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97 papers · 2 filters
Completeness of USNO-B for High Proper-Motion Stars
Andrew Gould
I test the completeness of USNO-B detections of high proper-motion (mu>0.18"/yr) stars and the accuracy of its measurements by comparing them to the revised NLTT (rNLTT) catalog of…
Circumnuclear Dust in Nearby Active and Inactive Galaxies. I. Data
Paul Martini, Michael W. Regan, John S. Mulchaey +1
The detailed morphology of the interstellar medium (ISM) in the central kiloparsec of galaxies is controlled by pressure and gravitation. The combination of these forces shapes bot…
Lyman Alpha Absorber Correlations and the Bias of the Lyman Alpha Forest
Romeel Davé, Neal Katz, David H. Weinberg
Lyman alpha absorber correlations contain information about the underlying density distribution associated with a particular class of absorbers. As such, they provide an opportunit…
Circumnuclear Dust in Nearby Active and Inactive Galaxies. II. Bars, Nuclear Spirals, and the Fueling of Active Galactic Nuclei
Paul Martini, Michael W. Regan, John S. Mulchaey +1
(Abridged) We present a detailed study of the relation between circumnuclear dust morphology, host galaxy properties, and nuclear activity in nearby galaxies. We use our sample of…
An Intrinsic Baldwin Effect in the H-beta Broad Emission Line in the Spectrum of NGC 5548
Karoline M. Gilbert, Bradley M. Peterson
We investigate the possibility of an intrinsic Baldwin Effect (i.e.,nonlinear emission-line response to continuum variations) in the broad H-beta emission line of the active galaxy…
Galaxy Clustering and Galaxy Bias in a Lambda-CDM Universe
David H. Weinberg, Romeel Dav'e, Neal Katz +1
We investigate galaxy clustering and galaxy-mass correlations in the LCDM cosmological model using a large volume SPH simulation. For the most part, the predicted biases between ga…