Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger - search for the YORP effect
Identifieur interne : 005E63 ( Main/Exploration ); précédent : 005E62; suivant : 005E64Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger - search for the YORP effect
Auteurs : J. Durech [République tchèque] ; D. Vokrouhlicky [République tchèque] ; A. R. Baransky [Ukraine] ; S. Breiter [Pologne] ; O. A. Burkhonov [Ouzbékistan] ; W. Cooney [États-Unis] ; V. Fuller [États-Unis] ; N. M. Gaftonyuk [Ukraine] ; J. Gross [États-Unis] ; R. Ya. Inasaridze [Géorgie] ; M. Kaasalainen [Finlande] ; Yu. N. Krugly [Ukraine] ; O. I. Kvaratshelia [Géorgie] ; E. A. Litvinenko [Russie] ; B. Macomber [États-Unis] ; F. Marchis [États-Unis] ; I. E. Molotov [Russie] ; J. Oey [Australie] ; D. Polishook [États-Unis] ; J. Pollock [États-Unis] ; P. Pravec [République tchèque] ; K. Sarneczky [Hongrie] ; V. G. Shevchenko [Ukraine] ; I. Slyusarev [Ukraine] ; R. Stephens [États-Unis] ; Gy. Szabo [Hongrie] ; D. Teffell [États-Unis] ; F. Vachier [France] ; Z. Vanderplate [États-Unis] ; M. Viikinkoski [Finlande] ; B. D. Warner [États-Unis]Source :
- Astronomy and astrophysics : (Berlin. Print) [ 0004-6361 ] ; 2012.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Context. The spin state of small asteroids can change on a long timescale by the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, the net torque that arises from anisotropically scattered sunlight and proper thermal radiation from an irregularly-shaped asteroid. The secular change in the rotation period caused by the YORP effect can be detected by analysis of asteroid photometric lightcurves. Aims. We analyzed photometric lightcurves of near-Earth asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger with the aim to detect possible deviations from the constant rotation caused by the YORP effect. Methods. We carried out new photometric observations of the three asteroids, combined the new lightcurves with archived data, and used the lightcurve inversion method to model the asteroid shape, pole direction, and rotation rate. The YORP effect was modeled as a linear change in the rotation rate in time dω/dt. Values of dω/dt derived from observations were compared with the values predicted by theory. Results. We derived physical models for all three asteroids. We had to model Eger as a nonconvex body because the convex model failed to fit the lightcurves observed at high phase angles. We probably detected the acceleration of the rotation rate of Eger dω/dt = (1.4 ± 0.6) x 10-8 rad d-2 (3σ error), which corresponds to a decrease in the rotation period by 4.2 ms yr-1. The photometry of Cerberus and Ra-Shalom was consistent with a constant-period model, and no secular change in the spin rate was detected. We could only constrain maximum values of |dω/dt| < 8 x 10-9 rad d-2 for Cerberus, and |dω/dt| < 3 x 10-8 rad d-2 for Ra-Shalom.
Affiliations:
- Australie, Finlande, France, Géorgie, Hongrie, Ouzbékistan, Pologne, Russie, République tchèque, Ukraine, États-Unis
- Bohême centrale, District fédéral central, Hongrie centrale, Massachusetts, Île-de-France
- Budapest, Cambridge (Massachusetts), Moscou, Paris, Prague
- Massachusetts Institute of Technology
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Inasaridze</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Kharadze Abastumani Astrophysical Observatory, Ilia State University, G.Tsereteli str. 3</s1><s2>Tbilisi 0162</s2><s3>GEO</s3><sZ>10 aut.</sZ><sZ>13 aut.</sZ></inist:fA14><country>Géorgie</country><wicri:noRegion>Tbilisi 0162</wicri:noRegion></affiliation></author><author><name sortKey="Kaasalainen, M" sort="Kaasalainen, M" uniqKey="Kaasalainen M" first="M." last="Kaasalainen">M. Kaasalainen</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Department of Mathematics, Tampere University of Technology, PO Box 553</s1><s2>33101 Tampere</s2><s3>FIN</s3><sZ>11 aut.</sZ><sZ>30 aut.</sZ></inist:fA14><country>Finlande</country><wicri:noRegion>33101 Tampere</wicri:noRegion></affiliation></author><author><name sortKey="Krugly, Yu N" sort="Krugly, Yu N" uniqKey="Krugly Y" first="Yu. N." last="Krugly">Yu. N. Krugly</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Institute of Astronomy of Kharkiv National University, Sumska str. 35</s1><s2>Kharkiv 61022</s2><s3>UKR</s3><sZ>12 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>Kharkiv 61022</wicri:noRegion></affiliation></author><author><name sortKey="Kvaratshelia, O I" sort="Kvaratshelia, O I" uniqKey="Kvaratshelia O" first="O. I." last="Kvaratshelia">O. I. Kvaratshelia</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Kharadze Abastumani Astrophysical Observatory, Ilia State University, G.Tsereteli str. 3</s1><s2>Tbilisi 0162</s2><s3>GEO</s3><sZ>10 aut.