D. Yu. Tsvetkov

SN 2003du: 480 days in the life of a normal type Ia supernova

Aims. We present a study of the optical and near-infrared (NIR) properties of the Type Ia Supernova (SN Ia) 2003du. Methods. An extensive set of optical and NIR photometry and low-resolution long-slit spectra was obtained using a number of facilities. The observations started 13 days before B -band maximum light and continued for 480 days with exceptionally good time sampling. The optical photometry was calibrated through the S-correction technique. Results. The

Optical and near infrared coverage of SN 2004et: physical parameters and comparison with other type IIP supernovae

{\it UBVRIJHK}

Observations and analysis of two type IIP supernovae: the intrinsically faint object SN 2005cs and the ambiguous object SN 2005ay

light curves and the color indices of SN 2003du closely resemble those of normal SNe Ia. SN 2003du reached a B -band maximum of 13.49 ± 0.02 mag on JD2 452 766.38 ± 0.5. We derive a B -band stretch parameter of

The SAI catalog of supernovae and radial distributions of supernovae of various types in galaxies

0.988 \pm0.003

Radial Distributions of Gamma-Ray Bursts and Type Ib/c Supernovae in Galaxies

, which corresponds to

SN2015bh in NGC 2770: LBV core collapse in merging of binary system components

\Delta m_{15}=1.02\,\pm0.05

Spectral and Photometric Monitoring of Distant Core-Collapse Supernovae in the SAO RAS

, indicative of a SN Ia of standard luminosity. The reddening in the host galaxy was estimated by three methods, and was consistently found to be negligible. Using an updated calibration of the V and

Observations of supernovae in the period 1997–1999

{\it JHK}

Photometric observations of the supernova 2009nr

absolute magnitudes of SNe Ia, we find a distance modulus

Distribution of type Ib/c supernovae relative to galactic spiral arms

\mu=32.79\pm0.15