Results 11 to 20 of about 13,456 (303)
Proceedings of the National Academy of Sciences, 1934 The extensive investigations of extragalactic systems during recent years have brought to light the remarkable fact that there exist two well-defined types of new stars or novae which might be distinguished as common novae and super-novae. No intermediate objects have so far been observed.
W, Baade, F, Zwicky
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Reviews of Modern Physics, 1940 A general classification of novae in terms of integral parameters is proposed. It is shown in particular that the distribution of novae in dependence on the intrinsic luminosity at maximum brightness reveals the existence of two distinct classes, designated as common novae and supernovae. In Section (A) the usefulness of the study of temporary stars in
Zwicky, F.
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International Astronomical Union Colloquium, 1987 AbstractWe consider the possibility that dust grains in novae could nucleate on ions. We examine how different ejected masses and different elemental abundances effect the availability of nucleation centres, and we show how this model could explain why only novae of intermediate speed classes form dust.
C. M. Callus, J. S. Albinson, A. Evans
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Dwarf novae in the Hamburg quasar survey : rarer than expected [PDF]
, 2006 Aims. We report the discovery of five new dwarf novae that were spectroscopically identified in the Hamburg Quasar Survey (HQS),and discuss the properties of the sample of new dwarf novae from the HQS. Methods.
A. Aungwerojwit +29 more
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The orbital and superhump periods of the dwarf nova HS 0417+7445 in Camelopardalis [PDF]
, 2011 We present the 2005-2010 outburst history of the SU UMa-type dwarf HS 0417+7445, along with a detailed analysis of extensive time-series photometry obtained in March 2008 during the second ecorded superoutburst of the system.
P. Dubovský +11 more
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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
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Nucleosynthesis in Novae [PDF]
Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 2017 Peer ...
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Novas Mídias, novas linguagens:
Kiri-Kerê - Pesquisa em Ensino, 2022 Neste artigo, pretendo apresentar algumas de minhas percepções, enquanto arte-educador da Rede Estadual de Ensino de Minas Gerais, a respeito do regime de ensino-aprendizagem à distância oferecido aos alunos e alunas das Escolas Estaduais de MG durante a pandemia de Covid-19, bem como apontar os caminhos de pesquisa-ação desenvolvidos por mim, em ...
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Recurrent novae: what do we know about them? [PDF]
, 2011 Recurrent novae (RNe) belong to the group of cataclysmic variables that exhibit nova outbursts at intervals on the order of decades. They are rare, with 10 Galactic RNe known to date.
Anupama, G. C.
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In silico and in vitro exploration of a tyrosinase for biocatalytic production of catechols
FEBS Open Bio, EarlyView.Tyrosinase from Ralstonia pseudosolanacearum is a promising biocatalyst for producing valuable catechols from monophenol substrates. This tyrosinase is uniquely suited to this due to its high monophenolase : diphenolase ratio. We combined in silico docking and in vivo kinetic characterisation of this tyrosinase with 11 industrially relevant monophenols,
James Britton +6 more
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