct number of major episodes of star formation from the analysis of the spectral energy distributions (SEDs) of galaxies, modelled after 3D-HST galaxies at z ∼…
The z 2 [O III] Luminosity Function of Grism-selected Emission-line Galaxies
Schneider, Donald P.; Gronwall, Caryl; Ciardullo, Robin +7 more
Upcoming missions such as Euclid and the Nancy Grace Roman Space Telescope (Roman) will use emission-line-selected galaxies to address a variety of questions in cosmology and galaxy evolution in the z > 1 universe. The optimal observing strategy for these programs relies on knowing the number of galaxies that will be found and the bias of the g…
Landform evolution of Tharsis Montes and Olympus Mons of Mars: Insights from morphometric, hypsometric and chronologic evidences
Ahmad, Adnan; Nair, Archana M.
We studied the growth and evolutionary history of four major volcanoes of the Tharsis Province based on morphometry, age and hypsometric studies. Shield volcanoes of Tharsis volcanic province demonstrate marginally dissimilar landform evolutionary trends. Arsia Mons is distinct with a single caldera of large diameter and showed the highest asymmet…
Long-term XMM-Newton view of magnetar CXOU J010043.1-721134: comprehensive spectral and temporal results
Chatterjee, Rwitika; Agrawal, Vivek K.; Nandi, Anuj
We present an in-depth analysis and results of eleven XMM-Newton data sets, spanning 2000-2016, of the anomalous X-ray Pulsar CXOU J010043.1-721134 that has been classified as a magnetar. We find a spin period of 8.0275(1) s as of December 2016 and calculate the period derivative to be (1.76 ± 0.02) × 10-11 s s-1, which trans…
CSS J213934.3-050020: A New Double-mode High-amplitude δ Scuti-type Pulsating Star
Shi, Xiang-dong; Qian, Sheng-bang; Li, Lin-jia +1 more
CSS J213934.3-050020 (hereafter J213934) was originally found as an EW-type eclipsing binary star with a period of 0.225456 days by Catalina Real-time Transient Survey. With the stellar atmospheric parameters from the LAMOST, it is found that the temperature is much higher than those of normal EW-type binaries and does not follow the period-temper…