Article
Geology
J. M. Davis, P. M. Grindrod, S. G. Banham, N. H. Warner, S. J. Conway, S. J. Boazman, S. Gupta
Summary: This study characterizes sediment fan deposits associated with syn-tectonic sedimentation on Mars using high-resolution orbital data sets. The results demonstrate a link between depositional cyclicity and tectonic deformation, possibly representing regional processes within Valles Marineris.
Article
Astronomy & Astrophysics
N. Milanovic, L. P. Chitta, H. Peter
Summary: This study aims to investigate the magnetic nature of the solar corona, particularly its footpoints in the lower atmosphere, along with the associated diffuse EUV and X-ray ambient emission. The researchers found a connection between the diffuse emission region and long-ranging magnetic loops, suggesting the influence of heating factors.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Javier Roman, Michael G. Jones, Mireia Montes, Lourdes Verdes-Montenegro, Julian Garrido, Susana Sanchez
Summary: This study explores the properties of a peculiar object at the tip of an H i tail from Hickson Compact Group 16, determining its stellar age and metallicity through multiband photometry. The object, structurally similar to diffuse galaxies, will fade over approximately 2 billion years of evolution, becoming undetectable in optical observations. Its high hydrogen mass and future undetectable stellar component will align it with the properties of dark galaxies, emphasizing the impact of stellar fading in hiding aged stellar components in high metallicity systems like tidal dwarfs.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Multidisciplinary Sciences
Kurosh Karimi, Gunther Kletetschka, Verena Meier
Summary: This study investigates the gravitational properties of Earth and Venus. By considering spherical harmonic series up to a degree and order of 100, various aspects of topography and gravity, including l(zz), strike alignment, comb factor, and l(2) invariant, were calculated for selected zones on both planets. The results reveal that the N-NW edge of Lakshmi Planum on Venus exhibits passive continental margins similar to those surrounding the Indian Peninsula on Earth. The deformation level on Earth's Pacific and Philippine-North American Contact Zone, as indicated by SA and CF, is significantly higher due to convergent motion of tectonic plates, whereas on Venus, the deformation level is smaller and localized, particularly in the equatorial rifting zone (ERZ) between Atla-Beta Regios. The strain mode of the East African Rift system is smaller compared to its Venusian analog, ERZ. Additionally, the topography analysis suggests a complex nature of the topographic rise on Beta Regio, with regions displaying incipient upward motion, molten and less dense underlying crustal materials, and elevated districts associated with mantle plumes and volcanic activities.
SCIENTIFIC REPORTS
(2023)
Article
Astronomy & Astrophysics
Nina Kopacz, Joleen Csuka, Mickael Baque, Iaroslav Iakubivskyi, Hrefna Gudlaugardottir, Ingeborg J. Klarenberg, Mahid Ahmed, Alexandra Zetterlind, Abhijeet Singh, Inge Loes ten Kate, Eric Hellebrand, Brent R. Stockwell, Arni B. Stefansson, Oddur Vilhelmsson, Anna Neubeck, Anna Schnurer, Wolf Geppert
Summary: Lava tubes on Mars have the potential to preserve life and biosignatures, and studying their Earth counterparts in Iceland can provide valuable insights. By analyzing biological, molecular, and mineralogical data from Icelandic lava tubes, researchers discovered copper-rich minerals and bacterial communities that show characteristics expected for potential life on Mars. These findings have implications for future Mars missions and contamination prevention.
EARTH AND SPACE SCIENCE
(2022)
Article
Geochemistry & Geophysics
Yan Chen, Jianxun Shen, Li Liu, Yu Sun, Yongxin Pan, Wei Lin
Summary: The distribution of organic carbon in the Qaidam Basin is influenced by landform, moisture, and sedimentary origin. The extremely dry northwestern Qaidam has low organic carbon contents, suggesting low rates of microbial carbon input and organic carbon degradation in Mars-like environments. Aqueous deposits show high organic carbon contents and rivers indicate the preservation of relic organic matter. Soils from the distal alluvial fan are promising candidate targets for biosignature detection on Mars.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2022)
Article
Astronomy & Astrophysics
E. Kosmaczewski, L. Stawarz, C. C. Cheung, A. Bamba, A. Karska, W. R. M. Rocha
Summary: This study analyzes multiwavelength observations of dark globule DC 314.8-5.1 and finds no pre-main-sequence stars or young stellar objects associated with the globule. Additionally, the presence of hot dust and a reflection nebula is identified.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Marta Reina-Campos, Sebastian Trujillo-Gomez, Joel L. Pfeffer, Alison Sills, Alis J. Deason, Robert A. Crain, J. M. Diederik Kruijssen
Summary: We investigate the use of diffuse stellar light and globular clusters (GCs) to trace the matter distribution in host haloes. Our study utilizes 117 simulated dark matter (DM) haloes from the E-MOSAICS project and compares the surface brightness and number density maps of stars and GCs to that of DM. We find that the structures in stellar light and GCs closely match those of DM, providing an accurate means to recover the profile of DM.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Guichun Wu, Zhansheng Ji, Gary G. Lash, Jianxin Yao
Summary: Research on the Bangong-Nujiang Suture Zone (BNSZ) of Tibet reveals that the Lhasa and South Qiangtang terranes were contiguous in the Triassic period, disproving the existence of a terrane-separating ocean in the region. Abundant Upper Triassic sediments were found in the west BNSZ, confirming the presence of Triassic deposits in the area. Similar Late Triassic stratigraphies in different regions suggest a shared depositional setting, indicating that the BNSZ was not an ocean in Norian and Rhaetian time.