</sZ><sZ>13 aut.</sZ></inist:fA14><country>Géorgie</country><wicri:noRegion>Tbilisi 0162</wicri:noRegion></affiliation></author><author><name sortKey="Litvinenko, E A" sort="Litvinenko, E A" uniqKey="Litvinenko E" first="E. A." last="Litvinenko">E. A. Litvinenko</name><affiliation wicri:level="1"><inist:fA14 i1="11"><s1>The Central (Pulkovo) Astronomical Observatory of the Russian Academy of Sciences, Pulkovskoye chaussee 65/1</s1><s2>St.-Petersburg 196140</s2><s3>RUS</s3><sZ>14 aut.</sZ></inist:fA14><country>Russie</country><wicri:noRegion>St.-Petersburg 196140</wicri:noRegion></affiliation></author><author><name sortKey="Macomber, B" sort="Macomber, B" uniqKey="Macomber B" first="B." last="Macomber">B. Macomber</name><affiliation wicri:level="1"><inist:fA14 i1="12"><s1>University of California at Berkeley, Department of Astronomy, 601 Campbell Hall</s1><s2>Berkeley, CA 94720</s2><s3>USA</s3><sZ>15 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Berkeley, CA 94720</wicri:noRegion></affiliation></author><author><name sortKey="Marchis, F" sort="Marchis, F" uniqKey="Marchis F" first="F." last="Marchis">F. Marchis</name><affiliation wicri:level="1"><inist:fA14 i1="12"><s1>University of California at Berkeley, Department of Astronomy, 601 Campbell Hall</s1><s2>Berkeley, CA 94720</s2><s3>USA</s3><sZ>15 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Berkeley, CA 94720</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>Carl Sagan Center, SETI institute, 189 Bernardo Av</s1><s2>Mountain View CA 94043</s2><s3>USA</s3><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Mountain View CA 94043</wicri:noRegion></affiliation></author><author><name sortKey="Molotov, I E" sort="Molotov, I E" uniqKey="Molotov I" first="I. E." last="Molotov">I. E. Molotov</name><affiliation wicri:level="1"><inist:fA14 i1="14"><s1>Keldysh Institute of Applied Mathematics, RAS, Miusskaya sq. 4</s1><s2>125047 Moscow</s2><s3>RUS</s3><sZ>17 aut.</sZ></inist:fA14><country>Russie</country><placeName><settlement type="city">Moscou</settlement><region>District fédéral central</region></placeName></affiliation></author><author><name sortKey="Oey, J" sort="Oey, J" uniqKey="Oey J" first="J." last="Oey">J. Oey</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>Kingsgrove Observatory, 23 Monaro Ave</s1><s2>Kingsgrove, NSW</s2><s3>AUS</s3><sZ>18 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Kingsgrove, NSW</wicri:noRegion></affiliation></author><author><name sortKey="Polishook, D" sort="Polishook, D" uniqKey="Polishook D" first="D." last="Polishook">D. Polishook</name><affiliation wicri:level="4"><inist:fA14 i1="16"><s1>Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology</s1><s2>Cambridge, MA 02139</s2><s3>USA</s3><sZ>19 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Cambridge (Massachusetts)</settlement><region type="state">Massachusetts</region></placeName><orgName type="university">Massachusetts Institute of Technology</orgName></affiliation></author><author><name sortKey="Pollock, J" sort="Pollock, J" uniqKey="Pollock J" first="J." last="Pollock">J. Pollock</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>Physics and Astronomy Department, Appalachian State University</s1><s2>Boone, NC 28608</s2><s3>USA</s3><sZ>7 aut.</sZ><sZ>20 aut.</sZ><sZ>29 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Boone, NC 28608</wicri:noRegion></affiliation></author><author><name sortKey="Pravec, P" sort="Pravec, P" uniqKey="Pravec P" first="P." last="Pravec">P. Pravec</name><affiliation wicri:level="1"><inist:fA14 i1="17"><s1>Ondřejov Observatory, AV ČR</s1><s2>251 65 Ondřejov</s2><s3>CZE</s3><sZ>21 aut.</sZ></inist:fA14><country>République tchèque</country><wicri:noRegion>251 65 Ondřejov</wicri:noRegion></affiliation></author><author><name sortKey="Sarneczky, K" sort="Sarneczky, K" uniqKey="Sarneczky K" first="K." last="Sarneczky">K. Sarneczky</name><affiliation wicri:level="1"><inist:fA14 i1="18"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO Box 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>22 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Hongrie</country><placeName><settlement type="city">Budapest</settlement><region nuts="2">Hongrie centrale</region></placeName></affiliation></author><author><name sortKey="Shevchenko, V G" sort="Shevchenko, V G" uniqKey="Shevchenko V" first="V. G." last="Shevchenko">V. G. Shevchenko</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Crimean Astrophysical Observatory, Simeiz Department</s1><s2>Simeiz 98680</s2><s3>UKR</s3><sZ>8 aut.