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相关论文: Clustering in the Caltech Faint Galaxy Redshift Su…

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A clustering analysis is performed on two samples of $\sim 600$ faint galaxies each, in two widely separated regions of the sky, including the Hubble Deep Field. One of the survey regions is configured so that some galaxy pairs span angular…

天体物理学 · 物理学 2009-10-31 David W. Hogg , Judith G. Cohen , Roger Blandford

A redshift survey has been carried out in the region of the Hubble Deep Field North using the Low Resolution Imaging Spectrograph at the Keck Observatory. The resulting redshift catalog, which contains 671 entries, is a compendium of our…

We present the techniques used to determine redshifts and to characterize the spectra of objects in the Caltech Faint Galaxy Redshift Survey in terms of spectral classes and redshift quality classes. These are then applied to spectra from…

The results of a spectroscopic investigation of a complete sample of objects with $K_s<20$ mag in a 2 by 7.3 arcmin field at J005325+1234 are reported. Redshifts were successfully obtained for 163 of the 195 objects in the sample; these…

天体物理学 · 物理学 2009-10-30 Judith G. Cohen , Roger Blandford , David W. Hogg , Michael A. Pahre , Patrick L. Shopbell

We present the results of a weak lensing survey of six high-redshift (z > 0.5), X-ray selected clusters of galaxies. We have obtained ultra-deep R-band images of each cluster with the Keck Telescope, and have measured a weak lensing signal…

天体物理学 · 物理学 2009-10-31 D. Clowe , G. Luppino , N. Kaiser , I. Gioia

I review recent progress on determining the spectral energy distributions and luminosity functions for galaxies in the large magnitude limited sample in the region of the HDF-North of the Caltech Faint Galaxy Redshift Survey.

天体物理学 · 物理学 2009-10-31 Judith Cohen

The 2dF Galaxy Redshift Survey has now been completed and has mapped the three-dimensional distribution, and hence clustering, of galaxies in exquisite detail over an unprecedentedly large ($\sim 10^{8} h^{-3}$ Mpc$^{3}$) volume of the…

天体物理学 · 物理学 2007-05-23 Warrick Couch , Matthew Colless , Roberto De Propris

We present 18 spectra, obtained with the Keck 10m telescope, of faint field galaxies (19 $<$ I $<$ 22, 0.2 $<$ z $<$ 0.84) previously imaged by {\it HST's} WFPC2. Though small, our sample appears to be representative of field spirals with a…

天体物理学 · 物理学 2009-10-28 Duncan A. Forbes , Andrew C. Phillips , David C. Koo , Garth D. Illingworth

We present initial results from a redshift survey carried out with the Low Resolution Imaging Spectrograph on the 10~m W. M. Keck Telescope of a field 14.6 arc-min$^2$ in solid angle. In the redshift distribution of the 106 extragalactic…

天体物理学 · 物理学 2016-08-30 J. G. Cohen , D. W. Hogg , M. A. Pahre , R. Blandford

We have conducted a galaxy survey based on low-resolution slitless spectra taken from the automated CFHT-Laval survey. We present redshift distributions for 522 galaxies distributed in 4 distinct regions of the sky. Redshifts are determined…

天体物理学 · 物理学 2015-06-24 M. Beauchemin , E. F. Borra

We discuss the very red objects found in the first field of the Caltech Faint Galaxy Redshift Survey, for which the observations and analysis are now complete. In this field, which is 15 arcmin$^2$ and at J005325+1234 there are 195 objects…

天体物理学 · 物理学 2007-05-23 Judith G. Cohen , David W. Hogg , Roger Blandford , Michael A. Pahre , Patrick L. Shopbell

(abridged) We present a study of the nature and evolution of large-scale structure based on two independent redshift surveys of faint field galaxies conducted with the 176-fiber Norris Spectrograph on the Palomar 200-inch telescope. The two…

天体物理学 · 物理学 2009-10-31 Todd Small , Chung-Pei Ma , Wallace Sargent , Donald Hamilton

{}From deep optical images of three clusters selected by virtue of their X-ray luminosity and/or optical richness (1455+22; $z=0.26$, 0016+16; $z=0.55$ and 1603+43; $z=0.89$), we construct statistically-complete samples of faint field…

天体物理学 · 物理学 2015-06-24 Ian Smail , Richard S. Ellis , Michael J. Fitchett

We present the first high redshift (0.3 < z < 1.1) galaxy clusters found by systematically identifying optical low surface brightness fluctuations in the background sky. Using spectra obtained with the Keck telescope and I-band images from…

天体物理学 · 物理学 2009-10-28 Dennis Zaritsky , Amy E. Nelson , Julianne J. Dalcanton , Anthony H. Gonzalez

We report results based on 35 new spectroscopic redshifts obtained with the Keck Telescope for field galaxies that also have photometry and morphology from survey images taken by the refurbished HST. A sample of 24 redshifts for galaxies…

We present a description of the observations and data reduction procedures for an extensive spectroscopic and multi-band photometric study of nine high redshift, optically-selected cluster candidates. The primary goal of the survey is to…

天体物理学 · 物理学 2009-10-30 J. B. Oke , Marc Postman , Lori Lubin

Since the late 1970's, redshift surveys have been vital for progress in understanding large-scale structure in the Universe. The original CfA redshift survey collected spectra of 20-30 galaxies per clear night on a 1.5 meter telescope; over…

天体物理学 · 物理学 2009-11-06 Marc Davis , Jeffrey Newman

We give a general description of the optical observing strategy of the ROSAT-ESO Flux-Limited X-ray (REFLEX) cluster survey. This presently includes 460 clusters of galaxies selected from the ROSAT All-Sky Survey in the Southern hemisphere,…

The two-point angular correlation function of galaxies, \wte, has been computed from a new survey of faint galaxies covering a 2 deg$^2$ area near the North Galactic Pole. This survey, which is complete to limiting magnitudes \jmag=24 and…

天体物理学 · 物理学 2009-10-22 L. Infante , C. J. Pritchet

We apply clustering-based redshift inference to all extended sources from the Sloan Digital Sky Survey photometric catalogue, down to magnitude r = 22. We map the relationships between colours and redshift, without assumption of the…

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