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We present bright galaxy number counts measured with linear detectors in the B, V, I, and K bands in two fields covering nearly 10 square degrees. All of our measurements are consistent with passive evolution models, and do not confirm the…

天体物理学 · 物理学 2016-06-08 J. P. Gardner , R. M. Sharples , B. E. Carrasco , C. S. Frenk

We combine deep K-band (Keck) with V- and I-band (NTT) observations of two high-Galactic latitude fields, surveying a total of ~2 sq. arcmin. The K-band galaxy counts continue to rise above K=22, reaching surface densities of few x 10^5 per…

天体物理学 · 物理学 2015-06-24 Leonidas A. Moustakas , Marc Davis , James R. Graham , Joseph Silk , B. A. Peterson , Y. Yoshii

We present results from a large area (552\,\sqamin) imaging $K$-band survey to a 5$\sigma$ limit of $K\simeq 17.3$. We have optical-infrared colours of almost all the objects in the sample. Star-galaxy discrimination is performed and the…

天体物理学 · 物理学 2015-06-24 Karl Glazebrook , J. A. Peacock , C. A. Collins , L. Miller

(abridged) We present results from two new near-infrared imaging surveys. One covers 47.2 arcmin^2 to K(3\sigma)<20 whilst a second, deeper survey covers a sub-area of 1.8 arcmin^2 to K(3\sigma)<22.75. Over the entire area we have extremely…

天体物理学 · 物理学 2009-10-31 H. J. McCracken , N. Metcalfe , T. Shanks , A. Campos , J. P. Gardner

We present J and Ks band galaxy counts down to J=24 and Ks=22.5 obtained with the new infrared imager/spectrometer, SOFI, at the ESO New Technology Telescope. The co-addition of short, dithered, images led to a total exposure time of 256…

天体物理学 · 物理学 2016-08-30 P. Saracco , S. D'Odorico , A. Moorwood , A. Buzzoni , J. - G. Cuby , C. Lidman

We present in this paper an analysis of the faint and red near-infrared selected galaxy population found in near-infrared imaging from the Palomar Observatory Wide-Field Infrared Survey. This survey covers 1.53 deg^2 to 5-sigma detection…

天体物理学 · 物理学 2009-11-13 C. J. Conselice , K. Bundy , Vivian U , P. Eisenhardt , J. Lotz , J. Newman

We present K'-band galaxy counts in the magnitude range $13 < K' < 20$, obtained from two independent surveys near the South Galactic Pole, covering an area of $\sim 40 arcmin^2$ and $\sim 170 arcmin^2$, including $\sim 200$ and $\sim 1000$…

天体物理学 · 物理学 2009-10-30 P. Saracco , A. Iovino , B. Garilli , D. Maccagni , G. Chincarini

We present the results of a wide-field K-selected galaxy survey with complementary optical I- and B-band imaging in six fields with a total coverage of 9.8 square degrees. This survey establishes the bright-end K-band galaxy number counts…

天体物理学 · 物理学 2009-10-28 J. -S. Huang , L. L. Cowie , J. P. Gardner , E. M. Hu , A. Songaila , R. J. Wainscoat

Deep J and Ks band images covering a $5\times5$ arcmin area centered on the NTT Deep Field have been obtained during the Science Verification of SOFI at the NTT. These images were made available via the Web in early June. The preliminary…

天体物理学 · 物理学 2009-10-31 P. Saracco , S. D'Odorico , A. Moorwood , J. G. Cuby

Standard models for deep galaxy counts are based on luminosity functions (LF) with relatively flat faint end ($\alpha\sim-1.0$). Galaxy counts in the B--band exceed the prediction of such models by a factor of 2 to more than 5, forcing the…

天体物理学 · 物理学 2015-06-24 P. Saracco , G. Chincarini , A. Iovino

Angular and spatial correlations are measured for K-band--selected galaxies, 248 having redshifts, 54 with z>1, in two patches of combined area 27 arcmin^2. The angular correlation for K<=21.5 mag is (theta/1.4+/-0.19 arcsec…

天体物理学 · 物理学 2009-10-28 R. G. Carlberg , L. L. Cowie , A. Songaila , E. M. Hu

We present new K-band galaxy number counts from K=13 to 20.5 obtained from $K'$-band surveys in the south galactic pole region, which cover 180.8 arcmin$^2$ to a limiting magnitude of K=19, and 2.21 arcmin$^2$ to K=21. These are currently…

天体物理学 · 物理学 2009-10-30 T. Minezaki , Y. Kobayashi , Y. Yoshii , B. A. Peterson

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…

天体物理学 · 物理学 2009-11-07 J. B. Hutchings , P. B. Stetson , A. Robin , T. Webb

We have selected and analysed the properties of a sample of 2905 Ks<21.5 galaxies in ~ 131 sq.arcmin of the Great Observatories Origins Deep Survey (GOODS) Chandra Deep Field South (CDFS), to obtain further constraints on the evolution of…

天体物理学 · 物理学 2009-11-13 K. I. Caputi , R. J. McLure , J. S. Dunlop , M. Cirasuolo , A. M. Schael

Galaxy number counts in the $K$-, $H$-, $I$-, $R$-, $B$- and $U$-bands from the Durham Extragalactic Astronomy and Cosmology catalogue could be well-fitted over their whole range using luminosity function (LF) parameters derived from the…

星系天体物理 · 物理学 2023-06-16 John Herbert Marr

We present near-IR (J and Ks) number counts and colors of galaxies detected in deep VLT-ISAAC images centered on the Chandra Deep Field and Hubble Deep Field-South for a total area of 13.6 arcmin$^2$. The limiting surface brightness…

天体物理学 · 物理学 2009-11-06 P. Saracco , E. Giallongo , S. Cristiani , S. D'Odorico , A. Fontana , A. Iovino , F. Poli , E. Vanzella

Galaxy counts in the K band, (J-K)-colors, and apparent size distributions of faint galaxies in the Subaru Deep Field (SDF) down to K~24.5 were studied in detail. Special attention has been paid to take into account various selection…

天体物理学 · 物理学 2009-11-06 T. Totani , Y. Yoshii , F. Iwamuro , T. Maihara , K. Motohara

We report the result of a faint quasar survey in a one square degree field. The aim is to test the Y-K/g-z and J-K/i-Y color selection criteria for quasars at faint magnitude, to obtain a complete sample of quasars based on deep optical and…

星系天体物理 · 物理学 2018-02-21 Jinyi Yang , Xue-Bing Wu , Dezi Liu , Xiaohui Fan , Qian Yang , Feige Wang , Ian D. McGreer , Zuhui Fan , Shuo Yuan , Huanyuan Shan

We have used the Keck 10m telescope to count objects as a function of image size in 2 high galactic latitude fields covering 1.5 arcmin^2 and reaching 50% completeness at K=24 and J=24.5 for stellar sources. Counts extend ~1 mag deeper in K…

天体物理学 · 物理学 2009-10-30 Matthew A. Bershady , James D. Lowenthal , David C. Koo

This study presents a wide-field near-infrared (K-band) survey in two fields; SA 68 and Lynx 2. The survey covers an area of 0.6 deg.$^2$, complete to K=16.5. A total of 867 galaxies are detected in this survey of which 175 have available…

天体物理学 · 物理学 2009-10-30 G. P. Szokoly , M. U. Subbarao , A. J. Connolly , B. Mobasher
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