First detection of the [CII] 158 µm line in the intermediate-velocity cloud Draco

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Volume 686 (June 2024)

A&A, 686 (2024) A109

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Table 4

Spider observational [C II] and CO data.

	CII	¹²CO 1→0				¹²CO 2→1				N(H)	T_d
	I	T_mb	υ	∆v	I	T_mb	υ	∆υ	I
	$[\frac{Kkm}{s}]$ $\left[ {{{{\rm{Kkm}}} \over {\rm{s}}}} \right]$	[K]	$[\frac{km}{s}]$ $\left[ {{{{\rm{km}}} \over {\rm{s}}}} \right]$	$[\frac{km}{s}]$ $\left[ {{{{\rm{km}}} \over {\rm{s}}}} \right]$	$[\frac{Kkm}{s}]$ $\left[ {{{{\rm{Kkm}}} \over {\rm{s}}}} \right]$	[K]	$[\frac{km}{s}]$ $\left[ {{{{\rm{km}}} \over {\rm{s}}}} \right]$	$[\frac{km}{s}]$ $\left[ {{{{\rm{km}}} \over {\rm{s}}}} \right]$	$[\frac{Kkm}{s}]$ $\left[ {{{{\rm{Kkm}}} \over {\rm{s}}}} \right]$	[10²⁰ cm⁻²]	[K]
Spider 1 a	<0.06	1.57	4.18	0.92	1.54	0.85	4.67	0.81	0.73	6.30	17.7
Spider 1 b	<0.06	0.31	1.59	0.77	0.26	0.22	2.12	0.65	0.16	6.30	17.7
Spider 2	<0.06	–	–	–	–	–	–	–	–	2.4	16.8

Notes. The CO line parameters were determined from a Gaussian line fit with two components. The error (for both CO lines) of the line integrated intensity is 0.035 K km s⁻¹ and 0.025 km s⁻¹ for the linewidth. There was no CO detection at the Spider 2 position. The last two columns give the hydrogen column density and temperature.

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