</sZ><sZ>23 aut.</sZ><sZ>24 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>Simeiz 98680</wicri:noRegion></affiliation></author><author><name sortKey="Slyusarev, I" sort="Slyusarev, I" uniqKey="Slyusarev I" first="I." last="Slyusarev">I. Slyusarev</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Crimean Astrophysical Observatory, Simeiz Department</s1><s2>Simeiz 98680</s2><s3>UKR</s3><sZ>8 aut.</sZ><sZ>23 aut.</sZ><sZ>24 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>Simeiz 98680</wicri:noRegion></affiliation></author><author><name sortKey="Stephens, R" sort="Stephens, R" uniqKey="Stephens R" first="R." last="Stephens">R. Stephens</name><affiliation wicri:level="1"><inist:fA14 i1="19"><s1>Goat Mountain Astronomical Research Station, 11355 Mount Johnson Court</s1><s2>Rancho Cucamonga, CA 91737</s2><s3>USA</s3><sZ>25 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Rancho Cucamonga, CA 91737</wicri:noRegion></affiliation></author><author><name sortKey="Szabo, Gy" sort="Szabo, Gy" uniqKey="Szabo G" first="Gy." last="Szabo">Gy. Szabo</name><affiliation wicri:level="1"><inist:fA14 i1="18"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO Box 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>22 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Hongrie</country><placeName><settlement type="city">Budapest</settlement><region nuts="2">Hongrie centrale</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="20"><s1>Department of Experimental Physics, University of Szeged, Dóm tér 9</s1><s2>6720 Szeged</s2><s3>HUN</s3><sZ>26 aut.</sZ></inist:fA14><country>Hongrie</country><wicri:noRegion>6720 Szeged</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="23"><s1>ELTE Gao-Lendulet Research Group</s1><s2>9700 Szombathely</s2><s3>HUN</s3><sZ>26 aut.</sZ></inist:fA14><country>Hongrie</country><wicri:noRegion>ELTE Gao-Lendulet Research Group</wicri:noRegion></affiliation></author><author><name sortKey="Teffell, D" sort="Teffell, D" uniqKey="Teffell D" first="D." last="Teffell">D. Teffell</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Sonoita Research Observatory, 1442 E Roger Rd</s1><s2>Tuscon, AZ 85719</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>9 aut.</sZ><sZ>27 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Tuscon, AZ 85719</wicri:noRegion></affiliation></author><author><name sortKey="Vachier, F" sort="Vachier, F" uniqKey="Vachier F" first="F." last="Vachier">F. Vachier</name><affiliation wicri:level="3"><inist:fA14 i1="21"><s1>Institut de Mécanique Celeste et de Calcul des Éphémérides, Observatoire de Paris, UMR8028 CNRS, 77 Av. Denfert-Rochereau</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>28 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author><author><name sortKey="Vanderplate, Z" sort="Vanderplate, Z" uniqKey="Vanderplate Z" first="Z." last="Vanderplate">Z. Vanderplate</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>Physics and Astronomy Department, Appalachian State University</s1><s2>Boone, NC 28608</s2><s3>USA</s3><sZ>7 aut.</sZ><sZ>20 aut.</sZ><sZ>29 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Boone, NC 28608</wicri:noRegion></affiliation></author><author><name sortKey="Viikinkoski, M" sort="Viikinkoski, M" uniqKey="Viikinkoski M" first="M." last="Viikinkoski">M. Viikinkoski</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Department of Mathematics, Tampere University of Technology, PO Box 553</s1><s2>33101 Tampere</s2><s3>FIN</s3><sZ>11 aut.</sZ><sZ>30 aut.</sZ></inist:fA14><country>Finlande</country><wicri:noRegion>33101 Tampere</wicri:noRegion></affiliation></author><author><name sortKey="Warner, B D" sort="Warner, B D" uniqKey="Warner B" first="B. D." last="Warner">B. D. Warner</name><affiliation wicri:level="1"><inist:fA14 i1="22"><s1>Palmer Divide Observatory, 17955 Bakers Farm Rd., Colorado Springs</s1><s2>CO 80908</s2><s3>USA</s3><sZ>31 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>CO 80908</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">13-0057254</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 13-0057254 INIST</idno><idno type="RBID">Pascal:13-0057254</idno><idno type="wicri:Area/PascalFrancis/Corpus">000C98</idno><idno