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We present the confusion-limited 1.28 GHz MeerKAT DEEP2 image covering one $\approx 68'$ FWHM primary beam area with $7.6''$ FWHM resolution and $0.55 \pm 0.01$ $\mu$Jy/beam rms noise. Its J2000 center position $\alpha=04^h 13^m 26.4^s$,…

星系天体物理 · 物理学 2020-01-15 T. Mauch , W. D. Cotton , J. J. Condon , A. M. Matthews , T. D. Abbott , R. M. Adam , M. A. Aldera , K. M. B. Asad , E. F. Bauermeister , T. G. H. Bennett , H. Bester , D. H. Botha , L. R. S. Brederode , Z. B. Brits , S. J. Buchner , J. P. Burger , F. Camilo , J. M. Chalmers , T. Cheetham , D. de Villiers , M. S. de Villiers , M. A. Dikgale-Mahlakoana , L. J. du Toit , S. W. P. Esterhuyse , G. Fadana , B. L. Fanaroff , S. Fataar , S. February , B. S. Frank , R. R. G. Gamatham , M. Geyer , S. Goedhart , S. Gounden , S. C. Gumede , I. Heywood , M. J. Hlakola , J. M. G. Horrell , B. Hugo , A. R. Isaacson , G. I. G. Józsa , J. L. Jonas , R. P. M. Julie , F. B. Kapp , V. A. Kasper , J. S. Kenyon , P. P. A. Kotzé , N. Kriek , H. Kriel , T. W. Kusel , R. Lehmensiek , A. Loots , R. T. Lord , B. M. Lunsky , K. Madisa , L. G. Magnus , J. P. L. Main , J. A. Malan , J. R. Manley , S. J. Marais , A. Martens , B. Merry , R. Millenaar , N. Mnyandu , I. P. T. Moeng , O. J. Mokone , T. E. Monama , M. C. Mphego , W. S. New , B. Ngcebetsha , K. J. Ngoasheng , M. T. O. Ockards , N. Oozeer , A. J. Otto , A. A. Patel , A. Peens-Hough , S. J. Perkins , A. J. T. Ramaila , Z. R. Ramudzuli , R. Renil , L. L. Richter , A. Robyntjies , S. Salie , C. T. G. Schollar , L. C. Schwardt , M. Serylak , R. Siebrits , S. K. Sirothia , O. M. Smirnov , L. Sofeya , G. Stone , B. Taljaard , C. Tasse , I. P. Theron , A. J. Tiplady , O. Toruvanda , S. N. Twum , T. J. van Balla , A. van der Byl , C. van der Merwe , V. Van Tonder , B. H. Wallace , M. G. Welz , L. P. Williams , B. Xaia

We present an 11 X 11 arcminute map centred on the Hubble Deep Field taken at 850 microns with the SCUBA camera on the JCMT. The map has an average one-sigma sensitivity to point sources of about 2.3 mJy and thus probes the brighter end of…

天体物理学 · 物理学 2017-08-23 Colin Borys , Scott Chapman , Mark Halpern , Douglas Scott

We present ultra-deep Spitzer 70-micron observations of GOODS-North. For the first time, the turn-over in the 70-micron Euclidean-normalized differential source counts is observed. We derive source counts down to a flux density of 1.2mJy.…

天体物理学 · 物理学 2009-11-11 D. T. Frayer , M. T. Huynh , R. Chary , M. Dickinson , D. Elbaz , D. Fadda , J. A. Surace , H. I. Teplitz , L. Yan , B. Mobasher

We have conducted a submillimetre mapping survey of faint, gravitationally lensed sources, where we have targeted twelve galaxy clusters and additionally the NTT Deep Field. The total area surveyed is 71.5 arcmin^2 in the image plane;…

天体物理学 · 物理学 2009-11-13 K. K. Knudsen , P. P. van der Werf , J. -P. Kneib

The source counts of galaxies discovered at sub-millimetre and millimetre wavelengths provide important information on the evolution of infrared-bright galaxies. We combine the data from six blank-field surveys carried out at 1.1 mm with…

Using the 850 micron SCUBA camera on the JCMT and a scanning technique different from other sub-mm surveys, we have obtained a 125 square arcminute map centered on the Hubble Deep Field. The one-sigma sensitivity to point sources is roughly…

