A dataset provided by the European Space Agency

Name OT2_dpadgett_2
Title Warm A Star Debris Disks from WISE
URL

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DOI 10.5270/esa-c3jbdqp
Author padgett, d.
Description Debris disks trace the collisional breakdown of asteroid and comet parent bodies orbiting nearby main sequence stars. Debris disks are typically cold analogs of our Kuiper belt with emission peaking near 70 microns wavelength. However, a relatively small number of warm disks are known with emission at 22 - 24 microns. These systems are especially interesting because they trace dust in the region likely to host terrestrial planets, where the dust has a short dynamical lifetimes. They also tend to be young systems aged < 1 Gyr. This knowledge of warm debris disks - extrasolar analogs to our solar system.s Zodiacal cloud - is based on the 25 year old IRAS survey and observations of selected targets with ISO and Spitzer. The Wide-Field Infrared Survey Explorer (WISE) has recently completed new, sensitive all-sky mapping in the 3.3, 4.6, 12, and 22 micron bands. Association of the WISE sources to Hipparcos and Tycho stars has led to the identification of 61 nearby main sequence A stars with robustly detected warm 22 micron excesses not previously known. To determine whether these systems represent outbursts of asteroidal dust production (such as in the HD 69830 system), or simply the Wien side of emission from a cold outer dust belt, photometry at longer wavelengths is needed. We propose Herschel-PACS 70 and 160 micron photometry of this unbiased sample of new A star debris disks. These data will allow us to fully characterize the dust temperature and infrared luminosity of these systems, allowing them to be understood in the context of other debris disks and disk evolution theory. Herschel OT1 observations of FGKM stars from this survey show a 90% detection rate for 70 micron excess emission. The results from these combined samples will strongly constrain our picture of the collisional history of inner planetary systems.
Publication
Instrument PACS_PacsPhoto_largeScan
Temporal Coverage 2013-02-20T16:29:00Z/2013-04-10T13:01:19Z
Version SPG v14.2.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2013-10-10T12:47:19Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-10-10T12:47:19Z, OT2_dpadgett_2, SPG v14.2.0. https://doi.org/10.5270/esa-c3jbdqp