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Now showing items 241-244 of 244
Identifying Gamma‐Ray Burst Remnants in Nearby Galaxies
(American Astronomical Society, 2000)
We study the spectral signatures arising from cooling and recombination of an interstellar medium whose equilibrium state has been altered over similar to 100 pc by the radiation of a gamma-ray burst (GRB) and its afterglow. ...
Young Stellar Populations around SN 1987A
(American Astronomical Society, 2000)
We present the first results of a study of the stellar population in a region of 30 pc radius around SN 1987A, based on an ana ysis of multiband Hubble Space Telescope (HST) WFPC2 images. The effective temperature, radius ...
High‐Redshift Galaxies: Their Predicted Size and Surface Brightness Distributions and Their Gravitational Lensing Probability
(American Astronomical Society, 2000)
Direct observations of the first generation of luminous objects will likely become feasible over the next decade. The advent of the Next Generation Space Telescope (NGST) will allow imaging of numerous galaxies and ...
Simulating the Effects of Intergalactic Gray Dust
(American Astronomical Society, 2000)
Using a high-resolution cosmological hydrodynamic simulation we present a method to constrain extinction due to intergalactic gray dust based on the observed magnitudes of distant Type Ia supernovae. We apply several simple ...