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Chandra Observations of A2670 and A2107: A Comet Galaxy and cDs with Large Peculiar Velocities
Yutaka Fujita, Craig L. Sarazin, Gregory R. Sivakoff
We present an analysis of Chandra observations of the galaxy clusters A2670 and A2107. Their cD galaxies have large peculiar velocities (>200km/s) and thus the clusters appear to b…
The ACS Virgo Cluster Survey X. Half-light Radii of Globular Clusters in Early-Type Galaxies: Environmental Dependencies and a Standard Ruler for Distance Estimation
Andres Jordan, Patrick Cote, John P. Blakeslee +10
We have measured half-light radii, r_h, for globular clusters (GCs) belonging to the 100 early-type galaxies observed in the ACS Virgo Cluster Survey and the elliptical galaxy NGC…
The Galaxy Distribution Function from the 2MASS Survey
Gregory R. Sivakoff, William C. Saslaw
We determine the spatial distribution function of galaxies from a wide range of samples in the 2MASS survey. The results agree very well with the form of the distribution predicted…
Luminous X-ray Flares from Low Mass X-ray Binary Candidates in the Early-Type Galaxy NGC 4697
Gregory R. Sivakoff, Craig L. Sarazin, Andres Jordan
We report results of the first search specifically targeting short-timescale X-ray flares from low-mass X-ray binaries in an early-type galaxy. A new method for flare detection is…