type="wicri:Area/PascalFrancis/Curation">005166</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">001356</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">001356</idno><idno type="wicri:doubleKey">0004-6361:2012:Durech J:analysis:of:the</idno><idno type="wicri:Area/Main/Merge">006191</idno><idno type="wicri:Area/Main/Curation">005E63</idno><idno type="wicri:Area/Main/Exploration">005E63</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger - search for the YORP effect</title><author><name sortKey="Durech, J" sort="Durech, J" uniqKey="Durech J" first="J." last="Durech">J. Durech</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Astronomical Institute, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2</s1><s2>18000 Prague</s2><s3>CZE</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>République tchèque</country><placeName><settlement type="city">Prague</settlement><region type="région" nuts="2">Bohême centrale</region></placeName></affiliation></author><author><name sortKey="Vokrouhlicky, D" sort="Vokrouhlicky, D" uniqKey="Vokrouhlicky D" first="D." last="Vokrouhlicky">D. Vokrouhlicky</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Astronomical Institute, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2</s1><s2>18000 Prague</s2><s3>CZE</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>République tchèque</country><placeName><settlement type="city">Prague</settlement><region type="région" nuts="2">Bohême centrale</region></placeName></affiliation></author><author><name sortKey="Baransky, A R" sort="Baransky, A R" uniqKey="Baransky A" first="A. R." last="Baransky">A. R. Baransky</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Astronomical Observatory of Taras Shevshenko National University, Astronomichna str. 3</s1><s2>Kiev</s2><s3>UKR</s3><sZ>3 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>Kiev</wicri:noRegion></affiliation></author><author><name sortKey="Breiter, S" sort="Breiter, S" uniqKey="Breiter S" first="S." last="Breiter">S. Breiter</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, Słoneczna 36</s1><s2>60-286 Poznań</s2><s3>POL</s3><sZ>4 aut.</sZ></inist:fA14><country>Pologne</country><wicri:noRegion>60-286 Poznań</wicri:noRegion></affiliation></author><author><name sortKey="Burkhonov, O A" sort="Burkhonov, O A" uniqKey="Burkhonov O" first="O. A." last="Burkhonov">O. A. Burkhonov</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Ulugh Beg Astronomical Institute, Uzbek Academy of Sciences, Astronomicheskaya 33</s1><s2>Tashkent 100052</s2><s3>UZB</s3><sZ>5 aut.</sZ></inist:fA14><country>Ouzbékistan</country><wicri:noRegion>Tashkent 100052</wicri:noRegion></affiliation></author><author><name sortKey="Cooney, W" sort="Cooney, W" uniqKey="Cooney W" first="W." last="Cooney">W. Cooney</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Sonoita Research Observatory, 1442 E Roger Rd</s1><s2>Tuscon, AZ 85719</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>9 aut.</sZ><sZ>27 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Tuscon, AZ 85719</wicri:noRegion></affiliation></author><author><name sortKey="Fuller, V" sort="Fuller, V" uniqKey="Fuller V" first="V." last="Fuller">V. Fuller</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>Physics and Astronomy Department, Appalachian State University</s1><s2>Boone, NC 28608</s2><s3>USA</s3><sZ>7 aut.</sZ><sZ>20 aut.</sZ><sZ>29 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Boone, NC 28608</wicri:noRegion></affiliation></author><author><name sortKey="Gaftonyuk, N M" sort="Gaftonyuk, N M" uniqKey="Gaftonyuk N" first="N. M." last="Gaftonyuk">N. M. Gaftonyuk</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Crimean Astrophysical Observatory, Simeiz Department</s1><s2>Simeiz 98680</s2><s3>UKR</s3><sZ>8 aut.</sZ><sZ>23 aut.</sZ><sZ>24 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>Simeiz 98680</wicri:noRegion></affiliation></author><author><name sortKey="Gross, J" sort="Gross, J" uniqKey="Gross J" first="J." last="Gross">J. Gross</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Sonoita Research Observatory, 1442 E Roger Rd</s1><s2>Tuscon, AZ 85719</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>9 aut.</sZ><sZ>27 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Tuscon, AZ 85719</wicri:noRegion></affiliation></author><author><name sortKey="Inasaridze, R Ya" sort="Inasaridze, R Ya" uniqKey="Inasaridze R" first="R. Ya." last="Inasaridze">R. Ya. Inasaridze</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Kharadze Abastumani Astrophysical Observatory, Ilia State University, G.Tsereteli str. 3</s1><s2>Tbilisi 0162</s2><s3>GEO</s3><sZ>10 aut.