Results 191 to 200 of about 2,154,904 (218)
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Nova experiments to simulate the interactions of SN1987A with circumstellar matter
The 13th international conference on laser interactions and related plasma phenomena, 1997Nova laser target blowoff impacting low density foams can be used to simulate the expanding ejecta of SN1987A interacting with the circumstellar matter, especially the pending impact with the circumstellar ring discovered by optical astronomers. While the actual astrophysical phenomena cannot be studied in their totality in the laboratory, it seems ...
E. Liang +5 more
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Stellar Death: Ejecta and Circumstellar Matter
1997IR 15 milli-arcsecond interferometry in the 5 – 15 µm wavelength region of the circumstellar environments of AGB stars probes the dust condensation zones close to the stellar photospheres. Interferometric measurements which spatially resolve Galactic novae will provide distance determinations, can reveal dense knots in the structure of the ejected ...
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Circumstellar matter of SN1987A and soft X-ray emission
Nature, 1988X-ray emission from supernova 1987A has been observed continually by the Ginga satellite since July 1987. The observed X-ray spectrum1,2 has two components: hard X-rays, above 15 keV in energy, have a nearly flat spectrum, and are thought to be Compton-degraded γ-rays from the decay of 56Co (ref. 3); the soft component (
K. Masai +4 more
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Circumstellar Matter and Winds in Young Stars
1988The morphology of the circumstellar regions around low-mass protostars and pre-main-sequence stars is analysed in light of a wide range of observations (optical, near-, mid- and far-infrared, radio continuum, radio molecular emission). Optical and radio jets, near-infrared H2 and far-infrared [OI] fine structure lines are used to characterize the mass ...
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Mass-Losing Pulsating Stars and their Circumstellar Matter
2003I Recent Results of Massive Photometry.- The Sequence of Mass-Losing AGB Stars in the Magellanic Clouds.- Three Aspects of Red Giant Studies in the Magellanic Clouds.- Luminosities of AGB Variables.- Photometric Properties of Long-Period Variables in the Large Magellanic Cloud.- Stellar Sources in the ISOGAL Intermediate Bulge Fields.- GAIA: AGB Stars ...
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Infrared Studies on Active Binaries and Circumstellar Matter
1990The infrared properties of RS CVn-type systems are reviewed. The following points are examined: a) amplitude of the wave-like distortion, b) spectrophotometry, c) infrared excesses. In particular, point c) has been explored in some detail owing to its relevance as far as the evolutionary scenario of RS CVn’s is concerned.
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Photometry and spectroscopy of the Type Icn supernova 2021ckj
Astronomy and Astrophysics, 2023Ting-Wan Chen, Hanindyo Kuncarayakti
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