Molecular depletion times and the CO-to-H2 conversion factor in metal-poor galaxies

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Volume 583 (November 2015)

A&A, 583 (2015) A114

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Table 1

Observing targets.

Name	Other	Redshift^a	Systemic	Distance^a	Distance^a	12+	Dimensions^a	SFR ^c	Log^c	Log^d	Log(Total)^e
	name		velocity^a	(Mpc)	method	log(O/H)^b	(arcsec²)	(M_⊙ yr^-1)	M_star	M_HI	M_HI
			(km s^-1)						(M_⊙)	(M_⊙)	(M_⊙)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)

CGCG 007-025		0.0048	1449	24.5	CMB	7.74	27.0 × 16.2	0.23	8.36	8.90	8.90
II Zw 40	UGCA 116	0.0026	789	11.7	CMB	8.12	33.6 × 13.2	1.75	8.25	7.54	8.77
Mrk 996		0.0054	1622	18.1	CMB	8.00	36 × 30	0.16	9.18	8.00	8.00
NGC 1140	Mrk 1063	0.0050	1501	19.7	TF	8.18	102 × 54	0.82	9.76	8.56	9.51
NGC 1156		0.0013	375	8.1	Stars	8.23	198 × 150	0.23	9.55	8.66	9.04
NGC 3353	Haro 3,	0.0031	944	18.1	TF	8.37	72.0 × 49.8	1.28	9.54	8.87	8.87
	Mrk 35
NGC 7077	Mrk 900	0.0038	1152	17.2	TF	8.03	48 × 42	0.12	8.98	8.15	8.15
SBS 0335−052E		0.0135	4043	53.6	CMB	7.25	13.8 × 12.0	1.30	8.51	7.81	8.61
UM 448	Arp 161,	0.0186	5564	81.2	CMB	8.04	24 × 24	11.11	10.91	9.84	9.84
	UGC 6665
UM 462	Mrk 1307	0.0035	1057	19.5	CMB	7.97	36 × 30	0.29	8.56	8.30	8.72
	UGC 6850

Notes.

^(a)

NASA/IPAC Extragalactic Database (NED, http://nedwww.ipac.caltech.edu/): CMB corresponds to Cosmic Microwave Background and TF to Tully-Fisher; velocities are heliocentric; dimensions are optical major and minor diameters.

^(b)

Direct-temperature metallicities for CGCG 007−025, NGC 3353, UM 448, UM 462, SBS 0335−052E from Izotov et al. (2007); II Zw 40 (Thuan & Izotov 2005); Mrk 996 (Thuan et al. 1996); NGC 1140 (Izotov & Thuan 2004); NGC 1156 (Vigroux et al. 1987); NGC 7077 (van Zee & Haynes 2006).

^(c)

These quantities are newly derived, as described in Sect. 2.3.

^(d)

When these values differ from those in Col. (12), they are calculated from the mean Hi surface density integrated over the optical size of the galaxy.

^(e)

The Hi measurements are taken from van Zee (2001, CGCG 007−, van Zee et al. (1998, II Zw 40, UM 462), Thuan et al. (1999, Mrk 996), Hunter et al. (1994a, NGC 1140), Swaters et al. (2002, NGC 1156), Hunter et al. (1982, NGC 3353), Ekta et al. (2009, SBS 0335−, Paturel et al. (2003, UM 448).

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