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Steps Toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XVI. A Thirteen-Year Study of Spectral Variability in NGC 5548
B. M. Peterson, the International AGN Watch
We present the final installment of an intensive 13-year study of variations of the optical continuum and broad H-beta emission line in the Seyfert 1 galaxy NGC 5548. The data base…
Narrow-line Seyfert 1 Galaxies from the Sloan Digital Sky Survey Early Data Release
Rik J. Williams, Richard W. Pogge, Smita Mathur
We present a sample of 150 narrow-line Seyfert 1s (NLS1s) found within the Sloan Digital Sky Survey Early Data Release (EDR), only two of which were previously identified as such.…
Morphological Classification of the OSU Bright Spiral Galaxy Survey
L. F. Whyte, R. G. Abraham, M. R. Merrifield +3
To quantify the distribution of bar shapes in spiral galaxies, we have analysed 113 H-band and 89 B-band galaxy images from the Ohio State University Bright Spiral Galaxy Survey. P…
Near-IR and Optical Morphology of Spiral Galaxies
Paul B. Eskridge, Jay A. Frogel, Richard W. Pogge +12
We announce the initial release of data from the Ohio State University Bright Spiral Galaxy Survey, a BVRJHK imaging survey of a well-defined sample of 205 bright, nearby spiral ga…
FUSE Observations of the Narrow-Line Seyfert 1 Galaxy Arakelian 564
P. Romano, S. Mathur, R. W. Pogge +2
We present a 63 ks FUSE observation of the Narrow-Line Seyfert 1 galaxy Arakelian 564. The spectrum is dominated by the strong emission in the O VI λ\lambda1032, 1038 resonance dou…
Arm Structure in Anemic Spiral Galaxies
Debra Meloy Elmegreen, Bruce G. Elmegreen, Jay A. Frogel +4
Anemic galaxies have less prominent star formation than normal galaxies of the same Hubble type. Previous studies showed they are deficient in total atomic hydrogen but not in mole…
A Short, Non-Planetary, Microlensing Anomaly: Observations and Lightcurve Analysis of MACHO 99-BLG-47
M. D. Albrow, J. An, J. -P. Beaulieu +17
We analyze PLANET and MACHO observations of MACHO 99-BLG-47, the first nearly-normal microlensing event for which high signal-to-noise-ratio data reveal a well-covered, short-durat…
The Visibility of Galactic Bars and Spiral Structure At High Redshifts
Sidney van den Bergh, Roberto G. Abraham, Laura F. Whyte +4
We investigate the visibility of galactic bars and spiral structure in the distant Universe by artificially redshifting 101 B-band CCD images of local spiral galaxies from the Ohio…
Hubble Space Telescope Imaging of the Circumnuclear Environments of the CfA Seyfert Galaxies: Nuclear Spirals and Fueling
Richard W. Pogge, Paul Martini
We present archival Hubble Space Telescope images of the nuclear regions of 43 of the 46 Seyfert galaxies found in the volume-limited, spectroscopically-complete CfA Redshift Surve…