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Circumstellar debris and pollution at white dwarf stars
J Farihi - New Astronomy Reviews, 2016 - Elsevier
Circumstellar disks of planetary debris are now known or suspected to closely orbit
hundreds of white dwarf stars. To date, both data and theory support disks that are entirely …
hundreds of white dwarf stars. To date, both data and theory support disks that are entirely …
Post-main-sequence planetary system evolution
The fates of planetary systems provide unassailable insights into their formation and
represent rich cross-disciplinary dynamical laboratories. Mounting observations of post-main …
represent rich cross-disciplinary dynamical laboratories. Mounting observations of post-main …
A planetesimal orbiting within the debris disc around a white dwarf star
Many white dwarf stars show signs of having accreted smaller bodies, implying that they
may host planetary systems. A small number of these systems contain gaseous debris discs …
may host planetary systems. A small number of these systems contain gaseous debris discs …
A disintegrating minor planet transiting a white dwarf
Most stars become white dwarfs after they have exhausted their nuclear fuel (the Sun will be
one such). Between one-quarter and one-half of white dwarfs have elements heavier than …
one such). Between one-quarter and one-half of white dwarfs have elements heavier than …
In defense of the black box
The science fiction writer Douglas Adams imagined the greatest computer ever built, Deep
Thought, programmed to answer the deepest question ever asked: the Great Question of …
Thought, programmed to answer the deepest question ever asked: the Great Question of …
OSIRIS-APEX: an OSIRIS-REx extended mission to asteroid apophis
Abstract The Origins, Spectral Interpretation, Resource Identification, and Security–Regolith
Explorer (OSIRIS-REx) spacecraft mission characterized and collected a sample from …
Explorer (OSIRIS-REx) spacecraft mission characterized and collected a sample from …
Cool DZ white dwarfs II: compositions and evolution of old remnant planetary systems
In a previous study, we analysed the spectra of 230 cool (T eff< 9000 K) white dwarfs
exhibiting strong metal contamination, measuring abundances for Ca, Mg, Fe and in some …
exhibiting strong metal contamination, measuring abundances for Ca, Mg, Fe and in some …
Seven white dwarfs with circumstellar gas discs I: white dwarf parameters and accreted planetary abundances
Observations of planetary material polluting the atmospheres of white dwarfs are an
important probe of the bulk composition of exoplanetary material. Medium-and high …
important probe of the bulk composition of exoplanetary material. Medium-and high …
A white dwarf with transiting circumstellar material far outside the Roche limit
We report the discovery of a white dwarf exhibiting deep, irregularly shaped transits,
indicative of circumstellar planetary debris. Using Zwicky Transient Facility DR2 photometry …
indicative of circumstellar planetary debris. Using Zwicky Transient Facility DR2 photometry …
Polluted white dwarfs: constraints on the origin and geology of exoplanetary material
White dwarfs that have accreted rocky planetary bodies provide unique insights regarding
the bulk composition of exoplanetary material. The analysis presented here uses observed …
the bulk composition of exoplanetary material. The analysis presented here uses observed …