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The Size Distribution of Near-Earth Objects Larger Than 10m
| Indexado |
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| DOI | 10.3847/1538-3881/AA8036 | ||||
| Año | 2017 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
We analyzed data from the first year of a survey for Near-Earth Objects (NEOs) that we are carrying out with the Dark Energy Camera (DECam) on the 4 m Blanco telescope at the Cerro Tololo Inter-American Observatory. We implanted synthetic NEOs into the data stream to derive our nightly detection efficiency as a function of magnitude and rate of motion. Using these measured efficiencies and the solar system absolute magnitudes derived by the Minor Planet Center for the 1377. measurements of 235. unique NEOs detected, we directly derive, for the first time from a single observational data set, the NEO size distribution from 1. km down to 10 m. We find that there are 106.6 NEOs larger than 10 m. This result implies a factor of 10 fewer small NEOs than some previous results, though our derived size distribution is in good agreement with several other estimates.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Trilling, D. | Hombre |
No Arizona Univ - Estados Unidos
South African Astron Observ - República de Sudáfrica Univ Western Cape - República de Sudáfrica Northern Arizona University - Estados Unidos South African Astronomical Observatory - República de Sudáfrica University of the Western Cape - República de Sudáfrica |
| 2 | Valdes, F. | Hombre |
Natl Opt Astron Observ - Estados Unidos
National Optical Astronomy Observatory - Estados Unidos |
| 3 | Allen, Lori E. | Mujer |
Natl Opt Astron Observ - Estados Unidos
National Optical Astronomy Observatory - Estados Unidos |
| 4 | James, David J. | Hombre |
Natl Opt Astron Observ - Chile
Cerro Tololo Inter American Observatory - Chile National Optical Astronomy Observatory - Chile |
| 5 | FUENTES-GONZALEZ, CESAR ISAIAS | Hombre |
Universidad de Chile - Chile
Centro de Excelencia en Astrofísica y Tecnologías Afines - Chile |
| 6 | HERRERA-TORO, DANIELA | Mujer |
Natl Opt Astron Observ - Estados Unidos
National Optical Astronomy Observatory - Estados Unidos |
| 7 | Axelrod, Tim S. | Hombre |
UNIV ARIZONA - Estados Unidos
The University of Arizona - Estados Unidos |
| 8 | Rajagopal, Jayadev | - |
Natl Opt Astron Observ - Estados Unidos
National Optical Astronomy Observatory - Estados Unidos |
| Fuente |
|---|
| National Science Foundation |
| Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro |
| Conselho Nacional de Desenvolvimento Científico e Tecnológico |
| Deutsche Forschungsgemeinschaft |
| Financiadora de Estudos e Projetos |
| Ministry of Education and Science of Ukraine |
| U.S. Department of Energy |
| U.S. National Science Foundation |
| Ohio State University |
| NASA |
| Science and Technology Facilities Council |
| National Aeronautics and Space Administration |
| University of Chicago |
| Science and Technology Facilities Council of the United Kingdom |
| Ministry of Science and Education of Spain |
| Higher Education Funding Council for England |
| National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign |
| Kavli Institute of Cosmological Physics at the University of Chicago |
| Ministerio da Ciencia, Tecnologia e Inovacao |
| Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro |
| Collaborating Institutions in the Dark Energy Survey |
| Conselho Nacional de Desenvolvimento CientÃfico e Tecnológico |
| Center for Cosmology and Astroparticle Physics, Ohio State University |
| Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University |
| Ministério da Ciência, Tecnologia e Ensino Superior |
| Agradecimiento |
|---|
| We thank Peter Brown and Alan Harris (DLR) for many useful conversations and Steve Chelsey and an anonymous AAS statistics reviewer for useful comments that improved this paper. We thank the NOAO TAC and Director Dave Silva for granting Survey status for this program. We also thank Dave Silva and NOAO for acquiring the VR filter that we use in our survey. We gratefully acknowledge the hard work and help that Tim Spahr and Gareth Williams of the Minor Planet Center have provided and continue to provide in support of our DECam NEO survey. DET carried out some of the work on this paper while being hosted at Lowell Observatory. This work was supported in part by NASA award NNX12AG13G. This work is based on observations at Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory (NOAO Prop. 2013B-0536; PI: L. Allen), which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. |
| We thank Peter Brown and Alan Harris (DLR) for many useful conversations and Steve Chelsey and an anonymous AAS statistics reviewer for useful comments that improved this paper. We thank the NOAO TAC and Director Dave Silva for granting Survey status for this program. We also thank Dave Silva and NOAO for acquiring the VR filter that we use in our survey. We gratefully acknowledge the hard work and help that Tim Spahr and Gareth Williams of the Minor Planet Center have provided and continue to provide in support of our DECam NEO survey. DET carried out some of the work on this paper while being hosted at Lowell Observatory. This work was supported in part by NASA award NNX12AG13G. This work is based on observations at Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory (NOAO Prop. 2013B-0536; PI: L. Allen), which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. |
