Table 2. Open in new tab Observational...

Name	D_beam_1 − 0	Peak_1 − 0	RMS_1 − 0	\|$\delta ^{\rm chan}_{1-0}$\|	\|$\int S_{\rm \nu }\, \delta V$\|_1 − 0	Peak_2 − 1	RMS_2 − 1	\|$\delta ^{\rm chan}_{2-1}$\|	\|$\int S_{\rm \nu }\, \delta V$\|_2 − 1	W₂₀	log₁₀(M\|$_{\rm H_2}$\|⁠)
NGC 0057	8.1	–	7.66	52.	–	–	19.73	52.	–	–	<3.94
NGC 0227	8.1	–	6.50	52.	–	–	14.39	52.	–	–	<3.31
NGC 0410	7.6	–	10.27	52.	–	–	33.61	52.	–	–	<4.62
NGC 0467	8.1	17.94	6.09	78.	8.67 ± 1.57	30.31	12.29	72.	13.89 ± 2.95	370.	5.87 ± 1.06
NGC 0499	7.4	–	8.21	52.	–	–	14.18	52.	–	–	<4.17
NGC 0507	7.4	–	11.11	52.	–	–	27.40	52.	–	–	<4.79
NGC 0533	8.3	–	10.94	52.	–	–	25.30	52.	–	–	<4.71
NGC 0547	7.9	–	10.70	52.	–	–	23.02	52.	–	–	<5.74
NGC 0741	7.9	–	9.44	52.	–	–	24.25	52.	–	–	<4.57
NGC 0890	5.9	–	12.67	52.	–	–	33.87	52.	–	–	<6.12
NGC 0910	8.5	–	4.84	52.	–	–	13.62	52.	–	–	<1.32
NGC 1453	6.0	–	14.33	52.	–	–	5.83	50.	–	–	<8.07
NGC 1573	6.9	–	8.14	52.	–	–	17.03	52.	–	–	<4.58
NGC 2256	8.5	–	9.37	52.	–	–	20.35	52.	–	–	<3.50
NGC 2274	6.0	–	6.83	52.	–	–	15.78	52.	–	–	<3.81
NGC 2513	6.9	–	6.41	52.	–	–	16.89	52.	–	–	<3.09
NGC 2672	8.5	–	10.06	52.	–	–	30.66	52.	–	–	<4.46
NGC 2693	7.9	–	7.60	52.	–	–	20.11	52.	–	–	<2.54
NGC 2832	11.2	–	7.86	52.	–	–	19.90	52.	–	–	<3.85
NGC 3158	11.0	–	6.56	52.	–	–	16.90	52.	–	–	<6.42
NGC 3816	10.6	–	4.96	52.	–	–	9.19	52.	–	–	<4.69
NGC 4073	9.7	–	9.06	52.	–	–	14.84	52.	–	–	<7.92
NGC 4839	10.9	–	10.14	52.	–	–	38.80	52.	–	–	<7.50
NGC 4874	10.9	–	7.94	52.	–	–	19.91	52.	–	–	<7.31
NGC 4889	10.9	–	9.31	52.	–	–	15.90	52.	–	–	<8.56
NGC 4914	7.9	–	6.77	52.	–	–	12.77	52.	–	–	<6.22
NGC 7265	8.8	–	9.00	52.	–	–	24.06	52.	–	–	<4.42
NGC 7274	8.8	–	5.90	52.	–	–	7.07	52.	–	–	<3.57
NGC 7550	7.7	64.85	12.89	26.	11.28 ± 1.20	153.54	27.41	26.	26.58 ± 2.56	180.	7.03 ± 0.75
NGC 7618	8.1	–	6.62	52.	–	–	16.79	52.	–	–	<4.02

Name

D_beam_1 − 0

Peak_1 − 0

RMS_1 − 0

|$\delta ^{\rm chan}_{1-0}$|

|$\int S_{\rm \nu }\, \delta V$|_1 − 0

Peak_2 − 1

RMS_2 − 1

|$\delta ^{\rm chan}_{2-1}$|

|$\int S_{\rm \nu }\, \delta V$|_2 − 1

W₂₀

log₁₀(M|$_{\rm H_2}$|⁠)

(kpc)

(mJy)

(km s⁻¹)

(Jy km s⁻¹)

(mJy)

(km s⁻¹)

(Jy km s⁻¹)

(km s⁻¹)

(10⁸ M_⊙)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

NGC 0057

8.1

–

7.66

52.

