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Plumes emission from a fracture on a planetary surface using Smoothed Particle Hydrodynamics: The case of Enceladus 用光滑粒子流体力学研究行星表面裂缝的羽流发射:土卫二的例子
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-26 DOI: 10.1016/j.icarus.2025.116765
Matteo Teodori , Luca Maggioni , Gianfranco Magni , Michelangelo Formisano , Maria Cristina De Sanctis , Francesca Altieri
{"title":"Plumes emission from a fracture on a planetary surface using Smoothed Particle Hydrodynamics: The case of Enceladus","authors":"Matteo Teodori ,&nbsp;Luca Maggioni ,&nbsp;Gianfranco Magni ,&nbsp;Michelangelo Formisano ,&nbsp;Maria Cristina De Sanctis ,&nbsp;Francesca Altieri","doi":"10.1016/j.icarus.2025.116765","DOIUrl":"10.1016/j.icarus.2025.116765","url":null,"abstract":"<div><div>The emission of volatiles from the surface and subsurface of planetary bodies can provide fundamental knowledge concerning their formation, evolution, and structure. There are a variety of physical processes that shape the structural, kinematic and thermal behavior of the released material. We simulate Enceladus’ plumes outgassing from a surface fracture, characterizing their dynamical and thermal behavior by introducing an advanced numerical model, that adopts the Smoothed Particle Hydrodynamics (SPH) approach. We target and discuss the challenging implementation of several important microscopic phenomena that can alter the macroscopic properties of the simulated plume. Indeed, we consider the dynamical interaction with solid boundaries, the phase transitions, the solar radiation, the thermal interaction with Enceladus’ surface, the viscous drag coupling and the gravitational attraction. We run simulations with two values of the icy grains size, to explore the role of such parameter in the considered effects. The simulations results are consistent with the expected physical behavior and the observed properties of Enceladus’ plumes. We discuss the role of the processes in shaping the velocity, temperature, and density distributions for the vapor and ice components. We calculate the amount of mass loss from the surface fracture, obtaining values consistent with previous estimates. Similarly occurs for the ice deposition rate near the fracture, over the surface of Enceladus. The good agreement between our results and the current knowledge about Enceladus’ plumes supports the strength of an SPH based approach to study the emission of volatiles from the surface and subsurface of planetary objects. Such a model offers a unique tool in the investigation of the occurring phenomena, as well as for predicting and comparing with observations.</div></div>","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116765"},"PeriodicalIF":3.0,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The perturbation theory approach to stability in the scattered disk 散盘稳定性的微扰理论研究
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-22 DOI: 10.1016/j.icarus.2025.116773
Matthew Belyakov, Konstantin Batygin
{"title":"The perturbation theory approach to stability in the scattered disk","authors":"Matthew Belyakov,&nbsp;Konstantin Batygin","doi":"10.1016/j.icarus.2025.116773","DOIUrl":"10.1016/j.icarus.2025.116773","url":null,"abstract":"<div><div>Scattered disk objects (SDOs) are distant minor bodies that orbit the sun on highly eccentric orbits, frequently with perhelia near Neptune’s orbit. Gravitational perturbations due to Neptune frequently lead to chaotic dynamics, with the degree of chaotic diffusion set by an object’s perihelion distance. Batygin et al., (2021) developed a perturbative approach for scattered disk dynamics, finding that, to leading order in semi-major axis ratio, an infinite series of <span><math><mrow><mn>2</mn><mo>:</mo><mi>j</mi></mrow></math></span> resonances drives the dynamics of the distant scattered disk, with overlaps between resonances driving chaotic motion. In this work we extend this model by taking the spherical harmonic expansion for Neptune’s gravitational potential to octupole order and beyond. In continuing the expansion out to smaller semi-major axis limits, we find that the <span><math><mrow><mn>1</mn><mo>:</mo><mi>j</mi></mrow></math></span> and <span><math><mrow><mn>3</mn><mo>:</mo><mi>j</mi></mrow></math></span> resonances that emerge in the octupole expansion do not individually set new limits on the stability boundary. Instead, we find that for increasingly Neptune-proximate orbits, resonances of progressively higher index are dominant in explaining the emergence of chaotic behavior. In this picture, the mutual intersections between series of <span><math><mrow><mn>2</mn><mo>:</mo><mi>j</mi></mrow></math></span>, <span><math><mrow><mn>3</mn><mo>:</mo><mi>j</mi></mrow></math></span>, <span><math><mrow><mn>4</mn><mo>:</mo><mi>j</mi><mo>…</mo><mo>,</mo></mrow></math></span> resonant chains explain local chaotic evolution of SDOs and shape the dynamical distribution of the population at large.</div></div>","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116773"},"PeriodicalIF":3.0,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A deep learning-based two-stage feature matching method for small celestial body 3D shape reconstruction 基于深度学习的小天体三维形状重建两阶段特征匹配方法
