ﻻ يوجد ملخص باللغة العربية
We present a study of the radio properties of 870$mu$m-selected submillimetre galaxies (SMGs), observed at high resolution with ALMA in the Extended Chandra Deep Field South. From our initial sample of 76 ALMA SMGs, we detect 52 SMGs at $>3sigma$ significance in VLA 1400MHz imaging, of which 35 are also detected at $>3sigma$ in new 610MHz GMRT imaging. Within this sample of radio-detected SMGs, we measure a median radio spectral index $alpha_{610}^{1400} = -0.79 pm 0.06$, (with inter-quartile range $alpha=[-1.16,-0.56]$) and investigate the far-infrared/radio correlation via the parameter $q_{rm IR}$, the logarithmic ratio of the rest-frame 8-1000$mu$m flux and monochromatic radio flux. Our median $q_{rm IR} = 2.56 pm 0.05$ (inter-quartile range $q_{rm IR}=[2.42,2.78]$) is higher than that typically seen in single-dish 870$mu$m-selected sources ($q_{rm IR} sim 2.4$), which may reflect the fact that our ALMA-based study is not biased to radio-bright counterparts, as previous samples were. Finally, we search for evidence that $q_{rm IR}$ and $alpha$ evolve with age in a co-dependent manner, as predicted by starburst models: the data populate the predicted region of parameter space, with the stellar mass tending to increase along tracks of $q_{rm IR}$ versus $alpha$ in the direction expected, providing the first observational evidence in support of these models.
We exploit ALMA 870um (345GHz) observations of submillimetre sources in the Extended Chandra Deep Field South to investigate the far-infrared properties of high-redshift submillimetre galaxies (SMGs). Using the precisely located 870um ALMA positions
We present spectroscopic redshifts of S(870)>2mJy submillimetre galaxies (SMGs) which have been identified from the ALMA follow-up observations of 870um detected sources in the Extended Chandra Deep Field South (the ALMA-LESS survey). We derive spect
[abridged] The ALESS survey has followed-up a sample of 122 sub-millimeter sources in the Extended Chandra Deep Field South at 870um with ALMA, allowing to pinpoint the positions of sub-millimeter galaxies (SMGs) to 0.3 and to find their precise coun
We present a measurement of the spatial clustering of submillimetre galaxies (SMGs) at z = 1-3. Using data from the 870 micron LESS survey, we employ a novel technique to measure the cross-correlation between SMGs and galaxies, accounting for the ful
We analyse HST WFC3/$H_{160}$-band observations of a sample of 48 ALMA-detected submillimeter galaxies (SMGs) in the Extended Chandra Deep Field South field, to study their stellar morphologies and sizes. We detect 79$pm$17% of the SMGs in the $H_{16