</sZ><sZ>13 aut.</sZ></inist:fA14><country>Géorgie</country><wicri:noRegion>Tbilisi 0162</wicri:noRegion></affiliation></author><author><name sortKey="Kaasalainen, M" sort="Kaasalainen, M" uniqKey="Kaasalainen M" first="M." last="Kaasalainen">M. Kaasalainen</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Department of Mathematics, Tampere University of Technology, PO Box 553</s1><s2>33101 Tampere</s2><s3>FIN</s3><sZ>11 aut.</sZ><sZ>30 aut.</sZ></inist:fA14><country>Finlande</country><wicri:noRegion>33101 Tampere</wicri:noRegion></affiliation></author><author><name sortKey="Krugly, Yu N" sort="Krugly, Yu N" uniqKey="Krugly Y" first="Yu. N." last="Krugly">Yu. N. Krugly</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Institute of Astronomy of Kharkiv National University, Sumska str. 35</s1><s2>Kharkiv 61022</s2><s3>UKR</s3><sZ>12 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>Kharkiv 61022</wicri:noRegion></affiliation></author><author><name sortKey="Kvaratshelia, O I" sort="Kvaratshelia, O I" uniqKey="Kvaratshelia O" first="O. I." last="Kvaratshelia">O. I. Kvaratshelia</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>Kharadze Abastumani Astrophysical Observatory, Ilia State University, G.Tsereteli str. 3</s1><s2>Tbilisi 0162</s2><s3>GEO</s3><sZ>10 aut.</sZ><sZ>13 aut.</sZ></inist:fA14><country>Géorgie</country><wicri:noRegion>Tbilisi 0162</wicri:noRegion></affiliation></author><author><name sortKey="Litvinenko, E A" sort="Litvinenko, E A" uniqKey="Litvinenko E" first="E. A." last="Litvinenko">E. A. Litvinenko</name><affiliation wicri:level="1"><inist:fA14 i1="11"><s1>The Central (Pulkovo) Astronomical Observatory of the Russian Academy of Sciences, Pulkovskoye chaussee 65/1</s1><s2>St.-Petersburg 196140</s2><s3>RUS</s3><sZ>14 aut.</sZ></inist:fA14><country>Russie</country><wicri:noRegion>St.-Petersburg 196140</wicri:noRegion></affiliation></author><author><name sortKey="Macomber, B" sort="Macomber, B" uniqKey="Macomber B" first="B." last="Macomber">B. Macomber</name><affiliation wicri:level="1"><inist:fA14 i1="12"><s1>University of California at Berkeley, Department of Astronomy, 601 Campbell Hall</s1><s2>Berkeley, CA 94720</s2><s3>USA</s3><sZ>15 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Berkeley, CA 94720</wicri:noRegion></affiliation></author><author><name sortKey="Marchis, F" sort="Marchis, F" uniqKey="Marchis F" first="F." last="Marchis">F. Marchis</name><affiliation wicri:level="1"><inist:fA14 i1="12"><s1>University of California at Berkeley, Department of Astronomy, 601 Campbell Hall</s1><s2>Berkeley, CA 94720</s2><s3>USA</s3><sZ>15 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Berkeley, CA 94720</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>Carl Sagan Center, SETI institute, 189 Bernardo Av</s1><s2>Mountain View CA 94043</s2><s3>USA</s3><sZ>16 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Mountain View CA 94043</wicri:noRegion></affiliation></author><author><name sortKey="Molotov, I E" sort="Molotov, I E" uniqKey="Molotov I" first="I. E." last="Molotov">I. E. Molotov</name><affiliation wicri:level="1"><inist:fA14 i1="14"><s1>Keldysh Institute of Applied Mathematics, RAS, Miusskaya sq. 4</s1><s2>125047 Moscow</s2><s3>RUS</s3><sZ>17 aut.</sZ></inist:fA14><country>Russie</country><placeName><settlement type="city">Moscou</settlement><region>District fédéral central</region></placeName></affiliation></author><author><name sortKey="Oey, J" sort="Oey, J" uniqKey="Oey J" first="J." last="Oey">J. Oey</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>Kingsgrove Observatory, 23 Monaro Ave</s1><s2>Kingsgrove, NSW</s2><s3>AUS</s3><sZ>18 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Kingsgrove, NSW</wicri:noRegion></affiliation></author><author><name sortKey="Polishook, D" sort="Polishook, D" uniqKey="Polishook D" first="D." last="Polishook">D. Polishook</name><affiliation wicri:level="4"><inist:fA14 i1="16"><s1>Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology</s1><s2>Cambridge, MA 02139</s2><s3>USA</s3><sZ>19 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Cambridge (Massachusetts)</settlement><region type="state">Massachusetts</region></placeName><orgName type="university">Massachusetts Institute of Technology</orgName></affiliation></author><author><name sortKey="Pollock, J" sort="Pollock, J" uniqKey="Pollock J" first="J." last="Pollock">J. Pollock</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>Physics and Astronomy Department, Appalachian State University</s1><s2>Boone, NC 28608</s2><s3>USA</s3><sZ>7 aut.