Results 21 to 30 of about 162,803 (278)

Cosmic distances from surface brightness fluctuations [PDF]

open access: bronzeProceedings of the International Astronomical Union, 2012
AbstractHigh spatial-resolution measurements of surface brightness fluctuations (SBFs) with the Hubble Space Telescope (HST) provide the most precise distances available to early-type galaxies beyond the Local Group. The observable SBF magnitude in a given bandpass is a basic property of any stellar system, corresponding to a ratio of the first and ...
John P. Blakeslee
openalex   +3 more sources

Inferences from Surface Brightness Fluctuations of Zwicky 3146 via the Sunyaev–Zel’dovich Effect and X-Ray Observations [PDF]

open access: goldAstrophysical Journal, 2023
The galaxy cluster Zwicky 3146 is a sloshing cool-core cluster at z = 0.291 that in Sunyaev–Zel’dovich (SZ) imaging does not appear to exhibit significant pressure substructure in the intracluster medium.
C. Romero   +18 more
openalex   +3 more sources

Power spectrum estimation methods on intracluster medium surface brightness fluctuations [PDF]

open access: greenEPJ Web of Conferences, 2023
Accurate estimation of galaxy cluster masses is a central problem in cosmology. Turbulence is believed to introduce significant deviations from the hydrostatic mass estimates.
Mark D. Bishop   +3 more
openalex   +3 more sources

The Distance to the Coma Cluster from Surface Brightness Fluctuations

open access: yesThe Astrophysical Journal, 1997
We report on the first determination of the distance to the Coma Cluster based on surface brightness fluctuation (SBF) measurements obtained from Hubble Space Telescope WFPC2 observations of the bright E0 galaxy NGC 4881 in the Coma Cluster and ground ...
Bjarne Thomsen   +7 more
core   +4 more sources

Can AGN and galaxy clusters explain the surface brightness fluctuations of the cosmic X-ray background? [PDF]

open access: green, 2016
Fluctuations of the surface brightness of cosmic X-ray background (CXB) carry unique information about faint and low luminosity source populations, which is inaccessible for conventional large-scale structure (LSS) studies based on resolved sources.
Gilfanov, Marat   +3 more
core   +3 more sources

The ACS Virgo Cluster Survey. IV. Data Reduction Procedures for Surface Brightness Fluctuation Measurements with the Advanced Camera for Surveys [PDF]

open access: bronze, 2005
The Advanced Camera for Surveys (ACS) Virgo Cluster Survey is a large program to image 100 early-type Virgo galaxies using the F475W and F850LP bandpasses of the Wide Field Channel of the ACS instrument on the Hubble Space Telescope (HST). The scientific
S. Mei   +9 more
openalex   +3 more sources

Distance Measurements and Stellar Population Properties via Surface Brightness Fluctuations [PDF]

open access: yesPublications of the Astronomical Society of Australia, 2012
Surface Brightness Fluctuations (SBFs) are one of the most powerful techniques to measure the distance and to constrain the unresolved stellar content of extragalactic systems.
Fritz, Alexander
core   +4 more sources

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

The Surface Brightness Fluctuation Survey of Galaxy Distances. II. Local and Large‐Scale Flows [PDF]

open access: green, 2000
We present results from the Surface Brightness Fluctuation (SBF) Survey for the distances to 300 early-type galaxies, of which approximately half are ellipticals.
J. Tonry   +3 more
openalex   +3 more sources

Studying the ICM in clusters of galaxies via surface brightness fluctuations of the cosmic X-ray background

open access: green, 2017
We study the surface brightness fluctuations of the cosmic X-ray background (CXB) using Chandra data of XBOOTES. After masking out resolved sources we compute the power spectrum of fluctuations of the unresolved CXB for angular scales from ~2 arcsec to ...
Gilfanov, Marat   +3 more
core   +2 more sources

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