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2 p, 494.4 KB |
Observen meteors hiperbòlics produïts per la trobada de l'estrella Scholz amb el nostre sistema solar fa 80.000 anys
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Peña-Asensio, Eloy (Institut de Ciències de l'Espai) ;
Trigo Rodríguez, Josep Maria (Institut de Ciències de l'Espai) ;
Rimola, Albert (Universitat Autònoma de Barcelona. Departament de Química)
Investigadors de l'Institut de Ciències de l'Espai (ICE-CSIC) i col·laboradors de la Universitat d'Hèlsinki i l'Institut d'Astrofísica de Canàries, han analitzat la trajectòria del meteor FH1, desviada fa 80,000 anys per l'estrella binària Scholz i concloent el seu viatge en impactar amb la Terra a l'octubre de 2022. [...]
Investigadores del Instituto de Ciencias del Espacio (ICE-CSIC) y colaboradores de la Universidad de Helsinki y el Instituto de Astrofísica de Canarias, han analizado la trayectoria del meteoro FH1, desviada hace 80,000 años por la estrella binaria Scholz y concluyendo su viaje al impactar con la Tierra en 2022. [...]
2024
UAB divulga, Gener 2024, p. 1-2
2 documentos
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25 p, 4.6 MB |
Gas-Phase vs. Grain-Surface Formation of Interstellar Complex Organic Molecules : A Comprehensive Quantum-Chemical Study
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Martínez-Bachs, Berta (Universitat Autònoma de Barcelona. Departament de Química) ;
Rimola, Albert (Universitat Autònoma de Barcelona. Departament de Química)
Several organic chemical compounds (the so-called interstellar complex organic molecules, iCOMs) have been identified in the interstellar medium (ISM). Examples of iCOMs are formamide (HCONH), acetaldehyde (CHCHO), methyl formate (CHOCHO), or formic acid (HCOOH). [...]
2023 -  10.3390/ijms242316824
International journal of molecular sciences, Vol. 24, Num. 23 (November 2023) , art. 16824
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9 p, 1.5 MB |
Deep machine learning for meteor monitoring : Advances with transfer learning and gradient-weighted class activation mapping
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Peña-Asensio, Eloy (Universitat Autònoma de Barcelona. Departament de Química) ;
Trigo Rodríguez, Josep Maria (Institut de Ciències de l'Espai) ;
Grèbol-Tomàs, Pau (Institut de Ciències de l'Espai) ;
Regordosa-Avellana, David (Spanish Meteor Network) ;
Rimola, Albert (Universitat Autònoma de Barcelona. Departament de Química)
In recent decades, the use of optical detection systems for meteor studies has increased dramatically, resulting in huge amounts of data being analyzed. Automated meteor detection tools are essential for studying the continuous meteoroid incoming flux, recovering fresh meteorites, and achieving a better understanding of our Solar System. [...]
2023 - 10.1016/j.pss.2023.105802
Planetary and Space Science, Vol. 238 (November 2023) , art. 105802
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15 p, 2.9 MB |
Oort cloud perturbations as a source of hyperbolic Earth impactors
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Peña-Asensio, Eloy (Universitat Autònoma de Barcelona. Departament de Química) ;
Visuri, Jaakko (Ursa Astronomical Association) ;
Trigo Rodríguez, Josep Maria (Institut de Ciències de l'Espai) ;
Socas-Navarro, Hector (Universidad de La Laguna. Departamento de Astrofísica) ;
Gritsevich, Maria (University of Helsinki) ;
Siljama, Markku (Ursa Astronomical Association) ;
Rimola, Albert (Universitat Autònoma de Barcelona. Departament de Química)
The observation of interstellar objects 1I/'Oumuamua and 2I/Borisov suggests the existence of a larger population of smaller projectiles that impact our planet with unbound orbits. We analyze an asteroidal grazing meteor (FH1) recorded by the Finnish Fireball Network on October 23, 2022. [...]
