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Explore NEOs: The Warm Spitzer NEO survey

Trilling, D. und Bhattacharya, B. und Bottke, W. und Chesley, S. und Delbo, M. und Emery, J. und Fazio, G. und Harris, A.W. und Hora, J. und Mainzer, A. und Mueller, M. und Penprase, B. und Smith, H und Spahr, T und Stansberry, J.A. und Thomas, C.A. (2009) Explore NEOs: The Warm Spitzer NEO survey. In: Bulletin of the American Astronomical Society, 41 (3). AAS. American Astronomical Society, DPS meeting #41, 04 Oct - 09 Oct 2009 , Puert Rico, USA.

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Kurzfassung

The majority of Near Earth Objects (NEOs) originated in collisions between bodies in the main asteroid belt and have found their way into near Earth space via complex and little understood dynamical interactions. This transport of material from the main belt into the inner Solar System has shaped the histories of the terrestrial planets. However, despite their scientific importance, key characteristics of the NEO population --- such as the size distribution, mix of albedos and mineralogies, and contributions from so-called dead or dormant comets --- remain largely unexplored; some 99% of all presently known NEOs are essentially uncharacterized. We have an approved 500 hour Warm Spitzer program to derive albedos and diameters for some 700 NEOs. We will measure the size distribution of this population to understand fundamental physical processes that occur among the small bodies of our Solar System. We will measure the fraction of NEOs likely to be dead comets, with implications for the flux of organic material onto the Earth. We will measure the NEO albedo distribution, which indicates the compositional diversity among these small bodies. We will study properties of individual NEOs, including their surface properties and potentially their densities, and detailed properties of a subset of well-characterized objects. Our Warm Spitzer program will begin execution in August, 2009, and will return on average one target per day for the next two years. We will present the first results from our program at the DPS meeting. This work is based on observations made with the Spitzer Space Telescope, which is operated by JPL/Caltech, under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech.

Dokumentart:Konferenzbeitrag (Paper)
Titel:Explore NEOs: The Warm Spitzer NEO survey
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Trilling, D.Northern Arizona Univ., USA
Bhattacharya, B.NASA Herschel Science Center, USA
Bottke, W.Southwest Research Institute, USA
Chesley, S.NASA-JPL, USA
Delbo, M.Observatoire de la Côte d'Azur, France
Emery, J.University of Tenessee, USA
Fazio, G.Harvard-Smithsonian Center for Astrophysics, USA
Harris, A.W.NICHT SPEZIFIZIERT
Hora, J.Harvard-Smithsonian Center for Astrophysics, USA
Mainzer, A.NASA-JPL, USA
Mueller, M.University of Arizona, USA
Penprase, B.Pomona College, USA
Smith, HHarvard-Smithsonian Center for Astrophysics, USA
Spahr, THarvard-Smithsonian Center for Astrophysics, USA
Stansberry, J.A.University of Arizona, USA
Thomas, C.A.Northern Arizona Univ., USA
Datum:September 2009
Erschienen in:Bulletin of the American Astronomical Society
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:41
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
AAS, DPSNICHT SPEZIFIZIERT
Verlag:AAS
Name der Reihe:Bulletin of the American Astronomical Society
Status:veröffentlicht
Stichwörter:Near-Earth objects, asteroids, Warm Spitzer
Veranstaltungstitel:American Astronomical Society, DPS meeting #41
Veranstaltungsort:Puert Rico, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:04 Oct - 09 Oct 2009
Veranstalter :American Astronomical Society Division for Planetary Sciences
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EW - Erforschung des Weltraums
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Asteroiden und Kometen (alt)
Standort: Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung > Asteroiden und Kometen
Hinterlegt von: Prof. Alan Harris
Hinterlegt am:11 Nov 2009 08:30
Letzte Änderung:11 Nov 2009 08:30

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