Nature Astronomy最新文献_第6页

Mapping of an early quenched massive galaxy and its neighbourhood 一个早期熄灭的大质量星系及其邻近星系的地图

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-21 DOI: 10.1038/s41550-025-02587-7

引用次数: 0

Building trust in peer review 在同行评议中建立信任

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-18 DOI: 10.1038/s41550-025-02620-9

引用次数: 0

A call to address humanity’s cosmic footprint 呼吁解决人类在宇宙中的足迹

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-18 DOI: 10.1038/s41550-025-02606-7

Adrien Normier, Asmaa Boujibar, David Boulesteix, Oskari Sivula, Ian A. Crawford, Claudius Gros, Charles Horikami, Koji Tachibana, Raushan Ali Firaq, Valentin Degrange, Noemi Giammichele, Pierre Léna, Noémie Mazaré, Claude Nicollier, George Profitiliotis, Enock Rutunda, Douglas Vakoch

引用次数: 0

A portrait of Einstein as an engaged citizen 爱因斯坦作为一个积极参与的公民的肖像

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-18 DOI: 10.1038/s41550-025-02613-8

Urmila Chadayammuri

引用次数: 0

Why wide Jupiter-mass binary objects cannot form 为什么宽木星质量的双星不能形成

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-18 DOI: 10.1038/s41550-025-02609-4

Simon Portegies Zwart, Erwan Hochart

引用次数: 0

A network of velocity-coherent filaments formed by supersonic turbulence in a very-high-velocity H i cloud 超高速H云中由超音速湍流形成的速度相干细丝网

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-16 DOI: 10.1038/s41550-025-02605-8

Xunchuan Liu, Tie Liu, Pak-Shing Li, Xiaofeng Mai, Christian Henkel, Paul F. Goldsmith, Sheng-Li Qin, Yan Gong, Xing Lu, Fengwei Xu, Qiuyi Luo, Hong-Li Liu, Tianwei Zhang, Yu Cheng, Yihuan Di, Yuefang Wu, Qilao Gu, Ningyu Tang, Aiyuan Yang, Zhiqiang Shen

{"title":"A network of velocity-coherent filaments formed by supersonic turbulence in a very-high-velocity H i cloud","authors":"Xunchuan Liu, Tie Liu, Pak-Shing Li, Xiaofeng Mai, Christian Henkel, Paul F. Goldsmith, Sheng-Li Qin, Yan Gong, Xing Lu, Fengwei Xu, Qiuyi Luo, Hong-Li Liu, Tianwei Zhang, Yu Cheng, Yihuan Di, Yuefang Wu, Qilao Gu, Ningyu Tang, Aiyuan Yang, Zhiqiang Shen","doi":"10.1038/s41550-025-02605-8","DOIUrl":"10.1038/s41550-025-02605-8","url":null,"abstract":"The warm neutral medium (WNM) was thought to be subsonically/transonically turbulent, and it lacks a network of intertwined filaments that are commonly seen in both molecular clouds and the cold neutral medium. We report H i 21-cm-line observations of a very-high-velocity (−330 km s−1 < VLSR < −250 km s−1) cloud (VHVC), using the Five-Hundred-Meter Aperture Spherical Radio Telescope (FAST), with very high resolution and sensitivity. Such a VHVC is here clearly revealed to be a supersonic WNM system consisting of a network of velocity-coherent H i filaments. The filaments are in the forms of slim curves, hubs and webs, distributed in different layers within the position–position–velocity (ppv) data cube. The entire cloud has skewed lognormal probability distribution of column density and the filaments themselves show asymmetrical radial density profiles, indicating shock compression by supersonic magnetohydrodynamic (MHD) turbulence, as is also confirmed by our MHD simulation (sonic Mach number Ms = 3 and Alfvén Mach number MA = 1). This suggests that hierarchical filaments can be established by shocks in a low-density WNM, where gravity is negligible, offering a viable pathway to structure formation in the earliest evolutionary phases of the interstellar medium. High-resolution FAST observations of a very-high-velocity cloud in the warm neutral medium reveal a network of hierarchical filaments formed by shock compression. These findings suggest a viable mechanism for early structure formation in the interstellar medium.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 9","pages":"1366-1374"},"PeriodicalIF":14.3,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144640360","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

