EDP Sciences
Free access
Issue
A&A
Volume 397, Number 1, January I 2003
Page(s) 115 - 120
Section Galactic structure and dynamics
DOI http://dx.doi.org/10.1051/0004-6361:20021469


A&A 397, 115-120 (2003)
DOI: 10.1051/0004-6361:20021469

The Type Ia Supernova 2001V in NGC 3987

J. Vinkó1, 2, I. B. Bíró3, B. Csák4, 2, Sz. Csizmadia5, A. Derekas4, 2, G. Furész4, 2, Z. Heiner1, 2, K. Sárneczky1, 2, 6, B. Sipocz2, Gy. Szabó4, 2, 6, R. Szabó5, K. Sziládi1, 2, 6 and K. Szatmáry4

1  Department of Optics & Quantum Electronics, University of Szeged, PO Box 406, Szeged, 6701 Hungary
2  Guest Observer, Piszkésteto Station, Konkoly Observatory, Hungary
3  Baja Observatory, PO Box 766, Baja, 6500 Hungary
4  Department of Experimental Physics, University of Szeged, Dóm tér 9., Szeged, 6720 Hungary
5  Konkoly Observatory of the Hungarian Academy of Sciences, PO Box 67, Budapest, 1525 Hungary
6  Visiting Astronomer, German-Spanish Astronomical Centre, Calar Alto, Spain

(Received 2 July 2002 / Accepted 7 October 2002)

Abstract
CCD photometry is presented of the type Ia SN 2001V occurred in the edge-on spiral galaxy NGC 3987. 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 (Riess et al. 1998) 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 (Schlegel et al. 1998), 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 H0 = 65 km s -1Mpc -1.


Key words: stars: supernovae: individual: SN 2001V

Offprint request: J. Vinkó, vinko@physx.u-szeged.hu

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