Results 51 to 60 of about 135,506 (273)
EFFECTS OF α-ELEMENT ENHANCEMENT AND THE THERMALLY PULSING-ASYMPTOTIC GIANT BRANCH ON SURFACE BRIGHTNESS FLUCTUATION MAGNITUDES AND BROADBAND COLORS [PDF]
We investigate the effects of α-element enhancement and the thermally pulsing-asymptotic giant branch (TP-AGB) stars on the surface brightness fluctuation (SBF) magnitudes and broadband colors of simple stellar populations and compare to the empirical ...
Hyun-Chul Lee, G. Worthey, J. Blakeslee
semanticscholar +1 more source
Surface Brightness Fluctuations: A Case for Extremely Large Telescopes [PDF]
3 pages, 2 figures, to appear in the proceedings of the ESO Workshop "Science with Adaptive Optics", eds. W. Brandner & M.
Stefan Hippler+3 more
openaire +4 more sources
The surface brightness fluctuations and globular cluster populations of M87 and its companions [PDF]
Using the surface brightness fluctuations in HST WFPC-2 images, we determine that M87, NGC 4486B, and NGC 4478 are all at a distance of ~16 Mpc, while NGC 4476 lies in the background at ~21 Mpc. We also examine the globular clusters of M87 using archived HST fields.
Eric H. Neilsen+2 more
openaire +6 more sources
Based on FY-4A geostationary satellite multi-channel data, mesoscale convective systems (MCSs) during three downhill processes of convection strengthening (1 July 2021, 12 June 2022 and 4 August 2022) in Beijing are identified by temperature threshold ...
Yang Yiya+5 more
doaj +1 more source
Surface brightness fluctuation distances for dwarf elliptical galaxies in the Fornax cluster [PDF]
We have obtained deep B and R-band CCD images of eight dwarf elliptical (dE) galaxies in the Fornax cluster using the FORS1 instrument at the VLT in service mode under excellent atmospheric conditions.
H. Jerjen+4 more
semanticscholar +1 more source
TGF‐β has a complex role in cancer, exhibiting both tumor‐suppressive and tumor‐promoting properties. Using a series of differentiated tumoroids, derived from different stages and mutational background of colorectal cancer patients, we replicate this duality of TGF‐β in vitro. Notably, the atypical but highly aggressive KRASQ22K mutation rendered early‐
Theresia Mair+17 more
wiley +1 more source
The Distance to the Coma Cluster from Surface Brightness Fluctuations
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-based observations of the standard E1 galaxy NGC 3379 in the Leo-I group.
Guy Worthey+3 more
openaire +3 more sources
X-ray surface brightness and gas density fluctuations in the Coma cluster [PDF]
published in ...
Churazov, E+8 more
openaire +3 more sources
This article advocates integrating temporal dynamics into cancer research. Rather than relying on static snapshots, researchers should increasingly consider adopting dynamic methods—such as live imaging, temporal omics, and liquid biopsies—to track how tumors evolve over time.
Gautier Follain+3 more
wiley +1 more source
The Effect Of Alpha-Element Enhancement On Surface Brightness Fluctuation Magnitudes And Broad-Band Colors [PDF]
We present the effects due to alpha-element enhancement on surface brightness fluctuation magnitudes and broad-band colors in order to investigate the calibration zero-point.
Hyun-Chul Lee, G. Worthey, J. Blakeslee
semanticscholar +1 more source