SCIENTIFIC REPORTS
(2021)
Article
Astronomy & Astrophysics
Haiyang Yu, Ming Zhu, Jin-Long Xu, Mei Ai, Peng Jiang, Yanbin Yang
Summary: We observed the classical interacting galaxy M51 with FAST and obtained high-sensitivity H i image. Several new tidal features and a diffuse extended envelope around the system are observed. The Northwest Cloud appears to be the tail of M51a and the Northwest Plume is likely a tidal tail of M51b. The novel tidal features and probable gas of M51b will contribute to a deeper understanding of the system's evolution.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Hongji Xiao, Shenglong Luo, Jinhan Gao, Genhou Wang
Summary: The Jurassic sequences in the South Qiangtang Basin of Tibet play a crucial role in understanding the paleogeography and tectonic evolution of the basin and the BNMO. This study focuses on the Late Triassic bivalves found in olistostromes from the Sewa Formation and provides insights into the stratigraphic distribution and tectonic paleogeography of the basin. Through detailed geological surveys and sedimentary facies analysis, the researchers reassign the strata to the Sewa Formation and Shaqiaomu Formation, shedding light on the sedimentary infill history of the South Qiangtang Basin and supporting the idea of the BNMO being open in the Late Triassic and forming a mature ocean in the Early-Middle Jurassic.
SCIENTIFIC REPORTS
(2022)
Article
Energy & Fuels
Vadim Aleksandrovich Grishchenko, Vyacheslav Sharifullovich Mukhametshin, Ruslan Uralovich Rabaev
Summary: This study explores the problems associated with the development of carbonate deposits and presents a methodology to increase the efficiency of reserve recovery. The results indicate that secondary transformation of reservoir rocks and structural factors play a significant role in determining the development efficiency.
Article
Chemistry, Medicinal
Kuei-Hung Lai, Yu-Chen Fan, Bo-Rong Peng, Zhi-Hong Wen, Hsu-Ming Chung
Summary: Seven capnellenes derived from Capnella imbricata were discovered, including three previously unknown compounds. The structures of these compounds were determined through spectroscopic analysis and comparison with literature data. The compounds showed promising anti-inflammatory activity, with capnellenes 2 and 5 demonstrating significant reductions in iNOS levels and capnellenes 1, 5, and 7 exhibiting inhibitions against COX-2 protein expressions. Oxygen-bearing functionalities at C-8 and C-10 were found to play critical roles in inhibiting iNOS protein induction. Principal component analysis confirmed these capnellane-based sesquiterpenes as potential anti-inflammatory agents targeting iNOS-related targets.
Article
Astronomy & Astrophysics
Sownak Bose, Abraham Loeb
Summary: Using simulations of galaxy formation, researchers measured velocity dispersion profiles of dark matter and stars in different scale dark matter halos, finding similar shapes with significant scatter. They identified the splashback radius marking the outer boundary of the halo, and attributed the scatter in dispersion profiles to assembly history of host halos. A two-parameter model was used to fit velocity dispersion profiles, directly related to halo properties.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
Sebastian Trujillo-Gomez, J. M. Diederik Kruijssen, Marta Reina-Campos
Summary: This study investigates the structural evolution of ultra-diffuse galaxies (UDGs) and discovers that feedback from massive star clusters causes the expansion of their stellar component and loss of dark matter. The model also explains the observation of galaxies containing nearly the universal baryon fraction and UDGs almost devoid of dark matter.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Review
Geography, Physical
Mikhail A. Kreslavsly, Nataliya V. Bondarenko
Article
Astronomy & Astrophysics
Nataliya V. Bondarenko, Mikhail A. Kreslaysky
Article
Chemistry, Medicinal
G. P. Mrug, N. V. Bondarenko, S. P. Bondarenko, M. S. Frasinyuk
CHEMISTRY OF NATURAL COMPOUNDS
(2018)
Article
Geosciences, Multidisciplinary
N. V. Bondarenko, J. W. Head, M. A. Ivanov
GEOPHYSICAL RESEARCH LETTERS
(2010)
Article
Mathematics
N. V. Bondarenko, C. K. Gupta, V. I. Sushchansky
JOURNAL OF ALGEBRA
(2010)
Article
Automation & Control Systems
E. V. Grigorieva, N. V. Bondarenko, E. N. Khailov
JOURNAL OF DYNAMICAL AND CONTROL SYSTEMS
(2015)
Article
Astronomy & Astrophysics
N. V. Bondarenko, I. A. Dulova, Yu V. Kornienko
SOLAR SYSTEM RESEARCH
(2014)
Article
Astronomy & Astrophysics
A. T. Basilevsky, E. Shalygin, N. Bondarenko, O. S. Shalygina, W. J. Markiewicz
Article
Environmental Sciences
Irina P. Komarova, Nataliya E. Bondarenko, Roman V. Gubarev, Sergey A. Ermolaev
Summary: This article analyzes the international experience in the trading system for greenhouse gas emissions permits, discusses the issues faced by Russia in its carbon markets and climate policy implementation, and proposes measures and prerequisites for establishing an efficient Russian system of emissions trading.
INTERNATIONAL JOURNAL OF ECOSYSTEMS AND ECOLOGY SCIENCE-IJEES
(2022)
Article
Geochemistry & Geophysics
NV Bondarenko, MA Kreslavsky, JW Head
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2006)
Article
Geochemistry & Geophysics
NV Bondarenko, JW Head
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2004)
Article
Geochemistry & Geophysics
NV Bondarenko, MA Kreslavsky, J Raitala
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2003)
Article
Astronomy & Astrophysics
YG Shkuratov, NV Bondarenko
Article
Astronomy & Astrophysics
YG Shkuratov, NV Bondarenko