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Multiwavelength analyses of a small sample of nearby spiral galaxies: The radio and X-ray connection.
(2006)
Included is a preliminary report on radio analyses of M101 and NGC 3184. The deep radio observations of M101 yield 28 compact radio sources. A shorter set of observations for NGC 3184 yield the detection of 10 radio sources. ...
The Sobolev approximation in a spherical shell expanding with constant radial velocity.
(2000)
A simple model of line radiative transfer in a circumstellar shell surrounding a supernova is presented. An examination of optical depth in an atmosphere with power-law expansion and a single source of opacity highlights ...
Determining the distance of SN 1987A with SEAM.
(2001)
Supernovae count among the most luminous phenomena in the universe, and as such they have been sought after to serve as cosmological distance indicators. Type Ia supernovae are currently the most commonly used indicators. ...
Co-Spatial UV-Optical HST/STIS Spectra of Seven Galactic Planetary Nebulae: Nebular and Stellar Properties
(2017)
This project had two main goals: (1) to investigate to what extent planetary nebulae (PNe) are chemically homogeneous; and (2) to provide physical constraints on the central star properties of each PN. The first goal was ...
An Ultraviolet Survey of the DA White Dwarf Population of the Galaxy
(2023-08-04)
DA white dwarfs are the most common type of white dwarf in our Galaxy. Hence, it is important to study the DA white dwarf population as thoroughly as possible. In this dissertation, I present our work using the Galaxy ...
Heavenly metal: A study of neutron-capture element abundances in metal-poor galactic halo stars.
(1998)
New abundances for neutron-capture elements in a large sample of metal-poor giants from the Bond survey in addition to 3 well known individual cases, are presented. The spectra for the Bond Giants were acquired with the ...
A High Cadence Study of Stellar Variability: Searching for Habitable Planetary Companions Orbiting White Dwarfs with the DECam Minute Cadence Survey
(2019-07)
One outstanding question in astronomy is what happens to planetary systems as their host star evolves. Though indirect evidence such as metal polluted white dwarf atmospheres and debris disks around white dwarfs, and recent ...
"'Tis something, nothing", a search for radio supernovae.
(1998)
We report VLA radio observations of 29 SNe with ages ranging from 10 days to about 90 years past explosion. Included are detections of known radio SNe 1950B, 1957D, 1970G, 1983N, the suspected radio SN 1923A, and the ...