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Cover Picture: Astron. Nachr. 5/2025 封面图片：Astron。乙酰。5/2025
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-06-25 DOI: 10.1002/asna.70027
Friedrich Anders, Chloé Padois, Marc Vilanova Sar, Marcin Semczuk, Marc del Alcázar-Julià, Francesca Figueras
{"title":"Cover Picture: Astron. Nachr. 5/2025","authors":"Friedrich Anders,&nbsp;Chloé Padois,&nbsp;Marc Vilanova Sar,&nbsp;Marcin Semczuk,&nbsp;Marc del Alcázar-Julià,&nbsp;Francesca Figueras","doi":"10.1002/asna.70027","DOIUrl":"https://doi.org/10.1002/asna.70027","url":null,"abstract":"<p>Distribution of known fundamental-mode classical Cepheids in the Milky Way (data from Pietrukowicz et al. 2021). Top: positions in Galactocentric Cartesian coordinates, colour-coded by age; bottom: Age versus Galactocentric distance, colour-coded by metallicity (for objects with spectroscopic [Fe/H] measurements). The age distribution of Milky Way Cepheids is a particularly interesting and puzzling observable in the Galactic astrophysics context. Finding the youngest Cepheids in the inner Galaxy seems to be in conflict with the widely accepted inside-out formation scenario where by star formation progressively reached the outer regions of the Galaxy over the past billion years. A solution of this puzzle is offered in the paper by F. Anders et al. published in this issue (e70009).\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.70027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144482313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Issue Information: Astron. Nachr. 5/2025 发行信息：Astron。乙酰。5/2025
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-06-25 DOI: 10.1002/asna.70026
{"title":"Issue Information: Astron. Nachr. 5/2025","authors":"","doi":"10.1002/asna.70026","DOIUrl":"https://doi.org/10.1002/asna.70026","url":null,"abstract":"","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.70026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144482314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Cover Picture: Astron. Nachr. 3/2025 封面图片：Astron。乙酰。3/2025
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-06-03 DOI: 10.1002/asna.70013
J. E. Horvath
{"title":"Cover Picture: Astron. Nachr. 3/2025","authors":"J. E. Horvath","doi":"10.1002/asna.70013","DOIUrl":"https://doi.org/10.1002/asna.70013","url":null,"abstract":"<p>The wide variety of topics discussed at the IWARA 2014 workshop in Machu Picchu, Peru, and their relation to a large range of disciplines from archaeology to cosmology is illustrated schematically in this artwork. Names point out authors among the IWARA participants who wrote scientific contributions in the respective field of research. The chart may be taken as a guide to explore the publications in this Special Issue of AN. Some interesting philosophical comments about the science discussed (and not discussed) at the workshop can be found in the Concluding Remarks by J.E. Horvath (e240137).\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 3-4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.70013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Issue Information: Astron. Nachr. 3/2025 发行信息：Astron。乙酰。3/2025
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-06-03 DOI: 10.1002/asna.70012
{"title":"Issue Information: Astron. Nachr. 3/2025","authors":"","doi":"10.1002/asna.70012","DOIUrl":"https://doi.org/10.1002/asna.70012","url":null,"abstract":"","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 3-4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Can We Draw Conclusions on Supernova Shock Wave Propagation Using Short-Lived Radioactive Isotopes? 利用短寿命放射性同位素可以得出超新星激波传播的结论吗？
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-05-25 DOI: 10.1002/asna.70002
Benjamin Wehmeyer, Andrés Yagüe López, Benoit Côté, Maria K. Petö, Chiaki Kobayashi, Maria Lugaro
{"title":"Can We Draw Conclusions on Supernova Shock Wave Propagation Using Short-Lived Radioactive Isotopes?","authors":"Benjamin Wehmeyer,&nbsp;Andrés Yagüe López,&nbsp;Benoit Côté,&nbsp;Maria K. Petö,&nbsp;Chiaki Kobayashi,&nbsp;Maria Lugaro","doi":"10.1002/asna.70002","DOIUrl":"https://doi.org/10.1002/asna.70002","url":null,"abstract":"<p>We run a three-dimensional Galactic chemical evolution (GCE) model to follow the propagation of <sup>53</sup>Mn (exclusively produced from type Ia supernovae, SNIa), <sup>60</sup>Fe (exclusively produced from core-collapse supernovae, CCSNe), <sup>182</sup>Hf (exclusively produced from intermediate mass stars, IMSs), and <sup>244</sup>Pu (exclusively produced from neutron star mergers, NSMs). By comparing the predictions from our three-dimensional GCE model to recent detections of <sup>53</sup>Mn, <sup>60</sup>Fe, and <sup>244</sup>Pu on the deep-sea floor, we draw conclusions about their propagation in the interstellar medium.</p>","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 3-4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
