190 citations · 287 across the 5 of their papers we have counts for
4 papers · 1 filter
The Crab Nebula's Composition and Precursor Star Mass
Gordon M. MacAlpine, Timothy J. Satterfield
We present results of new photoionization calculations for investigating gaseous regions that represent potentially expected stages of nuclear processing in the Crab Nebula superno…
A Spectroscopic Study of Nuclear Processing and Production of Anomalously Strong Lines in the Crab Nebula
G. M. MacAlpine, T. C. Ecklund, W. R. Lester +2
We present and discuss correlations for optical and near-infrared (5500-10030 angstroms) line intensity measurements at many positions in the Crab Nebula. These correlations sugges…
Possible High-Redshift, Low-Luminosity AGN Activity in the Hubble Deep Field
R. Michael Jarvis, Gordon M. MacAlpine
In the Hubble Deep Field (HDF), twelve candidate sources of high-redshift (z > 3.5) AGN activity have been identified. The color selection criteria were established by passing spec…
Multiwavelength observations of short time-scale variability in NGC 4151. IV. Analysis of multiwavelength continuum variability
R. A. Edelson et al
This paper combines data from the three preceding papers in order to analyze the multi-waveband variability and spectral energy distribution of the Seyfert~1 galaxy NGC~4151 during…