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-21 DOI: 10.1016/j.icarus.2025.116758
Falin Wu , Jingyao Yang , Guoxin Qu , Yushuang Liu , Haoxin Li , Yuting Cheng , Dongjing Yang
{"title":"A deep learning-based two-stage feature matching method for small celestial body 3D shape reconstruction","authors":"Falin Wu ,&nbsp;Jingyao Yang ,&nbsp;Guoxin Qu ,&nbsp;Yushuang Liu ,&nbsp;Haoxin Li ,&nbsp;Yuting Cheng ,&nbsp;Dongjing Yang","doi":"10.1016/j.icarus.2025.116758","DOIUrl":"10.1016/j.icarus.2025.116758","url":null,"abstract":"<div><div>The exploration of small celestial bodies (SCBs) represents a critical frontier in deep space research. Given the weak gravitational fields characteristic of SCBs, the ‘touch-and-go’ approach has been widely adopted in recent missions. This method necessitates the development of high-resolution models of these celestial bodies. However, the significant photometric variations encountered in deep space pose substantial challenges for feature matching between images, thereby limiting the applicability of stereo photogrammetry (SPG) techniques for model construction. To address these challenges, this study proposes a novel stereo photogrammetry (SPG) method incorporating an efficient ‘two-stage’ feature matching algorithm designed to handle images with significant lighting variations. By leveraging deep learning networks and DBSCAN clustering for feature matching, the method achieves robust matching outcomes. Depth information is subsequently reconstructed using structure from motion (SfM) techniques, eliminating the need for external camera parameters. Furthermore, the proposed method enables the construction of a more accurate Bennu model, closely approximating Lidar-based models, while requiring fewer images.</div></div>","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116758"},"PeriodicalIF":3.0,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preservation of organic traces of life under Martian conditions: Influence of the nature of the smectite in presence 火星条件下有机生命痕迹的保存:存在的蒙脱石性质的影响
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-21 DOI: 10.1016/j.icarus.2025.116789
I. Criouet , S. Bernard , E. Balan , F. Baron , A. Buch , F. Skouri-Panet , M. Guillaumet , L. Delbes , L. Remusat , J.-C. Viennet
{"title":"Preservation of organic traces of life under Martian conditions: Influence of the nature of the smectite in presence","authors":"I. Criouet ,&nbsp;S. Bernard ,&nbsp;E. Balan ,&nbsp;F. Baron ,&nbsp;A. Buch ,&nbsp;F. Skouri-Panet ,&nbsp;M. Guillaumet ,&nbsp;L. Delbes ,&nbsp;L. Remusat ,&nbsp;J.-C. Viennet","doi":"10.1016/j.icarus.2025.116789","DOIUrl":"10.1016/j.icarus.2025.116789","url":null,"abstract":"<div><div>Clay-rich Martian rocks are considered promising targets in the search for fossilized remains of ancient Martian life. However, the actual influence of the clay mineral compositions in preserving microbial biosignatures remains poorly understood. Here, we explore the biopreservation potential of three pure smectites typically found on Mars and containing Al in their tetrahedral sheets (i.e. a Mg-rich, a Fe-rich and a Al-rich smectite), relying on experiments run using <em>E. coli</em> as a biological analog to simulate hydrothermal alteration scenarios relevant to Mars. The results show that Mg-rich smectites (saponite) are more effective at preserving biomolecules from thermal degradation than Fe-rich and Al-rich smectites (nontronite and beidellite). Plus, in contrast to saponite, neither nontronite nor beidellite appears to significantly trap (and thus preserve) organic compounds within their interlayer spaces. Overall, the present study highlights that both the chemistry and the abundance of organic material in ancient Martian clay-rich rocks will depend on the compositional nature of smectites initially present.</div></div>","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116789"},"PeriodicalIF":3.0,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rotational Light Curve, phase, and visible colors of (52246) Donaldjohanson throughout Lucy Mission Flyby 旋转光曲线,相位和可见颜色(52246)Donaldjohanson在整个露西任务飞越
