Results 31 to 40 of about 135,506 (273)

Testing the Surface Brightness Fluctuation Method on Dwarf Galaxies in the COSMOS Field [PDF]

open access: yes, 2023
Dwarf galaxies are important tracers of small-scale cosmological structure, yet much of our knowledge about these systems comes from the limited sample of dwarf galaxies within the Local Group.
Lauren M. Foster   +2 more
semanticscholar   +1 more source

Yonsei Evolutionary Population Synthesis (YEPS) Model. III. Surface Brightness Fluctuation of Normal and Helium-enhanced Simple Stellar Populations [PDF]

open access: yesAstrophysical Journal Supplement Series, 2020
We present an evolutionary population synthesis model of the surface brightness fluctuation (SBF) for normal and He-enriched simple stellar populations (SSPs).
C. Chung   +4 more
semanticscholar   +1 more source

Surface brightness fluctuations, tracers of stellar mass-loss? [PDF]

open access: bronzeProceedings of the International Astronomical Union, 2009
AbstractWe present optical and IR integrated colors and SBF magnitudes, computed from stellar population synthesis models that include emission from the dusty envelopes surrounding mass-loosing TP-AGB stars. We explore the effects of varying the mass-loss rate by one order of magnitude around the fiducial value, modifying accordingly both the stellar ...
Rosa A. González‐Lópezlira   +4 more
openalex   +3 more sources

A Dynamic Threshold Cloud Detecting Approach based on the Brightness Temperature from FY-2 VISSR Data [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The traditional statistical methods and radiation transfer theory methods for cloud detecting have a high adaptability just only in those areas with a uniform surface coverage and noncomplex terrain.
X. Daxiang   +3 more
doaj   +1 more source

Surface-brightness fluctuations in stellar populations [PDF]

open access: yesProceedings of the International Astronomical Union, 2006
Resumen en: A new theoretical calibration of surface-brightness fluctuations (SBF) for single age, single metallicity stellar populations is presented for the optic...
A. Aparicio, A. Marín-Franch
openaire   +2 more sources

Research on the influence of light intensity on digital image correlation measurement accuracy in the testing of concrete

open access: yes矿业科学学报, 2023
When the surface strain field of concrete structure is measured by digital image correlation(DIC)technology under complex light conditions, the decorrelation effect of the pattern will be caused by the variation in light intensity.
Yang Denghui   +5 more
doaj   +1 more source

Surface brightness fluctuations and the distance to the Virgo Cluster

open access: bronzeThe Astrophysical Journal, 1989
Preliminary results from a project to measure the fluxes of giant stars in M32, NGC 3379, and five Virgo Cluster galaxies are presented. Since the Virgo Cluster galaxies are approximately equidistant, variations in observed fluctuation amplitude from galaxy to galaxy can be ascribed to variations in absolute luminosity of the giant stars in the ...
J. Tonry   +2 more
openalex   +3 more sources

The Next Generation Virgo Cluster Survey (NGVS). XVIII. Measurement and Calibration of Surface Brightness Fluctuation Distances for Bright Galaxies in Virgo (and Beyond) [PDF]

open access: yes, 2018
We describe a program to measure surface brightness fluctuation (SBF) distances to galaxies observed in the Next Generation Virgo Cluster Survey (NGVS), a photometric imaging survey covering 104 deg2 of the Virgo cluster in the u*, g, i, and z bandpasses
M. Cantiello   +9 more
semanticscholar   +1 more source

Distances from Surface Brightness Fluctuations [PDF]

open access: yes, 1999
Invited review article to appear in: `Post-Hipparcos Cosmic Candles', A. Heck & F. Caputo (Eds), Kluwer Academic Publ., Dordrecht, in press.
John L. Tonry   +2 more
openaire   +4 more sources

Stellar populations and surface brightness fluctuations: new observations and models [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 2001
24 pages with 17 embedded figures.
John P. Blakeslee   +2 more
openalex   +4 more sources

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