HCO mapping of the Horsehead: tracing the illuminated dense molecular cloud surfaces

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Volume 494 / No 3 (February II 2009)

A&A, 494 3 (2009) 977-985

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Table 3:

Einstein coefficients and upper level energies.
Molecule	Transition	Frequency	A_ij	$E_{\mbox{${\rm up}$ }}$
	J,F-J',F'	GHz	(s^-1)	(K)
HCO	1₀₁-0₀₀
	3/2,2-1/2,1	86.670760	$4.69 \times 10^{-6}$	4.2
	3/2,1-1/2,0	86.708360	$4.60 \times 10^{-6}$	4.2
	1/2,1,1/2,0	86.777460	$4.61 \times 10^{-6}$	4.2
	1/2,0-1/2,1	86.805780	$4.71 \times 10^{-6}$	4.2
	2₀₂-1₀₁
	5/2,3-3/2,2	173.3773770	$4.51 \times 10^{-5}$	12.5
	5/2,2-3/2,1	173.4060816	$4.43 \times 10^{-5}$	12.5
	3/2,2-1/2,1	173.4430648	$3.39 \times 10^{-5}$	12.5
	3₀₃-2₀₂
	7/2,4-5/2,3	260.0603290	$1.63 \times 10^{-4}$	25.0
	7/2,3-5/2,2	260.0821920	$1.61 \times 10^{-4}$	25.0
	5/2,3-3/2,2	260.1335860	$1.45 \times 10^{-4}$	25.0
	5/2,2-3/2,1	260.1557690	$1.37 \times 10^{-4}$	25.0
H¹³CO⁺	J = 1-0	86.754288	$3.2 \times 10^{-5}$	4.2
	J = 3-2	260.2553390	$1.3 \times 10^{-3}$	25.0

The line frequencies and intensities were extracted from the JPL Pickett et al. (1998) and CDMS (Müller et al. 2001, 2005) molecular spectroscopy data bases for HCO and H¹³CO⁺ respectively.

Source LaTeX | All tables | In the text

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