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-20 DOI: 10.1016/j.icarus.2025.116771
A.C. Souza-Feliciano , F.L. Rommel , B.E. Morgado , L.M. Catani
{"title":"Rotational Light Curve, phase, and visible colors of (52246) Donaldjohanson throughout Lucy Mission Flyby","authors":"A.C. Souza-Feliciano ,&nbsp;F.L. Rommel ,&nbsp;B.E. Morgado ,&nbsp;L.M. Catani","doi":"10.1016/j.icarus.2025.116771","DOIUrl":"10.1016/j.icarus.2025.116771","url":null,"abstract":"<div><div>The main belt asteroid (52246) Donaldjohanson was visited on April 20th of 2025 by the <em>Lucy</em> spacecraft. We took this opportunity to observe the object with the SOAR telescope, aiming to create synergy between ground- and space-based observations. Our goal includes refining the rotational period of (52246) <strong>Donaldjohanson</strong>, determining the rotational phase of the flyby observation, and obtaining the photometric colors of (52246) Donaldjohanson in the SDSS and <strong>Bessell–Johnson system</strong>. To achieve our goals, we used photometric observations of (52246) Donaldjohanson from three datasets: obtained in (i) <strong>during the week of Lucy flyby</strong> on the SOAR Telescope using <em>r-</em> and <em>i-</em> filters of the SDSS system in five different nights; (ii) <strong>August 2019, also on the</strong> SOAR Telescope using <em>R-</em> and <em>V-</em> filters of the Bessell–Johnson system <strong>on</strong> two nights; and (iii) between 2018 and 2025 on the <em>r-</em>, <em>g-</em>, and <em>i-</em> filters of the ZTF survey. Using the ZTF database and SOAR observations, the Lomb<strong>-</strong>Scargle periodogram confirms its long rotational period of 253.1 ± 2.6 h. The rotational light curve has an amplitude of 1.03 ± 0.03 mag, in agreement with an elongated asteroid. No signal of a secondary object is found in the residual fit <strong>at</strong> a limit of 0.2 mag. The colors <em>r</em> <span><math><mo>−</mo></math></span> <em>i</em> and <em>V</em> <span><math><mo>−</mo></math></span> <em>R</em> agree with a Cg-type asteroid for most of the phases analyzed. Some small variations in colors are found and they could be explained by some heterogeneity on Donaldjohanson’s surface. The angle between the spacecraft, Donaldjohanson, and the SOAR Telescope at the moment of the flyby was estimated to be 102 degrees. The results discussed here could serve as a reference and would support further analyses of the Lucy mission data. The comparison and combination of spacecraft and ground-based observations could allow the extension of the knowledge obtained here to an uncountable number of asteroids that will not have the opportunity to be visited by spacecraft.</div></div>","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116771"},"PeriodicalIF":3.0,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The diagnostic power of surface heat flow measurements at Europa 木卫二表面热流测量的诊断能力
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-20 DOI: 10.1016/j.icarus.2025.116785
Alyssa Rose Rhoden , Matthew E. Walker , Jianqing Feng , Matthew A. Siegler , Kathleen Craft
{"title":"The diagnostic power of surface heat flow measurements at Europa","authors":"Alyssa Rose Rhoden ,&nbsp;Matthew E. Walker ,&nbsp;Jianqing Feng ,&nbsp;Matthew A. Siegler ,&nbsp;Kathleen Craft","doi":"10.1016/j.icarus.2025.116785","DOIUrl":"10.1016/j.icarus.2025.116785","url":null,"abstract":"<div><div>Identifying ocean-bearing moons and characterizing the physical properties of their icy shells are critical investigations for the exploration of the outer solar system, with important implications for the geophysical evolution and potential habitability of the moons. However, the measurements needed to detect an ocean and constrain ice shell thickness can be challenging to obtain with remote sensing data collected from spacecraft, particularly through flybys. Recent work has shown that surface heat flow in an ocean-bearing moon may be sufficiently different from that of a frozen moon that measurements of surface heat flow could aid in ocean detection. Here, we move a step beyond previous work to investigate the extent to which measurements of surface heat flow can be used to constrain the ice shell thickness of a known ocean moon. We begin with a case study of Jupiter's moon, Europa, for which there is remote sensing data that can facilitate the investigation. We explore the behavior of a conductive ice shell with an Andrade rheology, compute location-dependent tidal heating rather than taking a global average, and utilize spacecraft measurements to account for spatially-variable surface temperatures. We also make the assumption that the ice shell is thermally stable over the timescales of human exploration. We find that patterns of surface heat flow can provide constraints on the thickness of an ice shell, and the relative contributions of basal heating and tidal heating, provided that the surface temperature is well-characterized. Hence, maps of surface temperature and heat flow from future missions would be valuable for detecting oceans and characterizing the physical properties of ice shells as well as preparing for sub-surface access missions for which knowledge of the ice shell environment is critical.