PRODIGE – planet-forming disks in Taurus with NOEMA - I. Overview and first results for 12CO, 13CO, and C18O

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Volume 685 (May 2024)

A&A, 685 (2024) A126

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Table 5

Best-fit gas thermal and CO column density profiles.

Source	Line	Temperature at 100 au (K)	Temperature exp. q	Column density at 100 au (cm⁻²)	Column density exp. p
CI Tau	¹²CO (2–1)	34.1 ± 0.8	0.69 ± 0.01	17.97	1.32
	¹³CO (2–1)	18.6 ± 0.9	0.05 ± 0.03	16.18 ± 0.02	1.67 ± 0.11
	C¹⁸O (2–1)	[18.7]	0.09	15.22 ± 0.01	1.59

CY Tau	¹²CO (2–1)	17.0 ± 0.1	0.65 ± 0.01	17.00	1.40
	¹³CO (2–1)	18.2 ± 0.1	0.76 ± 0.01	16.12 ± 0.06	1.75 ± 0.07
	C¹⁸O (2–1)	[18.2]	[0.76]	14.88 ± 0.13	1.51 ± 0.09

DL Tau	¹²CO (2–1)	19.9 ± 0.1	0.66 ± 0.01	16.93	0.47
	¹³CO (2–1)	18.2 ± 0.1	0.50 ± 0.01	14.95 ± 0.05	0.18 ± 0.06
	C¹⁸O (2–1)	[18.2]	[0.50]	13.92 ± 0.08	[0.18]

DM Tau	¹²CO (2–1)	31.6 ± 0.1	0.58 ± 0.05	17.85 ± 0.39	2.75 ± 0.02
	¹³CO (2–1)	21.4 ± 0.2	0.51 ± 0.01	16.29 ± 0.02	1.57 ± 0.04
	C¹⁸O (2–1)	[21.5]	[0.5]	14.92 ± 0.02	0.53 ± 0.07

DN Tau	¹²CO (2–1)	25.8 ± 3.4	0.62 ± 0.05	16.36 ± 0.02	3.08 ± 0.08
	¹³CO (2–1)	24.3 ± 0.1	0.65 ± 0.01	15.52 ± 0.02	0.85 ± 0.05
	C¹⁸O (2–1)	[24.3]	[0.65]	14.64 ± 0.03	[0.85]

IQ Tau	¹²CO (2–1)	20.3 ± 0.2	0.41 ± 0.01	16.85	1.40
	¹³CO (2–1)	20.4 ± 0.1	0.37 ± 0.01	14.96 ± 0.03	1.34 ± 0.59
	C¹⁸O (2–1)	[20.4]	[0.37]	14.04 ± 0.12	1.34 ± 0.59

UZ Tau E	¹²CO (2–1)	36.6 ± 0.9	0.67 ± 0.19	16.65 ± 0.02	1.28 ± 0.01
	¹³CO (2–1)	27.9 ± 0.1	0.55 ± 0.01	16.10 ± 0.06	0.45 ± 0.04
	C¹⁸O (2–1)	[27.9]	[0.55]	15.34 ± 0.01	[0.50]

Notes. The parameters in square brackets have been kept fixed during the fitting. The best-fit temperatures are the excitation temperatures of the corresponding CO transitions. Please note that the best-fit column densities derived from the optically thick ¹²CO data can be underestimated.

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