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ExploreNEOs. V. Average Albedo by Taxonomic Complex in the Near-Earth Asteroid Population

Thomas, C.A. and Trilling, D.E. and Emery, J.P. and Mueller, M. and Hora, J.L. and Benner, L.A.M. and Bhattacharya, B. and Bottke, W.F. and Chesley, S. and Delbo, M. and Fazio, G. and Harris, A.W. and Mainzer, A. and Mommert, M. and Morbidelli, A. and Penprase, B. and Smith, H.A. and Spahr, T.B. and Stansberry, J.A. (2011) ExploreNEOs. V. Average Albedo by Taxonomic Complex in the Near-Earth Asteroid Population. Astronomical Journal, 142 (3), p. 109. American Astronomical Society. doi: 10.1088/0004-6256/142/3/85.

Full text not available from this repository.

Official URL: http://iopscience.iop.org/1538-3881/142/3/85/pdf/aj_142_3_85.pdf

Abstract

Examining the albedo distribution of the near-Earth object (NEO) population allows for a better understanding of the relationship between absolute (H) magnitude and size, which impacts calculations of the size frequency distribution and impact hazards. Examining NEO albedos also sheds light on the differences between the NEO and Main Belt populations. We combine albedo results from the ExploreNEOs Warm Spitzer Exploration Science program with taxonomic classifications from the literature, publicly available data sets, and new observations from our concurrent spectral survey to derive the average albedos for C-, D-, Q-, S-, V-, and X-complex NEOs. Using a sample size of 118 NEOs, we calculate average albedos of 0.29+0.05 –0.04, 0.26+0.04 –0.03, and 0.42+0.13 –0.11 for the Q-, S-, and V-complexes, respectively. The averages for the C- and D-complexes are 0.13+0.06 –0.05 and 0.02+0.02 –0.01, but these averages are based on a small number of objects (five and two, respectively) and will improve with additional observations. We use albedos to assign X-complex asteroids to one of the E-, M-, or P-types. Our results demonstrate that the average albedos for the C-, S-, V-, and X-complexes are higher for NEOs than the corresponding averages observed in the Main Belt.

Item URL in elib:https://elib.dlr.de/70791/
Document Type:Article
Additional Information:Article i.d: The Astronomical Journal, Volume 141, Issue 4, article id. 109 (2011)
Title:ExploreNEOs. V. Average Albedo by Taxonomic Complex in the Near-Earth Asteroid Population
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Thomas, C.A.Northern Arizona University, USAUNSPECIFIED
Trilling, D.E.Northern Arizona University, USAUNSPECIFIED
Emery, J.P.Department of Earth and Planetary Sciences, University of Tennessee, USAUNSPECIFIED
Mueller, M.Universite de Nice Sophia Antipolis, CNRS, FranceUNSPECIFIED
Hora, J.L.Harvard-Smithsonian Center for Astrophysics, USAUNSPECIFIED
Benner, L.A.M.Jet Propulsion Laboratory, California Institute of Technology, USAUNSPECIFIED
Bhattacharya, B.Claremont McKenna, Pitzer, and Scripps Colleges, Claremont, California, USAUNSPECIFIED
Bottke, W.F.Southwest Research Institute, USAUNSPECIFIED
Chesley, S.Jet Propulsion Laboratory, California Institute of Technology, USAUNSPECIFIED
Delbo, M.Universite de Nice Sophia Antipolis, CNRS, FranceUNSPECIFIED
Fazio, G.Harvard-Smithsonian Center for Astrophysics, USAUNSPECIFIED
Harris, A.W.alan.harris (at) dlr.deUNSPECIFIED
Mainzer, A.Jet Propulsion Laboratory, California Institute of Technology, USAUNSPECIFIED
Mommert, M.michael.mommert (at) dlr.deUNSPECIFIED
Morbidelli, A.Universite de Nice Sophia Antipolis, CNRS, FranceUNSPECIFIED
Penprase, B.Department of Physics and Astronomy, Pomona College, USAUNSPECIFIED
Smith, H.A.Harvard-Smithsonian Center for Astrophysics, USAUNSPECIFIED
Spahr, T.B.Harvard-Smithsonian Center for Astrophysics, USAUNSPECIFIED
Stansberry, J.A.Steward Observatory, University of Arizona, USAUNSPECIFIED
Date:September 2011
Journal or Publication Title:Astronomical Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:142
DOI : 10.1088/0004-6256/142/3/85
Page Range:p. 109
Publisher:American Astronomical Society
Status:Published
Keywords:Asteroids, Near-Earth objects, Spitzer Space telescope
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Exploration des Sonnensystems (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Harris, Prof. Alan
Deposited On:28 Sep 2011 15:44
Last Modified:10 Jan 2019 15:46

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