Journal of The Korean Astronomical Society (천문학회지)
- Volume 28 Issue 1
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- Pages.31-43
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- 1995
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- 1225-4614(pISSN)
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- 2288-890X(eISSN)
UBVRI CCD PHOTOMETRY OF THE TYPE Ic SUPERNOVA SN 1994I IN M51: THE FIRST TWO MONTHS
- LEE MYUNG GYOON (Department of Astronomy, Seoul National University) ;
- KIM EUNHYEUK (Department of Astronomy, Seoul National University) ;
- KIM SANG CHUL (Department of Astronomy, Seoul National University) ;
- KIM SEUNG LEE (Department of Astronomy, Seoul National University) ;
- PARK WON KEE (Department of Astronomy, Seoul National University) ;
- PYO TAE SOO (Department of Astronomy, Seoul National University)
- Published : 1995.04.01
Abstract
We present UBVRI CCD photometry of the Type Ie supernova SN 19941 in M51 which was discovered on April 2, 1994 (UT). UBVRI CCD photometry of SN 1994 I were obtained for the period of the first two months from April 4, 1994, using the Seoul National University Observatory 60 cm telescope. The light curves of SN 19941 show several interesting features: (a) SN 19941 reaches the maximum brightness at B-band on April 8.23 (B = 13.68 mag), at V-band on April 9.10 (V = 12.89 mag), and at I-band on April 10.32 (I = 12.48 mag); (b) The light curves around the maximum brightness are much narrower than those of other types of supernovae; (c) The light curves after the peak decline more steeply than those of other types of supernovae; and (d) The colors get redder from
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