Nature Astronomy最新文献_第2页

Andromeda’s asymmetric satellite system as a challenge to cold dark matter cosmology

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-04-11 DOI: 10.1038/s41550-025-02480-3

Kosuke Jamie Kanehisa, Marcel S. Pawlowski, Noam Libeskind

引用次数: 0

Robert Kurucz (1944–2025)

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-04-10 DOI: 10.1038/s41550-025-02535-5

Andrea Dupree, Charlie Conroy

引用次数: 0

Provenance and evolution of lunar regolith at the Chang’e-6 sampling site

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-04-07 DOI: 10.1038/s41550-025-02525-7

Mingwei Zhang, Wenzhe Fa, Bojun Jia

{"title":"Provenance and evolution of lunar regolith at the Chang’e-6 sampling site","authors":"Mingwei Zhang, Wenzhe Fa, Bojun Jia","doi":"10.1038/s41550-025-02525-7","DOIUrl":"https://doi.org/10.1038/s41550-025-02525-7","url":null,"abstract":"China’s Chang’e-6 (CE-6) mission successfully returned the first lunar samples from the South Pole–Aitken basin on the Moon’s farside. Determining the provenance and evolution of the samples will play a crucial role in guiding effective laboratory analyses. Here we conduct a comprehensive search for source impact craters of the CE-6 samples on global, regional and local scales, and systematically model the formation, migration, mixing and maturation of regolith in the landing region driven by continuous bombardment and solar wind irradiation. A catalogue of 1,674 major source craters with ejecta source depths of up to 3 km was established, which cumulatively delivered materials 53.4 ± 15.7 cm thick to the CE-6 landing site. The returned samples are estimated to comprise ~93.3% local basalts, 6.1% South Pole–Aitken basin materials that are likely to contain mantle components and 0.6% highland feldspathic materials from outside the South Pole–Aitken basin. Modelled elemental abundance depth profiles show that the exotic materials are primarily concentrated at depths of 2.5–3 m, with a portion within the sampling depth of 1 m. The estimated exposure time in the top 1 mm is ({2.1}_{-0.9}^{+1.1},{rm{Myr}}) for the surficial scooped samples and shorter for deeper drilled samples. These findings establish a crucial foundation for CE-6 sample analysis and interpretation, offering key insights into the provenance of exotic materials and the space weathering process on the Moon’s farside.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"6 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 new rotation period and longitude system for Uranus

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-04-07 DOI: 10.1038/s41550-025-02492-z

L. Lamy, R. Prangé, J. Berthier, C. Tao, T. Kim, L. Roth, M. Barthélémy, J.-Y. Chaufray, A. Rymer, W. R. Dunn, A. D. Wibisono, H. Melin

{"title":"A new rotation period and longitude system for Uranus","authors":"L. Lamy, R. Prangé, J. Berthier, C. Tao, T. Kim, L. Roth, M. Barthélémy, J.-Y. Chaufray, A. Rymer, W. R. Dunn, A. D. Wibisono, H. Melin","doi":"10.1038/s41550-025-02492-z","DOIUrl":"https://doi.org/10.1038/s41550-025-02492-z","url":null,"abstract":"The rotation period of Uranus was estimated to be 17.24 ± 0.01 h in 1986 from radio auroral measurements during the brief Voyager 2 flyby. This value is the basis for the Uranian SIII longitude system still in use. However, the poor period uncertainty limited its validity to a few years, after which the orientation of the magnetic axis was lost. Alternate, conflicting, rotation periods have also been proposed since then. Here we use the long-term tracking of Uranus’ magnetic poles between 2011 and 2022 from Hubble Space Telescope images of its ultraviolet aurorae to achieve an updated, independent, extremely precise rotation period of 17.247864 ± 0.000010 h, only consistent with the Voyager 2 estimate. Its 28-s-longer value and improved accuracy yields a new longitude model now valid over decades, up to the arrival of any future Uranus mission, which will allow the reanalysis of the whole set of Uranus observations. In addition, it has strong direct implications for formation scenarios, interior models, dynamo theories and studies of the magnetosphere. This approach stands as a new method to determine the rotation rate of any object hosting a magnetosphere and a rotationally modulated aurorae, in our Solar System and beyond.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"25 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 super-Chandrasekhar mass type Ia supernova progenitor at 49 pc set to detonate in 23 Gyr 位于 49 pc 的超钱德拉塞卡质量 Ia 型超新星祖星将在 23 Gyr 内爆炸

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-04-04 DOI: 10.1038/s41550-025-02528-4

James Munday, Ruediger Pakmor, Ingrid Pelisoli, David Jones, Snehalata Sahu, Pier-Emmanuel Tremblay, Abinaya Swaruba Rajamuthukumar, Gijs Nelemans, Mark Magee, Silvia Toonen, Antoine Bédard, Tim Cunningham

