The Carbon-rich Type Ic SN 2007gr: The Photospheric Phase
S. ValentiDipartimento di Fisica, Universitá di Ferrara, via Paradiso 12, 44100 Ferrara, ItalyN. Elias-RosaMax-Planck-Institut für Astrophysik, Karl-Schwarzschild-Strasse 1, 85741 Garching bei München, GermanyS. TaubenbergerMax-Planck-Institut für Astrophysik, Karl-Schwarzschild-Strasse 1, 85741 Garching bei München, GermanyV. StanishevDepartment of Physics, Stockholm University, Stockholm, SwedenI. AgnolettoINAF-Osservatorio Astronomico, vicolo dell’Osservatorio 5, 35122 Padova, ItalyD. SauerMax-Planck-Institut für Astrophysik, Karl-Schwarzschild-Strasse 1, 85741 Garching bei München, GermanyE. CappellaroINAF-Osservatorio Astronomico, vicolo dell’Osservatorio 5, 35122 Padova, ItalyA. PastorelloAstrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, UKS. BenettiINAF-Osservatorio Astronomico, vicolo dell’Osservatorio 5, 35122 Padova, ItalyA. RiffeserMax-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse, 85748 Garching bei München, GermanyU. HoppMax-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse, 85748 Garching bei München, GermanyH. NavasardyanINAF-Osservatorio Astronomico, vicolo dell’Osservatorio 5, 35122 Padova, ItalyD. TsvetkovV. LorenziFundación Galileo Galilei-INAF, Telescopio Nazionale Galileo, E-38700 Santa Cruz de la Palma, Tenerife, SpainF. PatatEuropean Organization for Astronomical Research in the Southern Hemisphere, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, GermanyM. TurattoINAF-Osservatorio Astronomico, vicolo dell’Osservatorio 5, 35122 Padova, ItalyR. BarbonDipartimento di Astronomia, Universitá di Padova, vicolo dell’Osservatorio 2, 35122 Padova, ItalyS. CiroiDipartimento di Astronomia, Universitá di Padova, vicolo dell’Osservatorio 2, 35122 Padova, ItalyF. Di MilleDipartimento di Astronomia, Universitá di Padova, vicolo dell’Osservatorio 2, 35122 Padova, ItalyS. FrandsenInstitut for Fysik og Astronomi, Aarhus Universitet, Ny Munkegade, Bygn. 1520, 8000 Aarhus C, DenmarkJ. P. U. FynboDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, DenmarkP. LaursenDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, DenmarkP. A. MazzaliINAF-Osservatorio Astronomico, Via Tiepolo 11, 34143 Trieste, Italy
2008en
ABI
Annotatsiya
The first 2 months of spectroscopic and photometric monitoring of the nearby Type Ic SN 2007gr are presented. The very early discovery (less than 5 days after the explosion) and the relatively short distance of the host galaxy motivated an extensive observational campaign. SN 2007gr shows an average peak luminosity but unusually narrow spectral lines and an almost flat photospheric velocity profile. The detection of prominent carbon features in the spectra is shown and suggests a wide range in carbon abundance in stripped-envelope supernovae. SN 2007gr may be an important piece in the puzzle of the observed diversity of CC SNe.
Hali tarjima qilinmagan
Identifikatorlar
Iqtiboslar va manbalar
2 ta iqtibos0 ta foydalanilgan manba