–

19.73

52.

–

<3.94

NGC 0227

8.1

–

6.50

52.

–

14.39

52.

–

<3.31

NGC 0410

7.6

–

10.27

52.

–

33.61

52.

–

<4.62

NGC 0467

8.1

17.94

6.09

78.

8.67 ± 1.57

30.31

12.29

72.

13.89 ± 2.95

370.

5.87 ± 1.06

NGC 0499

7.4

–

8.21

52.

–

14.18

52.

–

<4.17

NGC 0507

7.4

–

11.11

52.

–

27.40

52.

–

<4.79

NGC 0533

8.3

–

10.94

52.

–

25.30

52.

–

<4.71

NGC 0547

7.9

–

10.70

52.

–

23.02

52.

–

<5.74

NGC 0741

7.9

–

9.44

52.

–

24.25

52.

–

<4.57

NGC 0890

5.9

–

12.67

52.

–

33.87

52.

–

<6.12

NGC 0910

8.5

–

4.84

52.

–

13.62

52.

–

<1.32

NGC 1453

6.0

–

14.33

52.

–

5.83

50.

–

<8.07

NGC 1573

6.9

–

8.14

52.

–

17.03

52.

–

<4.58

NGC 2256

8.5

–

9.37

52.

–

20.35

52.

–

<3.50

NGC 2274

6.0

–

6.83

52.

–

15.78

52.

–

<3.81

NGC 2513

6.9

–

6.41

52.

–

16.89

52.

–

<3.09

NGC 2672

8.5

–

10.06

52.

–

30.66

52.

–

<4.46

NGC 2693

7.9

–

7.60

52.

–

20.11

52.

–

<2.54

NGC 2832

11.2

–

7.86

52.

–

19.90

52.

–

<3.85

NGC 3158

11.0

–

6.56

52.

–

16.90

52.

–

<6.42

NGC 3816

10.6

–

4.96

52.

–

9.19

52.

–

<4.69

NGC 4073

9.7

–

9.06

52.

–

14.84

52.

–

<7.92

NGC 4839

10.9

–

10.14

52.

–

38.80

52.

–

<7.50

NGC 4874

10.9

–

7.94

52.

–

19.91

52.

–

<7.31

NGC 4889

10.9

–

9.31

52.

–

15.90

52.

–

<8.56

NGC 4914

7.9

–

6.77

52.

–

12.77

52.

–

<6.22

NGC 7265

8.8

–

9.00

52.

–

24.06

52.

–

<4.42

NGC 7274

8.8

–

5.90

52.

–

7.07

52.

–

<3.57

NGC 7550

7.7

64.85

12.89

26.

11.28 ± 1.20

153.54

27.41

26.

26.58 ± 2.56

180.

7.03 ± 0.75

NGC 7618

8.1

–

6.62

52.

–

16.79

52.

