Results 231 to 240 of about 125,367 (265)
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Astrophysics, 1999
In searchs for flare stars in the vicinity of the Pleiades cluster, three flares were detected in 1970,1972, and 1977 in a star with the coordinates α1950= 3h48m·9, δl950= 25‡15’.8. The star’s brightness at a minimum is >21m·5. The star was tentatively assigned to the U Gem type.
E. A. Parsamian +2 more
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In searchs for flare stars in the vicinity of the Pleiades cluster, three flares were detected in 1970,1972, and 1977 in a star with the coordinates α1950= 3h48m·9, δl950= 25‡15’.8. The star’s brightness at a minimum is >21m·5. The star was tentatively assigned to the U Gem type.
E. A. Parsamian +2 more
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Nova and Dwarf Nova Observations with MAGIC
2016Starting in fall 2012, the MAGIC collaboration conducted a nova follow-up program in order to detect a possible VHE gamma-ray component. The program responded to Fermi-LAT detections of different types of novae at GeV energies: it initially focussed on symbiotic novae and later extended to bright Classical Novae and additional outbursts from other ...
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1995
Our survey of faint DNe is carried out using the facilities of the ESO and Asiago Observatories.
R. U. Claudi, A. Bianchini
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Our survey of faint DNe is carried out using the facilities of the ESO and Asiago Observatories.
R. U. Claudi, A. Bianchini
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Spectroscopic Observations of Dwarf Novae
International Astronomical Union Colloquium, 1979Abstract.Dwarf novae spectroscopic work is briefly reviewed and the radiation emitted by the components of the system is discussed. The reasons why the broad, shallow absorption lines arise in the disc, and not in the white dwarf, are assembled.
J.A.J. Whelan, M.W. Rayne, C.C. Brunt
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Publications of the Astronomical Society of the Pacific, 2000
We have carried out a synthetic spectral analysis of five IUE NEWSIPS archival spectra of the peculiar, very active dwarf nova CN Orionis taken at the system's lowest flux levels during quiescence. AAVSO data indicate the visual magnitude V ~ 14 for CN Ori at this time.
J. Urban +5 more
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We have carried out a synthetic spectral analysis of five IUE NEWSIPS archival spectra of the peculiar, very active dwarf nova CN Orionis taken at the system's lowest flux levels during quiescence. AAVSO data indicate the visual magnitude V ~ 14 for CN Ori at this time.
J. Urban +5 more
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Balmer decrements in dwarf novae
Astrophysical Bulletin, 2017We investigate the question of the possible variable conditions in dwarf novae. The Balmer decrements are used as variability indicators due to their form being strongly dependent on the conditions in the radiating medium. It is shown that the decrements are usually anomalous and variable in time at minimum light, which indicates a variability of the ...
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Outbursts of Southern Dwarf Novae
International Astronomical Union Colloquium, 1979Abstract.The mean cycles and types of maxima for a number of dwarf novae are tabulated. It is shown that supermaxima are not confined to dwarf novae of short mean cycles. The decline rates for some stars are examined to ascertain if the orbital period, accurate to within ten percent, could be derived from visual observations. It is shown that, at least
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Annals of the New York Academy of Sciences, 1984
J. K. CANNIZZO, J. C. WHEELER
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J. K. CANNIZZO, J. C. WHEELER
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1948
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Reducing brassinosteroid signalling enhances grain yield in semi-dwarf wheat
Nature, 2023Jie Liu
exaly