**Table 2:** The Mid-IR properties of SMG around the z=2.38 galaxy protocluster J2143-4423.
Nickname	MIPS 24 ${\mu {\rm m}}$					IRAC
	RA	Dec	$S_{\nu} \pm\sigma_{\nu}$	Offset	P^a	$S_{3.6\,\mu {\rm m}}$	$S_{4.5\,\mu {\rm m}}$	$S_{5.8\,\mu {\rm m}}$	$S_{8.0\,\mu {\rm m}}$
	(J2000)		[ $\mathrm{\mu Jy}$ ]	$^{\prime \prime }$		[ $\mathrm{\mu Jy}$ ]	[ $\mathrm{\mu Jy}$ ]	[ $\mathrm{\mu Jy}$ ]	[ $\mathrm{\mu Jy}$ ]
L01	21 42 39.64	-44 28 17.26	$81.4 \pm 5.3$	2.9	0.09	$4.1 \pm 0.3$	$4.7 \pm 0.6$		$21.0 \pm 4.4$
L02	21 42 21.01	-44 24 51.89	$911.0 \pm 5.4$	2.3	0.00	$190.8 \pm 0.7$	$135.1 \pm 0.7$	$139.1 \pm 3.1$	$92.7 \pm 4.6$
L03	21 42 47.54	-44 27 29.19	$51.1 \pm 5.1$	5.3	0.19	$4.4 \pm 0.4$	$4.9 \pm 0.5$	$10.4 \pm 2.7$
L04	21 42 22.07	-44 28 09.02	$362.0 \pm 5.5$	3.3	0.02	$27.8 \pm 0.6$	$29.5 \pm 0.6$	$45.3 \pm 2.9$	$34.1 \pm 4.5$
L05	21 42 31.74	-44 23 42.51	$230.0 \pm 5.6$	6.2	0.10	$15.3 \pm 1.2$	$14.9 \pm 1.9$	$22.7 \pm 3.5$	$22.7 \pm 4.4$
L06	21 42 34.97	-44 27 08.70	$292.0 \pm 5.7$	3.4	0.03	$10.8\pm1.1$	$13.9 \pm 1.2$	$19.9 \pm 4.5$	$24.0 \pm 5.3$
L07	21 42 50.74	-44 30 46.07	$175.0 \pm 6.6$	5.5	0.11	$2.4 \pm 0.6$	$3.3 \pm 0.7$	$10.2 \pm 3.1$
	21 42 51.49	-44 30 43.18	$1640.0 \pm 5.9$	2.6	0.00	$105.0 \pm 0.6$	$163.0 \pm 0.9$	$293.2 \pm 2.8$	$475.2 \pm 5.5$
L08	21 42 59.27	-44 25 00.16	$355.0 \pm 5.2$	6.5	0.07	$17.3 \pm 0.4$	$22.9 \pm 0.6$	$32.0 \pm 2.6$	$21.0 \pm 4.5$
L09
L10
L11	21 42 44.73	-44 23 28.13	$659.0 \pm 5.5$	2.9	0.01	$44.5 \pm 2.2$	$57.7 \pm 1.4$	$70.3 \pm 5.8$	$46.3 \pm 6.9$
L12	21 42 28.95	-44 22 11.12	$99.4 \pm 5.7$	6.0	0.17	$5.0 \pm 0.5$	$7.1 \pm 0.6$	$11.2 \pm 3.0$	$15.7 \pm 4.7$
L13	21 43 03.06	-44 25 12.13	$109.0 \pm 5.2$	8.0	0.19	$6.3 \pm 0.3$	$7.8 \pm 0.6$
	21 43 02.64	-44 25 03.15	$238.0 \pm 5.2$	3.4	0.04	$13.9 \pm 0.3$	$16.1 \pm 0.6$	$22.2 \pm 3.0$	$18.7 \pm 4.7$
L14	21 42 31.91	-44 31 30.09	$155.0 \pm 5.1$	5.5	0.12	$32.5 \pm 0.4$	$21.6 \pm 0.5$	$22.9 \pm 2.6$	$23.3 \pm 4.2$
