CO-CHANGES - II. Spatially resolved IRAM 30 m CO line observations of 23 nearby edge-on spiral galaxies

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Volume 694 (February 2025)

A&A, 694 (2025) A235

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Table 4.

Molecular gas mass of the sample galaxies.

Name	f_IR	$M_{H_{2}, disk}^{o}$ $\rm M_{H_2,disk}^o$	$M_{H_{2}, disk}$ $\rm M_{H_2,disk}$	$M_{H_{2}, nucleus}^{o}$ $\rm M_{H_2,nucleus}^o$	$M_{H_{2}}$ $\rm M_{H_2}$	$M_{H_{2},^{13} CO}$ $\rm M_{H_2,^{13}CO}$	$Σ_{M_{H_{2}}}$ $\rm \Sigma_{M_{H_2}}$
		(× 10⁸ M_⊙)	(× 10⁸ M_⊙)	(× 10⁸ M_⊙)	(× 10⁸ M_⊙)	(× 10⁸ M_⊙)	(M_⊙ pc⁻²)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
NGC2613	6.79	$7 . 47_{- 0.84}^{+ 0.88}$ $7.47^{+0.88}_{-0.84}$	$50 . 7_{- 5.7}^{+ 6.0}$ $50.7^{+6.0}_{-5.7}$	1.48 ± 0.33	52.3 ± 5.6	$33 . 2_{- 8.7}^{+ 9.4}$ $33.2^{+9.4}_{-8.7}$	$5 . 86_{- 0.56}^{+ 0.67}$ $5.86^{+0.67}_{-0.56}$
NGC2683	5.53	$0 . 31_{- 0.02}^{+ 0.03}$ $0.31^{+0.03}_{-0.02}$	$1 . 73_{- 0.13}^{+ 0.15}$ $1.73^{+0.15}_{-0.13}$	$0 . 26_{- 0.04}^{+ 0.03}$ $0.26^{+0.03}_{-0.04}$	$1 . 99_{- 0.13}^{+ 0.15}$ $1.99^{+0.15}_{-0.13}$	$1 . 69_{- 0.32}^{+ 0.36}$ $1.69^{+0.36}_{-0.32}$	$2 . 87_{- 0.20}^{+ 0.22}$ $2.87^{+0.22}_{-0.20}$
NGC2820	4.09	$1 . 21_{- 0.32}^{+ 0.31}$ $1.21^{+0.31}_{-0.32}$	$4 . 95_{- 1.31}^{+ 1.28}$ $4.95^{+1.28}_{-1.31}$	$1 . 73_{- 0.28}^{+ 0.27}$ $1.73^{+0.27}_{-0.28}$	$6 . 70_{- 1.09}^{+ 1.14}$ $6.70^{+1.14}_{-1.09}$	$5 . 60_{- 1.47}^{+ 1.79}$ $5.60^{+1.79}_{-1.47}$	$4 . 53_{- 0.68}^{+ 0.81}$ $4.53^{+0.81}_{-0.68}$
NGC2992	−	$1 . 47_{- 0.53}^{+ 0.88}$ $1.47^{+0.88}_{-0.53}$	−	$7 . 55_{- 1.06}^{+ 1.11}$ $7.55^{+1.11}_{-1.06}$	$9 . 08_{- 1.36}^{+ 1.32}$ $9.08^{+1.32}_{-1.36}$ (⋆)	$6 . 00_{- 1.88}^{+ 3.02}$ $6.00^{+3.02}_{-1.88}$ (⋆)	$7 . 33_{- 1.23}^{+ 0.93}$ $7.33^{+0.93}_{-1.23}$
NGC3003	4.88	$0 . 90_{- 0.16}^{+ 0.19}$ $0.90^{+0.19}_{-0.16}$	$4 . 42_{- 0.78}^{+ 0.94}$ $4.42^{+0.94}_{-0.78}$	$0 . 94_{- 0.33}^{+ 0.29}$ $0.94^{+0.29}_{-0.33}$	$5 . 36_{- 0.88}^{+ 1.08}$ $5.36^{+1.08}_{-0.88}$	$8 . 79_{- 2.36}^{+ 2.89}$ $8.79^{+2.89}_{-2.36}$	$0 . 89_{- 0.14}^{+ 0.18}$ $0.89^{+0.18}_{-0.14}$
