Results 1 to 10 of about 5,767 (118)

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, Hiroshi Kobayashi, Aya E. Higuchi, Yuri Aikawa   +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, Yuri Aikawa, Kazunari Iwasaki, Sebastian Marino, Alexis Brandeker, Antonio Hales, Thomas Henning, Aya E. Higuchi, A. Meredith Hughes, Markus Janson, Quentin Kral, Luca Matrà, Attila Moór, Göran Olofsson, Seth Redfield, Aki Roberge   +15 more
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A Primordial Origin for the Gas-rich Debris Disks around Intermediate-mass Stars

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, Neal J. Turner, Yasuhiro Hasegawa, Gianni Cataldi, Yuri Aikawa, Sebastián Marino, Hiroshi Kobayashi   +6 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, Virginie Faramaz-Gorka, Geoffrey Bryden, Steve Ertel   +3 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., Augereau J.-C., Booth M., Adam R., Ade P., André P., Andrianasolo A., Aussel H., Beelen A., Benoît A., Bideaud A., Bourrion O., Calvo M., Catalano A., Comis B., De Petris M., Désert F.-X., Doyle S., Driessen E.F.C., Gomez A., Goupy J., Holland W., Kéruzoré F., Kramer C., Ladjelate B., Lagache G., Leclercq S., Lefèvre C., Macías-Pérez J.F., Mauskopf P., Mayet F., Monfardini A., Perotto L., Pisano G., Ponthieu N., Revéret V., Ritacco A., Romero C., Roussel H., Ruppin F., Schuster K., Shu S., Sievers A., Thébault P., Tucker C., Zylka R.   +45 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, Bin Ren, Meredith A. MacGregor, Ward S. Howard, Spencer A. Hurt, Alycia J. Weinberger, Glenn Schneider, Elodie Choquet   +7 more
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Using 3.4 μm Variability toward White Dwarfs as a Signpost of Remnant Planetary Systems

The 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, J. J. Hermes, Kishalay De, Lou Baya Ould Rouis, Brison B. Ewing, B. C. Kaiser   +5 more
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The ALMA survey to Resolve exoKuiper belt Substructures (ARKS)

Astronomy & Astrophysics
Context. Debris disks – collisionally sustained belts of dust and sometimes gas around main sequence stars – are remnants of planet formation processes and are found in systems ≳10 Myr old.
Zawadzki B., Fehr A., Hughes A. M., Mansell E., Kittling J., Han Y., Hou C., Pan M., Milli J., Olofsson J., Pearce T., Sefilian A. A., Nurmohamed A., Lee J., Mpofu Y., Bonduelle M., Booth M., Brennan A., del Burgo C., Carpenter J. M., Cataldi G., Chiang E., Ertel S., Henning Th., Jankovic M. R., Kennedy G. M., Kóspál Á., Krivov A. V., Lovell J. B., Luppe P., MacGregor M. A., Mac Manamon S., Marino S., Marshall J. P., Matrà L., Moór A., Pérez S., Weber P., Wilner D. J., Wyatt M. C.   +39 more
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Sequencing Silicates in the Spitzer Infrared Spectrograph Debris Disk Catalog. I. Methodology for Unsupervised Clustering

The Astrophysical Journal Supplement Series
Debris disks, which consist of dust, planetesimals, planets, and gas, offer a unique window into the mineralogical composition of their parent bodies, especially during the critical phase of terrestrial planet formation spanning 10 yr to a few hundred ...
Cicero X. Lu, Tushar Mittal, Christine H. Chen, Alexis Y. Li, Kadin Worthen, B. A. Sargent, Carey M. Lisse, G. C. Sloan, Dean C. Hines, Dan M. Watson, Isabel Rebollido, Bin B. Ren, Joel D. Green   +12 more
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How hard is dust in debris disks?

Astronomy & Astrophysics
The observational appearance of debris disks is largely controlled by collisional grinding of their dust grains. However, the mechanical strength of dust at sizes in the micrometer to millimeter range is poorly known.
Stein Tobias, Krivov Alexander V., Löhne Torsten   +2 more
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