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تسجيل مستخدم جديدSXDF-UDS-CANDELS-ALMA 1.5 arcmin$^2$ deep survey
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تأليف
K. Kohno
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We have conducted 1.1 mm ALMA observations of a contiguous $105 times 50$ or 1.5 arcmin$^2$ window in the SXDF-UDS-CANDELS. We achieved a 5$sigma$ sensitivity of 0.28 mJy, providing a flat sensus of dusty star-forming galaxies with $L_{rm IR} sim6times10^{11}$ $L_odot$ (for $T_{rm dust}$ =40K) up to $zsim10$ thanks to the negative K-correction at this wavelength. We detected 5 brightest sources (S/N$>$6) and 18 low-significance sources (5$>$S/N$>$4; these may contain spurious detections, though). One of the 5 brightest ALMA sources ($S_{rm 1.1mm} = 0.84 pm 0.09$ mJy) is extremely faint in the WFC3 and VLT/HAWK-I images, demonstrating that a contiguous ALMA imaging survey is able to uncover a faint dust-obscured population that is invisible in deep optical/near-infrared surveys. We found a possible [CII]-line emitter at $z=5.955$ or a low-$z$ CO emitting galaxy within the field, which may allow us to constrain the [CII] and/or the CO luminosity functions across the history of the universe.
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