2024 - 10.1016/j.icarus.2023.115844
Icarus, Vol. 408 (January 2024) , art. 115844
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7 p, 485.0 KB |
Formation of Complex Organic Molecules on Interstellar CO Ices? Insights from Computational Chemistry Simulations
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Ferrero, Stefano (Universitat Autònoma de Barcelona. Departament de Química) ;
Ceccarelli, Cecilia (Université Grenoble Alpes) ;
Ugliengo, Piero (Università degli Studi di Torino. Dipartimento di Chimica and Nanostructured Interfaces and Surfaces) ;
Sodupe Roure, Mariona (Universitat Autònoma de Barcelona. Departament de Química) ;
Rimola, Albert (Universitat Autònoma de Barcelona. Departament de Química)
The carbon (3P) atom is a reactive species that, according to laboratory experiments and theoretical calculations, condensates with interstellar ice components. This fact is of uttermost importance for the chemistry in the interstellar medium (ISM) because the condensation reaction is barrierless, and the subsequent species formed are still reactive given their open-shell character. [...]
2023 - 10.3847/1538-4357/acd192
The Astrophysical journal, Vol. 951, Issue 2 (July 2023) , art. 150
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42 p, 10.7 MB |
BCN-M : a free computational tool for generating Wulff-like nanoparticle models with controlled stoichiometry
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González, Danilo (Universitat Autònoma de Barcelona. Departament de Química) ;
Camino, Bruno (Universitat Autònoma de Barcelona. Departament de Química) ;
Heras-Domingo, Javier (Universitat Autònoma de Barcelona. Departament de Química) ;
Rimola, Albert (Universitat Autònoma de Barcelona. Departament de Química) ;
Rodríguez Santiago, Luis (Universitat Autònoma de Barcelona. Departament de Química) ;
Solans Monfort, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ;
Sodupe Roure, Mariona (Universitat Autònoma de Barcelona. Departament de Química)
A thorough knowledge of the atomic structure of nanomaterials is of high importance to understand their properties. This requires developing nanoparticle models, which is not always straightforward, particularly in the case of nonpure metallic systems. [...]
2020 - 10.1021/acs.jpcc.9b10506
Journal of physical chemistry. C, Vol. 124, issue 1 (Jan. 2020) , p. 1227-1237
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17 p, 2.9 MB |
V. Hot methanol in the [BHB2007] 11 protobinary system; Hot corino versus shock origin
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Vastel, C. (Université de Toulouse) ;
Alves, F. (Université Grenoble Alpes) ;
Ceccarelli, Cecilia (Université Grenoble Alpes) ;
Bouvier, M. (Université Grenoble Alpes) ;
Jiménez-Serra, I. (Centro de Astrobiología (Madrid)) ;
Sakai, T. (University of Electro-Communications) ;
Caselli, P. (Max Planck Institute for Extraterrestrial Physics) ;
Evans, L. (Université de Toulouse) ;
Fontani, F. (Osservatorio Astrofisico Di Arcetri) ;
Le Gal, R. (Institute for Planetary sciences and Astrophysics) ;
Chandler, C. J. (National Radio Astronomy Observatory Socorro) ;
Svoboda, B. (National Radio Astronomy Observatory Socorro) ;
Maud, L. (ESO Supernova Planetarium & Visitor Centre) ;
Codella, Claudio (Institute for Planetary sciences and Astrophysics) ;
Sakai, N. (RIKEN) ;
López-Sepulcre, A. (Institute for Planetary sciences and Astrophysics) ;
Moellenbrock, G. (National Radio Astronomy Observatory Socorro) ;
Aikawa, Y. (The University of Tokyo) ;
Balucani, Nadia (Università degli studi di Perugia) ;
Bianchi, E. (Institute for Planetary sciences and Astrophysics) ;
Busquet, G. (Universitat de Barcelona) ;
Caux, E. (Université de Toulouse) ;
Charnley, S. (NASA Goddard Space Flight Center) ;
Cuello, N. (Institute for Planetary sciences and Astrophysics) ;
