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arXiv · 0804.4439

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

Kuntal Misra·D. K. Sahu·G. C. Anupama·Kavita Pandey
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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 $Δm_{15}(B)$ = 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 $M^B_{max}$ = -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.

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Kuntal Misra, D. K. Sahu, G. C. Anupama, Kavita Pandey. 2008-04-28. Photometric and Spectroscopic study of a highly reddened type Ia supernova SN 2003hx in NGC 2076. https://doi.org/10.1111/j.1365-2966.2008.13398.x

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