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Table A.1

Main MIRI-MRS observational details of the sample of JOYS sources in the PID 1290 JWST GTO program.

ID Archive name Sources RA
J2000		 Dec
J2000		 Dith Exposure time (s) Background Mosaic
1 B1b-S - 03:33:17.953 +31:09:31.49 2 1005, 1005, 1005 - 1×1
2 B1b B1-b 03:33:20.341 +31:07:21.36 2 200, 200, 200 B1b-S 1×1
3 B1c-1 B1-c 03:33:17.953 +31:09:31.49 4 2009, 4029, 2009 B1b-S 1×1
4 B1c-2 - 03:33:18.211 +31:09:28.63 2 200, 200, 200 B1b-S 1×1
5 B1a B1-a-1, 2 03:33:16.669 +31:07:54.90 2 200, 200, 200 B1b-S 1×1
6 IRAS4B IRAS4B 03:29:12.012 +31:13:07.07 2 200, 200, 200 B1b-S 1×1
7 IRAS4B-b1 - 03:29:12.040 +31:13:01.35 2 200, 200, 200 B1b-S 1×1
8 IRAS4A-b1 - 03:29:10.595 +31:13:19.40 2 200, 200, 200 B1b-S 1×1
9 L1448mm L1448-mm 03:25:38.761 +30:44:08.16 2 200, 200, 200 B1b-S 2×3
10 Emb-8 Per-emb 8 03:44:43.982 +32:01:35.21 2 200, 200, 200 B1b-S 1×1
11 Dark-Taurus - 04:39:32.290 +26:05:14.50 1 200, 200, 200 - 1×1
12 L1527-1 L1527 IRS 04:39:53.955 +26:03:09.56 2 1000, 1000, 1000 Dark-Taurus 1×1
13 L1527-2 - 04:39:54.245 +26:03:11.67 2 200, 200, 200 Dark-Taurus 1×1
14 TMC1A TMC1-A 04:39:35.203 +25:41:45.17 2 216, 216, 216 Dark-Taurus 1×1
15 TMC1 TMC1-W,E 04:41:12.700 +25:46:34.80 2 200, 200, 200 Dark-Taurus 1×1
16 Dark-Serpens - 18:29:48.250 +01:14:26.20 2 200, 200, 200 - 1×1
17 SVS4-5 SVS 4-5 18:29:57.630 +01:13:00.20 2 605, 605, 605 Dark-Serpens 1×1
18 SerpSMM3 Ser-SMM3 18:29:59.302 +01:14:00.97 2 200, 200, 200 Dark-Serpens 1×1
19 SerpEmb8N - 18:29:49.269 +01:16:52.62 2 200, 200, 200 Dark-Serpens 1×1
20 SerpS68N Ser-S68N-N, S 18:29:48.074 +01:16:43.80 2 200, 200, 200 Dark-Serpens 1×1
21 SerpSMM1-2 Ser-SMM1-b1, b2 18:29:49.602 +01:15:21.90 2 200, 200, 200 Dark-Serpens 1×1
22 SerpSMM1-1 Ser-SMM1-a 18:29:49.874 +01:15:19.79 4 200, 200, 200 Dark-Serpens 1×1
23 Dark-BHR71 - 12:01:30:720 -65:08:44.60 2 200, 200, 200 - 1×1
24 BHR71-IRS2 BHR71-IRS2 12:01:34.000 -65:08:47.00 2 200, 200, 200 Dark-BHR71 1×1
25 BHR71-IRS1 BHR71-IRS1 12:01:36.548 -65:08:53.59 2 200, 200, 200 Dark-BHR71 3×3
26 G28IRS2 G28IRS2 18:42:51.967 -3:59:53.985 2 200, 200, 200 - 1×1
27 G28P1 A, B 18:42:50.679 -4:03:14.087 2 799, 799, 799 - 2×2
28 G28S - 18:42:46.414 -4:04:15.404 2 200, 200, 200 - 1×1
29 Dark-IRAS23385 - 23:41:11.033 61:10:28.928 2 200, 200, 200 - 1×1
30 IRAS23385 A, B 23:40:54.503 61:10:27.846 2 800, 800, 800 Dark-IRAS23385 2×2
31 Dark-IRAS18089 - 18:11:44.112 -17:31:03.047 2 200, 200, 200 - 1×1
32 IRAS18089 A, B, C 18:11:51.447 -17:31:27.285 2 400, 400, 400 Dark-IRAS18089 2×1
33 Dark-G31 - 18:47:32.382 -1:13:44.317 2 200, 200, 200 - 1×1
34 G31 G31 18:47:34.308 -1:12:46.000 2 200, 200, 200 Dark-G31 1×1

Notes. The coordinates are the center position of the observation, not the positions of the protostars. The exposure time is the exposure time divided over the A,B,C gratings. Dith stands for Dithers.

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