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A High Precision, Optical Polarimeter to Measure Inclinations of High Mass X-Ray Binaries
Sloane J. Wiktorowicz, Keith Matthews
We present commissioning data for the POLISH instrument obtained on the Hale 5-m telescope. The goal of this high precision polarimeter is to constrain orbital inclination of high…
Morphologies of High Redshift, Dust Obscured Galaxies from Keck Laser Guide Star Adaptive Optics
J. Melbourne, V. Desai, Lee Armus +7
Spitzer MIPS images in the Bootes field of the NOAO Deep Wide-Field Survey have revealed a class of extremely dust obscured galaxy (DOG) at z~2. The DOGs are defined by very red op…
Lens Galaxy Properties of SBS1520+530: Insights from Keck Spectroscopy and AO Imaging
M. W. Auger, C. D. Fassnacht, K. C. Wong +3
We report on an investigation of the SBS 1520+530 gravitational lens system and its environment using archival HST imaging, Keck spectroscopic data, and Keck adaptive-optics imagin…
The proper motion of the Arches cluster with Keck Laser-Guide Star Adaptive Optics
Andrea Stolte, Andrea M. Ghez, Mark Morris +3
We present the first measurement of the proper motion of the young, compact Arches cluster near the Galactic center from near-infrared adaptive optics (AO) data taken with the rece…
High resolution imaging of the anomalous flux-ratio gravitational lens system CLASS B2045+265: Dark or luminous satellites?
J. P. McKean, L. V. E. Koopmans, C. E. Flack +6
The existence of flux-ratio anomalies between fold and cusp images in galaxy-scale strong-lens systems has led to an interpretation based on the presence of a high mass-fraction of…
Sub-Arcsecond Mid-Infrared Observations of NGC 6240: Limitations of AGN-Starburst Power Diagnostics
E. Egami, G. Neugebauer, B. T. Soifer +3
In order to examine the relative importance of powerful starbursts and Compton-thick AGNs in NGC 6240, we have obtained mid-infrared images and low-resolution spectra of the galaxy…