Results 41 to 50 of about 31,620 (294)

Planetesimal/Debris Disks

open access: yes, 2023
Review chapter of the book "Planetary Systems Now", to be published by World ...
openaire   +2 more sources

Transient dust in warm debris disks - Detection of Fe-rich olivine grains

open access: yes, 2012
(Abridged) Debris disks trace remnant reservoirs of leftover planetesimals in planetary systems. A handful of "warm" debris disks have been discovered in the last years, where emission in excess starts in the mid-infrared.
A. Juhász   +99 more
core   +1 more source

The Edgeworth-Kuiper debris disk [PDF]

open access: yesAstronomy and Astrophysics, 2010
18 pages, 14 figures, accepted for publication in A& ...
Vitense, Christian   +2 more
openaire   +2 more sources

Are debris disks self-stirred? [PDF]

open access: yes, 2010
This paper considers the evidence that debris disks are self-stirred by the formation of Plutos. A model for the dust produced during self-stirring is applied to statistics for A stars. As there is no significant difference between excesses of A-stars
Alexander   +77 more
core   +2 more sources

DUSTY DISKS AROUND WHITE DWARFS. I. ORIGIN OF DEBRIS DISKS [PDF]

open access: yesThe Astrophysical Journal, 2010
38 pages, 7 figures, single column, accepted by ...
Dong, Ruobing   +3 more
openaire   +2 more sources

A Dusty Disk Around WD1150-153: Explaining the Metals in White Dwarfs by Accretion from the Interstellar Medium versus Debris Disks [PDF]

open access: yes, 2007
We report the discovery of excess K-band radiation from a metal-rich DAV white dwarf star, WD1150-153. Our near infrared spectroscopic observations show that the excess radiation cannot be explained by a (sub)stellar companion, and is likely to be caused
Bradley P. A.   +5 more
core   +4 more sources

Decay of Planetary Debris Disks [PDF]

open access: yesThe Astrophysical Journal, 2005
We report new Spitzer 24 m photometry of 76 main-sequence A-type stars. We combine these results with previously reportedSpitzer24 m data and 24 and 25 m photometry from theInfrared Space Observatoryand the InfraredAstronomySatellite.Theresultisasampleof266starswithmasscloseto2.5M ,alldetectedtoatleastthe 7 level relative to their ...
G. H. Rieke   +11 more
openaire   +1 more source

Planetary Collisions outside the Solar System: Time Domain Characterization of Extreme Debris Disks [PDF]

open access: yes, 2015
Luminous debris disks of warm dust in the terrestrial planet zones around solar-like stars are recently found to vary, indicative of ongoing large-scale collisions of rocky objects.
Cook, Michael   +11 more
core   +3 more sources

Using 3.4 μm Variability toward White Dwarfs as a Signpost of Remnant Planetary Systems

open access: yesThe Astrophysical Journal
Roughly 2% of white dwarfs harbor planetary debris disks detectable via infrared excesses, but only a few percent of these disks show a gaseous component, distinguished by their double-peaked emission at the near-infrared calcium triplet.
Joseph A. Guidry   +5 more
doaj   +1 more source

Debris disks as signposts of terrestrial planet formation. II Dependence of exoplanet architectures on giant planet and disk properties [PDF]

open access: yes, 2011
We present models for the formation of terrestrial planets, and the collisional evolution of debris disks, in planetary systems that contain multiple unstable gas giants.
A. A. West   +132 more
core   +8 more sources

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