Issue |
A&A
Volume 397, Number 1, January I 2003
|
|
---|---|---|
Page(s) | 115 - 120 | |
Section | Extragalactic astronomy | |
DOI | https://doi.org/10.1051/0004-6361:20021469 | |
Published online | 11 December 2002 |
The Type Ia Supernova 2001V in NGC 3987*
1
Department of Optics & Quantum Electronics, University of Szeged, PO Box 406, Szeged, 6701 Hungary
2
Guest Observer, Piszkéstető 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
Corresponding author: J. Vinkó, vinko@physx.u-szeged.hu
Received:
2
July
2002
Accepted:
7
October
2002
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 ( days, with respect to B-maximum),
up to May 5 (
days).
The light curves are analyzed with the revised Multi-Colour Light Curve Shape (MLCS)
method ([CITE]) by fitting template vectors to the observed light curves
simultaneously. The reddening of SN 2001V is estimated to be
mag, while
the galactic component is
mag (Schlegel et al. [CITE]), suggesting that
part of the reddening may be due to the ISM in the host galaxy.
The Δ 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
Mpc, which is in good agreement with
recently determined kinematic distances, based on radial velocity corrected for
Virgo-infall and Hubble constant
km s-1Mpc-1.
Key words: stars: supernovae: individual: SN 2001V
© ESO, 2003
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