elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

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

[img] PDF
932kB

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

Abstract

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
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mommert, M.Northern Arizona University, PO Box 6010, Flagstaff, AZ 86011, USAUNSPECIFIED
Harris, A. W.alan.harris (at) dlr.deUNSPECIFIED
Mueller, M.SRON, 9700 AV Groningen, The NetherlandsUNSPECIFIED
Hora, J. L.Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USAUNSPECIFIED
Trilling, D. E.Department of Physics and Astronomy, Northern Arizona University, Flagstaff, AZ 86001, USAUNSPECIFIED
Bottke, W.Southwest Research Institute, Boulder, CO 80302, USAUNSPECIFIED
Thomas, C.A.ORAU/NASA Goddard Space Flight Center, Greenbelt, MD 20771, USAUNSPECIFIED
Delbo, M.Université de Nice Sophia Antipolis, CNRS, Observatoire de la Côte d’Azur, Nice, FranceUNSPECIFIED
Emery, J.P.Department of Earth and Planetary Sciences, University of Tennessee, USAUNSPECIFIED
Fazio, G.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-65, Cambridge, MA 02138, USAUNSPECIFIED
Smith, H. A.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-65, Cambridge, MA 02138, USAUNSPECIFIED
Date:2015
Journal or Publication Title:Astronomical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:150
DOI :10.1088/0004-6256/150/4/106
Page Range:pp. 1-9
Editors:
EditorsEmail
UNSPECIFIEDThe American Astronomical Society
Publisher:American Astronomical Society
ISSN:0004-6256
Status:Published
Keywords:Asteroids, comets, minor planets
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Exploration des Sonnensystems
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

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.