Results 11 to 20 of about 10,764,000 (383)
The Form of the Luminosity Function
The Astrophysical Journal, 1924 Frederick H. Seares
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The bolometric quasar luminosity function at z = 0–7 [PDF]
Monthly notices of the Royal Astronomical Society, 2020 In this paper, we provide updated constraints on the bolometric quasar luminosity function (QLF) from z = 0 to z = 7. The constraints are based on an observational compilation that includes observations in the rest-frame IR, B band, UV, soft, and hard ...
Xuejian Shen +6 more
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On the FRB luminosity function – – II. Event rate density [PDF]
Monthly notices of the Royal Astronomical Society, 2020 The luminosity function of Fast Radio Bursts (FRBs), defined as the event rate per unit cosmic co-moving volume per unit luminosity, may help to reveal the possible origins of FRBs and design the optimal searching strategy. With the Bayesian modelling,
R. Luo +7 more
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The Faint End of the Quasar Luminosity Function at z ∼ 5 from the Subaru Hyper Suprime-Cam Survey [PDF]
Astrophysical Journal, 2020 We present the quasar luminosity function at z ∼ 5 derived from the optical wide-field survey data obtained as a part of the Subaru strategic program (SSP) with the Hyper Suprime-Cam (HSC).
M. Niida +19 more
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The Luminosity Function of Galaxies in Some Nearby Clusters
UHD Journal of Science and Technology, 2021 In the present work, the galaxy luminosity function (LF) has been studied for a sample of seven clusters in the redshift range (0.0 ≲ z ≲ 0.1), within Abell radius (1.5 h−1 Mpc), in the five SDSS passbands ugriz.
Mariwan Ahmed Rasheed +1 more
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On the mass distribution of stars in the solar neighborhood [PDF]
Serbian Astronomical Journal, 2006 The present authors analyze samples consisting of Hipparcos stars. Based on the corresponding HR diagrams they estimate masses of Main-Sequence stars from their visual magnitudes. They find that already beyond the heliocentric radius of 10 pc the effects
Ninković S., Trajkovska V.
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THE PROTOSTELLAR LUMINOSITY FUNCTION [PDF]
The Astrophysical Journal, 2011 The protostellar luminosity function (PLF) is the present-day luminosity function of the protostars in a region of star formation. It is determined using the protostellar mass function (PMF) in combination with a stellar evolutionary model that provides the luminosity as a function of instantaneous and final stellar mass. As in McKee & Offner (2010)
Christopher F. McKee +1 more
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The Luminosity Function of M3 [PDF]
The Astrophysical Journal, 1999 We present a high precision, large sample luminosity function (LF) for the Galactic globular cluster M3. With a combination of ground based and Hubble Space Telescope data we cover the entire radial extent of the cluster. The observed LF is well fit by canonical standard stellar models from the red giant branch (RGB) tip to below the main sequence ...
Oscar Straniero +8 more
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The subdwarf luminosity function [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 Using data from the Sloan Digital Sky Survey Early Data Release and SuperCOSMOS Sky Survey scans of POSS-I plates we identify a sample of 2600 subdwarfs using reduced proper motion methods and strict selection criteria. This forms one of the largest and most reliable samples of candidate subdwarfs known, and enables us to determine accurate luminosity ...
Andrew Digby +4 more
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Evolution of the AGN UV luminosity function from redshift 7.5 [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Determinations of the ultraviolet (UV) luminosity function of active galactic nuclei (AGN) at high redshifts are important for constraining the AGN contribution to reionization and understanding the growth of supermassive black holes.
Girish Kulkarni, G. Worseck, J. Hennawi
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