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Exploreneos. Viii. Dormant short-period comets in the near-Earth asteroid population

Mommert, M. and Harris, A. W. and Mueller, M. and Hora, J. L. and Trilling, D. E. and Bottke, W. and Thomas, C.A. and Delbo, M. and Emery, J.P. and Fazio, G. and Smith, H. A. (2015) Exploreneos. Viii. Dormant short-period comets in the near-Earth asteroid population. Astronomical Journal, 150 (106), pp. 1-9. American Astronomical Society. doi: 10.1088/0004-6256/150/4/106. ISSN 0004-6256.

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Official URL: http://iopscience.iop.org/article/10.1088/0004-6256/150/4/106/meta;jsessionid=B280CC4B89EE2B21999EC73119B85500.c1


We perform a search for dormant comets, asteroidal objects of cometary origin, in the near-Earth asteroid (NEA) population based on dynamical and physical considerations. Our study is based on albedos derived within the ExploreNEOs program and is extended by adding data from NEOWISE and the Akari asteroid catalog. We use a statistical approach to identify asteroids on orbits that resemble those of short-period near-Earth comets (NECs) using the Tisserand parameter with respect to Jupiter, the aphelion distance, and the minimum orbital intersection distance with respect to Jupiter. From the sample of NEAs on comet-like orbits, we select those with a geometric albedo pv ≤ 0.064 as dormant comet candidates, and find that only ~50% of NEAs on comet-like orbits also have comet-like albedos. We identify a total of 23 NEAs from our sample that are likely to be dormant short-period NECs and, based on a de-biasing procedure applied to the cryogenic NEOWISE survey, estimate both magnitude-limited and size-limited fractions of the NEA population that are dormant short-period comets. We find that 0.3%–3.3% of the NEA population with H ≤ 21, and 9 (+2/-5)% of the population with diameters d ≥ 1 km, are dormant short-period NECs.

Item URL in elib:https://elib.dlr.de/98372/
Document Type:Article
Title:Exploreneos. Viii. Dormant short-period comets in the near-Earth asteroid population
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Mommert, M.Northern Arizona University, PO Box 6010, Flagstaff, AZ 86011, USAUNSPECIFIEDUNSPECIFIED
Mueller, M.SRON, 9700 AV Groningen, The NetherlandsUNSPECIFIEDUNSPECIFIED
Hora, J. L.Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USAUNSPECIFIEDUNSPECIFIED
Trilling, D. E.Department of Physics and Astronomy, Northern Arizona University, Flagstaff, AZ 86001, USAUNSPECIFIEDUNSPECIFIED
Bottke, W.Southwest Research Institute, Boulder, CO 80302, USAUNSPECIFIEDUNSPECIFIED
Thomas, C.A.ORAU/NASA Goddard Space Flight Center, Greenbelt, MD 20771, USAUNSPECIFIEDUNSPECIFIED
Delbo, M.Université de Nice Sophia Antipolis, CNRS, Observatoire de la Côte d’Azur, Nice, FranceUNSPECIFIEDUNSPECIFIED
Emery, J.P.Department of Earth and Planetary Sciences, University of Tennessee, USAUNSPECIFIEDUNSPECIFIED
Fazio, G.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-65, Cambridge, MA 02138, USAUNSPECIFIEDUNSPECIFIED
Smith, H. A.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-65, Cambridge, MA 02138, USAUNSPECIFIEDUNSPECIFIED
Journal or Publication Title:Astronomical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1-9
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:American Astronomical Society
Keywords:Asteroids, comets, minor planets
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Harris, Prof. Alan
Deposited On:13 Oct 2015 08:04
Last Modified:31 Jul 2019 19:55

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