Results 51 to 60 of about 49,810 (294)

Origin of the `He/N' and `Fe II' Spectral Classes of Novae

, 2012
The spectra of postoutburst novae display either He+N or Fe II lines as the most prominent non-Balmer lines at maximum light. Spectral diagnostics indicate physical conditions for 'He/N' spectra that are consistent with their origin in the white dwarf ...
Anupama, Campbell, Drake, Hauschildt, Kato, Kato, Robert Williams, Schaefer, Schwarz, Schwarz, Shafter, Shafter, Strope, Tanaka, Williams, Yaron   +15 more
core   +1 more source

The Symbiotic Novae [PDF]

International Astronomical Union Colloquium, 1988
AbstractSymbiotic Novae are composite spectrum variables, whose light history is characterized by a single nova-like outburst. Their behaviour and time evolution is rather similar to that of classical novae, except for the much longer time scale, and the associated physics could be the same.
openaire   +2 more sources

3D‐Printed Hygroscopic Polymer Networks for High‐Humidity Triboelectric Nanogenerators to Wirelessly Power Implantable Electronic Devices‐ A Conceptual Pathway

Advanced Functional Materials, EarlyView.
This work develops 3D‐printable tribopolymer networks that can enhance triboelectric performance under high humidity environments. Polar hydrophilic functional groups and incorporation of zwitterionic monomers promote bound‐water–dominated interfacial polarization thereby increasing electrical outputs.
Linguangze Zhuo, Jiawang Zeng, Qian Chen, Valentin A. Bobrin, Deepak Mishra, Anthony Chun Yin Yuen, Yixia Zhang, Cyrille Boyer, Jin Zhang   +8 more
wiley   +1 more source

An Extremely Massive White Dwarf of the Symbiotic Classical Nova V407 Cyg as Suggested by the RS Oph and U SCO Models

Open Astronomy, 2012
We have analyzed the optical light curve of the symbiotic star V407 Cyg that underwent a classical nova outburst in 2010 March. Being guided by a supersoft X-ray phase observed during days 20-40 after the nova outburst, we are able to reproduce the light
Hachisu I., Kato M.
doaj   +1 more source

The Effects of Changes in Reaction Rates on Simulations of Nova Explosions

, 2007
Classical novae participate in the cycle of Galactic chemical evolution in which grains and metal enriched gas in their ejecta, supplementing those of supernovae, AGB stars, and Wolf-Rayet stars, are a source of heavy elements for the ISM.
Hix, W. R., Iliadis, C., Sparks, W. M., Starrfield, S., Timmes, F. X.   +4 more
core   +1 more source

Unlocking Multi‐Valley Energy Pockets and Interface‐Induced Phonon Filtering in InSb Thermoelectrics by Reaction‐Driven Interface Engineering

Advanced Functional Materials, EarlyView.
InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin, Xiao Yang, Xiao‐Lei Shi, Chengyun Xu, Xi Ling, Pengyu Zhang, Jinfeng Dong, Yong Du, Haisheng Chen, Ting Zhang, Zhi‐Gang Chen   +10 more
wiley   +1 more source

Novas histórias, novas personagens

Revista de Estudos Literários, 2022
Uma das possiblidades de sobrevida da personagem, na perspectiva de uma teoria da figuração, projetada pelo crítico Carlos Reis, é a sua incorporação a uma narrativa subsequente àquela em que foi originalmente construída. A mulher do médico, por exemplo, é concebida na célebre obra Ensaio sobre a cegueira, de José Saramago, e refigurada como personagem
openaire   +3 more sources

The Newly Discovered Nova Super-remnant Surrounding Recurrent Nova T Coronae Borealis: Will it Light Up during the Coming Eruption?

The Astrophysical Journal Letters
A century or less separates the thermonuclear-powered eruptions of recurrent novae (RNe) in the hydrogen-rich envelopes of massive white dwarfs. The colliding ejecta of successive RN events are predicted to always generate very large (tens of parsecs ...
Michael M. Shara, Kenneth M. Lanzetta, Alexandra Masegian, James T. Garland, Stefan Gromoll, Joanna Mikolajewska, Mikita Misiura, David Valls-Gabaud, Frederick M. Walter, John K. Webb   +9 more
doaj   +1 more source

Shortest Recurrence Periods of Forced Novae

, 2016
We revisit hydrogen shell burning on white dwarfs (WDs) with higher mass accretion rates than the stability limit, \dot M_stable, above which hydrogen burning is stable. Novae occur with mass accretion rates below the limit.
Hachisu, Izumi, Kato, Mariko, Saio, Hideyuki   +2 more
core   +1 more source

Cidades Novas [PDF]

, 2020
Uma viagem ao universo das cidades novas, esse é o convite que essa obra vem oferecer aos leitores a fim de transitar, a partir da visão particular do autor, pelo contexto, pelos conceitos e pelos aspectos inerentes a esse tipo urbanístico, ainda pouco explorado pela literatura especializada brasileira.
openaire   +2 more sources