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We present Herschel far-infrared and submillimeter maps of the debris disk associated with the HR 8799 planetary system. We resolve the outer disk emission at 70, 100, 160 and 250 um and detect the disk at 350 and 500 um. A smooth model…

We have obtained a full suite of Spitzer observations to characterize the debris disk around HR 8799 and to explore how its properties are related to the recently discovered set of three massive planets orbiting the star. We distinguish…

Earth and Planetary Astrophysics · Physics 2014-11-20 K. Y. L. Su , G. H. Rieke , K. R. Stapelfeldt , R. Malhotra , G. Bryden , P. S. Smith , K. A. Misselt , A. Moro-Martin , J. P. Williams

Warm debris disks are a sub-sample of the large population of debris disks, and display excess emission in the mid-IR. Around solar-type stars, very few objects show emission features in mid-IR spectroscopic observations, that are…

The exoplanetary system of HR 8799 is one of the rare systems in which multiple planets have been directly imaged. Its architecture is strikingly similar to that of the Solar System, with the four imaged giant planets surrounding a warm…

HR~8799 is a young F0-type star with four directly imaged giant planets and two debris belts, one located exterior and another one interior to the region occupied by the planetary orbits. Having an architecture similar to that of our Solar…

Earth and Planetary Astrophysics · Physics 2018-11-26 Fabian Geiler , Alexander Krivov , Mark Booth , Torsten Löhne

In many ways, the HR 8799 planetary system strongly resembles our own. It features four giant planets and two debris belts, analogues to the Asteroid and Edgeworth-Kuiper belts. Here, we present the results of dynamical simulations of HR…

Earth and Planetary Astrophysics · Physics 2016-08-17 B. Contro , J. Horner , R. A. Wittenmyer , J. P. Marshall , T. C. Hinse

HD32297 is a young A-star (~30 Myr) 112 pc away with a bright edge-on debris disk that has been resolved in scattered light. We observed the HD32297 debris disk in the far-infrared and sub-millimeter with the Herschel Space Observatory PACS…

Solar and Stellar Astrophysics · Physics 2015-06-16 J. K. Donaldson , J. Lebreton , A. Roberge , J. -C. Augereau , A. V. Krivov

We present the discovery of debris systems around three solar mass stars based upon observations performed with the Spitzer Space Telescope as part of a Legacy Science Program, ``the Formation and Evolution of Planetary Systems'' (FEPS). We…

Using the NASA/IRTF SpeX & BASS spectrometers we have obtained novel 0.7 - 13 um observations of the newly imaged HD36546 debris disk system. The SpeX spectrum is most consistent with the photospheric emission expected from an Lstar ~ 20…

Solar and Stellar Astrophysics · Physics 2017-05-24 Carey M. Lisse , Mike L. Sitko , Ray W. Russell , Massimo Marengo , Thayne Currie , Carl Melis , Tushar Mittal , Inseok Song

The disk around HD 141569 is one of a handful of systems whose weak infrared emission is consistent with a debris disk, but still has a significant reservoir of gas. Here we report spatially resolved mm observations of the CO(3-2) and…

The HR 8799 system, with its four giant planets and two debris belts, has an architecture closely mirroring that of our Solar system where the inner, warm asteroid belt and outer, cool Edgeworth-Kuiper belt bracket the giant planets. As…

Earth and Planetary Astrophysics · Physics 2015-02-10 Bruna Contro , Rob Wittenmyer , Jonti Horner , Jonathan P. Marshall

We have obtained sub-arcsec mid-IR images of a sample of debris disks within 100 pc. For our sample of nineteen A-type debris disk candidates chosen for their IR excess, we have resolved, for the first time, five sources plus the previously…

Solar and Stellar Astrophysics · Physics 2015-03-17 Margaret Moerchen , Charles Telesco , Christopher Packham

In many ways, the HR8799 system resembles our Solar system more closely than any other discovered to date - albeit on a larger, younger, and more dramatic scale - featuring four giant planets and two debris belts. The first belt lies beyond…

Solar and Stellar Astrophysics · Physics 2015-05-14 B. Contro , R. A. Wittenmyer , J. Horner , J. P. Marshall

Mechanisms such as collisions of rocky bodies or cometary activity give rise to dusty debris disks. Debris disks trace the leftover building blocks of planets, and thus also planetary composition. HD 172555, a stellar twin of beta Pic,…

We present 880 um Submillimeter Array observations of the debris disks around the young solar analogue HD 107146 and the multiple-planet host star HR 8799, at an angular resolution of 3" and 6", respectively. We spatially resolve the inner…

Earth and Planetary Astrophysics · Physics 2015-05-28 A. Meredith Hughes , David J. Wilner , Sean M. Andrews , Jonathan P. Williams , Kate Y. L. Su , Ruth A. Murray-Clay , Chunhua Qi

Since giant planets scatter planetesimals within a few tidal radii of their orbits, the locations of existing planetesimal belts indicate regions where giant planet formation failed in bygone protostellar disks. Infrared observations of…

Solar and Stellar Astrophysics · Physics 2015-05-20 Sarah E. Dodson-Robinson , C. A. Beichman , John M. Carpenter , Geoffrey Bryden

We report the discovery of four rare debris disks with warm excesses around F-stars, significantly increasing the number of such systems known in the solar neighborhood. Three of the disks are consistent with the predictions of steady state…

Solar and Stellar Astrophysics · Physics 2009-08-05 A. Moór , D. Apai , I. Pascucci , P. Ábrahám , C. Grady , Th. Henning , A. Juhász , Cs. Kiss , Á. Kóspál

A significant fraction of nearby young moving group members harbor circumstellar debris dust disks. Due to their proximity and youth, these disks are attractive targets for studying the early evolution of debris dust and planetesimal belts.…

Solar and Stellar Astrophysics · Physics 2016-08-03 A. Moór , Á. Kóspál , P. Ábrahám , Z. Balog , T. Csengeri , Th. Henning , A. Juhász , Cs. Kiss

Observations of debris disks allow for the study of planetary systems, even where planets have not been detected. However, debris disks are often only characterized by unresolved infrared excesses that resemble featureless blackbodies, and…

Earth and Planetary Astrophysics · Physics 2015-06-22 Nicholas P. Ballering , George H. Rieke , Andras Gaspar
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