Extended Hα over compact far-infrared continuum in dusty submillimeter galaxies - Insights into dust distributions and star-formation rates at z ∼ 2

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Volume 635 (March 2020)

A&A, 635 (2020) A119

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Table 2.

FIR continuum and Hα measurements of our sample.

ID	Redshift	F₈₇₀^(a)	F_Ha^(b)	r_e,maj,870,uv^(c)	r_e,870,cog^(d)	r_{e,maj,Ha,galfit}^(e)	r_e,Ha,cog^(f)	r_e ratio ^(g)
		[mJy]	[1E-16 erg s⁻¹ cm⁻²]	[kpc]	[kpc]	[kpc]	[kpc]
ALESS17.1	1.5392(2)	8.2(0.2)	0.6(0.2)	1.7(0.1)	1.7(0.2)	4.3(0.3)	4.5(0.7)	3.0(0.6)
ALESS66.1	2.5534(2)	2.7(0.1)	1.5(0.3)	3.1(0.1)	2.2(0.2)	3.9(0.2)	3.2(0.5)	1.3(0.3)
ALESS67.1	2.1228(6)	3.7(0.2)	2.6(0.4)	1.7(0.1)	1.8(0.3)	4.9(0.2)	5.7(0.5)	3.4(0.7)
ALESS75.1	2.5468(3)	2.6(0.2)	3.4(0.5)	1.7(0.2)	1.9(0.2)	4.0(0.2)	4.0(0.6)	2.1(0.3)
AS2UDS292.0	2.1822(1)	3.1(0.4)	1.0(0.2)	3.1(0.4)	2.0(0.7)	4.3(0.2)	3.9(0.3)	1.8(0.5)
AS2UDS412.0	2.5217(8)	3.7(0.2)	0.5(0.2)	1.5(0.1)	1.3(0.3)	2.7(0.3)	1.5(0.8)	1.1(0.5)

Notes. Uncertainties are given in the parentheses.

^(a)

Total 870 μm continuum flux density estimated from Gaussian fits in the visibility domain.

^(b)

Total Hα flux density.

^(c)

Half-light radius in major axis at 870 μm obtained from CASA fitting in the visibility domain.

^(d)

Half-light radius at 870 μm obtained from the curve-of-growth analyses based on the ALMA continuum imaging.

^(e)

Hα half-light radius in major axis obtained using GALFIT based on the 2D emission line intensity maps.

^(f)

Hα half-light radius obtained from the curve-of-growth analyses based on the IFU cubes.

^(g)

Hα over 870 μm continuum size ratio from which the sizes from the curve-of-growth method are adopted.

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