Results 101 to 110 of about 10,786,884 (386)

Constraining the AGN Luminosity Function from JWST with the X-Ray Background

The Astrophysical Journal Letters, 2023
We predict the X-ray background (XRB) expected from the population of quasars detected by the James Webb Space Telescope spectroscopic surveys over the redshift range z ∼ 4–7.
Hamsa Padmanabhan, Abraham Loeb
doaj   +1 more source

A Derivation of the Luminosity Function of the Kuiper Belt from a Broken Power-Law Size Distribution

, 2008
We have derived a model of the Kuiper belt luminosity function exhibited by a broken power-law size distribution. This model allows direct comparison of the observed luminosity function to the underlying size distribution.
Allen, Bernstein, Bernstein, Bottke, Chiang, Dohnanyi, Fraser, Fuentes, Gladman, Gladman, Gladman, Grundy, Hayashi, J.J. Kavelaars, Jewitt, Kavelaars, Kenyon, Kenyon, Kenyon, Levison, Loredo, Malhotra, O'Brien, Pan, Petit, Safronov, Thommes, Trujillo, Trujillo, Wesley C. Fraser   +29 more
core   +1 more source

A NEW LUMINOSITY FUNCTION FOR GALAXIES AS GIVEN BY THE MASS-LUMINOSITY RELATIONSHIP [PDF]

The Astronomical Journal, 2008
The search for a luminosity function for galaxies both alternative or companion to a Schechter function is a key problem in the reduction of data from catalogs of galaxies. Two luminosity functions for galaxies can be built starting from two distributions of mass as given by the fragmentation. A first overall distribution function is the Kiang function
openaire   +2 more sources

DETAILED SHAPE AND EVOLUTIONARY BEHAVIOR OF THE X-RAY LUMINOSITY FUNCTION OF ACTIVE GALACTIC NUCLEI [PDF]

, 2015
We construct the rest-frame 2–10 keV intrinsic X-ray luminosity function (XLF) of active galactic nuclei (AGNs) from a combination of X-ray surveys from the all-sky Swift BAT survey to the Chandra Deep Field South.
T. Miyaji, T. Miyaji, G. Hasinger, M. Salvato, M. Brusa, N. Cappelluti, F. Civano, F. Civano, S. Puccetti, M. Elvis, H. Brunner, S. Fotopoulou, Y. Ueda, R. E. Griffiths, A. Koekemoer, Masayuki Akiyama, A. Comastri, R. Gilli, G. Lanzuisi, A. Merloni, C. Vignali, C. Vignali   +21 more
semanticscholar   +1 more source

Automated FRAP microscopy for high‐throughput analysis of protein dynamics in chromatin organization and transcription

FEBS Open Bio, EarlyView.
RoboMic is an automated confocal microscopy pipeline for high‐throughput functional imaging in living cells. Demonstrated with fluorescence recovery after photobleaching (FRAP), it integrates AI‐driven nuclear segmentation, ROI selection, bleaching, and analysis.
Selçuk Yavuz, Bart Geverts, Johan A. Slotman, Andrea Sacchetti, Stefan Prekovic, Martin E. van Royen, Adriaan B. Houtsmuller   +6 more
wiley   +1 more source

MAMMOTH-Subaru. V. Effects of Cosmic Variance on Lyα Luminosity Functions at z = 2.2–2.3

The Astrophysical Journal
Cosmic variance introduces significant uncertainties into galaxy number density properties when surveying the high-redshift Universe with a small volume.
Ke Ma, Haibin Zhang, Zheng Cai, Yongming Liang, Nobunari Kashikawa, Mingyu Li, Yunjing Wu, Qiong Li, Xiaohui Fan, Sean D. Johnson, Masami Ouchi   +10 more
doaj   +1 more source

A Maximum Likelihood Calibration of the Tip of the Red Giant Branch Luminosity from High Latitude Field Giants Using Gaia Early Data Release 3 Parallaxes

The Astrophysical Journal, 2022
The calibration of the tip of the red giant branch (TRGB) in the I band has a direct role in determinations of the Hubble constant, a subject of recent interest due to the discrepancy between direct and indirect estimates of its value.
Siyang Li, Stefano Casertano, Adam G. Riess   +2 more
doaj   +1 more source

The luminosities of the brightest cluster galaxies and brightest satellites in SDSS groups

, 2012
We show that the distribution of luminosities of Brightest Cluster Galaxies in an SDSS-based group catalog suggests that BCG luminosities are just the statistical extremes of the group galaxy luminosity function.
Aseem Paranjape, Bautz, Berlind, Bernardi, Bernardi, Bhavsar, Blanton, Cooray, De Lucia, Dobos, Hansen, Hubble, Lin, Loh, Milosavljević, Ravi K. Sheth, Sandage, Schechter, Scott, Sheth, Sheth, Skibba, Tremaine, Yang, Zehavi, Zehavi   +25 more
core   +1 more source

The mid-IR Luminosity Function at z<0.3 from 5MUSES: Understanding the Star-formation/AGN Balance from a Spectroscopic View [PDF]

, 2011
We present rest-frame 15 and 24 um luminosity functions and the corresponding star-forming luminosity functions at ...
Armus, Arnouts, Bothwell, Caputi, Casey Papovich, Chary, Daniel A. Dale, Dey, Elbaz, Fu, George Helou, Hopkins, Hopkins, Houck, Houck, Huang, Kalliopi Dasyra, Le Floc'h, Lee Armus, Lilly, Madau, Menéndez-Delmestre, Murphy, Nurur Rahman, Papovich, Petric, Pope, Pozzi, Pérez-González, Reddy, Rieke, Rujopakarn, Sabrina Stierwalt, Sajina, Sanders, Saunders, Shupe, Veilleux, Werner, Wu, Xu, Yan, Yanling Wu, Yong Shi, Yuan   +44 more
core   +3 more sources

The Luminosity Function of ω Centauri

The Astronomical Journal, 1999
Deep HST-WFPC2 observations of the stellar population in the globular cluster Omega Cen (NGC 5139) have been used to measure the luminosity function of main sequence stars at the low-mass end. Two fields have been investigated, located respectively ~4.6' and ~7' away from the cluster center, or near the half-light radius of this cluster (~4.8').
openaire   +2 more sources