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History of two mass loss processes in VY CMa. VY CMa 中两个质量损失过程的历史。
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 2023-01-05 eCollection Date: 2023-01-01 DOI: 10.1051/0004-6361/202244396
G Quintana-Lacaci, L Velilla, J P Fonfría, J Cernicharo, A Castro-Carrizo, M Agúndez, L Decin
{"title":"History of two mass loss processes in VY CMa.","authors":"G Quintana-Lacaci, L Velilla, J P Fonfría, J Cernicharo, A Castro-Carrizo, M Agúndez, L Decin","doi":"10.1051/0004-6361/202244396","DOIUrl":"10.1051/0004-6361/202244396","url":null,"abstract":"<p><p>Red Supergiant stars (RSGs) are known to eject large amounts of material during this evolutionary phase. However, the processes powering the mass ejection in low- and intermediate-mass stars do not work for RSGs and the mechanism that drives the ejection remains unknown. Different mechanisms have been proposed as responsible for this mass ejection including Alfvén waves, large convective cells, and magnetohydrodynamical (MHD) disturbances at the photosphere, but so far little is known about the actual processes taking place in these objects. Here we present high angular resolution interferometric ALMA maps of VY CMa continuum and molecular emission, which resolve the structure of the ejecta with unprecedented detail. We reconstructed the 3D structure of the gas traced by the different species. It allowed us to study the morphology and kinematics of the gas traced by the different species surrounding VY CMa. Two types of ejecta are clearly observed: extended, irregular, and vast ejecta surrounding the star that are carved by localized fast outflows. The structure of the outflows is found to be particularly flat. We present a 3D reconstruction of these outflows and proof of the carving. This indicates that two different mass loss processes take place in this massive star. We tentatively propose the physical cause for the formation of both types of structures. These results provide essential information on the mass loss processes of RSGs and thus of their further evolution.</p>","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"335 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7615397/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73178626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tool for Screening Visual Acuity in Older Individuals With Dementia. 老年痴呆症患者视力筛查工具。
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 2017-03-01 Epub Date: 2017-01-24 DOI: 10.1177/1533317517689877
Hélène Kergoat, Caroline Law, Estefania Chriqui, Bernard-Simon Leclerc, Marie-Jeanne Kergoat
{"title":"Tool for Screening Visual Acuity in Older Individuals With Dementia.","authors":"Hélène Kergoat, Caroline Law, Estefania Chriqui, Bernard-Simon Leclerc, Marie-Jeanne Kergoat","doi":"10.1177/1533317517689877","DOIUrl":"10.1177/1533317517689877","url":null,"abstract":"<p><p>Rationale/Objective: To develop a screening and referral algorithm tool to help identify which older institutionalized individuals with dementia need an eye examination.</p><p><strong>Methods: </strong>The visual acuity (VA) screening test was developed on an iPad retina display. Three optotypes were used (letters, numbers, and tumbling E's) to determine whether one works best with dementia. The screening VA results and algorithm decision were validated against those obtained by an optometrist performing a complete eye examination.</p><p><strong>Results: </strong>Of the 150 participants, 14.7% did not respond to any optotype, while 85.3% responded to letters, 84.0% to numbers, and 66.0% to tumbling E's. The VA achieved was superior for letters. The concordance for the screening versus eye examination was >80% for VA and 90% for the algorithm.</p><p><strong>Conclusion: </strong>The results indicate that the tool was successful at identifying older individuals with dementia needing an eye examination.</p>","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"334 1","pages":"96-100"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10852889/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73153104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Short note 简短的笔记
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 2008-01-01 DOI: 10.1007/BF01295191
J. H. Greenlee
{"title":"Short note","authors":"J. H. Greenlee","doi":"10.1007/BF01295191","DOIUrl":"https://doi.org/10.1007/BF01295191","url":null,"abstract":"","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"328 1","pages":"I"},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF01295191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51536529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Landau's collision term in time-dependent density matrix formalism 时变密度矩阵形式中的朗道碰撞项
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 1990-12-01 DOI: 10.1007/BF01290188
M. Tohyama
