CH3OCH3 in Orion-KL: a striking similarity with HCOOCH3

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Table 1

Main parameters of the IRAM Plateau de Bure interferometer data sets where transitions of dimethyl ether are detected.

Bandwidth	HPBW	Spectral resolution		Flux conversion	Synthesized beam		Pixel size
(GHz)	(″)	(MHz)	(km s^-1)	(1 Jy beam^-1)	(″ × ″)	PA (°)	(″ × ″)

80.502−80.574^a	60	0.625	2.33	4.6 K	7.63 × 5.35	15	0.80 × 0.80
101.178−101.717^b	50	0.625	1.85	15.8 K	3.79 × 1.99	22	0.50 × 0.50
203.411−203.483^a	25	0.625	0.92	7.0 K	2.94 × 1.44	27	0.32 × 0.32
223.408−223.941^b	23	0.625	0.84	17.3 K	1.79 × 0.79	14	0.25 × 0.25

Notes.

^(a)

Observations centered on (α_J2000 = 05^h35^m1446, δ_J2000 = −05°22′3059) with a velocity of 6 km s^-1 with respect to the LSR.

^(b)

Observations centered on (α_J2000 = 05^h35^m1420, δ_J2000 = −05°22′3600) with a velocity of 8 km s^-1 with respect to the LSR.

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