Longterm Variability of Quasistellar Objects and Their Distribution in the Hubble Diagram
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Beckman, J. E. et al.
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1986
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It also provides access to IAC Preprints Repository here: https://research.iac.es/preprints/
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Long-term variability of quasi-stellar objects, and their distribution in the Hubble diagram.Not AvailableBeckman, J. E. et al.
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Lithium abundances in samples of dwarf stars of population II and very old population IThe CCD camera and Intermediate Dispersion Spectrograph of the 2.5 m Issaac Newton Telescope are used to obtain high quality spectra of the 6708-A Li-7 resonance doublet in 22 dwarfs with metallicities not greater than -0.7. A mean constant value of Log N(Li) = 2.07 (+ or - 0.1) is found for highly metal deficient dwarfs (Fe/H abundance ratios ofBeckman, J. et al.
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La estructura anular de la zona nuclear de NGC 7331Not AvailableBeckman, J. et al.
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Interstellar CIV and SiIV in the local interstellar medium (?)Not AvailableMolaro, P. et al.
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Improvement of the Hubble diagram for QSO's leading towards g(O)Using the predictions of the Lynden Bell/Hills model of the energy source of QSO's in which discrete packets of matter (e.g., stars) are converted into radiation near a massive black hole, it is shown how the variability observations of QSO's over long periods may be used to upgrade the Hubble diagram for these objects. In a class of objects of lowBeckman, J. E. et al.
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01986