Spectrophotometric time series of SN 2011fe from the Nearby Supernova Factory

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Table 1

Observing log for SNIFS spectra of SN 2011fe.

t − t_expl^a	t − t_max^b	UTC date	MJD^c	Photometricity^d	Exp. time (s)	Airmass	Seeing (′′)


2.6	−15.2	2011 Aug. 26.3	55 799.3	• (4)	2 × 300	1.87	2.24
3.5	−14.3	2011 Aug. 27.2	55 800.2	• (1)	2 × 300	1.74	1.04
4.5	−13.3	2011 Aug. 28.2	55 801.2	• (3)	2 × 300	1.76	1.29
5.6	−12.2	2011 Aug. 29.3	55 802.3	• (1)	2 × 250	1.87	1.01
6.5	−11.3	2011 Aug. 30.2	55 803.2	• (1)	2 × 250	1.82	0.98
7.5	−10.3	2011 Aug. 31.2	55 804.2	• (3)	2 × 250	1.81	0.94
8.5	−9.3	2011 Sep. 01.2	55 805.2	• (1)	2 × 250	1.88	1.09
9.5	−8.3	2011 Sep. 02.2	55 806.2	• (2)	2 × 250	1.83	1.95
10.6	−7.2	2011 Sep. 03.3	55 807.3	° (1)	2 × 250	2.07	1.88
11.5	−6.3	2011 Sep. 04.2	55 808.2	• (4)	2 × 250	1.87	2.07
12.5	−5.3	2011 Sep. 05.2	55 809.2	• (1)	2 × 250	1.88	1.21
16.5	−1.3	2011 Sep. 09.2	55 813.2	• (3)	2 × 250	2.08	1.53
17.5	−0.3	2011 Sep. 10.2	55 814.2	• (3)	2 × 250	1.94	0.99
18.5	0.7	2011 Sep. 11.2	55 815.2	• (3)	2 × 250	1.95	1.15
19.5	1.7	2011 Sep. 12.2	55 816.2	• (4)	2 × 250	1.99	1.24
20.5	2.7	2011 Sep. 13.2	55 817.2	• (4)	2 × 250	1.98	0.96
21.5	3.7	2011 Sep. 14.2	55 818.2	• (1)	2 × 250	2.17	1.94
24.5	6.7	2011 Sep. 17.2	55 821.2	° (3)	2 × 300	2.18	1.01
26.5	8.7	2011 Sep. 19.2	55 823.2	° (2)	2 × 250	2.18	1.56
29.5	11.7	2011 Sep. 22.2	55 826.2	° (1)	2 × 250	2.20	1.21
31.5	13.7	2011 Sep. 24.2	55 828.2	• (2)	2 × 300	2.34	1.06
34.5	16.7	2011 Sep. 27.2	55 831.2	° (2)	2 × 250	2.36	1.19
36.5	18.7	2011 Sep. 29.2	55 833.2	° (3)	2 × 250	2.60	1.37
39.5	21.7	2011 Oct. 02.2	55 836.2	° (1)	2 × 250	2.75	1.51
41.5	23.7	2011 Oct. 04.2	55 838.2	° (1)	2 × 350	2.79	1.68
91.9	74.1	2011 Nov. 23.6	55 888.6	° (4)	1 × 250	2.25	1.29
94.9	77.1	2011 Nov. 26.6	55 891.6	° (3)	1 × 250	2.04	1.08
96.9	79.1	2011 Nov. 28.6	55 893.6	° (3)	2 × 250	2.05	1.91
99.9	82.1	2011 Dec. 01.6	55 896.6	° (4)	3 × 250	2.10	1.35
104.9	87.1	2011 Dec. 06.6	55 901.6	° (6)	3 × 300	2.16	0.93
106.9	89.1	2011 Dec. 08.6	55 903.6	° (6)	3 × 300	1.91	1.24
114.9	97.1	2011 Dec. 16.6	55 911.6	° (7)	2 × 300	1.71	1.38

Notes.In the case of multiple consecutive observations in a single night, the phases, dates and airmass correspond to the middle of the first exposure, while the seeing is the average value.

^(a)

Days relative to the date of explosion derived by Nugent et al. (2011b): MJD 55 796.696.

^(b)

Phase, observer-frame days relative to B-band maximum light: MJD 55814.51.

^(c)

JD – 2 400 000.5

^(d)

• photometric, ° non-photometric, (#) number of standard stars observed during the night and used for atmospheric extinction and telluric absorption correction.

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