Ionization fraction and the enhanced sulfur chemistry in Barnard 1

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Table 1

Observing and telescope parameters.

Freq (GHz)	Δv (km s^-1)	HPBW ^a	B_eff	rms (T_a) (mK)

82.5−117.6	0.1255	29″−21″	0.81−0.78	3−5^b
130.0−172.7	0.3424	19″−14″	0.74	6−10^c
200.6−275.9	0.2839	12″−9″	0.63−0.49	5−10

Notes.

^(a)

HPBW(arcsec) ≈ 2460/Freq(GHz);

^(b)

rms ~240 mK for ν> 114 GHz;

^(c)

rms~500 mK for ν> 169 GHz.

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