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The Type la Supernova 2001V in NGC 3987

J. Vinko·I. B. Biro·B. Csak·Sz. Csizmadia·A. Derekas·G. Furesz·Z. Heiner·K. Sarneczky·B. Sipocz·G. M. Szabo·R. Szabo·K. Sziladi·K. Szatmary
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Abstract

CCD photometry of the type Ia SN 2001V occured in the edge-on spiral galaxy NGC 3987 is presented. The observations made through Johnson-Cousins BVRI filters were collected from Feb. 24 (t = -8 days, with respect to B-maximum), up to May 5 (t = +62 days). The light curves are analyzed with the revised Multi-Colour Light Curve Shape (MLCS) method by fitting template vectors to the observed light curves simultaneously. The reddening of SN 2001V is estimated to be E(B-V)=0.05 mag, while the galactic component is E(B-V) = 0.02 mag, suggesting that part of the reddening may be due to the ISM in the host galaxy. The Delta parameter in MLCS converged to -0.47 mag, indicating that this SN was overluminous relative to the majority of Type Ia SNe. The inferred distance to its host galaxy, NGC 3987, is 74.5 \pm 5 Mpc, which is in good agreement with recently determined kinematic distances, based on radial velocity corrected for Virgo-infall and Hubble constant H_0 = 65 km/s/Mpc.

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J. Vinko, I. B. Biro, B. Csak, Sz. Csizmadia, A. Derekas, G. Furesz, Z. Heiner, K. Sarneczky, B. Sipocz, G. M. Szabo, R. Szabo, K. Sziladi, K. Szatmary. 2002-10-08. The Type la Supernova 2001V in NGC 3987. https://doi.org/10.1051/0004-6361%3A20021469

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