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A new spectrograph has been commissioned for use on the Multiple Mirror Telescope. The instrument is a low-to-moderate-resolution CCD channel for the two-beam MMT spectrograph which has until nowExpand
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The Hubble Space Telescope Northern-Hemisphere Grid of Stellar Polarimetric Standards
Results are presented from a comprehensive program of optical polarimetry of strongly polarized and null-polarization standard stars. Potential sources of systematic error either instrumental inExpand
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Cataclysmic variables from the Sloan Digital Sky Survey. II. The second year
The first full year of operation following the commissioning year of the Sloan Digital Sky Survey (SDSS) has revealed a wide variety of newly discovered cataclysmic variables (CVs). We show the SDSSExpand
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An Optical Polarization Survey of the Palomar-Green Bright Quasar Sample
Les observations polarimetriques optiques d'un ensemble, complet jusqu'a la magnitude B = 16.2, de 114 quasars du Palomar-Green Bright Quasar Survey sont presentees. La distribution et la variabiliteExpand
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Probing the Inner Jet of the Quasar PKS 1510?089 with Multi-Waveband Monitoring During Strong Gamma-Ray Activity
We present results from monitoring the multi-waveband flux, linear polarization, and parsec-scale structure of the quasar PKS 1510 – 089, concentrating on eight major γ-ray flares that occurredExpand
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A Catalog of Spectroscopically Identified White Dwarf Stars in the First Data Release of the Sloan Digital Sky Survey
We present the full spectroscopic white dwarf and hot subdwarf sample from the Sloan Digital Sky Survey (SDSS) first data release, DR1. We find 2551 white dwarf stars of various types, 240 hotExpand
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Spectropolarimetric Survey of Hydrogen‐rich White Dwarf Stars
We have conducted a survey of 61 southern white dwarfs searching for magnetic fields using Zeeman spectropolarimetry. Our objective is to obtain a magnetic field distribution for these objects and,Expand
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New low accretion rate magnetic binary systems and their significance for the evolution of cataclysmic variables
Discoveries of two new white dwarf plus M star binaries with striking optical cyclotron emission features from the Sloan Digital Sky Survey (SDSS) brings to six the total number of X-ray-faint,Expand
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We identify a sample of 74 high-redshift quasars ( z> 3) with weak emission lines from the Fifth Data Release of the Sloan Digital Sky Survey and present infrared, optical, and radio observations ofExpand
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Coordinated Fermi/Optical Monitoring of Blazars and the Great 2009 September Gamma-ray Flare of 3C 454.3
We describe the optical spectropolarimetric monitoring program at Steward Observatory centered around gamma-ray-bright blazars and the LAT Monitored Source List planned for Fermi Cycles 2-4. TheExpand
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