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Redshift surveys like the Sloan Digital Sky Survey (SDSS) have given a very precise measurement of the galaxy luminosity function down to about M_R = -17 (~ M_B = -16). Fainter absolute magnitudes cannot be probed because of the flux limit…

Astrophysics · Physics 2009-11-10 Neil Trentham , Leda Sampson , Manda Banerji

A SST survey in the NOAO Deep-Wide Field in Bo\"otes provides a complete, 8-micron-selected sample of galaxies to a limiting (Vega) magnitude of 13.5. In the 6.88 deg$^2$ field sampled, 79% of the 4867 galaxies have spectroscopic redshifts,…

We present a novel approach for measuring the two-point correlation function of galaxies in narrow pencil beam surveys with varying depths. Our methodology is utilized to expand high-redshift galaxy clustering investigations up to $z \sim…

Astrophysics of Galaxies · Physics 2024-08-21 Nicolò Dalmasso , Michele Trenti , Nicha Leethochawalit

We present a hierarchical Bayesian framework designed to infer the luminosity function of any class of object by jointly modelling data from multiple surveys with varying depth, completeness, and sky coverage. Our method explicitly accounts…

Lensing probabilities of quasars with image separations greater than \Delta\theta and flux density ratios less than q_{\mathrm{r}} are calculated by foreground dark matter halos in a flat, cosmological constant dominated (\LambdaCDM)…

Astrophysics · Physics 2009-11-07 Da-Ming Chen

We present a statistical study of the luminosity functions of galaxies surrounding luminous red galaxies (LRGs) at average redshifts <z>=0.34 and <z>=0.65. The luminosity functions are derived by extracting source photometry around more…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Tomer Tal , David A. Wake , Pieter G. van Dokkum , Frank C. van den Bosch , Donald P. Schneider , Jon Brinkmann , Benjamin A. Weaver

We present the first determination of the near-infrared K-band luminosity function of field galaxies from a wide field K-selected redshift survey. The best fit Schechter function parameters are $M^* = -23.12 +5log(h)$, $\alpha = -0.91$, and…

Astrophysics · Physics 2009-06-16 J. P. Gardner , R. M. Sharples , C. S. Frenk , B. E. Carrasco

We use very deep UGRI multi-field imaging obtained at the Keck telescope to study the evolution of the rest-frame 1700A galaxy luminosity function as the Universe doubles its age from z~4 to z~2. The depth of our imaging allows us to…

Astrophysics · Physics 2009-11-13 Marcin Sawicki , David Thompson

We present a new maximum likelihood method for the calculation of galaxy luminosity functions from multi-band photometric surveys without spectroscopic data. The method evaluates the likelihood of a trial luminosity function by directly…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Daniel Christlein , Eric Gawiser , Danilo Marchesini , Nelson Padilla

We present a luminosity function for low surface brightness (LSB) galaxies identified in the APM survey of Impey et al 1996. These galaxies have central surface brightnesses in B in the range 22 < mu < 25. Using standard maximum-likelihood…

Astrophysics · Physics 2009-10-30 D. Sprayberry , C. D. Impey , M. J. Irwin , G. D. Bothun

We study the bivariate size-luminosity distribution of Lyman Break Galaxies (LBGs) selected at redshifts around 4 and 5 in GOODS and the HUDF fields. We model the size-luminosity distribution as a combination of log-normal distribution (in…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Kuang-Han Huang , Henry C. Ferguson , Swara Ravindranath , Jian Su

Measuring and calibrating relations between cluster observables is critical for resource-limited studies. The mass-richness relation of clusters offers an observationally inexpensive way of estimating masses. Its calibration is essential…

We have re-examined the nature of the cluster galaxy luminosity function using the data from the Edinburgh-Durham Southern Galaxy Catalogue and the Edinburgh-Milano Redshift Survey. We derive a best fit luminosity function over the range…

Astrophysics · Physics 2015-06-24 S. L. Lumsden , C. A. Collins , R. C. Nichol , V. R. Eke , L. Guzzo

The WISE satellite surveyed the entire sky multiple times in four infrared wavelengths (3.4, 4.6, 12, and $22\,\mu$m; Wright et al. 2010). The unprecedented combination of coverage area and depth gives us the opportunity to measure the…

Astrophysics of Galaxies · Physics 2018-10-17 S. E. Lake , E. L. Wright , R. J. Assef , T. H. Jarrett , S. Petty , S. A. Stanford , D. Stern , C. -W. Tsai

We have analysed a sample of 1292 4.5 micron-selected galaxies at z>=3, over 0.6 square degrees of the UKIRT Infrared Deep Survey (UKIDSS) Ultra Deep Survey (UDS). Using photometry from the U band through 4.5 microns, we have obtained…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 K. I. Caputi , M. Cirasuolo , J. S. Dunlop , R. J. McLure , D. Farrah , O. Almaini

We present rest-frame UV \textit{Hubble Space Telescope} imaging of the largest and most complete sample of 23 long duration gamma-ray burst (GRB) host galaxies between redshifts 4 and 6. Of these 23, we present new WFC3/F110W imaging for…

Astrophysics of Galaxies · Physics 2023-08-29 Huei Sears , Ryan Chornock , Jay Strader , Daniel A. Perley , Peter K. Blanchard , Raffaella Margutti , Nial R. Tanvir

Magnification changes the observed number counts of galaxies on the sky. This biases the observed tangential shear profiles around galaxies, the so-called galaxy-galaxy lensing (GGL) signal, and the related excess mass profile.…

Cosmology and Nongalactic Astrophysics · Physics 2021-12-07 Sandra Unruh , Peter Schneider , Stefan Hilbert , Patrick Simon , Sandra Martin , Jorge Corella Puertas

We consider the effect of lensing magnification on high redshift sources in the case that magnification varies on the sky, as expected in wide fields of view or within observed galaxy clusters. We give expressions for number counts, flux…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Bhuvnesh Jain , Marcos Lima

Gravitational lensing by massive galaxy clusters enables faint distant galaxies to be more abundantly detected than in blank fields, thereby allowing one to construct galaxy luminosity functions (LFs) to an unprecedented depth at high…

Cosmology and Nongalactic Astrophysics · Physics 2025-07-15 Jiashuo Zhang , Jeremy Lim , Tom Broadhurst , Sung Kei Li , Man Cheung Li , Giorgio Manzoni , Rogier Windhorst