Optical constraints on the coldest metal-poor population

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Volume 698 (May 2025)

A&A, 698 (2025) A141

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Table D.1.

Logs of new optical observations of the Accident and the other 11 metal-poor T dwarf candidates.

Name	MJD	Seeing	Moon	Instrument	Filters	On-source integration time
The Accident	60466.07	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 8	Dark	GTC/HiPERCAM	u′g′r′i′z′	60.5s×124 = 7502s
The Accident	60473.98	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 8	Grey-Dark	GTC/HiPERCAM	u′g′r′i′z′	60.9s×180 = 10962s
W0156	60565.35	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 6	Dark	VLT/FORS2	z_Gunn	120s×24 = 2880s
Ross 19B	60565.30	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 5	Dark	VLT/FORS2	z_Gunn	120s×24 = 2880s
W0505	60578.21	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 7	Grey	VLT/FORS2	z_Gunn	120s×20 = 2400s
W0523	60227.20	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 8	Grey	GTC/OSIRIS+	z′	60s×48 = 2880s
W0711	60565.38	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 6	Dark	VLT/FORS2	z_Gunn	60s×8 = 480s
W0738	60407.13	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 6	Dark	VLT/FORS2	z_Gunn	120s×16 = 1920s
W0905	60606.19	1 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 0	Bright	GTC/OSIRIS+	z′	60s×48 = 2880s
W1019	60468.06	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 7	Dark	VLT/FORS2	z_Gunn	60s×8 = 480s
Wolf 1130C	60210.97	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 8	Grey	GTC/OSIRIS+	z′	60s×48 = 2880s
W2014	60562.22	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 9	Dark	VLT/FORS2	z_Gunn	120s×16 = 1920s
W2207	60622.16	0 $\overset{″}{.}$ $\mathop {.}\limits ^{\prime\prime }$ 7	Dark	VLT/FORS2	z_Gunn	120s×24 = 2880s

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