NGC3044	3.60	$1 . 13_{- 0.16}^{+ 0.14}$ $1.13^{+0.14}_{-0.16}$	$4 . 07_{- 0.59}^{+ 0.52}$ $4.07^{+0.52}_{-0.59}$	$1 . 26_{- 0.20}^{+ 0.18}$ $1.26^{+0.18}_{-0.20}$	$5 . 32_{- 0.61}^{+ 0.55}$ $5.32^{+0.55}_{-0.61}$	$4 . 54_{- 1.02}^{+ 1.42}$ $4.54^{+1.42}_{-1.02}$	$2 . 06_{- 0.25}^{+ 0.21}$ $2.06^{+0.21}_{-0.25}$
NGC3432	4.42	$0 . 15_{- 0.03}^{+ 0.04}$ $0.15^{+0.04}_{-0.03}$	$0 . 67_{- 0.15}^{+ 0.16}$ $0.67^{+0.16}_{-0.15}$	0.06 ± 0.03	$0 . 73_{- 0.15}^{+ 0.17}$ $0.73^{+0.17}_{-0.15}$	$1 . 10_{- 0.32}^{+ 0.42}$ $1.10^{+0.42}_{-0.32}$	$0 . 95_{- 0.19}^{+ 0.22}$ $0.95^{+0.22}_{-0.19}$
NGC3448	−	$0 . 83_{- 0.21}^{+ 0.26}$ $0.83^{+0.26}_{-0.21}$	−	$0 . 71_{- 0.36}^{+ 0.32}$ $0.71^{+0.32}_{-0.36}$	$1 . 56_{- 0.44}^{+ 0.46}$ $1.56^{+0.46}_{-0.44}$ (⋆)	< 2.3 (⋆)	$1 . 28_{- 0.36}^{+ 0.39}$ $1.28^{+0.39}_{-0.36}$
NGC3556	4.71	6.31 ± 0.15	29.7 ± 0.7	1.90 ± 0.08	$31 . 6_{- 0.6}^{+ 0.7}$ $31.6^{+0.7}_{-0.6}$	14.1 ± 1.7	$6 . 48_{- 0.12}^{+ 0.13}$ $6.48^{+0.13}_{-0.12}$
NGC3735	3.34	$16 . 9_{- 1.2}^{+ 1.3}$ $16.9^{+1.3}_{-1.2}$	$56 . 6_{- 3.9}^{+ 4.3}$ $56.6^{+4.3}_{-3.9}$	$14 . 9_{- 1.3}^{+ 1.1}$ $14.9^{+1.1}_{-1.3}$	$71 . 5_{- 4.0}^{+ 3.9}$ $71.5^{+3.9}_{-4.0}$	$42 . 2_{- 8.1}^{+ 8.9}$ $42.2^{+8.9}_{-8.1}$	$7 . 67_{- 0.41}^{+ 0.39}$ $7.67^{+0.39}_{-0.41}$
NGC3877	7.54	$2 . 66_{- 0.15}^{+ 0.13}$ $2.66^{+0.13}_{-0.15}$	$20 . 0_{- 1.1}^{+ 1.0}$ $20.0^{+1.0}_{-1.1}$	$2 . 07_{- 0.14}^{+ 0.16}$ $2.07^{+0.16}_{-0.14}$	$22 . 1_{- 1.1}^{+ 1.0}$ $22.1^{+1.0}_{-1.1}$	$14 . 3_{- 2.6}^{+ 2.4}$ $14.3^{+2.4}_{-2.6}$	$8 . 29_{- 0.44}^{+ 0.37}$ $8.29^{+0.37}_{-0.44}$
NGC4096	7.60	0.61 ± 0.04	$4 . 60_{- 0.31}^{+ 0.28}$ $4.60^{+0.28}_{-0.31}$	0.51 ± 0.04	$5 . 11_{- 0.32}^{+ 0.31}$ $5.11^{+0.31}_{-0.32}$	$2 . 66_{- 0.60}^{+ 0.61}$ $2.66^{+0.61}_{-0.60}$	$4 . 70_{- 0.28}^{+ 0.27}$ $4.70^{+0.27}_{-0.28}$
NGC4157	3.80	$3 . 65_{- 0.22}^{+ 0.21}$ $3.65^{+0.21}_{-0.22}$	13.9 ± 0.8	1.27 ± 0.15	15.1 ± 0.8	10.2 ± 1.7	$6 . 95_{- 0.40}^{+ 0.28}$ $6.95^{+0.28}_{-0.40}$
