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相关论文: The Evolving Faint-End of the Luminosity Function

200 篇论文

We derive deep luminosity functions (to $M_z=-15$) for galaxies in Abell 1835 ($z=0.25$) and AC 114 ($z=0.31$) and compare these with the local $z'$ luminosity function for 69 clusters. The data show that the faint-end upturn, the excess of…

天体物理学 · 物理学 2009-11-13 Daniel Harsono , Roberto De Propris

In hierarchical cosmologies the evolution of galaxy clustering depends both on cosmological quantities such as Omega and Lambda, which determine how dark matter halos form and evolve, and on the physical processes - cooling, star formation…

天体物理学 · 物理学 2009-09-25 Guinevere Kauffmann , Joerg M. Colberg , Antonaldo Diaferio , Simon D. M. White

We have measured the 3.6 micron luminosity and mass evolution of about 1000 galaxies in 32 clusters at 0.2<z<1.25 with a special attention to methodological issues, as emphasized in this proceeding contribution. We find that the luminosity…

天体物理学 · 物理学 2007-05-23 S. Andreon

We present a new efficient technique for measuring evolution of the galaxy luminosity function. The method reconstructs the evolution over the luminosity-redshift plane using any combination of three input dataset types: 1) number counts,…

宇宙学与河外天体物理 · 物理学 2015-05-18 Simon Dye , Steve Eales

Galaxy redshift surveys are outstanding tools for observational cosmology. Mapping the universe as outlined by galaxies leads to fundamental measurements which refine our knowledge of its structure and evolution. Redshift acquisition has…

天体物理学 · 物理学 2007-05-23 L. Tresse

Using semi-analytic modeling techniques, we calculate the luminosity function of galaxy populations residing in cold dark matter halos of different mass. We pay particular attention to the influence of the reionization of the Universe on…

天体物理学 · 物理学 2011-07-18 A. J. Benson , C. S. Frenk , C. M. Baugh , S. Cole , C. G. Lacey

Studies of the high-redshift rest-frame ultraviolet (UV) luminosity functions (LFs) have typically treated the star-forming galaxy and active galactic nuclei (AGN) populations separately, as they have different survey depth and area…

星系天体物理 · 物理学 2022-10-26 Steven L. Finkelstein , Micaela B. Bagley

We present new results on the cosmological evolution of the near-infrared galaxy luminosity function, derived from the analysis of a new sample of \~22,000 K(AB) < 22.5 galaxies selected over an area of 0.6 square degrees from the Early…

We present the B-band luminosity function and comoving space and luminosity densities for a sample of 2779 I-band selected field galaxies based on multi-color data from the CADIS survey. The sample is complete down to I_815 = 22 without…

We aim to place new, strengthened constraints on the luminosity function (LF) of H-alpha emitting galaxies at redshift z=2.2, and to further constrain the instantaneous star-formation rate density of the universe (rho*). We have used the…

宇宙学与河外天体物理 · 物理学 2015-05-14 Matthew Hayes , Daniel Schaerer , Goran Ostlin

We present the results from a survey of 57 low-redshift Abell galaxy clusters to study the radial dependence of the luminosity function (LF). The dynamical radius of each cluster, r200, was estimated from the photometric measurement of…

天体物理学 · 物理学 2009-11-13 Wayne A. Barkhouse , H. K. C. Yee , Omar López-Cruz

I review a technique for interpreting faint galaxy data which traces the evolution with cosmic time of the galaxy luminosity density, as determined from several deep spectroscopic samples and the HDF. The method relies on the rest frame UV…

天体物理学 · 物理学 2007-05-23 Piero Madau

We present and discuss optical measurements of the faint end of the galaxy luminosity function down to M_R = -10 in five different local environments of varying galaxy density and morphological content. The environments we studied, in order…

天体物理学 · 物理学 2008-11-26 Neil Trentham , R. Brent Tully

Photometric redshifts for galaxies in the Hubble Deep Field are measured. Luminosity functions show steepening of the faint-end slope and mild brightening of M* out to z~3, followed by a decline at higher z; an excess of faint, star-forming…

天体物理学 · 物理学 2007-05-23 M. J. Sawicki , H. Lin , H. K. C. Yee

We explore the properties of 24 field early-type galaxies at 0.20<z<0.75 down to M_B<=-19.30 in a sample extracted from the FORS Deep Field and the William Herschel Deep Field. High S/N intermediate-resolution VLT spectroscopy was…

宇宙学与河外天体物理 · 物理学 2009-11-13 Alexander Fritz , Asmus Boehm , Bodo L. Ziegler

We report the first direct and robust measurement of the faint-end slope of the Lyman-alpha emitter (LAE) luminosity function at z = 5.7. Candidate LAEs from a low-spectral-resolution blind search with IMACS on Magellan-Baade were targeted…

星系天体物理 · 物理学 2015-06-11 Alan Dressler , Alaina Henry , Crystal L. Martin , Marcin Sawicki , Patrick McCarthy , Edward Villaneuva

We place a limit on the logarithmic slope of the luminous quasar luminosity function at z~6 of beta>-3.0 (90%) using gravitational lensing constraints to build on the limit of beta>-3.3 (90%) derived from an analysis of the luminosity…

天体物理学 · 物理学 2009-11-10 Stuart Wyithe

Aims: In this work the luminosity function of QSOs is measured in the redshift range 3.5<z<5.2 for the absolute magnitude interval -21<M_{145}<-28. The determination of the faint end of the luminosity function at these redshifts provides…

天体物理学 · 物理学 2009-11-11 F. Fontanot , S. Cristiani , P. Monaco , M. Nonino , E. Vanzella , W. N. Brandt , A. Grazian , J. Mao

The luminosity function of white dwarfs is a powerful tool for studies of the evolution and formation of the Milky Way. The (theoretical) white dwarf cooling sequence provides a useful indicator of the evolutionary time scales involved in…

天体物理学 · 物理学 2009-10-31 Rene A. Mendez , Maria T. Ruiz