Zobrazeno 1 - 10
of 303
pro vyhledávání: '"Lugaro Maria"'
We provide an overview of the isotopic signatures of presolar supernova grains, specifically focusing on 44Ti-containing grains with robustly inferred supernova origins and their implications for nucleosynthesis and mixing mechanisms in supernovae. R
Externí odkaz:
http://arxiv.org/abs/2410.19254
The atmospheres of phosphorus-rich stars have been shown to contain between 10 and 100 times more P than our Sun. Given its crucial role as an essential element for life, it is especially necessary to uncover the origin of P-rich stars to gain insigh
Externí odkaz:
http://arxiv.org/abs/2408.12938
Publikováno v:
EPJ Web of Conferences, Vol 279, p 09002 (2023)
Neutron-capture processes made most of the abundances of heavy elements in the Solar System, however they cannot produce a number of rare proton-rich stable isotopes (p–nuclei) lying on the left side of the valley of stability. The γ–process, i.
Externí odkaz:
https://doaj.org/article/ecf64499a61d461d99cde4dd3f755770
Publikováno v:
A&A 686, L8 (2024)
The $\gamma$-process in core-collapse supernovae (CCSNe) can produce a number of neutron-deficient stable isotopes heavier than iron (p-nuclei). However, current model predictions do to not fully reproduce the solar abundances. We investigate the imp
Externí odkaz:
http://arxiv.org/abs/2405.07783
Autor:
D'Orazi, Valentina, Storm, Nicholas, Casey, Andrew R., Braga, Vittorio F., Zocchi, Alice, Bono, Giuseppe, Fabrizio, Michele, Sneden, Christopher, Massari, Davide, Giribaldi, Riano E., Bergemann, Maria, Campbell, Simon W., Casagrande, Luca, de Grijs, Richard, De Silva, Gayandhi, Lugaro, Maria, Zucker, Daniel B., Bragaglia, Angela, Feuillet, Diane, Fiorentino, Giuliana, Chaboyer, Brian, Dall'Ora, Massimo, Marengo, Massimo, Martínez-Vázquez, Clara E., Matsunaga, Noriyuki, Monelli, Matteo, Mullen, Joseph P., Nataf, David, Tantalo, Maria, Thevenin, Frederic, Vitello, Fabio R., Kudritzki, Rolf-Peter, Bland-Hawthorn, Joss, Buder, Sven, Freeman, Ken, Kos, Janez, Lewis, Geraint F., Lind, Karin, Martell, Sarah, Sharma, Sanjib, Stello, Dennis, Zwitter, Tomaž
Stellar mergers and accretion events have been crucial in shaping the evolution of the Milky Way (MW). These events have been dynamically identified and chemically characterised using red giants and main-sequence stars. RR Lyrae (RRL) variables can p
Externí odkaz:
http://arxiv.org/abs/2405.04580
Autor:
Liu Weiping, Li Zhihong, He Jianjun, Tang Xiaodong, Lian Gang, Su Jun, Shen Yangping, An Zhu, Chao Fuqiang, Chang Jianjun, Chen Lihua, Chen Han, Chen Xiongjun, Chen Yunhua, Chen Zhijun, Cheng Jianping, Cui Baoqun, Fang Xiao, Fu Changbo, Gan Lin, Guo Bing, Han Zhiyu, Guo Xuyuan, He Guozhu, He Jinrong, Heger Alexander, Hou Suqing, Huang Hanxiong, Huang Ning, Jia Baolu, Jiang Liyang, Kubono Shigeru, Li Jianmin, Li Mingchuan, Li Kuoang, Li Ertao, Li Tao, Li Yunju, Lugaro Maria, Luo Xiaobing, Ma Hongyi, Ma Shaobo, Mei Dongming, Nan Wei, Nan Weike, Qi Ningchun, Qian Yongzhong, Qin Jiuchang, Ren Jie, Shang Changsong, Sun Liangting, Sun Wenliang, Tan Wanpeng, Tanihata Isao, Wang Shuo, Wang Peng, Wang Youbao, Wu Qi, Xu Shiwei, Yang Yao, Yu Xiangqing, Yue Qian, Zeng Sheng, Zhang Long, Zhang Hao, Zhang Huanyu, Zhang Liyong, Zhang Ningtao, Zhang Peng, Zhang Qiwei, Zhang Tao, Zhang Xiaopeng, Zhang Xuezhen, Zhao Wei, Zhou Jifang, Zhou Yong
Publikováno v:
EPJ Web of Conferences, Vol 260, p 08001 (2022)
Underground Nuclear Astrophysics Experiment in China (JUNA) has been commissioned by taking the advantage of the ultra-low background in Jinping underground lab. High current mA level 400 KV accelerator with an ECR source and BGO detectors were commi
Externí odkaz:
https://doaj.org/article/cc5957baea144be0bfeeca2c98202ff3
Autor:
Seshashayana, Shilpa Bijavara, Jönsson, Henrik, D'Orazi, Valentina, Nandakumar, Govind, Oliva, Ernesto, Bragaglia, Angela, Sanna, Nicoletta, Romano, Donatella, Spitoni, Emanuele, Karakas, Amanda, Lugaro, Maria, Origlia, Livia
The age, evolution, and chemical properties of the Galactic disk can be effectively ascertained using open clusters. Within the large program Stellar Populations Astrophysics at the Telescopio Nazionale Galileo, we specifically focused on stars in op
Externí odkaz:
http://arxiv.org/abs/2402.09058
Autor:
Pignatari, Marco, Trueman, Thomas C. L., Womack, Kate A., Gibson, Brad K., Côté, Benoit, Turrini, Diego, Sneden, Christopher, Mojzsis, Stephen J., Stancliffe, Richard J., Fong, Paul, Lawson, Thomas V., Keegans, James D., Pilkington, Kate, Passy, Jean-Claude, Beers, Timothy C., Lugaro, Maria
Theoretical physical-chemical models for the formation of planetary systems depend on data quality for the Sun's composition, that of stars in the solar neighbourhood, and of the estimated "pristine" compositions for stellar systems. The effective sc
Externí odkaz:
http://arxiv.org/abs/2307.12330
Autor:
Brauner, Maren, Masseron, Thomas, García-Hernández, D. A., Pignatari, Marco, Womack, Kate A., Lugaro, Maria, Hayes, Christian R.
Publikováno v:
A&A 673, A123 (2023)
The origin of phosphorus, one of the essential elements for life on Earth, is currently unknown. Prevalent models of Galactic chemical evolution (GCE) underestimate the amount of P compared to observations. The recently discovered P-rich ([P/Fe] > 1
Externí odkaz:
http://arxiv.org/abs/2303.12590
Autor:
Lugaro, Maria, Ek, Mattias, Pető, Mária, Pignatari, Marco, Makhatadze, Georgy V., Onyett, Isaac J., Schönbächler, Maria
Analysis of bulk meteorite compositions has revealed small isotopic variations due to the presence of material (e.g., stardust) that preserved the signature of nuclear reactions occurring in specific stellar sites. The interpretation of such anomalie
Externí odkaz:
http://arxiv.org/abs/2303.01100