NGC4217	3.40	10.8 ± 0.2	36.8 ± 0.8	$4 . 59_{- 0.25}^{+ 0.23}$ $4.59^{+0.23}_{-0.25}$	41.4 ± 0.8	$28 . 1_{- 2.4}^{+ 2.2}$ $28.1^{+2.2}_{-2.4}$	$9 . 66_{- 0.19}^{+ 0.17}$ $9.66^{+0.17}_{-0.19}$
NGC4244	3.53	0.013 ± 0.003	0.05 ± 0.01	0.003 ± 0.001	0.05 ± 0.01	$0 . 14_{- 0.03}^{+ 0.04}$ $0.14^{+0.04}_{-0.03}$	0.029 ± 0.006
NGC4302	4.85	$3 . 92_{- 0.21}^{+ 0.17}$ $3.92^{+0.17}_{-0.21}$	$19 . 0_{- 1.0}^{+ 0.8}$ $19.0^{+0.8}_{-1.0}$	2.55 ± 0.20	21.6 ± 0.9	13.8 ± 1.8	$5 . 90_{- 0.28}^{+ 0.22}$ $5.90^{+0.22}_{-0.28}$
NGC4594	4.66	$1 . 00_{- 0.09}^{+ 0.08}$ $1.00^{+0.08}_{-0.09}$	$4 . 66_{- 0.42}^{+ 0.37}$ $4.66^{+0.37}_{-0.42}$	0.05 ± 0.01	$4 . 71_{- 0.39}^{+ 0.35}$ $4.71^{+0.35}_{-0.39}$	$6 . 51_{- 1.12}^{+ 1.30}$ $6.51^{+1.30}_{-1.12}$	$1 . 23_{- 0.10}^{+ 0.08}$ $1.23^{+0.08}_{-0.10}$
NGC4666	5.83	18.2 ± 0.4	$105 . 9_{- 2.1}^{+ 2.2}$ $105.9^{+2.2}_{-2.1}$	$14 . 9_{- 0.5}^{+ 0.4}$ $14.9^{+0.4}_{-0.5}$	$120 . 8_{- 2.1}^{+ 2.2}$ $120.8^{+2.2}_{-2.1}$	$59 . 5_{- 5.0}^{+ 5.7}$ $59.5^{+5.7}_{-5.0}$	14.8 ± 0.3
NGC4845	–	$1 . 13_{- 0.16}^{+ 0.15}$ $1.13^{+0.15}_{-0.16}$	–	$4 . 90_{- 0.15}^{+ 0.11}$ $4.90^{+0.11}_{-0.15}$	6.03 ± 0.18 (⋆)	$3 . 86_{- 0.56}^{+ 0.57}$ $3.86^{+0.57}_{-0.56}$ (⋆)	7.13 ± 0.22
NGC5084	–	–	–	–	< 1.3	< 3.9	–
NGC5297	3.38	$5 . 24_{- 0.54}^{+ 0.52}$ $5.24^{+0.52}_{-0.54}$	17.7 ± 1.8	$2 . 17_{- 0.45}^{+ 0.42}$ $2.17^{+0.42}_{-0.45}$	$19 . 9_{- 1.8}^{+ 1.7}$ $19.9^{+1.7}_{-1.8}$	$14 . 6_{- 4.4}^{+ 4.7}$ $14.6^{+4.7}_{-4.4}$	$3 . 80_{- 0.33}^{+ 0.28}$ $3.80^{+0.28}_{-0.33}$
NGC5792	2.83 (⋆⋆)	$11 . 3_{- 0.9}^{+ 0.8}$ $11.3^{+0.8}_{-0.9}$	$32 . 1_{- 2.6}^{+ 2.3}$ $32.1^{+2.3}_{-2.6}$	11.8 ± 0.7	$44 . 0_{- 2.7}^{+ 2.5}$ $44.0^{+2.5}_{-2.7}$ (⋆⋆)	$29 . 1_{- 4.9}^{+ 5.5}$ $29.1^{+5.5}_{-4.9}$ (⋆⋆)	$9 . 97_{- 0.58}^{+ 0.52}$ $9.97^{+0.52}_{-0.58}$
UGC10288	2.46	$4 . 55_{- 0.53}^{+ 0.39}$ $4.55^{+0.39}_{-0.53}$	$11 . 2_{- 1.3}^{+ 1.0}$ $11.2^{+1.0}_{-1.3}$	$1 . 96_{- 0.47}^{+ 0.42}$ $1.96^{+0.42}_{-0.47}$	$13 . 2_{- 1.1}^{+ 1.0}$ $13.2^{+1.0}_{-1.1}$	$11 . 0_{- 2.4}^{+ 3.4}$ $11.0^{+3.4}_{-2.4}$	$3 . 69_{- 0.37}^{+ 0.32}$ $3.69^{+0.32}_{-0.37}$