On the Age Distribution of Classical Cepheids in the Galaxy 银河系中经典造父变星的年龄分布
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-05-18 DOI: 10.1002/asna.70009
Friedrich Anders, Chloé Padois, Marc Vilanova Sar, Marcin Semczuk, Marc del Alcázar-Julià, Francesca Figueras
{"title":"On the Age Distribution of Classical Cepheids in the Galaxy","authors":"Friedrich Anders,&nbsp;Chloé Padois,&nbsp;Marc Vilanova Sar,&nbsp;Marcin Semczuk,&nbsp;Marc del Alcázar-Julià,&nbsp;Francesca Figueras","doi":"10.1002/asna.70009","DOIUrl":"https://doi.org/10.1002/asna.70009","url":null,"abstract":"<p>We revisit the problem of the positive correlation between age and Galactocentric distance seen in Galactic Classical Cepheids, which at first sight may seem counter-intuitive in the context of inside-out galaxy formation. To explain it, we use the Besançon Galaxy Model and a simulation of star particles in the Galactic disc coupled with stellar evolutionary models. We then select Classical Cepheids from this simulation and test in qualitative terms which ingredients are necessary to find agreement with the observational data. We show that the interplay of the Galactic disc's metallicity gradient and the metallicity dependence of the Cepheids' life-time in the instability strip results in a pronounced positive age-Galactocentric distance relation. This renders a reconstruction of the recent star-formation history based on Classical Cepheids unrealistic. It also has important consequences on our interpretation of the observed scatter about the radial metallicity gradient measured with Galactic Classical Cepheids.</p>","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.70009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144482016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Stochastic Quantum Mechanics in Curved Spaces: Application to Schwarzschild Black Holes 弯曲空间中的随机量子力学：在史瓦西黑洞中的应用
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-05-08 DOI: 10.1002/asna.70007
Juan S. Jerez-Rodriguez, Tonatiuh Matos
{"title":"Stochastic Quantum Mechanics in Curved Spaces: Application to Schwarzschild Black Holes","authors":"Juan S. Jerez-Rodriguez,&nbsp;Tonatiuh Matos","doi":"10.1002/asna.70007","DOIUrl":"https://doi.org/10.1002/asna.70007","url":null,"abstract":"<p>In this work, we start from the hypothesis that the universe lives in a Gravitational Wave Background (GWB). From this hypothesis, it follows that space–time is not locally flat because we have to take into account the fluctuations of the GWB in space–time. This implies that sufficiently small particles will feel these oscillations, preventing them from following geodesic trajectories. Thus, in a previous work, it was shown that if these particles follow the geodesic trajectories plus a stochastic term due to space–time fluctuations, the field equation for these quantum particles is simply the Klein–Gordon equation in this arbitrary curved space–time. In this work, we analyze these geodesics plus the stochastic trajectories in a Schwarzschild black hole.</p>","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 3-4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Archaeoastronomy and Cognition: La Mink'a and La Mit'a From the Logic of Relations's Perspective 考古天文学与认知：关系逻辑视角下的“Mink’a”与“La Mit’a”
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-05-07 DOI: 10.1002/asna.70001
Mônica Estrázulas
{"title":"Archaeoastronomy and Cognition: La Mink'a and La Mit'a From the Logic of Relations's Perspective","authors":"Mônica Estrázulas","doi":"10.1002/asna.70001","DOIUrl":"https://doi.org/10.1002/asna.70001","url":null,"abstract":"<div>\u0000 \u0000 <p>To understand the contributions of ancient civilizations to the evolution of knowledge in the fields of archaeoastronomy and/or science in general, through a cognitive perspective, we seek to identify conceptual elements that are consonant and converge with science. All of them come from a cognitive processes in which the subject and the object of knowledge collaborate in a progressive constitution, according to Genetic Epistemology. It is necessary to identify the presence of logic as a mental structure that allows the subject to be capable of supporting the scientific work. In this article, we analyze dates that come from the inca's concept of Ayni which permeates the activities La Mint'a and La Mink'a and demonstrates the presence of the same cognitive structure—the logical—required by scientific work.</p>\u0000 </div>","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 3-4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Gaia Search for Stellar Companions of TESS Objects of Interest V 盖亚搜寻TESS感兴趣的伴星V
