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Centaurs and Scattered Disk Objects in the Thermal Infrared: Analysis of WISE/NEOWISE Observations

Bauer, James M. and Grav, Tommy and Blauvelt, Erin and Mainzer, A. K. and Masiero, Joseph R. and Stevenson, Rachel and Kramer, Emily and Fernandez, Yan R. and Lisse, C. M. and Cutri, Roc M. and Weissman, Paul R. and Dailey, John W. and Masci, Frank J. and Walker, Russell and Waszczak, Adam and Nugent, Carrie R. and Meech, Karen J. and Lucas, Andrew and Pearman, George and Wilkins, Ashlee and Watkins, Jessica and Kulkarni, Shrinivas R. and Wright, Edward L. (2013) Centaurs and Scattered Disk Objects in the Thermal Infrared: Analysis of WISE/NEOWISE Observations. Astrophysical Journal, 773 (1). Art. No. 22. ISSN 0004-637X. doi:10.1088/0004-637X/773/1/22.

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The Wide-field Infrared Survey Explorer (WISE) observed 52 Centaurs and scattered disk objects (SDOs) in the thermal infrared, including 15 new discoveries. We present analyses of these observations to estimate sizes and mean optical albedos. We find mean albedos of 0.08 ± 0.04 for the entire data set. Thermal fits yield average beaming parameters of 0.9 ± 0.2 that are similar for both SDO and Centaur sub-classes. Biased cumulative size distributions yield size-frequency distribution power law indices of ~–1.7 ± 0.3. The data also reveal a relation between albedo and color at the 3σ level. No significant relation between diameter and albedos is found.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Grav, Tommy0000-0002-3379-0534
Masiero, Joseph R.0000-0003-2638-720X
Kramer, Emily0000-0003-0457-2519
Fernandez, Yan R.0000-0003-1156-9721
Lisse, C. M.0000-0002-9548-1526
Cutri, Roc M.0000-0002-0077-2305
Masci, Frank J.0000-0002-8532-9395
Meech, Karen J.0000-0002-2058-5670
Kulkarni, Shrinivas R.0000-0001-5390-8563
Wright, Edward L.0000-0001-5058-1593
Additional Information:© 2013 American Astronomical Society. Received 2013 February 23; accepted 2013 June 5; published 2013 July 22. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. This publication also makes use of data products from NEOWISE, which is a project of JPL/Caltech, funded by the Planetary Science Division of NASA. This material is based in part upon work supported by NASA through the NASA Astrobiology Institute under Cooperative Agreement No. NNA09DA77A issued through the Office of Space Science. R. Stevenson is supported by the NASA Postdoctoral Program, and E. Kramer acknowledges her support through the JPL graduate internship program. Data were based in part on observations obtained at the Hale Telescope, Palomar Observatory, as part of a collaborative agreement between the California Institute of Technology, its divisions Caltech Optical Observatories, and the Jet Propulsion Laboratory (operated for NASA). Also, this work is based in part on observations obtained at the Southern Astrophysical Research (SOAR) telescope, which is a joint project of the Ministério da Ciência, Tecnologia, e Inovação (MCTI) da República Federativa do Brasil, the U.S. National Optical Astronomy Observatory (NOAO), the University of North Carolina at Chapel Hill (UNC), and Michigan State University (MSU), with time allocated through NOAO. We thank the anonymous reviewer for the very helpful comments of manuscript drafts.
Group:Palomar Transient Factory, Infrared Processing and Analysis Center (IPAC), Division of Geological and Planetary Sciences
Funding AgencyGrant Number
NASA Postdoctoral ProgramUNSPECIFIED
JPL Graduate FellowshipUNSPECIFIED
Subject Keywords: comets: general; minor planets, asteroids: general
Issue or Number:1
Record Number:CaltechAUTHORS:20130910-135805155
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Official Citation:Centaurs and Scattered Disk Objects in the Thermal Infrared: Analysis of WISE/NEOWISE Observations James M. Bauer, Tommy Grav, Erin Blauvelt, A. K. Mainzer, Joseph R. Masiero, Rachel Stevenson, Emily Kramer, Yan R. Fernández, C. M. Lisse, Roc M. Cutri, Paul R. Weissman, John W. Dailey, Frank J. Masci, Russel Walker, Adam Waszczak, Carrie R. Nugent, Karen J. Meech, Andrew Lucas, George Pearman, Ashlee Wilkins, Jessica Watkins, Shrinivas Kulkarni, Edward L. Wright, and the WISE and PTF Teams doi:10.1088/0004-637X/773/1/22
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41215
Deposited By: Ruth Sustaita
Deposited On:10 Sep 2013 21:52
Last Modified:10 Nov 2021 04:27

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