Browsing by Subject "white dwarfs"

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Browsing by Subject "white dwarfs"

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  • Discovery of a T dwarf plus white dwarf binary system 
    Day-Jones, A. C.;Pinfield, D. J.;Ruiz, María Teresa;Beaumont, H.;Burningham, B.;Gallardo, J.;Gianninas, A.;Bergeron, P.;Napiwotzki, R.;Jenkins, J. S.;Zhang, Z. H.;Murray, D. N.;Catalán, S.;Gomes, J. (2011-01)
    We present the discovery of the first T dwarf + white dwarf binary system LSPM 1459+0857 AB, confirmed through common proper motion and spectroscopy. The white dwarf is a high proper motion object from the LSPM.... 
  • NEARBY SUPERNOVA FACTORY OBSERVATIONS OF SN 2007IF: FIRST TOTAL MASS MEASUREMENT OF A SUPER-CHANDRASEKHAR-MASS PROGENITOR 
    Scalzo, R. A.;Aldering, G.;Antilogus, P.;Aragón, C.;Bailey, S.;Baltay, C.;Bongard, S.;Buton, C.;Childress, M.;Chotard, N.;Copin, Y.;Fakhouri, H. K.;Gal-Yam, Avishay;Gangler, E.;Hoyer, Sergio;Kasliwal, M.;Loken, S.;Nugent, P.;Pain, R.;Pécontal, E.;Pereira, R.;Perlmutter, S.;Rabinowitz, David;Rau, A.;Rigaudier, G.;Runge, K.;Smadja, G.;Tao, C.;Thomas, R. C.;Weaver, B.;Wu, C. (2010-03)
    We present photometric and spectroscopic observations of SN 2007if, an overluminous (MV = -20.4), red (B -V = 0.16 at B-band maximum), slow-rising (trise = 24 days) type Ia supernova (SN Ia) in a very faint (.... 
  • ON THE INTERPRETATION OF HIGH-VELOCITY WHITE DWARFS AS MEMBERS OF THE GALACTIC HALO 
    Bergeron, P.;Ruiz, María Teresa;Hamuy, Mario;Leggett, K.;Currie, M. J.;Lajoie, C.-P. (2005-06-01)
    A detailed analysis of 32 of the 38 halo white dwarf candidates identified by Oppenheimer et al. is presented, based on model atmosphere fits to observed energy distributions built from optical BVRI and infrar.... 
  • Post-common envelope binaries from SDSS – XIV. The DR7 white dwarf–main-sequence binary catalogue 
    Rebassa Mansergas, A.;Nebot Gómez Morán, A.;Schreiber, M. R.;Gänsicke, B. T.;Schwope, A.;Gallardo, J.;Koester, D. (2012)
    We present an updated version of the spectroscopic white dwarf–main-sequence (WDMS) binary catalogue from the Sloan Digital Sky Survey (SDSS). 395 newsystems are serendipitous discoveries from the spectroscop.... 
  • THE OLD ENVIRONMENT OF THE FAINT CALCIUM-RICH SUPERNOVA SN 2005cz 
    Perets, Hagai B.;Gal-Yam, Avishay;Crockett, R. Mark;Anderson, Joseph P.;James, Phil A.;Sullivan, Mark;Neill, James D. (2011-02-20)
    The supernova SN 2005cz has recently attracted some attention due to the fact that it was spectroscopically similar to type Ib supernovae (SNe Ib), a class that is presumed to result from the core collapse of m....