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within R. Schaeffer Remove this filter English Remove this filter Astronomy, Observations and Techniques Remove this filter

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  1. No Access

    Chapter and Conference Paper

    Low-Mass Objects and the Dark Matter in the Halo

    If the unseen matter in our Galaxy is provided by very low-mass star-like objects, we show that the halo infrared luminosity is dominated by 0. 1M ⊙ objects. In this case, the halo IMF must be muc...

    G. Chabrier, D. Méra, R. Schaeffer in The Bottom of the Main Sequence — And Beyond (1995)

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    Chapter and Conference Paper

    The light curve of SN 1987 A

    We use a semi-analytical model of supernova light curves that extends Arnett's scheme [1,2] to include the effect of recombination of hydrogen, helium and heavy elements in the expanding ejecta. Introducing in...

    R. Schaeffer, M. Cassé, R. Mochkovitch… in Atmospheric Diagnostics of Stellar Evoluti… (1988)

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    Chapter

    Influence Of Quark Nuggets on Primordial Nucleosynthesis

    There are many indications that the baryonic content of the universe is rather low. The observation of the luminous matter in galaxies leads to a ratio Ωbof the baryon density over the critical density of about 0...

    R. Schaeffer, P. Delbourgo-Salvador… in Nucleosynthesis and Its Implications on Nu… (1986)

  4. No Access

    Chapter

    Light Curves of Exploding Wolf-Rayet Stars

    The removal of the extended hydrogen envelope surrounding the dense core of preexplosive stars by stellar winds or mass transfer onto a companion star, obviously, has consequences on the optical manifestation ...

    S. Cahen, R. Schaeffer, M. Cassé in Nucleosynthesis and Its Implications on Nu… (1986)