–

<4.02

Name	D_beam_1 − 0	Peak_1 − 0	RMS_1 − 0	\|$\delta ^{\rm chan}_{1-0}$\|	\|$\int S_{\rm \nu }\, \delta V$\|_1 − 0	Peak_2 − 1	RMS_2 − 1	\|$\delta ^{\rm chan}_{2-1}$\|	\|$\int S_{\rm \nu }\, \delta V$\|_2 − 1	W₂₀	log₁₀(M\|$_{\rm H_2}$\|⁠)
NGC 0057	8.1	–	7.66	52.	–	–	19.73	52.	–	–	<3.94
NGC 0227	8.1	–	6.50	52.	–	–	14.39	52.	–	–	<3.31
NGC 0410	7.6	–	10.27	52.	–	–	33.61	52.	–	–	<4.62
NGC 0467	8.1	17.94	6.09	78.	8.67 ± 1.57	30.31	12.29	72.	13.89 ± 2.95	370.	5.87 ± 1.06
NGC 0499	7.4	–	8.21	52.	–	–	14.18	52.	–	–	<4.17
NGC 0507	7.4	–	11.11	52.	–	–	27.40	52.	–	–	<4.79
NGC 0533	8.3	–	10.94	52.	–	–	25.30	52.	–	–	<4.71
NGC 0547	7.9	–	10.70	52.	–	–	23.02	52.	–	–	<5.74
NGC 0741	7.9	–	9.44	52.	–	–	24.25	52.	–	–	<4.57
NGC 0890	5.9	–	12.67	52.	–	–	33.87	52.	–	–	<6.12
NGC 0910	8.5	–	4.84	52.	–	–	13.62	52.	–	–	<1.32
NGC 1453	6.0	–	14.33	52.	–	–	5.83	50.	–	–	<8.07
NGC 1573	6.9	–	8.14	52.	–	–	17.03	52.	–	–	<4.58
NGC 2256	8.5	–	9.37	52.	–	–	20.35	52.	–	–	<3.50
NGC 2274	6.0	–	6.83	52.	–	–	15.78	52.	–	–	<3.81
NGC 2513	6.9	–	6.41	52.	–	–	16.89	52.	–	–	<3.09
NGC 2672	8.5	–	10.06	52.	–	–	30.66	52.	–	–	<4.46
NGC 2693	7.9	–	7.60	52.	–	–	20.11	52.	–	–	<2.54
NGC 2832	11.2	–	7.86	52.	–	–	19.90	52.	–	–	<3.85
NGC 3158	11.0	–	6.56	52.	–	–	16.90	52.	–	–	<6.42
NGC 3816	10.6	–	4.96	52.	–	–	9.19	52.	–	–	<4.69
NGC 4073	9.7	–	9.06	52.	–	–	14.84	52.	–	–	<7.92
NGC 4839	10.9	–	10.14	52.	–	–	38.80	52.	–	–	<7.50
NGC 4874	10.9	–	7.94	52.	–	–	19.91	52.	–	–	<7.31
NGC 4889	10.9	–	9.31	52.	–	–	15.90	52.	–	–	<8.56
NGC 4914	7.9	–	6.77	52.	–	–	12.77	52.	–	–	<6.22
NGC 7265	8.8	–	9.00	52.	–	–	24.06	52.	–	–	<4.42
NGC 7274	8.8	–	5.90	52.	–	–	7.07	52.	–	–	<3.57
NGC 7550	7.7	64.85	12.89	26.	11.28 ± 1.20	153.54	27.41	26.	26.58 ± 2.56	180.	7.03 ± 0.75
NGC 7618	8.1	–	6.62	52.	–	–	16.79	52.	–	–	<4.02

Table 2.

Open in new tab

Observational parameters and derived molecular gas masses/limits for the sample ETGs.

