SXDF-UDS-CANDELS-ALMA 1.5 arcmin2 deep survey
Abstract
We have conducted 1.1 mm ALMA observations of a contiguous 105'' × 50'' or 1.5 arcmin2 window in the SXDF-UDS-CANDELS. We achieved a 5σ sensitivity of 0.28 mJy, giving a flat sensus of dusty star-forming galaxies with L IR ~6×1011 L ⊙ (if T dust=40K) up to z ~ 10 thanks to the negative K-correction at this wavelength. We detected 5 brightest sources (S/N>6) and 18 low-significant sources (5>S/N>4 they may contain spurious detections, though). One of the 5 brightest ALMA sources (S 1.1mm = 0.84 +/- 0.09 mJy) is extremely faint in the WFC3 and VLT/HAWK-I images, demonstrating that a contiguous ALMA imaging survey uncovers a faint dust-obscured population invisible in the deep optical/near-infrared surveys. We find a possible [CII]-line emitter at z=5.955 or a low-z CO emitting galaxy within the field, allowing us to constrain the [CII] and/or CO luminosity functions across the history of the universe.
- Publication:
-
Galaxies at High Redshift and Their Evolution Over Cosmic Time
- Pub Date:
- 2016
- DOI:
- 10.1017/S1743921315010364
- arXiv:
- arXiv:1601.00195
- Bibcode:
- 2016IAUS..319...92K
- Keywords:
-
- galaxies: starburst;
- galaxies: high-redshift;
- submillimeter;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 4 pages, 2 figures, 1 table, to appear in the proceedings of IAU Symposium 319 "Galaxies at High Redshift and Their Evolution over Cosmic Time", eds. S. Kaviraj &