</sZ><sZ>20 aut.</sZ><sZ>29 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Boone, NC 28608</wicri:noRegion></affiliation></author><author><name sortKey="Pravec, P" sort="Pravec, P" uniqKey="Pravec P" first="P." last="Pravec">P. Pravec</name><affiliation wicri:level="1"><inist:fA14 i1="17"><s1>Ondřejov Observatory, AV ČR</s1><s2>251 65 Ondřejov</s2><s3>CZE</s3><sZ>21 aut.</sZ></inist:fA14><country>République tchèque</country><wicri:noRegion>251 65 Ondřejov</wicri:noRegion></affiliation></author><author><name sortKey="Sarneczky, K" sort="Sarneczky, K" uniqKey="Sarneczky K" first="K." last="Sarneczky">K. Sarneczky</name><affiliation wicri:level="1"><inist:fA14 i1="18"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO Box 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>22 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Hongrie</country><placeName><settlement type="city">Budapest</settlement><region nuts="2">Hongrie centrale</region></placeName></affiliation></author><author><name sortKey="Shevchenko, V G" sort="Shevchenko, V G" uniqKey="Shevchenko V" first="V. G." last="Shevchenko">V. G. Shevchenko</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Crimean Astrophysical Observatory, Simeiz Department</s1><s2>Simeiz 98680</s2><s3>UKR</s3><sZ>8 aut.</sZ><sZ>23 aut.</sZ><sZ>24 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>Simeiz 98680</wicri:noRegion></affiliation></author><author><name sortKey="Slyusarev, I" sort="Slyusarev, I" uniqKey="Slyusarev I" first="I." last="Slyusarev">I. Slyusarev</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Crimean Astrophysical Observatory, Simeiz Department</s1><s2>Simeiz 98680</s2><s3>UKR</s3><sZ>8 aut.</sZ><sZ>23 aut.</sZ><sZ>24 aut.</sZ></inist:fA14><country>Ukraine</country><wicri:noRegion>Simeiz 98680</wicri:noRegion></affiliation></author><author><name sortKey="Stephens, R" sort="Stephens, R" uniqKey="Stephens R" first="R." last="Stephens">R. Stephens</name><affiliation wicri:level="1"><inist:fA14 i1="19"><s1>Goat Mountain Astronomical Research Station, 11355 Mount Johnson Court</s1><s2>Rancho Cucamonga, CA 91737</s2><s3>USA</s3><sZ>25 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Rancho Cucamonga, CA 91737</wicri:noRegion></affiliation></author><author><name sortKey="Szabo, Gy" sort="Szabo, Gy" uniqKey="Szabo G" first="Gy." last="Szabo">Gy. Szabo</name><affiliation wicri:level="1"><inist:fA14 i1="18"><s1>Konkoly Observatory of the Hungarian Academy of Sciences, PO Box 67</s1><s2>1525 Budapest</s2><s3>HUN</s3><sZ>22 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Hongrie</country><placeName><settlement type="city">Budapest</settlement><region nuts="2">Hongrie centrale</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="20"><s1>Department of Experimental Physics, University of Szeged, Dóm tér 9</s1><s2>6720 Szeged</s2><s3>HUN</s3><sZ>26 aut.</sZ></inist:fA14><country>Hongrie</country><wicri:noRegion>6720 Szeged</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="23"><s1>ELTE Gao-Lendulet Research Group</s1><s2>9700 Szombathely</s2><s3>HUN</s3><sZ>26 aut.</sZ></inist:fA14><country>Hongrie</country><wicri:noRegion>ELTE Gao-Lendulet Research Group</wicri:noRegion></affiliation></author><author><name sortKey="Teffell, D" sort="Teffell, D" uniqKey="Teffell D" first="D." last="Teffell">D. Teffell</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Sonoita Research Observatory, 1442 E Roger Rd</s1><s2>Tuscon, AZ 85719</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>9 aut.</sZ><sZ>27 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Tuscon, AZ 85719</wicri:noRegion></affiliation></author><author><name sortKey="Vachier, F" sort="Vachier, F" uniqKey="Vachier F" first="F." last="Vachier">F. Vachier</name><affiliation wicri:level="1"><inist:fA14 i1="21"><s1>Institut de Mécanique Celeste et de Calcul des Éphémérides, Observatoire de Paris, UMR8028 CNRS, 77 Av. Denfert-Rochereau</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>28 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>75014 Paris</wicri:noRegion><placeName><settlement type="city">Paris</settlement><region type="région" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Vanderplate, Z" sort="Vanderplate, Z" uniqKey="Vanderplate Z" first="Z." last="Vanderplate">Z. Vanderplate</name><affiliation wicri:level="1"><inist:fA14 i1="06"><s1>Physics and Astronomy Department, Appalachian State University</s1><s2>Boone, NC 28608</s2><s3>USA</s3><sZ>7 aut.