Table 1: Log of spectroscopic observations of M31N 2005-09c.

Date	JD	Spectral	Exposure
	2 453 600.0+	Range(Å)	time (s)
28 Sep. 05	42.307	4750-6825	600
	42.315	4750-6825	1800
	42.338	4750-6825	3000
29 Sep. 05	43.304	3565-5675	3000
	43.417	3565-5675	3500
	43.491	3565-5675	3500
	43.349	5090-7160	3000
	43.542	5090-7160	3000
	43.260	4750-6825	3000
03 Oct. 05	47.390	4750-6825	3300
	47.446	6315-8365	3300
05 Oct. 05	49.264	3565-5675	3600
	49.312	3565-5675	3600
	49.370	4750-6825	3600
	49.414	4750-6825	3600
	49.471	6315-8365	3600