3 citations · 3 across the 5 of their papers we have counts for
11 papers · 1 filter
Cluster Evolution Since z~1
R. Demarco, J. P. Blakeslee, H. C. Ford +8
We have used the Advanced Camera for Surveys (ACS) on the HST to obtain optical imaging of a sample of 8 galaxy clusters in the redshift range 0.8 < z < 1.3. The ACS data provides…
The ACS Virgo Cluster Survey V: SBF Calibration for Giant and Dwarf Early-type Galaxies
Simona Mei, John P. Blakeslee, John L. Tonry +7
As part of the Advanced Camera for Survey (ACS) Virgo Cluster Survey, we have measured Surface Brightness Fluctuations (SBF) in a sample of 100 early-type Virgo galaxies. Distances…
The Extragalactic Distance Scale
Joseph B. Jensen, John L. Tonry, John P. Blakeslee
Significant progress has been made during the last 10 years toward resolving the debate over the expansion rate of the Universe. The current value of the Hubble parameter, Ho, is n…
An Automatic Image Reduction Pipeline for the Advanced Camera for Surveys
J. P. Blakeslee, K. R. Anderson, G. R. Meurer +2
We have written an automatic image processing pipeline for the Advanced Camera for Surveys (ACS) Guaranteed Time Observation (GTO) program. The pipeline, known as Apsis, supports t…
Calibration of Geometric Distortion in the ACS Detectors
G. R. Meurer, D. Lindler, J. P. Blakeslee +9
The off-axis location of the Advanced Camera for Surveys (ACS) is the chief (but not sole) cause of strong geometric distortion in all detectors: the Wide Field Camera (WFC), High…
Testing the Supernova, Cepheid, and Early-type Galaxy Distance Scales
John P. Blakeslee
I summarize recent work comparing relative distances measured to individual galaxies with independent methods. The comparisons include: ground-based surface brightness fluctuation…