{"title":"Landau's collision term in time-dependent density matrix formalism","authors":"M. Tohyama","doi":"10.1007/BF01290188","DOIUrl":"https://doi.org/10.1007/BF01290188","url":null,"abstract":"","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"335 1","pages":"413-416"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF01290188","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51520053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interaction times in the19F+63Cu dissipative heavy ion reaction 19f +63Cu耗散重离子反应的相互作用次数
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 1990-12-01 DOI: 10.1007/BF01294112
G. Cardella, M. Papa, G. Pappalardo, F. Rizzo, Q. Wang, A. Rosa, E. Fioretto, G. Inglima, M. Romoli, M. Sandoli, R. Setola, L. Corradi, G. Montagnoli, D. Napoli, A. Stefanini
{"title":"Interaction times in the19F+63Cu dissipative heavy ion reaction","authors":"G. Cardella, M. Papa, G. Pappalardo, F. Rizzo, Q. Wang, A. Rosa, E. Fioretto, G. Inglima, M. Romoli, M. Sandoli, R. Setola, L. Corradi, G. Montagnoli, D. Napoli, A. Stefanini","doi":"10.1007/BF01294112","DOIUrl":"https://doi.org/10.1007/BF01294112","url":null,"abstract":"","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"336 1","pages":"387-390"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF01294112","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51527504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Fission product energies and anisotropies following complete fusion of16O+238U 16o +238U完全聚变后的裂变产物能量和各向异性
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 1990-12-01 DOI: 10.1007/BF01294115
D. Parker, J. Hogan, J. Asher
{"title":"Fission product energies and anisotropies following complete fusion of16O+238U","authors":"D. Parker, J. Hogan, J. Asher","doi":"10.1007/BF01294115","DOIUrl":"https://doi.org/10.1007/BF01294115","url":null,"abstract":"","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"336 1","pages":"411-422"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF01294115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51527533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Fission modes in charged-particle induced fission 带电粒子诱导裂变中的裂变模式
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 1990-12-01 DOI: 10.1007/BF01294981
A. Matthies, R. Kotte, W. Seidel, F. Stary, D. Wohlfarth
{"title":"Fission modes in charged-particle induced fission","authors":"A. Matthies, R. Kotte, W. Seidel, F. Stary, D. Wohlfarth","doi":"10.1007/BF01294981","DOIUrl":"https://doi.org/10.1007/BF01294981","url":null,"abstract":"","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"337 1","pages":"439-446"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF01294981","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51535948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the extraction of elastic neutron electromagnetic form factors from highQ2D(e, e′) scattering 基于高q2d (e, e′)散射的弹性中子电磁形状因子提取
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 1990-12-01 DOI: 10.1007/BF01290191
M. Sargsyan, L. Frankfurt, M. Strikman
{"title":"On the extraction of elastic neutron electromagnetic form factors from highQ2D(e, e′) scattering","authors":"M. Sargsyan, L. Frankfurt, M. Strikman","doi":"10.1007/BF01290191","DOIUrl":"https://doi.org/10.1007/BF01290191","url":null,"abstract":"","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"335 1","pages":"431-435"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF01290191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51520089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Qβ-Measurements of indium, tin and antimony isotopes with massesA=128 and 130 q β-质量为128和130的铟、锡和锑同位素的测量
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 1990-12-01 DOI: 10.1007/BF01294109
U. Stöhlker, A. Blönnigen, W. Lippert, H. Wollnik
{"title":"Qβ-Measurements of indium, tin and antimony isotopes with massesA=128 and 130","authors":"U. Stöhlker, A. Blönnigen, W. Lippert, H. Wollnik","doi":"10.1007/BF01294109","DOIUrl":"https://doi.org/10.1007/BF01294109","url":null,"abstract":"","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"336 1","pages":"369-374"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF01294109","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51527473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Monte Carlo simulations of the Lewis effect 路易斯效应的蒙特卡罗模拟
Zeitschrift fur Physik. A, Atomic nuclei Pub Date : 1990-12-01 DOI: 10.1007/BF01294114
K. Langanke, H. Reusch, C. Rolfs
{"title":"Monte Carlo simulations of the Lewis effect","authors":"K. Langanke, H. Reusch, C. Rolfs","doi":"10.1007/BF01294114","DOIUrl":"https://doi.org/10.1007/BF01294114","url":null,"abstract":"","PeriodicalId":83583,"journal":{"name":"Zeitschrift fur Physik. A, Atomic nuclei","volume":"336 1","pages":"403-410"},"PeriodicalIF":0.0,"publicationDate":"1990-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/BF01294114","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51527519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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