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-05-01 DOI: 10.1002/asna.70005
Markus Mugrauer, Ann-Kathrin Kollak, Lara Pietsch, Kai-Uwe Michel
{"title":"Gaia Search for Stellar Companions of TESS Objects of Interest V","authors":"Markus Mugrauer,&nbsp;Ann-Kathrin Kollak,&nbsp;Lara Pietsch,&nbsp;Kai-Uwe Michel","doi":"10.1002/asna.70005","DOIUrl":"https://doi.org/10.1002/asna.70005","url":null,"abstract":"<p>In this paper, we present the latest results of our ongoing multiplicity survey of (Community) TESS Objects of Interest, using astrometry and photometry from the latest data release of the ESA Gaia mission to detect stellar companions of these stars and to characterize their properties. A total of 92 binary and two hierarchical triple star systems are identified among the 745 target stars whose multiplicity is explored in this study, all at distances of less than 500 pc around the Sun. As expected for components of gravitationally bound star systems, the targets and the detected companions are at the same distance and share a common proper motion, as shown by their accurate Gaia astrometry. The companions have masses of about 0.12 to 1.6 <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>M</mi>\u0000 <mo>⊙</mo>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$$ {M}_{odot } $$</annotation>\u0000 </semantics></math> and are most frequently found in the mass range up to 0.6 <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>M</mi>\u0000 <mo>⊙</mo>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$$ {M}_{odot } $$</annotation>\u0000 </semantics></math>. The companions have projected separations from the targets between about 110 and 9600 au. Their frequency is highest and constant from about 300 to 800 au, decreasing at larger projected separations. In addition to main sequence stars, five white dwarf companions are detected in this study, whose true nature is unveiled by their photometric properties.</p>","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144482090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter 引力波背景暗能量与标量场暗物质
IF 1.1 4区 物理与天体物理
Astronomische Nachrichten Pub Date : 2025-04-22 DOI: 10.1002/asna.70004
Edwin L. Pérez-Ochoa, Tonatiuh Matos
{"title":"Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter","authors":"Edwin L. Pérez-Ochoa,&nbsp;Tonatiuh Matos","doi":"10.1002/asna.70004","DOIUrl":"https://doi.org/10.1002/asna.70004","url":null,"abstract":"<p>Recent observational results, such as those from pulsar timing arrays (PTA), suggest a low-frequency Gravitational Wave Background (GWB) permeates our universe. This opens the possibility that gravitational waves could span a broader spectrum, potentially impacting cosmological scales. Among novel Dark Energy (DE) models that explain DE as a very low-frequency GWB, the Compton Mass Dark Energy model (CMaDE) has shown promising theoretical alignment with cosmic acceleration. In this study, we explore the cosmological implications of the CMaDE model when coupled with Scalar Field Dark Matter (SFDM) as the dark matter candidate. We numerically solve the cosmological evolution equations for this combined CMaDE+SFDM framework, examining its impact on key observables and comparing results to the standard <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>ΛCDM</mi>\u0000 </mrow>\u0000 <annotation>$$ Lambda mathrm{CDM} $$</annotation>\u0000 </semantics></math> model. Our findings demonstrate that the CMaDE+SFDM model is broadly consistent with <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>ΛCDM</mi>\u0000 </mrow>\u0000 <annotation>$$ Lambda mathrm{CDM} $$</annotation>\u0000 </semantics></math>, showing similar evolution in observables such as the cosmic microwave background and the background energy densities, with some deviations that merit further investigation.</p>","PeriodicalId":55442,"journal":{"name":"Astronomische Nachrichten","volume":"346 3-4","pages":""},"PeriodicalIF":1.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/asna.70004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144207028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
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