Name	D_beam_1 − 0	Peak_1 − 0	RMS_1 − 0	\|$\delta ^{\rm chan}_{1-0}$\|	\|$\int S_{\rm \nu }\, \delta V$\|_1 − 0	Peak_2 − 1	RMS_2 − 1	\|$\delta ^{\rm chan}_{2-1}$\|	\|$\int S_{\rm \nu }\, \delta V$\|_2 − 1	W₂₀	log₁₀(M\|$_{\rm H_2}$\|⁠)
	(kpc)	(mJy)	(mJy)	(km s⁻¹)	(Jy km s⁻¹)	(mJy)	(mJy)	(km s⁻¹)	(Jy km s⁻¹)	(km s⁻¹)	(10⁸ M_⊙)
1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)
NGC 0057	8.1	–	7.66	52.	–	–	19.73	52.	–	–	<3.94
NGC 0227	8.1	–	6.50	52.	–	–	14.39	52.	–	–	<3.31
NGC 0410	7.6	–	10.27	52.	–	–	33.61	52.	–	–	<4.62
NGC 0467	8.1	17.94	6.09	78.	8.67 ± 1.57	30.31	12.29	72.	13.89 ± 2.95	370.	5.87 ± 1.06
NGC 0499	7.4	–	8.21	52.	–	–	14.18	52.	–	–	<4.17
NGC 0507	7.4	–	11.11	52.	–	–	27.40	52.	–	–	<4.79
NGC 0533	8.3	–	10.94	52.	–	–	25.30	52.	–	–	<4.71
NGC 0547	7.9	–	10.70	52.	–	–	23.02	52.	–	–	<5.74
NGC 0741	7.9	–	9.44	52.	–	–	24.25	52.	–	–	<4.57
NGC 0890	5.9	–	12.67	52.	–	–	33.87	52.	–	–	<6.12
NGC 0910	8.5	–	4.84	52.	–	–	13.62	52.	–	–	<1.32
NGC 1453	6.0	–	14.33	52.	–	–	5.83	50.	–	–	<8.07
NGC 1573	6.9	–	8.14	52.	–	–	17.03	52.	–	–	<4.58
NGC 2256	8.5	–	9.37	52.	–	–	20.35	52.	–	–	<3.50
NGC 2274	6.0	–	6.83	52.	–	–	15.78	52.	–	–	<3.81
NGC 2513	6.9	–	6.41	52.	–	–	16.89	52.	–	–	<3.09
NGC 2672	8.5	–	10.06	52.	–	–	30.66	52.	–	–	<4.46
NGC 2693	7.9	–	7.60	52.	–	–	20.11	52.	–	–	<2.54
NGC 2832	11.2	–	7.86	52.	–	–	19.90	52.	–	–	<3.85
NGC 3158	11.0	–	6.56	52.	–	–	16.90	52.	–	–	<6.42
NGC 3816	10.6	–	4.96	52.	–	–	9.19	52.	–	–	<4.69
NGC 4073	9.7	–	9.06	52.	–	–	14.84	52.	–	–	<7.92
NGC 4839	10.9	–	10.14	52.	–	–	38.80	52.	–	–	<7.50
NGC 4874	10.9	–	7.94	52.	–	–	19.91	52.	–	–	<7.31
NGC 4889	10.9	–	9.31	52.	–	–	15.90	52.	–	–	<8.56
NGC 4914	7.9	–	6.77	52.	–	–	12.77	52.	–	–	<6.22
NGC 7265	8.8	–	9.00	52.	–	–	24.06	52.	–	–	<4.42
NGC 7274	8.8	–	5.90	52.	–	–	7.07	52.	–	–	<3.57
NGC 7550	7.7	64.85	12.89	26.	11.28 ± 1.20	153.54	27.41	26.	26.58 ± 2.56	180.	7.03 ± 0.75
NGC 7618	8.1	–	6.62	52.	–	–	16.79	52.	–	–	<4.02

