中文
相关论文

相关论文: Completeness - I. Revised, reviewed and revived

200 篇论文

This paper continues our development of non-parametric tests for analysing the completeness in apparent magnitude of magnitude-redshift surveys. The purpose of this third and final paper in our completeness series is two-fold: firstly we…

宇宙学与河外天体物理 · 物理学 2015-05-28 Russell Johnston , Luis Teodoro , Martin Hendry

This is the second paper in our completeness series which addresses some of the issues raised in the previous article by Johnston, Teodoro & Hendry (2007) in which we developed statistical tests for assessing the completeness in apparent…

宇宙学与河外天体物理 · 物理学 2010-05-24 Luis Teodoro , Russell Johnston , Martin Hendry

A new tool is proposed for finding out the completeness limit in apparent magnitude of a magnitude-redshift sample. The technique, closely related to the statistical test proposed by Efron & Petrosian (1992), presents a real improvement…

天体物理学 · 物理学 2015-06-24 Stephane Rauzy

We present the application of a robust test of galaxy catalogue completeness to the gwcosmo pipeline. The method implements a straightforward statistical test for determining the apparent magnitude completeness limit of a magnitude-redshift…

宇宙学与河外天体物理 · 物理学 2026-04-30 L. Datrier , M. Hendry

Luminosity functions and their integrated luminosity densities are presented for the 6dF Galaxy Survey (6dFGS). This ongoing survey ultimately aims to measure around 150,000 redshifts and 15,000 peculiar velocities over almost the entire…

天体物理学 · 物理学 2009-11-11 D. Heath Jones , Bruce A. Peterson , Matthew Colless , Will Saunders

The unknown nature of dark energy motivates continued cosmological tests of large-scale gravitational physics. We present a new consistency check based on the relative amplitude of non-relativistic galaxy peculiar motions, measured via…

The redshift distribution of galaxy lenses in known gravitational lens systems provides a powerful test that can potentially discriminate amongst cosmological models. However, applications of this elegant test have been curtailed by two…

天体物理学 · 物理学 2009-06-23 Pedro R. Capelo , Priyamvada Natarajan

The number density and correlation function of galaxies are two key quantities to characterize the distribution of the observed galaxy population. High-$z$ spectroscopic surveys, which usually involve complex target selection and are…

星系天体物理 · 物理学 2024-02-05 Jiacheng Meng , Cheng Li , Houjun Mo , Yangyao Chen , Kai Wang

The upcoming imaging survey of the Chinese Space-station Survey Telescope (CSST) will deliver high-resolution imaging of an unprecedented number of galaxies for galaxy studies. To understand CSST's capability, and to support the preparation…

星系天体物理 · 物理学 2026-04-28 Ziqi Ma , Si-Yue Yu , Taotao Fang , Jinyi Shangguan , Zhao-Yu Li , Luis C. Ho

Although photometric redshifts (photo-z's) are crucial ingredients for current and upcoming large-scale surveys, the high-quality spectroscopic redshifts currently available to train, validate, and test them are substantially…

We introduce two new pair statistics, which relate close galaxy pairs to the merger and accretion rates. We demonstrate the importance of correcting these (and other) pair statistics for selection effects related to sample depth and…

天体物理学 · 物理学 2016-08-30 D. R. Patton , R. G. Carlberg , R. O. Marzke , C. J. Pritchet , L. N. da Costa , P. S. Pellegrini

We present number counts, luminosity functions (LFs) and luminosity densities of galaxies obtained using the Sloan Digital Sky Survey Sixth Data Release in all SDSS photometric bands. Thanks to the SDSS DR6, galaxy statistics have increased…

天体物理学 · 物理学 2009-11-19 Antonio D. Montero-Dorta , Francisco Prada

The size-mass galaxy distribution is a key diagnostic for galaxy evolution. Massive compact galaxies are potential surviving relics of a high-redshift phase of star formation. Some of these could be nearly unresolved in SDSS imaging and…

星系天体物理 · 物理学 2020-12-08 Ivan K. Baldry , Tricia Sullivan , Raffaele Rani , Sebastian Turner

We report redshifts, magnitudes and morphological classifications for 5369 galaxies with $m_B \leq 15.5$ and 57 galaxies fainter than this limit, in two regions covering a total of 1.70 steradians in the southern celestial hemisphere. The…

We present 10 new gamma-ray burst (GRB) redshifts and another five redshift limits based on host galaxy spectroscopy obtained as part of a large program conducted at the Very Large Telescope (VLT). The redshifts span the range 0.345 < z <…

宇宙学与河外天体物理 · 物理学 2012-05-31 P. Jakobsson , J. Hjorth , D. Malesani , R. Chapman , J. P. U. Fynbo , N. R. Tanvir , B. Milvang-Jensen , P. M. Vreeswijk , G. Letawe , R. L. C. Starling

We critically investigate current statistical tests applied to high redshift clusters of galaxies in order to test the standard cosmological model and describe their range of validity. We carefully compare a sample of high-redshift,…

宇宙学与河外天体物理 · 物理学 2015-05-30 Ben Hoyle , Raul Jimenez , Licia Verde , Shaun Hotchkiss

The Zwicky Catalog of galaxies (ZC), with m_Zw<=15.5mag, has been the basis for the Center for Astrophysics (CfA) redshift surveys. To date, analyses of the ZC and redshift surveys based on it have relied on heterogeneous sets of galaxy…

Key cosmological applications require the three-dimensional galaxy distribution on the entire celestial sphere. These include measuring the gravitational pull on the Local Group, estimating the large-scale bulk flow and testing the…

宇宙学与河外天体物理 · 物理学 2013-12-18 Maciej Bilicki , Thomas H. Jarrett , John A. Peacock , Michelle E. Cluver , Louise Steward

We present the redshift results from a Very Large Telescope program aimed at optimizing the legacy value of the Swift mission: to characterize a homogeneous, X-ray selected, sample of 69 GRB host galaxies. 19 new redshifts have been…

宇宙学与河外天体物理 · 物理学 2013-09-20 P. Jakobsson , R. Chapman , J. Hjorth , D. Malesani , J. P. U. Fynbo , B. Milvang-Jensen , T. Kruhler , N. R. Tanvir

We measure and analyse the redshift distribution N(z) of magnitude-selected samples using spectroscopic redshift measurement from the magnitude-selected VIMOS VLT Deep Survey (VVDS) with 17<iAB<24.75. We compute the N(z) and provide…

‹ 上一页 1 2 3 10 下一页 ›