Results 51 to 60 of about 82,748 (221)
Symposium - International Astronomical Union, 1976 Recent work on the physical processes resulting from mass transfer between the red and blue components of dwarf nova binaries is reviewed. The optical behaviour of the blue component's accretion disc suggests that it may be the infall, accretion energy which is being liberated during outbursts.
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Relation between Long-term Activity and Luminosity of the Pre- and Post-novae CT Ser and V446 Her
The Astronomical Journal, 2023 We show a relation of the pre- and post-nova activity of CT Ser (nova 1948) and V446 Her (nova 1960), known to have remarkably similar orbital periods P _orb . We use both photographic and CCD photometric observations.
Vojtěch Šimon
doaj +1 more source
International Journal of Art &Design Education, EarlyView.Abstract This autoethnographic study lies at the intersection of architectural, teaching and research practice through the lens of an architect‐teacher‐researcher working in post‐Apartheid South Africa. The research traces a shift from unconscious design practice to a more conscious, critical and careful practice through practice‐based design research ...
Sandra Felix
wiley +1 more source
Observations of Dwarf Novae [PDF]
Symposium - International Astronomical Union, 1976 Spectroscopic and photometric observations relevant to the structure of classical novae, recurrent novae and dwarf novae are collected together. Details are given of optical, infrared, satellite ultraviolet, X-ray and radio observations. Most of these can be understood in terms of the hot spot model of cataclysmic variable stars.
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JCMS: Journal of Common Market Studies, EarlyView.Abstract In recent years, the European Union (EU) expanded its digital regulatory competences. However, it is not clear which political trade‐offs occur in decision‐making on digital policy issues. This study examines how European parliamentarians and their party groups position themselves on these issues and which conflict lines emerge. Analysing roll
Adam Geoffrey Tyler, Ben Crum
wiley +1 more source
Hot white dwarfs and the UV delay in dwarf novae [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 We calculate the effect of illumination of dwarf nova accretion discs by radiation from a hot, central, white dwarf. We show that only for very hot white dwarfs (Teff ~ 40 000$ K) the inner region of quiescent dwarf nova discs are partially depleted so that the delay between the rise to outburst of the optical and UV fluxes would be increased as ...
Hameury, J. -M. +2 more
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, 1993 Dwarf novae are defined on grounds of their semi-regular brightness variations of some two to five magnitudes on time scales of typically 10 to 100 days. Historically several different classification schemes have been used. Today, dwarf novae are divided
Ladous, Constanze
core
Journal of Integrative Plant Biology, EarlyView.The redox‐sensitive transcriptional repressor ZmMS1 coordinates reactive oxygen species homeostasis and lipid allocation for pollen exine and anther cuticle formation. Loss or precocious expression of ZmMS1 causes male sterility. Constitutive overexpression induces dwarfism and semi‐sterility. These findings enable flexible maize male‐sterility systems
Quancan Hou +13 more
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Radiation from dwarf nova discs
Physics Reports, 1999 We use the Shaviv and Wehrse (1991) code to model the vertical structure and the emission properties of quiescent dwarf nova discs. We find that in the case of HT Cas the quiescent disc must be optically thin, in contradiction with the requirements of the standard disc instability model. We find a viscosity parameter alpha > 1. Although this is much
Idan, Irit +3 more
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The dwarf nova SS Cygni: what is wrong? [PDF]
Astronomy & Astrophysics, 2007 6 pages, 3 figures, accepted for publication in Astronomy and ...
Schreiber, M. R., Lasota, J. -P.
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