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Rapid photometry of supernova 1987A: a 2.14 ms pulsar?
Kristian, Jerome A.; Danks, Anthony C.; Kunkel, William E. +9 more
We have monitored Supernova 1987A in optical/near-infrared bands using various high-speed photometers from a few weeks following its birth until early 1996 in order to search for a pulsar remnant. While we have found no clear evidence of any pulsar of constant intensity and stable timing, we have found emission with a complex period modulation nea…
The UV spectrum of nebulae
Zagury, Frédéric
This paper presents an analysis of the UV spectrum of some nebulae with clearly identified illuminating stars, all observed by the IUE satellite. The data show remarkable properties of the UV spectrum of the nebulae. Each spectrum is the product of the star spectrum and a linear function of 1/ λ. There is no peculiar behaviour in the spectrums at …
Interpretation of the UV spectrum of some stars with little reddening
Zagury, Frédéric
The UV spectrum of a few reddened stars will be decomposed into two terms. One is the direct starlight, F ★,λ0 e-τ λ, which is the product of the flux of the star corrected for interstellar extinction, F★, λ0, and of the extinction e - τλ. The second is starlig…