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astro-ph2008★ 140 cited
Six White Dwarfs with Circumstellar Silicates
M. Jura, J. Farihi, B. Zuckerman
Spitzer Space Telescope spectra reveal 10 micron silicate emission from circumstellar dust orbiting six externally-polluted white dwarfs. Micron-size glasses with an olivine stoich…
astro-ph2008★ 91 cited
Spitzer IRAC Observations of White Dwarfs. II. Massive Planetary and Cold Brown Dwarf Companions to Young and Old Degenerates
J. Farihi, E. E. Becklin, B. Zuckerman
This paper presents a sensitive and comprehensive IRAC 3-8 m photometric survey of white dwarfs for companions in the planetary mass regime with temperatures cooler than the kno…
astro-ph2008★ 37 cited
Near-Infrared Constraints on the Presence of Warm Dust at Metal-Rich, Helium Atmosphere White Dwarfs
Mukremin Kilic, J. Farihi, Atsuko Nitta +1
Here, we present near-infrared spectroscopic observations of 15 helium atmosphere, metal-rich white dwarfs obtained at the NASA Infrared Telescope Facility. While a connection has…