@article{c86382ceb6af4f9eb8130cd649dbc4fc,
title = "Optical observations of supernova 1993 J from la Palma-I. Days 2 to 125",
abstract = "We present astrometric, photometric and spectroscopic observations of supernova 1993J in M81, obtained with the Isaac Newton Group telescopes and the Carlsberg Automatic Meridian Circle. The spectral data set includes the first spectrum ever taken of SN1993J. The early spectra also yield an estimate of the total visual extinction, Av. This is combined with the photometric data to produce a bolometric light curve. Implications of the latter and of the spectral development are also discussed. The spectral evolution includes an infrared excess, which appeared after day 50 and may be indicative of an IR echo. The unchanging nature of blueshifted oxygen lines in the spectra argues for asymmetry in the distribution of the line-emitting region.",
keywords = "Dust, extinction, Galaxies: Individual: M8J, Supernovae: Individual: 1993J",
author = "Lewis, {James R.} and Walton, {N. A.} and Meikle, {W. P.S.} and R. Martin and {Robert Cumming}, J. and Catchpole, {R. M.} and M. Arevalo and Argyle, {R. W.} and Benn, {C. R.} and Bunclark, {P. S.} and Castaneda, {H. O.} and M. Centurion and Clegg, {R. E.S.} and A. Delgado and Dhillon, {V. S.} and P. Goudfrooij and Harlaftis, {E. H.} and Hassall, {B. J.M.} and L. Helmer and Hill, {P. W.} and Jones, {D. H.P.} and King, {D. L.} and C. Lazaro and Lucey, {J. R.} and Martin, {E. L.} and L. Miller and Morrison, {L. V.} and Penny, {A. J.} and E. Perez and M. Read and Rudd, {P. J.} and Rutten, {R. G.M.} and Sharpies, {R. M.} and Unger, {S. W.} and J. Vilchez",
note = "Publisher Copyright: {\textcopyright} 2019 Royal Astronomical Society.",
year = "1994",
doi = "10.1093/mnras/266.1.L27",
language = "Ingl{\'e}s",
volume = "266",
pages = "L27--L39",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
number = "1",
}