[C II] 158 μm self-absorption and optical depth effects

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Volume 636 (April 2020)

A&A, 636 (2020) A16

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Table 2

Observational parameters for the sources.

Sources	Observing	Band	RA	Dec	T_sys	Total	pwv^(a)	Δv	rms
	date	config.	(J2000)	(J2000)		obs. time	(zenith)		(noise)
			(h:m:s)	(°:′:′′)	(K)	(min)	(μm)	(km s⁻¹)	(K)
M43	12-08-2015	L1^(b)/LFA^(c)	05:35:31.36	−05:16:02.6	2800	60	12	0.1	0.15–0.20
Horsehead PDR	12-17-2016	L1^(b)/LFA^(c)	05:40:54.27	−02:28:00.0	2200	80	8	0.3	0.08–0.10
	02-10-2017	L1^(b)/LFA^(c)	05:40:54.27	−02:28:00.0	2100	74	11	0.3	0.08–0.10
Monoceros R2	11-04-2016	L2^(d)/HFA^(e)	06:07:46.20	−06:23:08.0	2430	32	13	0.3	0.17–0.30
M17SW	06-09-2016	L1^(b)/LFA^(c)	18:20:27.60	−16:12:00.9	2800	84	9	0.3	0.18–0.33

Notes. ^(a) Precipitable water vapor.^(b)L1 correspondsto the old GREAT L1 band between 1200 and 1500 GHz. ^(c) LFA to the upGREAT Low Frequency Array operating between 1810 and 2070 GHz. ^(d) L2 to the old GREAT L2 band at 1900 GHz. ^(e)HFA to the upGREAT High Frequency Array operating at 4744 GHz.

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