Results 21 to 30 of about 186,945 (281)

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

Anomalous surface brightness fluctuations in NGC 4489 [PDF]

open access: yesAstronomy & Astrophysics, 2001
Anomalously high K-band surface brightness fluctuations (SBF) have been reported in NGC 4489 by Pahre & Mould (1994), Jensen et al. (1996) and Jensen et al. (1998). However, these conclusions were uncertain because of relatively low signal-to-noise data. New high signal-to-noise data for NGC 4489 have been obtained at the NOAO/KPNO 2.1m and the ESO/
Mei, S., Silva, D. R., Quinn, P. J.
openaire   +2 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

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

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

Measuring Distances to Low-luminosity Galaxies Using Surface Brightness Fluctuations [PDF]

open access: yesThe Astrophysical Journal, 2021
Abstract We present an in-depth study of surface brightness fluctuations (SBFs) in low-luminosity stellar systems. Using the MIST models, we compute theoretical predictions for absolute SBF magnitudes in the LSST, HST ACS/WFC, and proposed Roman Space Telescope filter systems.
Johnny P. Greco   +4 more
openaire   +2 more sources

MEASURING INFRARED SURFACE BRIGHTNESS FLUCTUATION DISTANCES WITH HST WFC3: CALIBRATION AND ADVICE [PDF]

open access: yes, 2015
We present new calibrations of the near-infrared (near-IR) surface brightness fluctuation (SBF) distance method for the F110W ( J 110 ?> ) and F160W ( H 160 ?> ) bandpasses of the Wide Field Camera 3 Infrared Channel (WFC3/IR) on the Hubble Space ...
J. Jensen   +7 more
semanticscholar   +1 more source

Surface Brightness Fluctuations as Stellar Population Indicators [PDF]

open access: yesAIP Conference Proceedings, 2009
8 pages, Invited review presented at "Probing Stellar Populations out to the Distant Universe," September 2008, Cefalu ...
John P. Blakeslee   +7 more
openaire   +2 more sources

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