The deuterium fractionation of water on solar-system scales in deeply-embedded low-mass protostars

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Table 1

Parameters for the observations tuned to HDO at 225.9 GHz and 241.6 GHz.

Source	Beam^a	PA	RMS
	[′′]	[°]	[^b]


IRAS 2A	1.3 × 1.0	23.3	16.0
IRAS 2A^c	1.2 × 0.9	13.3	10.5
IRAS 4A	1.1 × 0.8	11.3	12.5
IRAS 4B	1.1 × 0.8	10.6	10.2

Notes.

^(a)

Major × minor axis.

^(b)

Units of mJy beam^-1 channel^-1.

^(c)

For the 241.6 GHz observations.

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