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Table 1

Sample of sources.

Source α J2000 a δ J2000 a D b L bol b νLSR c
(h:m:s) (°::′′) (pc) (L) (km s-1)

IRAS4Ad 03:29:10.43 31:13:32.2 235 9.1 +7.2
L1448C 03:25:38.88 30:44:05.3 235 9.0 +5.2
L1157 20:39:06.27 68:02:15.7 325 4.7 +2.8
IRAS4B 03:29:12.01 31:13:08.1 235 4.4 +6.7



Source positions were derived from uv fits of the CALYPSO continuum data, see Maury et al. (in prep.).


Distances and bolometric luminosity estimates as used in Kristensen et al. (2012).


Obtained from C18O spectra, extracted at the source positions. The systemic velocity is derived from Gaussian line fits or is assumed as the velocity where self-absorption is observed.


The coordinates correspond to the IRAS4A2 source. We detect compact methanol emission only towards this component of the IRAS4A binary system (compare Santangelo et al. 2015).

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