De Simone, M. (Institute for Planetary sciences and Astrophysics) ;
Dulieu, F. (CY Cergy Paris Université) ;
Durán, A. (Instituto de Radioastronomía y Astrofísica) ;
Fedele, D. (Osservatorio Astrofisico Di Arcetri) ;
Feng, S. (Xiamen University) ;
Francis, L. (University of Victoria BC) ;
Hama, T. (The University of Tokyo) ;
Hanawa, T. (Chiba University. Center for Frontier Science) ;
Herbst, E. (University of Virginia) ;
Hirota, T. (National Astronomical Observatories) ;
Imai, M. (The University of Tokyo) ;
Isella, A. (Rice University) ;
Johnstone, D. (University of Victoria BC) ;
Lefloch, B. (Institute for Planetary sciences and Astrophysics) ;
Loinard, L. (Universidad Nacional Autónoma de México. Instituto de Radioastronomía y Astrofísica) ;
Maureira, M. (Max Planck Institute for Extraterrestrial Physics) ;
Murillo, N. M. (RIKEN) ;
Mercimek, S. (Osservatorio Astrofisico Di Arcetri) ;
Mori, S. (Tohoku University) ;
Menard, F. (Institute for Planetary sciences and Astrophysics) ;
Miotello, A. (ESO Supernova Planetarium & Visitor Centre) ;
Nakatani, R. (RIKEN) ;
Nomura, H. (Chinese Academy of Sciences) ;
Oba, Y. (Hokkaido University) ;
Ohashi, S. (RIKEN) ;
Okoda, Y. (The University of Tokyo) ;
Ospina-Zamudio, J. (Institute for Planetary sciences and Astrophysics) ;
Oya, Y. (The University of Tokyo) ;
Pineda, J. E. (Max Planck Institute for Extraterrestrial Physics) ;
Podio, L. (Osservatorio Astrofisico Di Arcetri) ;
Rimola, Albert (Universitat Autònoma de Barcelona. Departament de Química) ;
Cox, D. Segura (Max Planck Institute for Extraterrestrial Physics) ;
Shirley, Y. (University of Arizona) ;
Testi, L. (Osservatorio Astrofisico Di Arcetri) ;
Viti, S. (University of Leiden) ;
Watanabe, N. (Hokkaido University) ;
Watanabe, Y. (Shibaura Institute of Technology) ;
Witzel, A. (Institute for Planetary sciences and Astrophysics) ;
Xue, C. (University of Virginia) ;
Zhang, Y. (RIKEN) ;
Zhao, B. (Max Planck Institute for Extraterrestrial Physics) ;
Yamamoto, S. (The University of Tokyo)
Aims. Methanol is a ubiquitous species commonly found in the molecular interstellar medium. It is also a crucial seed species for the build-up of chemical complexity in star forming regions. Thus, understanding how its abundance evolves during the star formation process and whether it enriches the emerging planetary system is of paramount importance. [...]
2022 - 10.1051/0004-6361/202243414
Astronomy & astrophysics, Vol. 664 (August 2022) , art. A171
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17 p, 1.7 MB |
Binding energies of interstellar relevant S-bearing species on water ice mantles : a quantum mechanical investigation
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Perrero, Jessica (Universitat Autònoma de Barcelona. Departament de Química) ;
Enrique-Romero, Joan (Universitat Autònoma de Barcelona. Departament de Química) ;
Ferrero, Stefano (Universitat Autònoma de Barcelona. Departament de Química) ;
Ceccarelli, Cecilia (Centre National de la Recherche Scientifique. Université Grenoble Alpes. Institut de Planétologie et d'Astrophysique de Grenoble) ;
Podio, Linda (Istituto Nazionale di Astrofisica. Osservatorio Astrofisico di Arcetri) ;
Codella, Claudio (Istituto Nazionale di Astrofisica. Osservatorio Astrofisico di Arcetri) ;
Rimola, Albert (Universitat Autònoma de Barcelona. Departament de Química) ;
Ugliengo, Piero (Università degli Studi di Torino. Dipartimento di Chimica)
Binding energies (BEs) are one of the most important parameters for astrochemical modeling determining, because they govern whether a species stays in the gas phase or is frozen on the grain surfaces. [...]
2022 - 10.3847/1538-4357/ac9278
The Astrophysical journal, Vol. 938, Issue 2 (October 2022) , art. 158
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