The GALEX Arecibo SDSS Survey - VI. Second data release and updated gas fraction scaling relations

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Volume 544 (August 2012)

A&A, 544 (2012) A65

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Table 1

Weighted average and median gas fractions

		⟨ M_HI/M_⋆ ⟩	⟨ M_HI/M_⋆ ⟩	M_HI/M_⋆
x	⟨ x ⟩	(average)^a	(average)^b	(median)^c	N^d


Log M_⋆	10.16	0.272 ± 0.034	0.262 ± 0.035	0.117	105
	10.46	0.143 ± 0.018	0.136 ± 0.019	0.072	110
	10.77	0.084 ± 0.009	0.078 ± 0.009	0.044	116
	11.06	0.045 ± 0.007	0.038 ± 0.007	0.019	117
	11.30	0.028 ± 0.005	0.019 ± 0.006	0.017	32

Log μ_⋆	8.16	0.530 ± 0.075	0.530 ± 0.075	0.380	24
	8.46	0.296 ± 0.045	0.291 ± 0.046	0.191	50
	8.77	0.118 ± 0.012	0.112 ± 0.012	0.072	119
	9.07	0.069 ± 0.006	0.060 ± 0.006	0.034	193
	9.31	0.037 ± 0.005	0.022 ± 0.006	0.021	81

R₉₀/R₅₀	1.97	0.366 ± 0.047	0.366 ± 0.047	0.296	33
	2.35	0.279 ± 0.039	0.276 ± 0.039	0.143	91
	2.73	0.159 ± 0.018	0.150 ± 0.018	0.076	137
	3.10	0.062 ± 0.007	0.049 ± 0.007	0.026	176
	3.39	0.043 ± 0.008	0.034 ± 0.009	0.018	42

NUV − r	2.20	0.730 ± 0.096	0.730 ± 0.096	0.659	15
	2.85	0.366 ± 0.040	0.366 ± 0.040	0.233	65
	3.60	0.128 ± 0.010	0.127 ± 0.010	0.102	91
	4.36	0.106 ± 0.012	0.103 ± 0.012	0.069	79
	5.29	0.043 ± 0.006	0.024 ± 0.006	0.025	123
	5.83	0.027 ± 0.004	0.011 ± 0.004	0.017	94

Notes.

^(a)

Weighted, average gas fraction; Hi mass of non-detections set to upper limit.

^(b)

Weighted, average gas fraction; Hi mass of non-detections set to zero.

^(c)

Weighted, median gas fraction; Hi mass of non-detections set to upper limit.

^(d)

Number of galaxies in the bin.

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