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Related papers: An Empirically Based Model for Predicting Infrared…

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We use the SCUBA-2 submillimeter camera mounted on the JCMT to obtain extremely deep number counts at 450 and 850um. We combine data on two cluster lensing fields, A1689 and A370, and three blank fields, CDF-N, CDF-S, and COSMOS, to measure…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Chian-Chou Chen , Lennox L. Cowie , Amy J. Barger , Caitlin. M. Casey , Nicholas Lee , David B. Sanders , Wei-Hao Wang , Jonathan P. Williams

We estimate the number counts of line emitters at high redshift and their evolution with cosmic time based on a combination of photometry and spectroscopy. We predict the H$\alpha$, H$\beta$, [OII], and [OIII] line fluxes for more than…

We present the Spitzer MIPS 24 micron source counts in the Extragalactic First Look Survey main, verification and ELAIS-N1 fields. Spitzer's increased sensitivity and efficiency in large areal coverage over previous infrared telescopes,…

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…

Astrophysics · Physics 2009-10-22 Caryl Gronwall , David C. Koo

Though half of cosmic starlight is absorbed by dust and reradiated at long wavelengths (3$\mu$m-3mm), constraints on the infrared through millimeter galaxy luminosity function (the `IRLF') are poor in comparison to the rest-frame…

Using the 2MASS 2nd Incremental Data Release and the Zodiacal-Subtracted Mission Average maps of COBE/DIRBE, we estimate the cosmic background in the J (1.25 micron) and K (2.2 microns) bands using selected areas representing 550 square…

Astrophysics · Physics 2009-11-06 L. Cambresy , W. T. Reach , C. A. Beichman , T. H. Jarrett

We study the origin of the extragalactic diffuse gamma-ray background using the data from the Fermi telescope. To estimate the background level, we count photons at high Galactic latitudes |b|>60 degrees. Subtracting photons associated to…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 A. Neronov , D. V. Semikoz

We perform a joint fit to differential number counts from Spitzer's MIPS and Herschel's SPIRE instruments, and angular power spectra of cosmic infrared background (CIB) anisotropies from SPIRE, Planck, the Atacama Cosmology Telescope, and…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Graeme E. Addison , Joanna Dunkley , J. Richard Bond

We present a new evolutionary model that describes the population properties of radio sources at frequencies <5 GHz, thus complementing the De Zotti et al. (2005) model, holding at higher frequencies. We find that simple analytic luminosity…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Marcella Massardi , Anna Bonaldi , Mattia Negrello , Sara Ricciardi , Alvise Raccanelli , Gianfranco De Zotti

A newly developed isochrone synthesis algorithm for the photometric evolution of galaxies is described. Two initial mass functions, IMFs, in particular, the recent IMF determined by Kroupa, Tout, and Gilmore, three photometric…

Astrophysics · Physics 2016-08-30 Pedro Colin

Redshift and luminosity distributions are essential for understanding the cosmic evolution of extragalactic objects and phenomena, such as galaxies, gamma-ray bursts, and fast radio bursts (FRBs). For FRBs, these distributions are primarily…

High Energy Astrophysical Phenomena · Physics 2025-06-12 Om Gupta , Paz Beniamini , Pawan Kumar , Steven L. Finkelstein

The zodiacal foreground for a highly sensitive space infrared interferometer is predicted for various observing locations. For the predictions we use a model that was derived from measurements of the Cosmic Background Explorer (COBE). We…

Astrophysics · Physics 2009-11-06 M. Landgraf , R. Jehn

We measure the redshift-dependent luminosity function and the comoving radial density of galaxies in the Sloan Digital Sky Survey Data Release 1 (SDSS DR1). Both measurements indicate that the apparent number density of bright galaxies…

Astrophysics · Physics 2009-11-10 Jon Loveday

We use a 24 micron selected sample containing more than 8,000 sources to study the evolution of star-forming galaxies in the redshift range from z=0 to z~3. We obtain photometric redshifts for most of the sources in our survey using a…

Measurements of galaxy clustering are now becoming possible over a range of redshifts out to z=3. We use a semi-analytic model of galaxy formation to compute the expected evolution of the galaxy correlation function with redshift. We…

Astrophysics · Physics 2009-10-31 C. M. Baugh , A. J. Benson , S. Cole , C. S. Frenk , C. G. Lacey

Cosmic background radiation, both diffuse and discrete in nature, produced at different cosmic epochs before and after recombination, provides key information on the evolution of cosmic structures. We discuss the main classes of sources…

Cosmology and Nongalactic Astrophysics · Physics 2025-03-24 Carlo Burigana , Tiziana Trombetti , Matteo Bonato , Adélie Gorce , Luigi Toffolatti

In order to improve the fit to the optical counts, the multi-wavelength source count model of Rowan-Robinson (2001) is improved in two ways. First, density evolution is incorporated to correspond to the mergers in hierarchical models of…

Astrophysics · Physics 2009-11-07 A. J. King , M. Rowan-Robinson

We compile one of the largest ever samples to probe the X-ray normal galaxy luminosity function and its evolution with cosmic time. In particular, we select 207 galaxies (106 late and 101 early-type systems) from the Chandra Deep Field…

Astrophysics · Physics 2008-01-30 I. Georgantopoulos , P. Tzanavaris

In Paper I (Rowan-Robinson 2024), models derived in 2009 to fit mid-infrared (8-24 micron) source counts from the IRAS, ISO and Spitzer missions, were found to provide an excellent fit to deep counts at 7.7-21 mu with JWST, demonstrating…

Astrophysics of Galaxies · Physics 2025-05-01 Michael Rowan-Robinson