HCO, c-C3H and CF+: three new molecules in diffuse, translucent and “spiral-arm” clouds

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Table 1

Sightlines and continuum targets.

Target	l	b	E_B − V^a	Flux	rms^b	v	N(HCO)	N(c-C₃H)	N(CF⁺)	N(H¹³CO⁺)	N(C₂H)
	°	°	mag	Jy	10^-3	km s^-1	10¹² cm^-2	10¹¹ cm^-2	10¹¹ cm^-2	10¹¹ cm^-2	10¹³ cm^-2


B0415+379	161.67	–8.82	1.65	3^c	4–6	–1	3.38(0.01)	4.63(0.18)	7.9(1.6)	2.22	8.29
B2200+420	92.59	–10.44	0.32	15^c	1.5–2	–1	0.85(0.02)	1.62(0.05)	4.0(0.7)	0.42	0.67
W49	43.17	0.01		2.5	7	40	4.86(0.32)			3.40	7.10
W49	43.17	0.01		2.5	7	51–66	14.8(0.5)				10.4

Notes.

^(a)

From Schlegel et al. (1998);

^(b)

see Sect. 2.2 concerning the channel-channel line/continuum rms in the spectral sweep;

^(c)

approximate, derived from pointing scans assuming 6 Jy Kelvin^-1.

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