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相关论文: The Evolution of the Optical Galaxy Luminosity Fun…

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We present the $R$-band luminosity function for a sample of 18678 galaxies, with average redshift $z = 0.1$, from the Las Campanas Redshift Survey. The luminosity function may be fit by a Schechter function with $M^* = -20.29 \pm 0.02 + 5…

We investigate the evolution of the galaxy stellar mass function at high-redshift ($z\ge 5$) using a pair of large cosmological hydrodynamical simulations: {\em MassiveBlack} and {\em MassiveBlack-II}. By combining these simulations we can…

宇宙学与河外天体物理 · 物理学 2015-06-12 Stephen M. Wilkins , Tiziana Di Matteo , Rupert Croft , Nishikanta Khandai , Yu Feng , Andrew Bunker , William Coulton

The two major functions in galaxy evolution that we would like to measure are the stellar populations in galaxies, and their time-derivative, the star formation rate. Especially at redshifts above 1, both of these measures are benefiting…

天体物理学 · 物理学 2007-05-23 Matthew Malkan

We characterize the luminosity functions of galaxies residing in $z\sim0$ groups and clusters over the broadest ranges of luminosity and mass reachable by the Sloan Digital Sky Survey. Our measurements cover four orders of magnitude in…

星系天体物理 · 物理学 2016-05-27 Ting-Wen Lan , Brice Ménard , Houjun Mo

We explore the nature of the evolution of faint field galaxies by assuming that the local luminosity function is not well defined. We use a non-negative least squares technique to derive a near optimal set of local luminosity functions for…

天体物理学 · 物理学 2009-10-22 Caryl Gronwall , David C. Koo

The luminosity functions of E/S0 galaxies are constructed in 3 different redshift bins (0.2 < z < 0.55, 0.55 < z < 0.8, 0.8 < z < 1.2), using the data from the Hubble Space Telescope Medium Deep Survey (HST MDS) and other HST surveys. These…

天体物理学 · 物理学 2016-08-30 Myungshin Im , Richard E. Griffiths , Kavan U. Ratnatunga , Vicki L. Sarajedini

The measurement of the Star Formation Rate density of the Universe is of prime importance in understanding the formation and evolution of galaxies. The [OII]3727 emission line flux, easy to measure up to z~1.4 within deep redshift surveys…

天体物理学 · 物理学 2009-11-07 J. Gallego , C. E. Garcia-Dabo , J. Zamorano , A. Aragon--Salamanca , M. Rego

We present a model to understand the redshift evolution of the UV luminosity and stellar mass functions of Lyman Break Galaxies. Our approach is based on the assumption that the luminosity and stellar mass of a galaxy is related to its dark…

宇宙学与河外天体物理 · 物理学 2015-06-12 Sandro Tacchella , Michele Trenti , C. Marcella Carollo

The determination of the galaxy luminosity function is an active and fundamental field in observational cosmology. In this paper we propose a cost effective way of measuring galaxy luminosity functions at faint magnitudes. Our technique…

天体物理学 · 物理学 2009-10-28 M. U. SubbaRao , A. J. Connolly , A. S. Szalay , D. C. Koo

AIMS: We have compiled one of the largest normal-galaxy samples ever to probe X-ray luminosity function evolution separately for early and late-type systems. METHODS: We selected 207 normal galaxies up to redshift z~1.4, with data from four…

天体物理学 · 物理学 2009-11-13 P. Tzanavaris , I. Georgantopoulos

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

Photometric redshifts have been determined for the galaxies in the Hubble Deep Field. The resulting redshift distribution shows two peaks: one at z~0.6 and one at z~2.2. Luminosity functions derived from the redshifts show strong luminosity…

天体物理学 · 物理学 2009-10-28 Stephen D. J. Gwyn , F. D. A. Hartwick

A first new luminosity functions of galaxies can be built starting from a left truncated beta probability density function, which is characterized by four parameters. In the astrophysical conversion, the number of parameters increases by…

宇宙学与河外天体物理 · 物理学 2014-03-12 L. Zaninetti

Knowledge of both the global star formation history of the universe and the nature of individual star-forming galaxies at different look-back times is essential to our understanding of galaxy formation and evolution. Deep redshift surveys…

天体物理学 · 物理学 2009-11-10 S. Pascual

We present new measurements of rest-UV luminosity functions and angular correlation functions from 4,100,221 galaxies at z~2-7 identified in the Subaru/Hyper Suprime-Cam survey and CFHT Large-Area U-band Survey. The obtained luminosity…

The evolution in the comoving space density of the global average galaxy star formation rate (SFR) out to a redshift around unity is well established. Beyond z~1 there is growing evidence that this evolution is flat or even increasing,…

天体物理学 · 物理学 2008-11-26 A. M. Hopkins

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

Luminous Compact Blue Galaxies (LCBGs) are compact, star-forming galaxies that are rarely observed in the local universe but abundant at z=1. This increase in LCBG number density over cosmic lookback time roughly follows the increase in the…

星系天体物理 · 物理学 2021-03-10 L. R. Hunt , D. J. Pisano , S. M. Crawford , M. A. Bershady , G. D. Wirth

We investigate the evolution of the faint-end slope of the luminosity function, $\alpha$, using semi-analytical modeling of galaxy formation. In agreement with observations, we find that the slope can be fitted well by $\alpha (z) =a+b z$,…

天体物理学 · 物理学 2009-11-13 S. Khochfar , J. Silk , R. A. Windhorst , R. E. Ryan