Incorporation of model accuracy in gravitational wave Bayesian inference 引力波贝叶斯推理中模型精度的结合

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-15 DOI: 10.1038/s41550-025-02579-7

Charlie Hoy, Sarp Akçay, Jake Mac Uilliam, Jonathan E. Thompson

{"title":"Incorporation of model accuracy in gravitational wave Bayesian inference","authors":"Charlie Hoy, Sarp Akçay, Jake Mac Uilliam, Jonathan E. Thompson","doi":"10.1038/s41550-025-02579-7","DOIUrl":"10.1038/s41550-025-02579-7","url":null,"abstract":"Inferring the properties of colliding black holes from gravitational wave observations is subject to systematic errors arising from modelling uncertainties. Although the accuracy of each model can be calculated through comparison to theoretical expectations from general relativity, Bayesian analyses are yet to incorporate this information. As such, a mixture model is typically used where results obtained with different gravitational wave models are combined with either equal weight or based on their relative Bayesian evidence. In this work we present a new method for incorporating the accuracy of several models into gravitational wave Bayesian analyses. By analysing simulated gravitational wave signals in zero noise, we show that our technique uses 30% less computational resources and more faithfully recovers the true parameters than existing techniques. We further apply our method to a real gravitational wave signal and, when assuming the binary black hole hypothesis, demonstrated that the source of GW191109_010717 has unequal component masses, with a 69% probability for the primary being above the maximum black hole mass from stellar collapse. We envisage that this method will become an essential tool for ground-based gravitational wave astronomy. The inclusion of model mismatch information in gravitational wave parameter estimation improves on current model-averaging methods, allowing higher-accuracy inferences about the properties of merging black holes.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 8","pages":"1256-1267"},"PeriodicalIF":14.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41550-025-02579-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144629687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A young gas giant and hidden substructures in a protoplanetary disk 一个年轻的气体巨星和隐藏在原行星盘中的子结构

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-14 DOI: 10.1038/s41550-025-02576-w

Álvaro Ribas, Miguel Vioque, Francesco Zagaria, Cristiano Longarini, Enrique Macías, Cathie J. Clarke, Sebastián Pérez, John Carpenter, Nicolás Cuello, Itziar de Gregorio-Monsalvo

{"title":"A young gas giant and hidden substructures in a protoplanetary disk","authors":"Álvaro Ribas, Miguel Vioque, Francesco Zagaria, Cristiano Longarini, Enrique Macías, Cathie J. Clarke, Sebastián Pérez, John Carpenter, Nicolás Cuello, Itziar de Gregorio-Monsalvo","doi":"10.1038/s41550-025-02576-w","DOIUrl":"10.1038/s41550-025-02576-w","url":null,"abstract":"The detection of planets in protoplanetary disks has proven to be extremely challenging. By contrast, rings and gaps, usually attributed to planet–disk interactions, have been found in virtually every large protoplanetary (Class II) disk observed at 0.9–1.3 mm with sufficient spatial resolution (5 au). The nearby disk around MP Mus (PDS 66) stands as an exception to this rule, and its advanced age (7–10 Myr) is particularly difficult to reconcile with its apparent lack of substructures. Despite the disk’s smooth appearance, Gaia data of MP Mus show a significant proper motion anomaly, signalling the presence of a companion. Here we present ALMA 3-mm observations of the system with high spatial resolution comparable to previous 1.3-mm data. The new observations pierce deeper into the disk midplane and reveal an inner cavity (<3 au) and a ring at 10 au. The disk structure inferred from ALMA observations narrows down the properties of the companion to a gas giant orbiting at 1–3 au, and hydrodynamic simulations further confirm that such a planet can produce the observed cavity. These independent pieces of evidence constitute an indirect but compelling detection of an exoplanet within a protoplanetary disk using Gaia astrometry. The detection of dust substructures in MP Mus, thanks to the lower optical depths at longer wavelengths, suggests that rings and gaps are even more abundant than previously thought. ALMA and Gaia data combine to reveal a young gas giant in the protoplanetary disk around MP Mus. Previously unseen substructures, visible only at longer wavelengths, suggest that more planets may hide in disks than previously thought.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 8","pages":"1176-1183"},"PeriodicalIF":14.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41550-025-02576-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144622335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A solar C/O ratio in planet-forming gas at 1 au in a highly irradiated disk 在一个高度辐射的圆盘上，在1au处形成行星的气体中的太阳C/O比率

