Imaging diffuse clouds: bright and dark gas mapped in CO

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Table 1

Continuum target, line of sight and map field properties¹.

Target	RA	Dec	l	b	Map	E_B − V²	N (H I)³	N(H₂)⁴	f_H₂⁷	W_CO	⟨ W_CO ⟩
	(J2000)	(J2000)			size	mag	10²⁰ cm^-2	10²⁰ cm^-2		K km s^-1	K km s^-1

B0736+017	07:39:18.03	01:37:04.6	216.99	11.38	15′	0.13	7.7	3.3	0.46	0.8	0.4
B0954+658	09:58:47.24	65:33:54.7	145.75	43.13	30′	0.12	5.3⁵	4.8	0.64	1.6	0.6
B1730-130	17:33:02.66	–13:04:49.5	12.03	10.81	30′	0.53	28.3	4.3	0.23	0.4	0.4
B1928+738	19:27:48.58	73:58:01.6	105.63	23.54	20′	0.13	7.2⁵	2.7	0.43	<0.2	0.0
B1954+513	19:55:42.69	51.31:48.5	85.30	11.76	30′	0.15	12.7⁵	5.0	0.44	1.6	0.3
B2251+158	22:53:57.71	16:08:53.4	86.11	–38.18	30′	0.10	4.6	1.2	0.34	0.8	0.2

B0528+134	05:30:46.41	13:31:55.1	191.37	–11.01	30′	0.89	30.9	7.9	0.34	2.2	2.6
B2200+420	22:02:43.24	42:16:39.9	92.59	–10.44	30′	0.33	9.7	8.8	0.66	5.8	3.7

B0212+735	02:17:30.81	73:49:32.6	128.93	11.96	30′	0.76	32.1	18.6	0.54	5.8	1.56
B0224+671	02:28:50.03	67:21:31.3	132.12	6.23	30′	1.00	38.3	9.2	0.32	1.9	4.0
B0355+508	03:59:29.73	50:57:50.1	150.38	–1.60	30′x 50′	(1.50)⁶	111.3	24.2	0.30	14.3	4.2

Mean						0.41	17.7	6.58	0.43	2.09	1.38

Notes.

⁽¹⁾

Sources are placed in three groups according to their discussion in Sects. 3−5;

⁽²⁾

from Schlegel et al. (1998);

⁽³⁾

N(H I) = 2.6 × 10²⁰ cm^-2^∫τ(H I)dv (see Sect. 2) except where noted;

⁽⁴⁾

N(H₂) = N(HCO⁺)/3 × 10^-9 see Sect. 2.7;

⁽⁵⁾

from Hartmann & Burton (1997), N(H I) = 1.823 × 10¹⁸ cm^-2^∫T_B(H I)dv;

⁽⁶⁾

at such a low galactic latitude E_B − V is not reliably determined;

⁽⁷⁾

f_H₂ = 2N(H₂)/(N(H I) + 2N(H₂)).

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