Herschel/PACS far-IR spectral imaging of a jet from an intermediate mass protostar in the OMC-2 region

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Volume 596 (December 2016)

A&A, 596 (2016) A26

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Table 2

Observed properties of the [O I] jet from FIR 3.

Position	RA(J2000)	Dec(J2000)	[O I] 63 μm^a		Mass-loss rate	[O I] 63 μm/145 μm	Electron density
along the jet			Line flux	Line luminosity	Ṁ _out	flux ratio^b	n _e
			(× 10^-15 Wm^-2)	(× 10^-2L_⊙)	(× 10^-6M_⊙ yr^-1)		(× 10⁴cm^-3)


FIR 4	5 35 27.07	−5 10 0.37	5.1 ± 0.14	2.8	2.3	12.2 ± 0.7	4.8 ± 0.7
Jet_SW	5 35 27.48	−5 09 44.64	5.2 ± 0.14	2.8	2.3	13.5 ± 0.8	6.5 ± 0.9
FIR 3	5 35 27.67	−5 09 35.10	4.8 ± 0.14	2.6	2.1	14.1 ± 1.0	7.4 ± 1.1
Jet_NE	5 35 27.74	−5 09 20.70	3.8 ± 0.14	2.1	1.7	13.8 ± 1.2	7.0 ± 1.4
^cEntire jet			17.3 ± 0.3	9.5	7.7

Notes.

^(a)

The [O I] 63 line fluxes are extracted using a 9′′ radius aperture at the indicated positions. The statistical uncertainties in the line flux are estimated from the rms noise in the background-subtracted line maps. The line luminosities and mass-loss rates have the same fractional uncertainty as the line flux fractional uncertainty. The systematic uncertainties in the line flux for unchopped observations are dominated by the calibration errors and are expected to be ≲10–12%.

^(b)

The line ratio maps are calculated at matched angular resolution and the values presented here are extracted using a 9′′ radius aperture at the indicated positions. The flux ratio uncertainties are calculated from the statistical uncertainties in the fluxes.

^(c)

This corresponds to the total flux from the [O I] 63 μm line map (after the subtraction of the extended emission component) obtained by adding up all the pixels with flux values ≳3σ, where σ is the rms of the map.

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