</div></div>","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116785"},"PeriodicalIF":3.0,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144892814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Discovery of 63 new young asteroid families 发现了63个新的年轻小行星家族
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-19 DOI: 10.1016/j.icarus.2025.116768
David Nesvorný , David Vokrouhlický , Miroslav Brož , Fernando V. Roig
{"title":"Discovery of 63 new young asteroid families","authors":"David Nesvorný ,&nbsp;David Vokrouhlický ,&nbsp;Miroslav Brož ,&nbsp;Fernando V. Roig","doi":"10.1016/j.icarus.2025.116768","DOIUrl":"10.1016/j.icarus.2025.116768","url":null,"abstract":"<div><div>We searched for young asteroid families – those with ages <span><math><mrow><msub><mrow><mi>t</mi></mrow><mrow><mi>age</mi></mrow></msub><mo>&lt;</mo><mn>10</mn></mrow></math></span> Myr and at least three members – using the proper element catalog from Nesvorný et al. (2024a). Our approach employed the Hierarchical Clustering Method (HCM) in a five-dimensional space of proper orbital elements: semimajor axis, eccentricity, inclination, proper nodal longitude, and proper perihelion longitude. The proper longitudes were calculated for various times in the past. Any convergence of these angles at times <span><math><mrow><mi>t</mi><mo>&lt;</mo><mn>10</mn></mrow></math></span> Myr ago was automatically identified by our algorithm as a clustering event in 5D space at time <span><math><mi>t</mi></math></span>. Using this method, we successfully recovered all previously known young families (over 40) and discovered 63 additional ones. The formation ages of these families were determined through backward orbital integrations. To validate orbital convergence, we applied three different methods and obtained generally consistent results. Notably, the vast majority of identified young families have the formation ages <span><math><mrow><msub><mrow><mi>t</mi></mrow><mrow><mi>age</mi></mrow></msub><mo>≲</mo><mn>1</mn></mrow></math></span> Myr. The number and properties of these families provide valuable constraints on the frequency of recent large cratering or catastrophic collisions, offering new insights into the ongoing collisional evolution of the main asteroid belt. Alternatively, at least some of the families identified here could have been produced by the spin-up and rotational fission of their parent bodies. Future studies should address the relative importance of collisions and rotational fission for young asteroid families identified here.</div></div>","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116768"},"PeriodicalIF":3.0,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Atmospheric drivers of interannual variability from the northern hemisphere seasonal cap on Mars 火星上北半球季节帽的年际变化的大气驱动因素
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-19 DOI: 10.1016/j.icarus.2025.116786
Jacob M. Widmer , Serina Diniega , Mackenzie Day , Samuel F.A. Cartwright , Noora Alsaeed
{"title":"Atmospheric drivers of interannual variability from the northern hemisphere seasonal cap on Mars","authors":"Jacob M. Widmer ,&nbsp;Serina Diniega ,&nbsp;Mackenzie Day ,&nbsp;Samuel F.A. Cartwright ,&nbsp;Noora Alsaeed","doi":"10.1016/j.icarus.2025.116786","DOIUrl":"10.1016/j.icarus.2025.116786","url":null,"abstract":"<div><div>The seasonal exchange of volatiles (CO<sub>2</sub> and H<sub>2</sub>O) between the atmosphere and surface on Mars drives seasonal changes in the extent of ice at the poles. Interannual variability, or year to year changes, in the extent of seasonal ice have been observed, suggesting fluctuations in the processes that drive volatile exchange. In the northern hemisphere, previous studies have mapped seasonal frosts during the winter and spring months. However, a critical knowledge gap persists, namely multi-year records of seasonal frost extent that distinguish composition. In this work, we fill this gap, quantifying the interannual variability of seasonal frost extent for CO<sub>2</sub> and H<sub>2</sub>O across 6 Mars years. We identify the edges of seasonal CO<sub>2</sub> and H<sub>2</sub>O frost caps with binary ice mask products, derived from CRISM mapping-style