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-14 DOI: 10.1038/s41550-025-02596-6

Ilane Schroetter, Olivier Berné, Emeric Bron, Felipe Alarcon, Paul Amiot, Edwin A. Bergin, Christiaan Boersma, Jan Cami, Gavin A. L. Coleman, Emmanuel Dartois, Asuncion Fuente, Javier R. Goicoechea, Emilie Habart, Thomas J. Haworth, Christine Joblin, Le Petit Franck, Takashi Onaka, Els Peeters, Markus Rölling, Alexander G. G. M. Tielens, Marion Zannese

{"title":"A solar C/O ratio in planet-forming gas at 1 au in a highly irradiated disk","authors":"Ilane Schroetter, Olivier Berné, Emeric Bron, Felipe Alarcon, Paul Amiot, Edwin A. Bergin, Christiaan Boersma, Jan Cami, Gavin A. L. Coleman, Emmanuel Dartois, Asuncion Fuente, Javier R. Goicoechea, Emilie Habart, Thomas J. Haworth, Christine Joblin, Le Petit Franck, Takashi Onaka, Els Peeters, Markus Rölling, Alexander G. G. M. Tielens, Marion Zannese","doi":"10.1038/s41550-025-02596-6","DOIUrl":"10.1038/s41550-025-02596-6","url":null,"abstract":"The chemical composition of exoplanets is thought to be influenced by the composition of the disks in which they form. JWST observations have unveiled a variety of chemical species in numerous nearby disks, which show substantial variations in the C/O abundance ratio. However, little is known about the composition and C/O ratio of disks around young stars in clusters exposed to strong ultraviolet radiation from nearby massive stars, which are representative of the environments where most planetary systems form, including ours. Here we present JWST spectroscopy of d203-504, a young 0.7 M⊙ star in the Orion nebula with a 30 au disk irradiated by nearby massive stars. These observations reveal spectroscopic signatures of CO, H2O, CH3+ and polycyclic aromatic hydrocarbons. Water and CO are detected in absorption in the inner disk (r ≲ 1 au), where the estimated gas-phase C/O ratio is 0.48, consistent with the solar value and that of the Orion nebula. By contrast, CH3+ and polycyclic aromatic hydrocarbons are found in the extended surface layers of the disk. These results suggest that gas in the inner disk is chemically shielded from ultraviolet radiation, whereas the surface layers of the disk experience ultraviolet-induced chemistry, potentially depleting their carbon content. JWST reveals the chemistry of the disk of a young star in the Orion nebula, showing that it has water and CO in its inner regions that are shielded from UV radiation, whereas UV-processed molecules such as CH3+ and PAHs are detected in surface layers.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"9 9","pages":"1326-1336"},"PeriodicalIF":14.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144622336","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

Author Correction: Co-precession of a curved jet and compact accretion disk in M87 作者更正：M87中弯曲射流和致密吸积盘的共进动

IF 14.3 1区物理与天体物理

Nature Astronomy Pub Date : 2025-07-14 DOI: 10.1038/s41550-025-02625-4

Yuzhu Cui, Weikang Lin

引用次数: 0