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2010•Astronomy and AstrophysicsOpen access

NTT and NOT spectroscopy of SDSS-II supernovae

L. Östman, J. Nordin, A. Goobar, R. Amanullah, M. Smith, J. Sollerman, V. Stanishev, M. Stritzinger, Bruce A. Bassett, T. M. Davis, Edmond Edmondson, J. Frieman, P. Garnavich, H. Lampeitl, G. Leloudas, J. Marriner, R. C. Nichol, Kathy Romer, M. Šako, Donald P. Schneider, C. Zheng

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Abstract

Context. The Sloan Digital Sky Survey II (SDSS-II) Supernova Survey, conducted between 2005 and 2007, was designed to detect a large number of type Ia supernovae around z ~ 0.2, the redshift “gap” between low-z and high-z supernova searches. The survey has provided multi-band (ugriz) photometric lightcurves for variable targets, and supernova candidates were scheduled for spectroscopic observations, primarily to provide supernova classification and accurate redshifts. We present supernova spectra obtained in 2006 and 2007 using the New Technology Telescope (NTT) and the Nordic Optical Telescope (NOT).

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Context. The Sloan Digital Sky Survey II (SDSS-II) Supernova Survey, conducted between 2005 and 2007, was designed to detect a large number of type Ia supernovae around z ~ 0.2, the redshift “gap” between low-z and high-z supernova searches. The survey has provided multi-band (ugriz) photometric lightcurves for variable targets, and supernova candidates were scheduled for spectroscopic observations, primarily to provide supernova classification and accurate redshifts. We present supernova spectra obtained in 2006 and 2007 using the New Technology Telescope (NTT) and the Nordic Optical Telescope (NOT).

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Available abstract

Context. The Sloan Digital Sky Survey II (SDSS-II) Supernova Survey, conducted between 2005 and 2007, was designed to detect a large number of type Ia supernovae around z ~ 0.2, the redshift “gap” between low-z and high-z supernova searches. The survey has provided multi-band (ugriz) photometric lightcurves for variable targets, and supernova candidates were scheduled for spectroscopic observations, primarily to provide supernova classification and accurate redshifts. We present supernova spectra obtained in 2006 and 2007 using the New Technology Telescope (NTT) and the Nordic Optical Telescope (NOT).

Key concepts: Physics, Astrophysics, Supernova, Photometry (optics), Redshift, Galaxy, Spectral line, Cosmology

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