{"title":"A super-Chandrasekhar mass type Ia supernova progenitor at 49 pc set to detonate in 23 Gyr","authors":"James Munday, Ruediger Pakmor, Ingrid Pelisoli, David Jones, Snehalata Sahu, Pier-Emmanuel Tremblay, Abinaya Swaruba Rajamuthukumar, Gijs Nelemans, Mark Magee, Silvia Toonen, Antoine Bédard, Tim Cunningham","doi":"10.1038/s41550-025-02528-4","DOIUrl":"https://doi.org/10.1038/s41550-025-02528-4","url":null,"abstract":"Double white dwarf binaries are a leading explanation of the origin of type Ia supernovae, but no system exceeding the Chandrasekhar mass limit (1.4 M⊙) has been found that will explode anywhere close to a Hubble time. Here we present the super-Chandrasekhar mass double white dwarf WDJ181058.67+311940.94 whose merger time (22.6 ± 1.0 Gyr) is of the same order as a Hubble time. The mass of the binary is large, combining to 1.555 ± 0.044 M⊙, while being located only 49 pc away. We predict that the binary will explode dynamically by means of a double detonation that will destroy both stars just before they merge, appearing as a subluminous type Ia supernova with a peak apparent magnitude of about mV = −16 (200,000 times brighter than Jupiter). The observationally derived birth rate of super-Chandrasekhar mass double white dwarfs is now at least 6.0 × 10−4 yr−1 and the observed rate of type Ia supernovae in the Milky Way from such systems is approximately 4.4 × 10−5 yr−1, whereas the predicted type Ia supernova rate in the Milky Way from all progenitor channels is about sixty times larger. Hence, WDJ181058.67+311940.94 mitigates the observed deficit of massive double white dwarfs witnessed in volume-complete populations, but further evidence is required to determine the majority progenitors of type Ia supernovae.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"58 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143775703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Evidence of the fast acceleration of AGN-driven winds at kiloparsec scales

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-31 DOI: 10.1038/s41550-025-02518-6

Cosimo Marconcini, Alessandro Marconi, Giovanni Cresci, Filippo Mannucci, Lorenzo Ulivi, Giacomo Venturi, Martina Scialpi, Giulia Tozzi, Francesco Belfiore, Elena Bertola, Stefano Carniani, Elisa Cataldi, Avinanda Chakraborty, Quirino D’Amato, Enrico Di Teodoro, Anna Feltre, Michele Ginolfi, Bianca Moreschini, Nicole Orientale, Bartolomeo Trefoloni, Andrew King

{"title":"Evidence of the fast acceleration of AGN-driven winds at kiloparsec scales","authors":"Cosimo Marconcini, Alessandro Marconi, Giovanni Cresci, Filippo Mannucci, Lorenzo Ulivi, Giacomo Venturi, Martina Scialpi, Giulia Tozzi, Francesco Belfiore, Elena Bertola, Stefano Carniani, Elisa Cataldi, Avinanda Chakraborty, Quirino D’Amato, Enrico Di Teodoro, Anna Feltre, Michele Ginolfi, Bianca Moreschini, Nicole Orientale, Bartolomeo Trefoloni, Andrew King","doi":"10.1038/s41550-025-02518-6","DOIUrl":"https://doi.org/10.1038/s41550-025-02518-6","url":null,"abstract":"Supermassive black holes at the centres of galaxies gain mass through accretion disks. Different models predict that quasi-spherical winds, expelled by black holes during accretion, have a key role in galaxy evolution through regulating star formation and the distribution of metals over kiloparsec scales and sweeping ambient gas to the outskirts of galaxies. Nonetheless, the mechanism that drives these outflows and the amount of energy exchanged between the wind and the galaxy’s interstellar medium remain unclear. Here we analyse the kinematic properties of these winds in a sample of nearby active galaxies using the MOKA3D model, which reproduces the clumpy nature of the interstellar medium. We provide evidence that outflows exhibit a regular radial velocity trend—initially constant or slightly decreasing, followed by rapid acceleration starting at approximately 1 kpc from the nucleus—despite the seemingly complex kinematics. The observed behaviour is consistent with current theoretical understanding of active galactic nucleus outflows, where a momentum-driven phase transitions to an energy-conserving phase beyond 1 kpc. The constant velocity of the momentum-driven wind is then rapidly accelerated following inefficient Compton cooling of post-shock material. The measured radial terminal velocities of the outflows are larger than the escape velocities from the host galaxies, confirming the role of outflows in shaping galaxy evolution as a manifestation of active galactic nucleus feedback.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"16 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

An interference-based method for the detection of strongly lensed gravitational waves

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-31 DOI: 10.1038/s41550-025-02519-5

