Prestellar and protostellar cores in Orion B9 | Astronomy & Astrophysics (A&A)

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Table 1:

Observational parameters.
Molecule	Transition	Frequency	Instrument	$F_{\rm eff}$	$\eta_{\rm MB}$ ^a	Resolution		$F_{\rm throw}$	$T_{\rm sys}$	Obs. date
		[GHz]				[ $^{\prime\prime}$ ]	[km s^-1]	[MHz]	[K]
N₂H⁺	J=1-0	93.173777^b	30 m/AB100	0.95	0.80	26.4	0.064	7.9	150-190	18-20 May 2007
N₂D⁺	J=2-1	154.217154^c	30 m/CD150	0.93	0.73	16	0.038	15.8	290-340	18-20 May 2007
Continuum at 870 $\mu$ m			APEX/LABOCA	0.97	0.73	18.6	-	-	-	4 Aug. 2007

^a $\eta_{\rm MB}=B_{\rm eff}/F_{\rm eff}$ , where $B_{\rm eff}$ and $F_{\rm eff}$ are the beam and forward efficiencies, respectively.
^b Frequency taken from Caselli et al. (1995). ^c Frequency taken from Gerin et al. (2001).

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