observations taken during Mars Year 28–33. We find that the extent of CO<sub>2</sub> seasonal frost is fairly consistent between years, changing by ∼1.5° of global equivalent latitude, but the extent of H<sub>2</sub>O seasonal frost can change by ∼3.9° of global equivalent latitude. To identify potential drivers of the observed variations, we further compare our results with atmospheric measurements of dust, the position of the polar vortex, and water vapor availability. We find that neither the timing of atmospheric dust loading nor of polar vortex retreat fully explain the observed seasonal cap variability. However, the amount of available water vapor appears to be proportional to the extent of the H<sub>2</sub>O seasonal cap.</div></div>","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116786"},"PeriodicalIF":3.0,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biogeochemical study of the periglacial slopes of the Nevado del Ruíz volcano (Colombia) as a terrestrial analog of Mars 内华达德尔Ruíz火山(哥伦比亚)冰周斜坡的生物地球化学研究,作为火星的地球模拟物
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-18 DOI: 10.1016/j.icarus.2025.116783
M.A. Leal , D. Tovar , M.A. de Pablo , M.A. Bonilla , J. Bolaños , E. Ruíz , J. Sánchez , J. Buitrago , G. Leone , N. Tchegliakova , A. Molina , J. San Martín , Z. Chacón , X. Abrevaya , F. Vélez , A. Torres , R. Reyes , G. Cancino-Escalante , R. Acevedo-Barrios
{"title":"Biogeochemical study of the periglacial slopes of the Nevado del Ruíz volcano (Colombia) as a terrestrial analog of Mars","authors":"M.A. Leal ,&nbsp;D. Tovar ,&nbsp;M.A. de Pablo ,&nbsp;M.A. Bonilla ,&nbsp;J. Bolaños ,&nbsp;E. Ruíz ,&nbsp;J. Sánchez ,&nbsp;J. Buitrago ,&nbsp;G. Leone ,&nbsp;N. Tchegliakova ,&nbsp;A. Molina ,&nbsp;J. San Martín ,&nbsp;Z. Chacón ,&nbsp;X. Abrevaya ,&nbsp;F. Vélez ,&nbsp;A. Torres ,&nbsp;R. Reyes ,&nbsp;G. Cancino-Escalante ,&nbsp;R. Acevedo-Barrios","doi":"10.1016/j.icarus.2025.116783","DOIUrl":"10.1016/j.icarus.2025.116783","url":null,"abstract":"<div><div>The Refugio sector of the Nevado del Ruiz Volcano, located in Colombia, has been the focus of multidisciplinary exploration aimed at understanding its geology, geochemistry, mineralogy, and microbiology, with the objective of evaluating its relevance as a potential terrestrial analog of astrobiological interest for Mars. Through detailed physicochemical analyses of soil samples, variability in properties such as pH, electrical conductivity, and nutrient content has been characterized, revealing the diversity of microenvironments within this volcanic region. Comparison with analog samples from Mars, taken from the ISAR collection, has highlighted significant differences in geochemical composition, particularly in MnO, Fe₂O₃, and SiO₂ content, underscoring the importance of Nevado del Ruiz as a key site for studying Martian geological processes. Furthermore, CRISM spectroscopy analyses have confirmed the presence of minerals similar to those found in Mawrth Vallis on Mars, further supporting the site's validity as a terrestrial analog for planetary studies. Finally, the isolation of bacterial species identified as <em>Klebsiella spallanzanii</em> and <em>Bacillus cereus</em>, two oligotrophic and psychrophilic microorganisms, capable of phosphate solubilization and nitrogen fixation, found at Nevado del Ruiz support the development of biological models of astrobiological relevance. Together with the other findings, this evidence reinforces the importance of Nevado del Ruiz as a natural laboratory for astrobiology and space exploration, with the potential to provide information for future planetary exploration missions.</div></div>","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116783"},"PeriodicalIF":3.0,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144886482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Sublimation pressures of common volatiles at low temperature and maps of supervolatile cold traps on the Moon” [Icarus 416 (2024), 116086] “低温下常见挥发物的升华压力和月球上超挥发物冷阱图”的勘误表[伊卡洛斯416 (2024),116086]
IF 3 2区 物理与天体物理
Icarus Pub Date : 2025-08-18 DOI: 10.1016/j.icarus.2025.116784
Norbert Schörghofer , Jean-Pierre Williams
{"title":"Corrigendum to “Sublimation pressures of common volatiles at low temperature and maps of supervolatile cold traps on the Moon” [Icarus 416 (2024), 116086]","authors":"Norbert Schörghofer ,&nbsp;Jean-Pierre Williams","doi":"10.1016/j.icarus.2025.116784","DOIUrl":"10.1016/j.icarus.2025.116784","url":null,"abstract":"","PeriodicalId":13199,"journal":{"name":"Icarus","volume":"443 ","pages":"Article 116784"},"PeriodicalIF":3.0,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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