Open Access

Table A.1

Literature positions of VLA 1623W.

Referencea Epoch Freq α σα δ σδ FWHMb Phase Calibrator
(GHz) (h:m:s) (mas) (d:am:as) (mas) (arcsec)
This study 2019.3 342 16:26:25.6295 5 −24:24:29.6258 5 0.27 J1650-2943
Sadavoy19 (1) 2017.5 233 16:26:25.6315 5 −24:24:29.6185 5 0.24 J1625-2527
Harris18 (2) 2016.3 344 16:26:25.6316 5 −24:24:29.5866 5 0.18 J1625-2527, J1633-2557
Murillo13c (3) 2012.33 230 16:26:25.636 16 −24:24:29.488 16 0.65 J1733-1304
Maury12c (4) 2009.58 225 16:26:25.63 100 −24:24:29.5 100 0.53 J1625-2527, J1517-2422
Chen13c (5) 2007.5 230 16:26:25.64 200 −24:24:29.3 200 0.88 J1626-2951

Notes. (a)References for positions are: (1) Sadavoy et al. (2019), (2) Harris et al. (2018), (3) Murillo et al. (2013), (4) Maury et al. (2012), (5) Chen et al. (2013).

b The geometric mean  FWHM (=ab)${\rm{ FWHM }}( = \sqrt {ab} )$.

c Position offsets are estimated using total flux

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