ALMA imaging of the cold molecular and dusty disk in the type 2 active nucleus of the Circinus galaxy

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Volume 664 (August 2022)

A&A, 664 (2022) A142

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Table 1.

Log of observations and observing parameters.

ALMA band	7	9
Date of observations	2015-07-16	2015-07-26
Number of antennas	39	41
Proj. baseline lengths	12…1564 m	12…1569 m
Integration time	16 min	15 min
Pointing centre (J2000)	14:13:09.9060	14:13:09.9060
	−65:20:20.4684	−65:20:20.4684
Window width	1.875 GHz	1.875 GHz
Number of channels	960	1920
Channel bandwidth	1.953 MHz	0.976 MHz
	∼1.7 km s⁻¹	∼0.42 km s⁻¹
Spectral window 0	344.838 GHz	690.431 GHz
Spectral window 1	342.880 GHz	707.809 GHz
Spectral window 2	356.571 GHz	692.821 GHz ^(a)
Spectral window 3	354.880 GHz	704.613 GHz ^(a)
Primary beam size	18 arcsec	9 arcsec
Bandpass calibrator	J1427−4206	J1256−0547
Amplitude/flux calib.	J1613−586	J1613−586 ^(b)
Phase calibrator	J1424−6807	J1147−6753
Delay calibrator	J1337−6509	J1617−5848 ^(b)

Notes.

^(a)

Spectral windows 2 and 3 in band 9 were observed in continuum mode, that is with only 128 channels and a channel spacing of 15.6 MHz for a total window width of 2 GHz.

^(b)

J1617−5848 and J1613−586 are two different designations for the same source.

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