Name	D_beam_1 − 0	Peak_1 − 0	RMS_1 − 0	\|$\delta ^{\rm chan}_{1-0}$\|	\|$\int S_{\rm \nu }\, \delta V$\|_1 − 0	Peak_2 − 1	RMS_2 − 1	\|$\delta ^{\rm chan}_{2-1}$\|	\|$\int S_{\rm \nu }\, \delta V$\|_2 − 1	W₂₀	log₁₀(M\|$_{\rm H_2}$\|⁠)
	(kpc)	(mJy)	(mJy)	(km s⁻¹)	(Jy km s⁻¹)	(mJy)	(mJy)	(km s⁻¹)	(Jy km s⁻¹)	(km s⁻¹)	(10⁸ M_⊙)
1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)
NGC 0057	8.1	–	7.66	52.	–	–	19.73	52.	–	–	<3.94
NGC 0227	8.1	–	6.50	52.	–	–	14.39	52.	–	–	<3.31
NGC 0410	7.6	–	10.27	52.	–	–	33.61	52.	–	–	<4.62
NGC 0467	8.1	17.94	6.09	78.	8.67 ± 1.57	30.31	12.29	72.	13.89 ± 2.95	370.	5.87 ± 1.06
NGC 0499	7.4	–	8.21	52.	–	–	14.18	52.	–	–	<4.17
NGC 0507	7.4	–	11.11	52.	–	–	27.40	52.	–	–	<4.79
NGC 0533	8.3	–	10.94	52.	–	–	25.30	52.	–	–	<4.71
NGC 0547	7.9	–	10.70	52.	–	–	23.02	52.	–	–	<5.74
NGC 0741	7.9	–	9.44	52.	–	–	24.25	52.	–	–	<4.57
NGC 0890	5.9	–	12.67	52.	–	–	33.87	52.	–	–	<6.12
NGC 0910	8.5	–	4.84	52.	–	–	13.62	52.	–	–	<1.32
NGC 1453	6.0	–	14.33	52.	–	–	5.83	50.	–	–	<8.07
NGC 1573	6.9	–	8.14	52.	–	–	17.03	52.	–	–	<4.58
NGC 2256	8.5	–	9.37	52.	–	–	20.35	52.	–	–	<3.50
NGC 2274	6.0	–	6.83	52.	–	–	15.78	52.	–	–	<3.81
NGC 2513	6.9	–	6.41	52.	–	–	16.89	52.	–	–	<3.09
NGC 2672	8.5	–	10.06	52.	–	–	30.66	52.	–	–	<4.46
NGC 2693	7.9	–	7.60	52.	–	–	20.11	52.	–	–	<2.54
NGC 2832	11.2	–	7.86	52.	–	–	19.90	52.	–	–	<3.85
NGC 3158	11.0	–	6.56	52.	–	–	16.90	52.	–	–	<6.42
NGC 3816	10.6	–	4.96	52.	–	–	9.19	52.	–	–	<4.69
NGC 4073	9.7	–	9.06	52.	–	–	14.84	52.	–	–	<7.92
NGC 4839	10.9	–	10.14	52.	–	–	38.80	52.	–	–	<7.50
NGC 4874	10.9	–	7.94	52.	–	–	19.91	52.	–	–	<7.31
NGC 4889	10.9	–	9.31	52.	–	–	15.90	52.	–	–	<8.56
NGC 4914	7.9	–	6.77	52.	–	–	12.77	52.	–	–	<6.22
NGC 7265	8.8	–	9.00	52.	–	–	24.06	52.	–	–	<4.42
NGC 7274	8.8	–	5.90	52.	–	–	7.07	52.	–	–	<3.57
NGC 7550	7.7	64.85	12.89	26.	11.28 ± 1.20	153.54	27.41	26.	26.58 ± 2.56	180.	7.03 ± 0.75
NGC 7618	8.1	–	6.62	52.	–	–	16.79	52.	–	–	<4.02

Notes. Column 1 lists the name of each source. Column 2 lists the diameter of the 22 arcsec CO(1−0) beam of the IRAM 30-m telescope in kiloparsecs, given the distance to the object as listed in Table 1. The beam at the frequency of CO(2−1) is half this size. Column 3 lists the CO(1−0) peak flux, while Column 4 lists the rms noise reached in the CO(1−0) observation with a channel size as shown in Column 5. Column 6 lists the integrated intensity of the CO(1−0) line and its error. Columns 7–9 are as Columns 3–6, but for the CO(2−1) line observations. Column 11 shows the CO linewidth at 20 per cent of the peak intensity, which was found to be the same for both of the CO lines. Dashes indicate sources where the lines were not detected. Column 12 shows the H₂ mass for each source in units of 10⁸ M_⊙, derived using equation (1). For the non-detected sources, Column 12 lists the 3σ upper limit to the H₂ mass derived assuming a 250 km s⁻¹ velocity width for the line.

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