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We discuss near-infrared star counts at the Galactic pole with a view to guiding the NGST and ground-based NIR cameras. Star counts from deep K-band images from the CFHT are presented, and compared with results from the 2MASS survey and…

Astrophysics · Physics 2009-11-07 J. B. Hutchings , P. B. Stetson , A. Robin , T. Webb

This paper addresses the nature of the near infrared background. We investigate whether there is an excess background at 1.4 microns, what is the source of the near infrared background and whether that background after the subtraction of…

Galaxies selected at 170um by the ISO FIRBACK survey represent the brightest \~10% of the Cosmic Infrared Background. Examining their nature in detail is therefore crucial for constraining models of galaxy evolution. Here we combine Spitzer…

Astrophysics · Physics 2009-11-11 A. Sajina , D. Scott , M. Dennefeld , H. Dole , M. Lacy , G. Lagache

We present deep 15.7-GHz observations made with the Arcminute Microkelvin Imager Large Array in two fields previously observed as part of the Tenth Cambridge (10C) survey. These observations allow the source counts to be calculated down to…

Astrophysics of Galaxies · Physics 2016-02-17 I. H. Whittam , J. M. Riley , D. A. Green , M. L. Davies , T. M. O. Franzen , C. Rumsey , M. P. Schammel , E. M. Waldram

We discuss the deep galaxy counts from the Hubble Deep Field (HDF) imaging survey. At faint magnitudes, the slope of the differential number-magnitude relation is flatter than 0.2 in all four HDF bandpasses. In the ultraviolet, a…

Astrophysics · Physics 2009-10-30 L. Pozzetti , P. Madau , G. Zamorani , H. C. Ferguson , G. A. Bruzual

By combining the 0.12 square degree F814W Hubble Space Telescope (HST) and Spitzer MIPS 24 micron imaging in the First Look Survey (FLS), we investigate the properties of interacting and merging Mid-Infrared bright and faint sources at 0.2<…

We analyse 850um continuum observations of eight massive X-ray detected galaxy clusters at z~0.8-1.6 taken with SCUBA-2 on the James Clerk Maxwell Telescope. We find an average overdensity of 850um-selected sources of a factor of 4+/-2 per…

Astrophysics of Galaxies · Physics 2019-04-10 E. A. Cooke , Ian Smail , S. M. Stach , A. M. Swinbank , R. G. Bower , Chian-Chou Chen , Y. Koyama , A. P. Thomson

Multi-wavelength galaxy number counts provide clues on the nature of galaxy evolution. The interpretation per galaxy type with the new code PEGASE.3 of the 12mu (ISO) and 24mu (Spitzer) faint galaxy counts provide new constraints on the…

Astrophysics · Physics 2009-11-13 B. Rocca-Volmerange , V. de Lapparent , N. Seymour , M. Fioc

Co-addition of deep (rms about 30 microJy) 20 cm data obtained with the Australia Telescope Compact Array at the location of Spitzer Wide field survey (SWIRE) sources has yielded statistics of radio source counterparts to faint 24 micron…

Astrophysics · Physics 2008-11-26 B. J. Boyle , T. J. Cornwell , E. Middelberg , R. P. Norris , P. N. Appleton , Ian Smail

We show the results of the fluctuation analysis applied to the off-source areas from the two 1 Million second Chandra Deep Fields, including our new results on the Chandra Deep Field-South (CDF-S) in the 0.5-2 keV band in addition to those…

Astrophysics · Physics 2007-05-23 Takamitsu Miyaji , Richard E. Griffiths

This paper investigates the clustering properties of a complete sample of 1041 24um-selected sources brighter than F[24um]=400 uJy in the overlapping region between the SWIRE and UKIDSS UDS surveys. We have concentrated on the two…

We present a pilot study of 16 micron imaging within the GOODS northern field. Observations were obtained using the PeakUp imaging capability of the Spitzer IRS. We survey 35 square arcminutes to an average 3 sigma depth of 0.075 mJy and…

Astrophysics · Physics 2009-11-13 H. I. Teplitz , V. Charmandaris , R. Chary , J. W. Colbert , L. Armus , D. Weedman , ;

We have obtained mid-infrared spectra of nine cool-core galaxy clusters with the Infrared Spectrograph aboard the Spitzer Space Telescope. X-ray, ultraviolet and optical observations have demonstrated that each of these clusters hosts a…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-25 G. E. de Messières , R. W. O'Connell , B. R. McNamara , M. Donahue , P. E. J. Nulsen , G. M. Voit , M. W. Wise

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…

Astrophysics · Physics 2009-10-31 E. A. Richards

Brightness-weighted differential source counts $S^2 n(S)$ spanning the eight decades of flux density between $0.25\,\mu\mathrm{Jy}$ and 25 Jy at 1.4 GHz were measured from (1) the confusion brightness distribution in the MeerKAT DEEP2 image…

Astrophysics of Galaxies · Physics 2021-03-24 A. M. Matthews , J. J. Condon , W. D. Cotton , T. Mauch

We present a submillimetre survey of seven high-z galaxy clusters (0.64<z<1.0) using the Submillimetre Common-User Bolometer Array (SCUBA) at 850 and 450 um. The targets, of similar richness and redshift, are selected from the Red-sequence…

Several independent measurements have confirmed the existence of fluctuations ($\delta F_{\rm obs}\approx 0.1 \rm nW/m^{2}/sr$ at $3.6 \rm \mu m$) up to degree angular scales in the source-subtracted Near InfraRed Background (NIRB) whose…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Bin Yue , Andrea Ferrara , Ruben Salvaterra , Xuelei Chen

We present preliminary results on 24micron detections of luminous infrared galaxies at z>1 with the Multiband Imaging Photometer for Spitzer (MIPS). Observations were performed in the Lockman Hole and the Extended Groth Strip (EGS), and…

We carried out extremely sensitive Submillimeter Array (SMA) 340 GHz (860 micron) continuum imaging of a complete sample of SCUBA 850 micron sources (>4 sigma) with fluxes >3 mJy in the GOODS-N. Using these data and new SCUBA-2 data, we do…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 A. J. Barger , W. -H. Wang , L. L. Cowie , F. N. Owen , C. -C. Chen , J. P. Williams