Xikai Shan, Bin Hu, Xuechun Chen, Rong-Gen Cai

{"title":"An interference-based method for the detection of strongly lensed gravitational waves","authors":"Xikai Shan, Bin Hu, Xuechun Chen, Rong-Gen Cai","doi":"10.1038/s41550-025-02519-5","DOIUrl":"https://doi.org/10.1038/s41550-025-02519-5","url":null,"abstract":"The strongly lensed gravitational wave (SLGW) is a promising transient phenomenon. However, the long-wave nature of gravitational waves poses a considerable challenge in the identification of its host galaxy. Here, to tackle this challenge, we propose a method triggered by the wave optics effect of microlensing. The microlensing interference introduces frequency-dependent fluctuations in the waveform. Our method consists of three steps. First, we reconstruct the waveforms by using template-independent and template-dependent methods. The mismatch of two reconstructions serves as an indicator of SLGWs. This step can identify approximately 10% SLGWs. Second, we pair the multiple images of the SLGWs by using sky localization overlapping. Because we have preidentified at least one image through microlensing, the false-alarm probability for pairing SLGWs is significantly reduced. Third, we search the host galaxy by requiring the consistency of time delays between galaxy–galaxy lensing and SLGW. By combing the stage-IV galaxy survey and the third-generation gravitational wave detectors, we expect to find, on average, one quadruple-image system per 3 years. This method can substantially facilitate the pursuit of time-delay cosmography, discovery of compact objects and multimessenger astronomy.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"2 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 $${{bf{H}}}_{mathbf{3}}^{mathbf{+}}$$ and infrared aurorae at Neptune with JWST

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-26 DOI: 10.1038/s41550-025-02507-9

Henrik Melin, Luke Moore, Leigh N. Fletcher, Heidi B. Hammel, James O’Donoghue, Tom S. Stallard, Stephanie N. Milam, Michael Roman, Oliver R. T. King, Naomi Rowe-Gurney, Emma E. Thomas, Ruoyan Wang, Paola I. Tiranti, Jake Harkett, Katie L. Knowles

引用次数: 0

Subaru’s newest spectrometer with thousands of eyes

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-25 DOI: 10.1038/s41550-025-02515-9

Naoyuki Tamura

引用次数: 0

Cospatial ice mapping of H2O with CO2 and CO across a molecular cloud with JWST/NIRCam

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-24 DOI: 10.1038/s41550-025-02511-z

Z. L. Smith, H. J. Dickinson, H. J. Fraser, M. K. McClure, J. A. Noble, A. C. A. Boogert, F. Sun, E. Egami, E. Dartois, J. Erkal, T. Shimonishi, T. L. Beck, J. B. Bergner, P. Caselli, S. B. Charnley, L. Chu, M. N. Drozdovskaya, R. Garrod, D. Harsono, S. Ioppolo, I. Jimenez-Serra, J. K. Jørgensen, G. J. Melnick, K. I. Öberg, M. E. Palumbo, Y. J. Pendleton, G. Perotti, K. M. Pontoppidan, D. Qasim, W. R. M. Rocha, J. A. Sturm, A. Taillard, R. G. Urso, E. F. van Dishoeck

{"title":"Cospatial ice mapping of H2O with CO2 and CO across a molecular cloud with JWST/NIRCam","authors":"Z. L. Smith, H. J. Dickinson, H. J. Fraser, M. K. McClure, J. A. Noble, A. C. A. Boogert, F. Sun, E. Egami, E. Dartois, J. Erkal, T. Shimonishi, T. L. Beck, J. B. Bergner, P. Caselli, S. B. Charnley, L. Chu, M. N. Drozdovskaya, R. Garrod, D. Harsono, S. Ioppolo, I. Jimenez-Serra, J. K. Jørgensen, G. J. Melnick, K. I. Öberg, M. E. Palumbo, Y. J. Pendleton, G. Perotti, K. M. Pontoppidan, D. Qasim, W. R. M. Rocha, J. A. Sturm, A. Taillard, R. G. Urso, E. F. van Dishoeck","doi":"10.1038/s41550-025-02511-z","DOIUrl":"https://doi.org/10.1038/s41550-025-02511-z","url":null,"abstract":"In the coldest regions of molecular clouds, carbon and oxygen are incorporated into icy dust grains. Despite its outsized role in star and planet formation, sequential formation of ice is poorly constrained. Infrared spectroscopy probes ice chemistry, but previous telescopes observed insufficient lines of sight to map a single cloud. Here we present cospatial maps of H2O, CO2 and CO ice over the central region of the Chamaeleon I molecular cloud, using 44 lines of sight observed with the James Webb Space Telescope. Correlations at column densities ten times larger than previous work suggest additional CO2 ice formation in CO ice for the densest lines of sight. This large statistical sampling within a single cloud represents a step change in ice mapping, eliminating averaging over clouds with different intrinsic chemical environments. Mapping opens the door to probing gas–grain exchanges, snow lines and chemical evolution in the densest regions and drawing conclusions on the impact of ice chemistry on wider astrophysics.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"32 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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