The Dragonfly Nearby Galaxies Survey. III. The Luminosity Function of the M101 Group [PDF]
, 2017 We obtained follow-up HST observations of the seven low surface brightness galaxies discovered with the Dragonfly Telephoto Array in the field of the massive spiral galaxy M101.
S. Danieli +6 more
semanticscholar +1 more source
Evolution of the Luminosity Function [PDF]
Symposium - International Astronomical Union, 1986 In this review, the currently published, complete, spectroscopically identified samples of quasars are assembled to produce a composite luminosity function, independent of evolutionary assumptions. Two interpretations of the change with cosmic time provide reasonable fits to the data.
openaire +2 more sources
The Properties and Luminosity Function of Extremely Low Luminosity Galaxies [PDF]
The Astrophysical Journal, 2005 We examine a sample of low redshift (10 < d < 150 Mpc) galaxies including galaxies with r-band absolute magnitudes as faint as -12.5 (for h=1), selected from the Sloan Digital Sky Survey Data Release 2 (SDSS). The sample is unique in containing galaxies of extremely low luminosities in a wide range of environments, selected with uniform and well ...
J. Brinkmann +6 more
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The quasar luminosity function at redshift 4 with the Hyper Suprime-Cam Wide Survey [PDF]
, 2017 We present the luminosity function of z=4 quasars based on the Hyper Suprime-Cam Subaru Strategic Program Wide layer imaging data in the g, r, i, z, and y bands covering 339.8 deg^2.
M. Akiyama +26 more
semanticscholar +1 more source
The Truncated Lognormal Distribution as a Luminosity Function for SWIFT-BAT Gamma-Ray Bursts
Galaxies, 2016 The determination of the luminosity function (LF) in Gamma ray bursts (GRBs) depends on the adopted cosmology, each one characterized by its corresponding luminosity distance.
Lorenzo Zaninetti
doaj +1 more source
The z ∼ 6 Luminosity Function Fainter than −15 mag from the Hubble Frontier Fields: The Impact of Magnification Uncertainties [PDF]
, 2016 We use the largest sample of galaxies to date from the first four Hubble Frontier Fields clusters to set constraints on the shape of the luminosity functions (LFs) to fainter than mag.
R. Bouwens +5 more
semanticscholar +1 more source
On the Number of Galaxies at High Redshift
Galaxies, 2015 The number of galaxies at a given flux as a function of the redshift, z, is derived when the z-distance relation is non-standard. In order to compare different models, the same formalism is also applied to the standard cosmology.
Lorenzo Zaninetti
doaj +1 more source
The Planetary Nebula Luminosity Function [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractAlthough the method has no theoretical explanation, the [Oiii]λ5007Å planetary nebula luminosity function (PNLF) is an extremely valuable tool for obtaining accurate (< 10%) extragalactic distances out to ~ 18 Mpc. Because the PNLF works in large galaxies of all Hubble types, it is one of the best tools we have for cross-checking the results
openaire +5 more sources
The evolving far-IR galaxy luminosity function and dust-obscured star-formation rate density out to z~5 [PDF]
, 2017 We present a new measurement of the evolving galaxy far-IR luminosity function (LF) extending out to redshifts z~5, with resulting implications for the level of dust-obscured star-formation density in the young Universe. To achieve this we have exploited
M. Koprowski +9 more
semanticscholar +1 more source
Theoretical Systematics in Testing the Cosmological Principle with the Kinematic Quasar Dipole
The Astrophysical Journal, 2023 The Cosmological Principle (CP) is part of the foundation that underpins the standard model of the Universe. In the era of precision cosmology, when stress tests of the standard model are uncovering various tensions and possible anomalies, it is critical
Caroline Guandalin +3 more
doaj +1 more source