JWST’s PEARLS: Resolved study of the stellar and dust components in starburst galaxies at cosmic noon

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Volume 690 (October 2024)

A&A, 690 (2024) A285

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Table 2.

CO(3–2) line measurements.

ID	Frequency	Redshift	I_CO	FWHM	L′_{CO(3 − 2)}	M_gas^(a)
	(GHz)		(Jy km s⁻¹)	(km s⁻¹)	(10⁹ K km s⁻¹ pc²)	(10¹⁰ M_⊙)
EMIR ^(b)
01a	97.383 ± 0.010	2.55089 ± 0.00071	2.75 ± 0.33	0497 ± 63	96.6 ± 11.6	16.7 ± 2.0
01b+01c	100.887 ± 0.029	2.42756 ± 0.00098	1.85 ± 0.47	643 ± 172	59.7 ± 15.2	10.3 ± 2.6

NOEMA
01a	97.3709 ± 0.0032	2.55133 ± 0.00012	2.19 ± 0.09	481 ± 23	77.2 ± 3.2	13.3 ± 0.6
01b	100.8809 ± 0.0054	2.42777 ± 0.00018	1.31 ± 0.08	554 ± 39	42.6 ± 2.6	7.4 ± 0.5
01c	101.0463 ± 0.0238	2.42215 ± 0.00081	0.59 ± 0.12	722 ± 174	19.0 ± 4.0	3.3 ± 0.7

Notes.

^(a)

The gas mass is derived from the ${L'}_{CO (1 - 0)}$ ${L{\prime }}_{\mathrm{CO(1-0)} }$ luminosity as M_gas = 1.36α_CO ${L'}_{CO (1 - 0)}$ ${L{\prime }}_{\mathrm{CO(1-0)} }$ and assuming α_CO = 0.8 M_⊙ pc⁻² (K km s⁻¹)⁻¹ as typically assumed in starburst galaxies. The ${L'}_{CO (1 - 0)}$ ${L{\prime }}_{\mathrm{CO(1-0)} }$ luminosity is derived from the ${L'}_{CO (3 - 2)}$ ${L{\prime }}_{\mathrm{CO(3-2)} }$ luminosity assuming the brightness-temperature ratio measured in SMGs (r_3, 2 = ${L'}_{CO (3 - 2)}$ ${L{\prime }}_{\mathrm{CO(3-2)} }$ / ${L'}_{CO (1 - 0)}$ ${L{\prime }}_{\mathrm{CO(1-0)} }$ = 0.63; Birkin et al. 2021).

^(b)

Line parameters obtained from the IRAM 30-m telescope/EMIR spectra (Polletta et al. 2022), and assuming the same r_3, 2 value and the M_gas− ${L'}_{CO (1 - 0)}$ ${L{\prime }}_{\mathrm{CO(1-0)} }$ relation adopted for the NOEMA data.

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