Mapping water in protostellar outflows with Herschel - PACS and HIFI observations of L1448-C

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Table 1

Line intensities^* and H₂O abundances.

Position	∫T_mbdv (K km s^-1)			I(10^-6 erg cm^-2 s^-1 sr^-1)			N(o-H₂O)^b	X(H₂O)^c

(′′, ′′)^a	H₂O	H₂O	CO	H₂O	H₂O	CO	10¹³ cm^-2	10^-6
	1₁₀–1₀₁	2₂₁–1₀₁	J = 3–2	1₁₀–1₀₁	2₂₁–1₀₁	J = 3–2

(+ 26.0, −124.1)	10.3	3.2	32.9	1.78	14.9	1.3	3.0	...
(+ 29.3, −98.2)	7.5	2.8	31.6	1.30	12.9	1.3	1.3	0.7
(+ 23.4, −71.1)	10.4	2.7	61.3	1.80	12.6	2.5	1.6	0.8
(+ 11.1, −36.4)	7.9	2.4	26.9	1.37	11.0	1.1	1.0	2
(0, 0)	15.7	8.5	115.6	2.72	39.6	4.7	9.0	1–12.0
(− 12.5, + 34.9)	9.0	3.0	78.05	1.56	14.5	3.2	1.6	1
(− 21.7, + 63.9)	5.4	2.1	104.3	0.93	9.49	4.2	1.8	0.4

Notes.

^(*)

Intensities measured in a circular area of diameter 38′′. Absolute uncertainties are of about 20–30% for H₂O measurements and 15% for CO(3–2).

^(a)

Offsets with respect to α₂₀₀₀ = 03:25:38.8, δ₂₀₀₀ = + 30:44:04

^(b)

Derived from the unconvolved 2₂₁–1₀₁ line intensity assuming T_kin = 500 K and n(H₂) = 5 × 10⁶ cm^-3. The associated uncertainty is within a factor of 5.

^(c)

With respect to the H₂ column densities derived from the S(1) 17 μm line and assuming an o/p ratio of 3. Uncertainty on the abundance is within a factor of 10.

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