Results 1 to 10 of about 7,284 (264)
A Primordial Origin for the Gas-rich Debris Disks around Intermediate-mass Stars [PDF]
The Astrophysical Journal Letters, 2023 While most debris disks consist of dust with little or no gas, a fraction have significant amounts of gas detected via emission lines of CO, ionized carbon, and/or atomic oxygen.
Riouhei Nakatani +6 more
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A JWST MIRI MRS View of the η Tel Debris Disk and Its Brown Dwarf Companion
The Astrophysical JournalWe report JWST Mid-Infrared Instrument (MIRI) Medium Resolution Spectrograph (MRS) observations of the β Pic moving-group member, η Tel A, along with its brown dwarf binary companion, η Tel B.
Yiwei Chai +14 more
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The Astronomical JournalThe presence of infrared excesses around stars directly correlates with spatially resolved imaging detections of circumstellar disks at both millimeter and optical/near-infrared wavelengths.
Justin Hom +10 more
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Frequencies of Warm Debris Disks Based on Point Source Catalogs of Spitzer, WISE, and Gaia
The Astronomical JournalMore than a thousand warm debris disks have been detected as infrared excess at mid-infrared wavelengths, and their frequencies have been obtained for various spectral types of stars.
Toshiyuki Mizuki +3 more
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A Constraint on the Amount of Hydrogen from the CO Chemistry in Debris Disks
The Astrophysical Journal, 2023 The faint CO gases in debris disks are easily dissolved into C by UV irradiation, while CO can be reformed via reactions with hydrogen. The abundance ratio of C/CO could thus be a probe of the amount of hydrogen in the debris disks.
Kazunari Iwasaki +3 more
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Primordial or Secondary? Testing Models of Debris Disk Gas with ALMA
The Astrophysical Journal, 2023 The origin and evolution of gas in debris disks are still not well understood. Secondary gas production from cometary material or a primordial origin have been proposed.
Gianni Cataldi +15 more
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The Apparent Absence of Forward Scattering in the HD 53143 Debris Disk
The Astrophysical Journal, 2023 HD 53143 is a mature Sun-like star and host to a broad disk of dusty debris, including a cold outer ring of planetesimals near 90 au. Unlike most other inclined debris disks imaged at visible wavelengths, the cold disk around HD 53143 appears as ...
Christopher C. Stark +7 more
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Debris disks around stars in the NIKA2 era [PDF]
EPJ Web of Conferences, 2020 The new NIKA2 camera at the IRAM 30m radiotelescope was used to observe three known debris disks in order to constrain the SED of their dust emission in the millimeter wavelength domain.
Lestrade J.-F. +45 more
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Long-term Evolution of Warps in Debris Disks—Application to the Gyr-old System HD 202628
The Astrophysical Journal, 2023 We present the results of N -body simulations meant to reproduce the long-term effects of mutually inclined exoplanets on debris disks, using the HD 202628 system as a proxy.
Madison T. Brady +3 more
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Giant Impacts and Debris Disk Morphology
The Astrophysical Journal, 2023 Certain debris disks have nonaxisymmetric shapes in scattered light which are unexplained. The appearance of a disk depends on how its constituent Keplerian ellipses are arranged.
Joshua W. Jones +4 more
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