天体物理学 · 物理学 2009-11-06 Colin Borys , Scott Chapman , Mark Halpern , Douglas Scott

We present the first widefield extragalactic continuum catalogue with the MeerKAT S-band (2.5 GHz), of the radio-selected DEEP2 field. The combined image over the S1 (1.96 - 2.84 GHz) and S4 (2.62 - 3.50 GHz) sub-bands has an angular…

We present the deepest 850 $\mu$m map of the SSA22 field to date, utilizing a combination of new and archival observations taken with SCUBA-2, mounted at the James Clerk Maxwell Telescope (JCMT). The mapped area covers an effective region…

星系天体物理 · 物理学 2024-01-11 Xin Zeng , Yiping Ao , Yuheng Zhang

We conduct a stacking analysis using 1.4 GHz NRAO VLA Sky Survey (NVSS) detections and Planck all-sky maps to estimate the differential source counts down to the few 100 $\mu$Jy level at 30, 44, 70 and 100 GHz. Consequently, we are able to…

星系天体物理 · 物理学 2018-07-11 Eric J. Murphy , Ranga-Ram Chary

We have studied the optical, near-IR and radio properties of a complete sample of 43 sources detected at 15-micron in one of the deeper ELAIS repeatedly observed region. The extragalactic objects in this sample have 15-micron flux densities…

We have conducted a deep radio survey with the Very Large Array at 1.4 GHz of a region containing the Hubble Deep Field. This survey overlaps previous observations at 8.5 GHz allowing us to investigate the radio spectral properties of…

天体物理学 · 物理学 2009-10-31 E. A. Richards

This is the first of a series of papers based on sensitive 610 MHz observations of the ELAIS N1 field using the Giant Metrewave Radio Telescope. We describe the observations, processing and source catalogue extraction from a deep image with…

星系天体物理 · 物理学 2019-11-06 E. F. Ocran , A. R. Taylor , M. Vaccari , C. H. Ishwara-Chandra , I. Prandoni

We present deep VLA observations of the polarization of radio sources in the GOODS-N field at 1.4 GHz at resolutions of 1.6" and 10". At 1.6", we find that the peak flux cumulative number count distribution is N($>$p) $\sim$ 45 *…

星系天体物理 · 物理学 2014-03-31 Lawrence Rudnick , Frazer Owen

An analysis of the spatial fluctuations in 15 deep ASCA SIS0 images has been conducted in order to probe the 2-10 keV X-ray source counts down to a flux limit 2E-14 erg/cm2/s. Special care has been taken in modelling the fluctuations in…

天体物理学 · 物理学 2009-10-30 K. C. Gendreau , X. Barcons , A. C. Fabian

We present the results of 325 MHz GMRT observations of a super-cluster field, known to contain five Abell clusters at redshift $z \sim 0.2$. We achieve a nominal sensitivity of $34\,\mu$Jy beam$^{-1}$ toward the phase centre. We compile a…

We present the results of SCUBA2 observations at 450 micron and 850 micron of the field lensed by the massive cluster A370. With a total survey area > 100 arcmin2 and 1 sigma sensitivities of 3.92 and 0.82 mJy/beam at 450 and 850 micron…

Galaxy source counts in the infrared provide strong constraints on the evolution of the bolometric energy output from distant galaxy populations. We present the results from deep 24 micron imaging from Spitzer surveys, which include…

We present the results from the 1.2 mm continuum image obtained as part of the ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (ASPECS). The 1.2 mm continuum image has a size of 2.9 (4.2) arcmin$^2$ within a primary beam response…

We observed at 22 GHz with the VLBI array VERA a sample of 1536 sources with correlated flux densities brighter than 200 mJy at 8 GHz. One half of target sources has been detected. The detection limit was around 200 mJy. We derived the…

宇宙学与河外天体物理 · 物理学 2012-07-26 Leonid Petrov , Mareki Honma , Katsunori M. Shibata

We present the counts of luminous submillimeter (sub-mm) galaxies from an analysis of our survey of the distant Universe through lensing clusters, which uses massive cluster lenses with well-constrained mass models to magnify the background…

天体物理学 · 物理学 2009-06-16 Andrew W. Blain , Jean-Paul Kneib , R. J. Ivison , Ian Smail
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