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Optical Spectroscopy of Type Ia Supernovae
T. Matheson, R. P. Kirshner, P. Challis +19
We present 432 low-dispersion optical spectra of 32 Type Ia supernovae (SNe Ia) that also have well-calibrated light curves. The coverage ranges from 6 epochs to 36 epochs of spect…
Strongly Variable z=1.48 FeII and MgII Absorption in the Spectra of z=4.05 GRB 060206
H. Hao, K. Z. Stanek, A. Dobrzycki +9
We report on the discovery of strongly variable FeII and MgII absorption lines seen at z=1.48 in the spectra of the z=4.05 GRB 060206 obtained between 4.13 to 7.63 hours (observer…
Constraints for the accretion disk evaporation rate in AGN from the existence of the Broad Line Region
B. Czerny, A. Rozanska, J. Kuraszkiewicz
We analyze the consequences of the hypothesis that the formation of the Broad Line Region is intrinsically connected with the existence of the cold accretion disk. We assume that t…
Emission Line Properties of AGN from a post-COSTAR FOS HST Spectral Atlas
J. K. Kuraszkiewicz, P. J. Green, D. M. Crenshaw +4
This paper joins a series compiling consistent emission line measurements of large AGN spectral databases, useful for reliable statistical studies of emission line properties. It i…
Probing the Central Engine of the Narrow-Line Seyfert 1 Galaxies
Agnieszka Janiuk, Joanna Kuraszkiewicz, Bozena Czerny
The central engine of the the Narrow Line Seyfert 1 galaxies is being probed. We use the ASCA and RXTE data to model the X-ray primary continuum as well as the reflected component…
Infrared Properties of High Redshift and X-ray Selected AGN Samples
Belinda J. Wilkes, Eric J. Hooper, Kim K. McLeod +7
The NASA/ISO Key Project on active galactic nuclei (AGN) seeks to better understand the broad-band spectral energy distributions (SEDs) of these sources from radio to X-rays, with…