</sZ><sZ>20 aut.</sZ><sZ>29 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Boone, NC 28608</wicri:noRegion></affiliation></author><author><name sortKey="Viikinkoski, M" sort="Viikinkoski, M" uniqKey="Viikinkoski M" first="M." last="Viikinkoski">M. Viikinkoski</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Department of Mathematics, Tampere University of Technology, PO Box 553</s1><s2>33101 Tampere</s2><s3>FIN</s3><sZ>11 aut.</sZ><sZ>30 aut.</sZ></inist:fA14><country>Finlande</country><wicri:noRegion>33101 Tampere</wicri:noRegion></affiliation></author><author><name sortKey="Warner, B D" sort="Warner, B D" uniqKey="Warner B" first="B. D." last="Warner">B. D. Warner</name><affiliation wicri:level="1"><inist:fA14 i1="22"><s1>Palmer Divide Observatory, 17955 Bakers Farm Rd., Colorado Springs</s1><s2>CO 80908</s2><s3>USA</s3><sZ>31 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>CO 80908</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Astronomy and astrophysics : (Berlin. Print)</title><title level="j" type="abbreviated">Astron. astrophys. : (Berl., Print)</title><idno type="ISSN">0004-6361</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Astronomy and astrophysics : (Berlin. Print)</title><title level="j" type="abbreviated">Astron. astrophys. : (Berl., Print)</title><idno type="ISSN">0004-6361</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Asteroids</term><term>Data analysis</term><term>Light curves</term><term>Photometric observation</term><term>Photometry</term><term>Physical model</term><term>Planets</term><term>Rotation speed</term><term>Spin state</term><term>Sunlight</term><term>Thermal radiation</term><term>Torque</term><term>YORP effect</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Astéroïde</term><term>Effet YORP</term><term>Etat spin</term><term>Couple</term><term>Lumière solaire</term><term>Rayonnement thermique</term><term>Courbe lumière</term><term>Observation photométrique</term><term>Modèle physique</term><term>Vitesse rotation</term><term>Photométrie</term><term>Planète</term><term>Analyse donnée</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Context. The spin state of small asteroids can change on a long timescale by the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, the net torque that arises from anisotropically scattered sunlight and proper thermal radiation from an irregularly-shaped asteroid. The secular change in the rotation period caused by the YORP effect can be detected by analysis of asteroid photometric lightcurves. Aims. We analyzed photometric lightcurves of near-Earth asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger with the aim to detect possible deviations from the constant rotation caused by the YORP effect. Methods. We carried out new photometric observations of the three asteroids, combined the new lightcurves with archived data, and used the lightcurve inversion method to model the asteroid shape, pole direction, and rotation rate. The YORP effect was modeled as a linear change in the rotation rate in time dω/dt. Values of dω/dt derived from observations were compared with the values predicted by theory. Results. We derived physical models for all three asteroids. We had to model Eger as a nonconvex body because the convex model failed to fit the lightcurves observed at high phase angles. We probably detected the acceleration of the rotation rate of Eger dω/dt = (1.4 ± 0.6) x 10<sup>-8</sup> rad d<sup>-2</sup> (3σ error), which corresponds to a decrease in the rotation period by 4.2 ms yr<sup>-1</sup>. The photometry of Cerberus and Ra-Shalom was consistent with a constant-period model, and no secular change in the spin rate was detected. We could only constrain maximum values of |dω/dt| < 8 x 10<sup>-9</sup> rad d<sup>-2</sup> for Cerberus, and |dω/dt| < 3 x 10<sup>-8</sup> rad d<sup>-2</sup> for Ra-Shalom.