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11 papers
Type Ia supernova Hubble diagram with near-infrared and optical observations
V. Stanishev, A. Goobar, R. Amanullah +10
We main goal of this paper is to test whether the NIR peak magnitudes of SNe Ia could be accurately estimated with only a single observation obtained close to maximum light, provid…
SN 2006oz: rise of a super-luminous supernova observed by the SDSS-II SN Survey
G. Leloudas, E. Chatzopoulos, B. Dilday +21
We study SN 2006oz, a newly-recognized member of the class of H-poor, super-luminous supernovae. We present multi-color light curves from the SDSS-II SN Survey, that cover the rise…
Line Profiles of Intermediate Redshift Type Ia Supernovae
Kohki Konishi, Joshua A. Frieman, Ariel Goobar +6
We present the temporal evolution of line profiles ranging from near ultraviolet to optical wavelengths by analyzing 59 Subaru telescope spectra of normal Type Ia Supernovae (SNe I…
Subaru Spectroscopy of SDSS-II Supernovae
Kohki Konishi, Naoki Yasuda, Kouichi Tokita +11
The Sloan Digital Sky Survey II (SDSS-II) Supernova Survey discovered Type Ia supernovae (SNe Ia) in an almost unexplored intermediate redshift range of and provid…
Spectral properties of Type Ia supernovae up to z~0.3
J. Nordin, L. Ostman, A. Goobar +10
Aims: Spectroscopic observations of Type Ia supernovae obtained at the New Technology Telescope (NTT) and the Nordic Optical Telescope (NOT), in conjunction with the SDSS-II Supern…
NTT and NOT spectroscopy of SDSS-II supernovae
L. Ostman, J. Nordin, A. Goobar +18
Context. The SDSS-II Supernova Survey, conducted between 2005 and 2007, was designed to detect a large number of Type Ia supernovae (SNe Ia) around z~0.2, the redshift "gap" betwee…