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Table 3

BVRcIc photometry of SN 2012aa.

UT Date JD − Phasea B K BB b V K VV b R c K RR b I c K II b Seeingc Telescoped
(yyyy/mm/dd) 2 450 000 (day) (mag) (mag) (mag) (mag) (mag) (mag) (mag) (mag) (′′)
2012/02/11.09 5968.59 +16.59 18.87 ± 0.07 0.05 18.20 ± 0.09 0.08 18.09 ± 0.08 0.19 17.91 ± 0.06 0.20 2.9 ST
2012/02/19.24 5976.74 +24.74 19.32 ± 0.05 0.04 18.47 ± 0.31 0.04 18.19 ± 0.04 0.18 17.91 ± 0.05 0.17 2.3 ST
2012/02/20.21 5977.71 +25.71 19.25 ± 0.07 0.04 18.56 ± 0.06 0.03 18.21 ± 0.05 0.17 18.02 ± 0.06 0.17 2.5 ST
2012/02/22.12 5979.62 +27.62 19.29 ± 0.03 0.05 18.63 ± 0.06 0.02 18.26 ± 0.03 0.17 18.06 ± 0.03 0.16 2.1 ST
2012/02/23.23 5980.73 +28.73 − − 18.56 ± 0.07 0.01 18.35 ± 0.09 0.17 18.18 ± 0.04 0.15 3.1 ST
2012/03/03.12 5989.62 +37.62 19.74 ± 0.08 − 0.05 18.76 ± 0.03 0.02 18.33 ± 0.03 0.20 18.30 ± 0.25 0.16 2.8 ST
2012/03/11.05 5997.55 +45.55 19.51 ± 0.18 − 0.16 18.74 ± 0.19 0.03 18.23 ± 0.07 0.23 18.18 ± 0.04 0.17 2.2 ST
2012/03/14.09 6000.59 +48.59 19.75 ± 0.08 − 0.12 18.74 ± 0.05 0.03 18.16 ± 0.08 0.23 18.07 ± 0.03 0.17 2.5 CT
2012/03/23.23 6009.73 +57.73 > 19.55 − 0.08 − 0.04 18.61 ± 0.04 0.24 18.30 ± 0.05 0.17 2.4 ST
2012/03/24.21 6010.71 +58.71 19.74 ± 0.07 − 0.09 18.78 ± 0.05 0.04 18.73 ± 0.05 0.24 18.25 ± 0.07 0.16 2.0 ST
2012/03/26.14 6012.64 +60.64 20.06 ± 0.05 − 0.09 18.98 ± 0.11 0.05 18.57 ± 0.08 0.24 18.36 ± 0.06 0.16 2.8 ST
2012/03/28.08 6014.58 +62.58 21.04 ± 0.11 − 0.09 19.08 ± 0.10 0.05 19.08 ± 0.06 0.24 18.85 ± 0.04 0.15 1.5 CT
2012/04/02.09 6019.59 +67.59 21.54 ± 0.15 − 0.09 19.38 ± 0.03 0.05 19.15 ± 0.16 0.24 18.92 ± 0.22 0.15 3.1 ST
2012/04/13.13 6030.63 +78.63 − − − − 19.66 ± 0.14 0.23 − − 3.1 ST
2012/04/17.09 6034.59 +82.59 21.85 ± 0.09 − 0.10 20.09 ± 0.06 0.06 19.45 ± 0.08 0.23 − − 2.6 CT
2012/04/22.90 6040.40 +88.40 − − 0.10 19.87 ± 0.05 0.06 19.84 ± 0.05 0.22 19.31 ± 0.16 0.12 1.9 NTT
2012/04/26.02 6043.52 +91.52 21.74 ± 0.18 − 0.11 20.01 ± 0.12 0.06 19.87 ± 0.06 0.22 19.57 ± 0.08 0.11 3.1 ST
2012/04/28.01 6045.51 +93.51 21.91 ± 0.10 − 0.12 19.90 ± 0.06 0.06 20.16 ± 0.13 0.22 19.55 ± 0.10 0.10 3.1 ST
2012/04/29.97 6047.47 +95.47 22.03 ± 0.53 − 0.12 20.20 ± 0.10 0.06 20.22 ± 0.08 0.22 19.57 ± 0.12 0.09 2.9 ST
2012/04/30.89 6048.39 +96.39 21.61 ± 0.17 − 0.12 20.31 ± 0.08 0.06 19.90 ± 0.09 0.22 − − 1.7 NTT
2012/05/13.98 6061.48 +109.48 > 21.00 − 0.13 20.13 ± 0.09 0.07 20.33 ± 0.20 0.20 19.65 ± 0.13 0.07 3.8 ST
2012/05/24.88 6072.38 +120.38 > 21.04 − 0.14 20.53 ± 0.12 0.07 20.44 ± 0.38 0.20 19.96 ± 0.21 0.05 2.4 ST

Notes. Magnitude uncertainties are calculated after adding the 1σ uncertainty in photometry and the error associated with calibration in quadrature.

(a)

The event was dicovered on JD 2 455 956.04. However, the V-band maximum was estimated to be about 4 d prior to discovery. Here the phases are calculated with respect to the epoch of V-band maximum in the observer frame, corresponding to JD 2 455 952. For details, see Sect. 4.

(b)

K-corrections are determined for all epochs with existing spectral information and by interpolating/extrapolating for other epochs.

(c)

FWHM of the stellar PSF in the V band.

(d)

ST: 1.04 m Sampurnanand Telescope + imaging Camera at ARIES, India; CT: 1.82 m Copernico Telescope + AFOSC, Asiago Observatory; NTT: 3.6 m New Technology Telescope + EFOSC2, ESO, Chile.

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