L15	21 42 49.30	-44 30 29.73	$372.0 \pm 5.8$	2.8	0.02	$24.5 \pm 0.4$	$33.4 \pm 0.6$	$53.3 \pm 3.0$	$32.0 \pm 4.4$
L16	21 42 40.91	-44 25 17.56	$143.0 \pm 5.6$	2.7	0.05	$9.9 \pm 0.4$	$11.6 \pm 0.7$	$14.1 \pm 3.0$
L17	21 42 09.94	-44 26 06.06	$59.3 \pm 5.7$	4.4	0.16	$4.4 \pm 0.3$	$6.0 \pm 0.6$
L18	21 42 33.58	-44 22 09.80	$229.0 \pm 5.1$	7.9	0.13	$8.7 \pm 0.7$	$11.3 \pm 0.9$	$16.1 \pm 2.8$
	21 42 34.81	-44 22 10.35	$180.0 \pm 5.4$	6.4	0.13
L19	21 42 16.07	-44 28 49.50	$139.0 \pm 5.8$	2.3	0.04	$9.9 \pm 0.5$	$13.4 \pm 0.8$	$20.2 \pm 3.0$	$28.4 \pm 5.1$
L20	21 42 41.21	-44 30 47.57	$113.0 \pm 5.4$	4.0	0.11	$33.5 \pm 0.4$	$31.0 \pm 0.5$	$21.0 \pm 2.7$	$92.4 \pm 4.3$
	21 42 41.12	-44 30 37.23	$62.8 \pm 5.4$	7.9	0.20	$8.1 \pm 0.5$	$12.7 \pm 0.6$	$23.6 \pm 3.1$	$29.6 \pm 4.8$
	21 42 40.47	-44 30 51.02	$78.1 \pm 5.4$	7.2	0.19	$71.0 \pm 0.7$	$45.6 \pm 0.8$	$40.9 \pm 2.7$	$26.6 \pm 4.7$
L21
L22
L23
L24	21 42 52.84	-44 24 55.95	$94.6 \pm 5.9$	2.6	0.07	$31.5 \pm 0.4$	$21.4 \pm 0.5$	$29.6 \pm 3.3$
	21 42 52.85	-44 24 56.16	$97.7 \pm 7.3$	2.0	0.05
L25
L26	21 42 26.22	-44 21 52.39	$172.0 \pm 5.9$	4.8	0.09	$17.1 \pm 0.4$	$22.3 \pm 0.6$	$41.9 \pm 3.0$	$23.7 \pm 5.0$
L27	21 43 11.73	-44 26 16.94	$56.5 \pm 5.6$	2.0	0.07	$16.3 \pm 0.9$	$16.7 \pm 0.7$	$18.1 \pm 3.2$	$18.9 \pm 4.7$
L28	21 42 37.36	-44 25 29.41	$79.4 \pm 5.6$	6.7	0.19	$19.7 \pm 0.4$	$17.9 \pm 0.5$	$21.0 \pm 2.9$
	21 42 37.98	-44 25 35.86	$71.8 \pm 5.7$	6.5	0.19
L29	21 43 04.22	-44 22 06.52	$206.0 \pm 5.4$	7.0	0.12	$56.2 \pm 0.6$	$66.8 \pm 0.6$	$65.6 \pm 3.0$	$47.1 \pm 4.3$
L30
L31	21 42 31.05	-44 26 44.61	$359.0 \pm 5.8$	2.4	0.01	$82.4 \pm 2.0$	$59.6 \pm 1.4$	$63.9 \pm 3.7$	$27.3 \pm 4.8$
	21 42 30.73	-44 26 43.02	$105.0 \pm 6.1$	5.3	0.15
L32

^a P was computed with search radius of 8 $^{\prime \prime }$ . Reliable identifications (P<0.05) are listed in bold.

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