Characterizing elusive, faint dusty star-forming galaxies: a lensed, optically undetected ALMA galaxy at z ~ 3.3

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Volume 596 (December 2016)

A&A, 596 (2016) A75

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Table 1

Observed photometry of the ALMA-detected SMG and of the optically detected source.

			Lensed source	Lens
			(ALMA-detected)	(optically detected)
Instrument	Filter	Central λ	Flux	Flux
		[μm]	[μJy]	[μJy]

ACS/HST	I814W	0.79	<0.085	3.44 ± 0.12
VIRCAM/VISTA	Y	1.02	0.171 ± 0.028	5.726 ± 0.037
VIRCAM/VISTA	J	1.25	0.124 ± 0.030	7.871 ± 0.040
VIRCAM/VISTA	H	1.65	0.455 ± 0.043	11.357 ± 0.059
VIRCAM/VISTA	K _s	2.15	0.902 ± 0.057	17.600 ± 0.077
IRAC/Spitzer	CH1	3.56	2.12 ± 0.27	24.2 ± 1.2
IRAC/Spitzer	CH2	4.51	4.33 ± 0.35	22.1 ± 1.5
IRAC/Spitzer	CH3	5.74	6.8 ± 2.1	15.3 ± 8.5
IRAC/Spitzer	CH4	7.90	4.1 ± 2.4	30 ± 11
PACS/Herschel	100 μm	101.74	< 1.07 × 10³
PACS/Herschel^a	160 μm	164.19	(5.46 ± 3.79^b) × 10³	(5.34 ± 3.79^b) × 10³
SPIRE/Herschel^a	250 μm	251.89	(13.92 ± 3.45^b) × 10³	(8.11 ± 3.45^b) × 10³
SPIRE/Herschel^a	350 μm	351.92	(19.78 ± 4.10^b) × 10³	(8.72 ± 4.10^b) × 10³
SPIRE/Herschel^a	500 μm	509.81	(10.03 ± 4.76^b) × 10³	(6.83 ± 4.76^b) × 10³
ALMA	Band 7	873.37	(3.90 ± 0.41) × 10³	–
VLA	Band L	2 × 10⁵	64 ± 11	–

Notes. The photometry of the ALMA-detected source has not been corrected for magnification.

^(a)

Photometry in the 160, 250, 350 and 500 μm Herschel bands has been estimated through assumptions (see text) rather than directly measured.

^(b)

The RMS value includes confusion noise.

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