Results 81 to 90 of about 1,398,922 (322)

Thermonuclear Runaways on Accreting White Dwarfs: Models of Classical Novae Explosions [PDF]

, 2000
The mechanism of classical novae explosions is explained, together with some of their observational properties. The scarce but not null impact of novae in the chemical evolution of the Milky Way is analyzed, as well as their relevance for the ...
Hernanz, Margarita, Jose, Jordi
core   +3 more sources

Extragalactic Classical Nova Surveys

, 2008
We are currently involved in a multifaceted campaign to study extragalactic classical novae in the Local Group and beyond. Here we report on-going results from the exploitation of the POINT-AGAPE M31 dataset; initial results from our Local Group imaging, and spectroscopic CNe follow-up campaign and introduce the Liverpool Extragalactic Nova Survey.
Darnley, M. J., Black, D. T. R., Bode, M. F., Newsam, A. M., Kerins, E., O'Brien, T. J., Misselt, K., Shafter, A. W.   +7 more
openaire   +2 more sources

The Ejecta of Classical Novae [PDF]

Symposium - International Astronomical Union, 2001
Classical novae are interacting binary stars in which a thermonuclear runaway in material accreted onto a white dwarf from a companion red dwarf results in the ejection of around 10−4M⊙ at hundreds to thousands of kilometres per second. Recent Hubble Space Telescope and MERLIN imaging of the expanding ejecta from several classical novae are presented ...
T.J. O'Brien, R.J. Davis, M.F. Bode, S. P. S. Eyres, J.M. Porter   +4 more
openaire   +1 more source

Hyperandrogenemia Induces Trophoblast Ferroptosis and Early Pregnancy Loss in Patients With PCOS via CMA‐Dependent FTH1 Degradation

Advanced Science, EarlyView.
In PCOS patients with hyperandrogenemia, decreased ferritin heavy chain 1 (FTH1) causes Fe2⁺ overload and ferroptosis in trophoblasts. Androgens induce FTH1 protein degradation via AR‐LAMP2A‐mediated chaperone‐mediated autophagy pathway, leading to placental development disruption and early pregnancy loss. Metformin mitigates androgen‐induced placental
Hanjing Zhou, Weijie Yang, Na Liu, Qing Liu, Jiamin Jin, Chenqiong Zhao, Xiaoying Jin, Miao Gui, Haiyan Zhu, Songying Zhang, Yinli Zhang   +10 more
wiley   +1 more source

On the Rebrightenings of Classical Novae during the Early Phase [PDF]

, 2010
We report on the spectral evolution of 6 classical novae, V1186 Sco, V2540 Oph, V4745 Sgr, V5113 Sgr, V458 Vul, and V378 Ser, based on the low-resolution spectra obtained at the Fujii-Bisei Observatory and the Bisei Astronomical Observatory, Japan.
Ayani, Kazuya, Fujii, Mitsugu, Kato, Taichi, Nogami, Daisaku, Tanaka, Jumpei   +4 more
core   +1 more source

Modifying Glucose Metabolism Reverses Memory Defects of Alzheimer's Disease Model at Late Stages

Advanced Science, EarlyView.
Using spatial transcriptomics, we show that ferul enanthate (SL‐ZF‐01) reverses episodic‐like memory deficits in aged, but not young, Alzheimer’s disease (AD) mice. SL restores glucose metabolism and Glucose Transporter 1/3 expression via an ‘Aging‐AD‐Rescue’ pattern, rescuing deficits seen in aged AD mice.
Fang Liu, Yiyu‐Li Tang, Zong‐Bo Zhang, Ya‐Hong Tan, Si‐Hui Lin, Ni‐Ya Wang, Jin‐Nan Li, Zhi‐Jie Pan, Jian‐Feng Li, Jing‐Fei Huang, Yu‐Qiang Ding, Chun‐Ming Guo, Lin Xu, Cheng Peng, Qi‐Xin Zhou   +14 more
wiley   +1 more source

Suppression of Shock X-Ray Emission in Novae from Turbulent Mixing with Cool Gas

The Astrophysical Journal
Shock interaction in classical novae occurs when a fast outflow from the white dwarf ≳1000 km s ^−1 collides with a slower, cooler shell of gas released earlier in the outburst.
Brian D. Metzger, Lachlan Lancaster, Rebecca Diesing   +2 more
doaj   +1 more source

Gamma-ray signatures of classical novae

, 2001
The role of classical novae as potential gamma-ray emitters is reviewed, on the basis of theoretical models of the gamma-ray emission from different nova types.
Gomez-Gomar, J., Hernanz, M., Jose, J.
core   +2 more sources

The spectroscopic evolution of the $\gamma$-ray emitting classical nova Nova Mon 2012. I. Implications for the ONe subclass of classical novae [PDF]

, 2013
Nova Mon 2012 was the first classical nova to be detected as a high energy $\gamma$-ray transient, by Fermi-LAT, before its optical discovery.
Aquino, I. De Gennaro, Augusteijn, T., Cheung, C. C., Schwarz, G. J., Shore, S. N., Starrfield, S., Walter, F. M.   +6 more
core   +1 more source

THE 7Be ii RESONANCE LINES IN TWO CLASSICAL NOVAE V5668 SGR AND V2944 OPH [PDF]

, 2016
We report spectroscopic observations of the resonance lines of singly ionized 7Be in the blueshifted absorption line systems found in the post-outburst spectra of two classical novae—V5668 Sgr (Nova Sagittarii 2015 No.
A. Tajitsu, K. Sadakane, H. Naito, A. Arai, H. Kawakita, W. Aoki   +5 more
semanticscholar   +1 more source