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Spectral similarity of unbound asteroid pairs

Wolters, Stephen D., Weissman, Paul R., Christou, Apostolis, Duddy, Samuel R., Lowry, Stephen C. (2014) Spectral similarity of unbound asteroid pairs. Monthly Notices of the Royal Astronomical Society, 439 (3). pp. 3085-3093. ISSN 0035-8711. E-ISSN 1365-2966. (doi:10.1093/mnras/stu171) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:52270)

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Infrared (IR) spectroscopy between 0.8 and 2.5 μ has been obtained for both components of three unbound asteroid pairs, using theNASA Infrared Telescope Facility with the SpeX instrument. Pair primary (2110) Moore-Sitterly is classified as an S-type following the Bus-DeMeo taxonomy; the classification for secondary (44612) 1999 RP27 is ambiguous: S/Sq/Q/K/Ltype. Primary (10484) Hecht and secondary (44645) 1999 RC118 are classified as V-types. IR spectra for Moore-Sitterly and Hecht are each linked with available visual photometry. The classifications for primary (88604) 2001 QH293 and (60546) 2000 EE85 are ambiguous: S/Sq/Q/K/L-type. Subtle spectral differences between them suggest that the primary may have more weathered material on its surface. Dynamical integrations have constrained the ages of formation: 2110-44612 > 782 kyr; 10484-44645 = 348 (+823,-225) kyr; 88604-60546 = 925 (+842,-754) kyr. The spectral similarity of seven complete pairs is ranked in comparison with nearby background asteroids. Two pairs, 17198-229056 and 19289-278067, have significantly different spectra between the components, compared to the similarity of spectra in the background population. The other pairs are closer than typical, supporting an interpretation of each pair's formation from a common parent body. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.

Item Type: Article
DOI/Identification number: 10.1093/mnras/stu171
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Mon. Not. R. Astron. Soc. [Field not mapped to EPrints] AD - Planetary Science Section, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena CA 91109, United States [Field not mapped to EPrints] AD - Armagh Observatory, College Hill, Armagh BT61 9DG, United Kingdom [Field not mapped to EPrints] AD - Centre for Astrophysics and Planetary Science, School of Physical Science, University of Kent, Canterbury CT2 7NH, United Kingdom [Field not mapped to EPrints] AD - The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Minor planets, asteroids: general, Surveys
Subjects: Q Science > QB Astronomy
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Stephen Lowry
Date Deposited: 08 Dec 2015 22:32 UTC
Last Modified: 17 Aug 2022 10:59 UTC
Resource URI: (The current URI for this page, for reference purposes)

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