Photometric and Spectroscopic study of a highly reddened type Ia supernova SN 2003hx in NGC 2076

Abstract

We present $UBVRI$ CCD photometry and optical spectra of the type Ia supernova SN 2003hx which appeared in the galaxy NGC 2076, obtained till $\sim$ 146 days after the epoch of $B$ band maximum. The supernova reached at maximum brightness in $B$ band on JD 245 2893 $\pm$ 1.0 with an apparent magnitude of 14.92 $\pm$ 0.01 mag which was estimated by making template fits to the light curves. SN 2003hx is an example of a highly reddened supernova with $E(B-V)$ = 0.56 $\pm$ 0.23. We estimate $R_v$ = 1.97 $\pm$ 0.54 which indicates the small size of dust particles as compared to their galactic counterparts. The luminosity decline rate is $\Delta m_{15}(B)$ = 1.17 $\pm$ 0.12 mag and the absolute $B$ band magnitude obtained from the luminosity versus decline rate relation (Phillips et al. 1999) is $M_{max}^B$ = -19.20 $\pm$ 0.18 mag. The peak bolometric luminosity indicates that $\sim$ 0.66 $M_{\odot }$ mass of ${}^{56}$ Ni was ejected by the supernova. The spectral evolution indicates the supernova to be a normal type Ia event.

16 pages, 21 figures, 5 tables, Accepted for publication in MNRAS

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Cited by in corpus (4)

• The death of massive stars - I. Observational constraints on the progenitors of type II-P supernovae
• An Open Catalog for Supernova Data
• Linear spectropolarimetry of 35 Type Ia Supernovae with VLT/FORS: An analysis of the Si II line polarization
• Shedding light on the Type Ia supernova extinction puzzle: dust location found