Notes. Galaxy parameters. (1) Galaxy name. (2) f_IR is the scaling factor derived from the 22 μm flux within 3 σ contour divided by the 22 μm flux within the FWHM of ¹²CO J = 1 − 0 observation; both subtract the flux within the nuclear region. The mark with ‘⋆⋆’ uses a scaling factor derived from Hα images (See Sect. 3.1 for details.). (3) $M_{H_{2}, disk}^{o}$ $\rm M_{H_2,disk}^o$ is the original molecular gas mass from all the IRAM observed positions except the nuclear region. (4) $M_{H_{2}, disk}$ $\rm M_{H_2,disk}$ is the corrected molecular gas mass calculated by multiplying $M_{H_{2}, disk}^{o}$ $\rm M_{H_2,disk}^o$ by f_IR. (5) $M_{H_{2}, nucleus}^{o}$ $\rm M_{H_2,nucleus}^o$ is the original molecular mass from the nuclear region. The original molecular mass estimate is from ¹²CO J = 1 − 0, and we assume the filling factor f within the beam as ∝f⁻¹. (6) $M_{H_{2}}$ $\rm M_{H_2}$ is the total molecular gas mass we used in the Sect. 4 and derived by summing the $M_{H_{2}, disk}$ $\rm M_{H_2,disk}$ and $M_{H_{2}, nucleus}^{o}$ $\rm M_{H_2,nucleus}^o$ , except for the value marked with ‘⋆’. The mark with ‘⋆’ was just obtained from original data of the $M_{H_{2}, nucleus}^{o}$ $\rm M_{H_2,nucleus}^o$ and $M_{H_{2}, disk}^{o}$ $\rm M_{H_2,disk}^o$ . (7) $M_{H_{2},^{13} CO}$ $\rm M_{H_2,^{13}CO}$ is the total molecular gas mass derived from ¹³CO J = 1 − 0 emission with the same method and f_IR as for ¹²CO J = 1 − 0. (8) $Σ_{M_{H_{2}}}$ $\rm \Sigma_{M_{H_2}}$ is the total molecular gas surface density calculated using the 22 μm diameter. The uncertainties are limited to the statistical errors derived from the measurements.

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