The mean infrared emission of Sagittarius A* | Astronomy & Astrophysics (A&A)

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Table 2

Observations of the GC in the L′-band with NaCo, used in this work.

UTC Date	UTC Time	Good data^a	t_{on source}^b	f_{mean,SgrA ∗}^c	f_{median,SgrA ∗}^d	f_S2^e

2006 Mar. 28	05:60–10:29	0.74	850.5	0.64	0.82	1.47
2006 May 29	04:39–10:51	0.45	2400	1.21	0.97	1.86
2006 May 30	06:05–10:24	0.52	2400	1.72	1.62	1.96
2006 May 31	08:29–10:37	0.76	2490	1.65	1.65	2.07
2006 Jun. 02	04:47–07:01	0.53	1890	2.23	2.10	1.88
2006 Jun. 04	05:03–10:22	0.40	3360	1.86	1.85	2.10
2006 Jun. 06	04:49–10:33	0.39	3360	1.11	1.04	2.02
2007 Apr. 01	05:18–06:43	0.95	3420	0.92	0.90	1.85
2007 Apr. 03	04:57–06:27	1.00	3600	1.17	1.22	1.86
2007 Apr. 04	04:50–06:10	0.93	3000	3.14	3.08	1.66
2007 Apr. 05	08:01–10:35	0.88	4890	1.51	1.39	2.08
2007 Apr. 06	05:19–06:55	0.89	3210	0.72	0.74	1.68
2007 May 23	04:39–10:36	0.26	3060	1.82	1.57	2.16
2007 Jul. 20	01:35–02:11	0.94	1350	1.25	1.11	2.06
2007 Jul. 22	23:08–04:51	0.88	7590	1.30	1.16	1.97
2008 May 26	05:43–10:38	0.60	3720	3.93	3.97	1.88
2008 May 30	06:41–10:41	0.54	1470	1.27	1.18	1.99
2009 Apr. 01	06:11–09:01	0.95	5700	1.69	1.54	1.63
2009 Apr. 05	07:02–10:35	0.62	3060	0.91	0.90	1.76

Notes. The detector integration time (DIT) was 0.2 s in all cases, except 28 Mar. 2006, when it was 0.175 s;

^(a)

fraction of data used; rest rejected because of low quality;

^(b)

total integration time on source in seconds, excluding rejected data;

^(c)

measured flux density of Sgr A* on mean images, in mJy, not corrected for extinction;

^(d)

measured flux density of Sgr A* on median images, in mJy, not corrected for extinction;

^(e)

measured flux density of S2 on mean images, in mJy, not corrected for extinction.

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