</div></front></TEI><affiliations><list><country><li>Australie</li><li>Finlande</li><li>France</li><li>Géorgie</li><li>Hongrie</li><li>Ouzbékistan</li><li>Pologne</li><li>Russie</li><li>République tchèque</li><li>Ukraine</li><li>États-Unis</li></country><region><li>Bohême centrale</li><li>District fédéral central</li><li>Hongrie centrale</li><li>Massachusetts</li><li>Île-de-France</li></region><settlement><li>Budapest</li><li>Cambridge (Massachusetts)</li><li>Moscou</li><li>Paris</li><li>Prague</li></settlement><orgName><li>Massachusetts Institute of Technology</li></orgName></list><tree><country name="République tchèque"><region name="Bohême centrale"><name sortKey="Durech, J" sort="Durech, J" uniqKey="Durech J" first="J." last="Durech">J. Durech</name></region><name sortKey="Pravec, P" sort="Pravec, P" uniqKey="Pravec P" first="P." last="Pravec">P. Pravec</name><name sortKey="Vokrouhlicky, D" sort="Vokrouhlicky, D" uniqKey="Vokrouhlicky D" first="D." last="Vokrouhlicky">D. Vokrouhlicky</name></country><country name="Ukraine"><noRegion><name sortKey="Baransky, A R" sort="Baransky, A R" uniqKey="Baransky A" first="A. R." last="Baransky">A. R. Baransky</name></noRegion><name sortKey="Gaftonyuk, N M" sort="Gaftonyuk, N M" uniqKey="Gaftonyuk N" first="N. M." last="Gaftonyuk">N. M. Gaftonyuk</name><name sortKey="Krugly, Yu N" sort="Krugly, Yu N" uniqKey="Krugly Y" first="Yu. N." last="Krugly">Yu. N. Krugly</name><name sortKey="Shevchenko, V G" sort="Shevchenko, V G" uniqKey="Shevchenko V" first="V. G." last="Shevchenko">V. G. Shevchenko</name><name sortKey="Slyusarev, I" sort="Slyusarev, I" uniqKey="Slyusarev I" first="I." last="Slyusarev">I. Slyusarev</name></country><country name="Pologne"><noRegion><name sortKey="Breiter, S" sort="Breiter, S" uniqKey="Breiter S" first="S." last="Breiter">S. Breiter</name></noRegion></country><country name="Ouzbékistan"><noRegion><name sortKey="Burkhonov, O A" sort="Burkhonov, O A" uniqKey="Burkhonov O" first="O. A." last="Burkhonov">O. A. Burkhonov</name></noRegion></country><country name="États-Unis"><noRegion><name sortKey="Cooney, W" sort="Cooney, W" uniqKey="Cooney W" first="W." last="Cooney">W. Cooney</name></noRegion><name sortKey="Fuller, V" sort="Fuller, V" uniqKey="Fuller V" first="V." last="Fuller">V. Fuller</name><name sortKey="Gross, J" sort="Gross, J" uniqKey="Gross J" first="J." last="Gross">J. Gross</name><name sortKey="Macomber, B" sort="Macomber, B" uniqKey="Macomber B" first="B." last="Macomber">B. Macomber</name><name sortKey="Marchis, F" sort="Marchis, F" uniqKey="Marchis F" first="F." last="Marchis">F. Marchis</name><name sortKey="Marchis, F" sort="Marchis, F" uniqKey="Marchis F" first="F." last="Marchis">F. Marchis</name><name sortKey="Polishook, D" sort="Polishook, D" uniqKey="Polishook D" first="D." last="Polishook">D. Polishook</name><name sortKey="Pollock, J" sort="Pollock, J" uniqKey="Pollock J" first="J." last="Pollock">J. Pollock</name><name sortKey="Stephens, R" sort="Stephens, R" uniqKey="Stephens R" first="R." last="Stephens">R. Stephens</name><name sortKey="Teffell, D" sort="Teffell, D" uniqKey="Teffell D" first="D." last="Teffell">D. Teffell</name><name sortKey="Vanderplate, Z" sort="Vanderplate, Z" uniqKey="Vanderplate Z" first="Z." last="Vanderplate">Z. Vanderplate</name><name sortKey="Warner, B D" sort="Warner, B D" uniqKey="Warner B" first="B. D." last="Warner">B. D. Warner</name></country><country name="Géorgie"><noRegion><name sortKey="Inasaridze, R Ya" sort="Inasaridze, R Ya" uniqKey="Inasaridze R" first="R. Ya." last="Inasaridze">R. Ya. Inasaridze</name></noRegion><name sortKey="Kvaratshelia, O I" sort="Kvaratshelia, O I" uniqKey="Kvaratshelia O" first="O. I." last="Kvaratshelia">O. I. Kvaratshelia</name></country><country name="Finlande"><noRegion><name sortKey="Kaasalainen, M" sort="Kaasalainen, M" uniqKey="Kaasalainen M" first="M." last="Kaasalainen">M. Kaasalainen</name></noRegion><name sortKey="Viikinkoski, M" sort="Viikinkoski, M" uniqKey="Viikinkoski M" first="M." last="Viikinkoski">M. Viikinkoski</name></country><country name="Russie"><noRegion><name sortKey="Litvinenko, E A" sort="Litvinenko, E A" uniqKey="Litvinenko E" first="E. A." last="Litvinenko">E. A. Litvinenko</name></noRegion><name sortKey="Molotov, I E" sort="Molotov, I E" uniqKey="Molotov I" first="I. E." last="Molotov">I. E. Molotov</name></country><country name="Australie"><noRegion><name sortKey="Oey, J" sort="Oey, J" uniqKey="Oey J" first="J." last="Oey">J. Oey</name></noRegion></country><country name="Hongrie"><region name="Hongrie centrale"><name sortKey="Sarneczky, K" sort="Sarneczky, K" uniqKey="Sarneczky K" first="K." last="Sarneczky">K. Sarneczky</name></region><name sortKey="Szabo, Gy" sort="Szabo, Gy" uniqKey="Szabo G" first="Gy." last="Szabo">Gy. Szabo</name><name sortKey="Szabo, Gy" sort="Szabo, Gy" uniqKey="Szabo G" first="Gy." last="Szabo">Gy. Szabo</name><name sortKey="Szabo, Gy" sort="Szabo, Gy" uniqKey="Szabo G" first="Gy." last="Szabo">Gy. Szabo</name></country><country name="France"><region name="Île-de-France"><name sortKey="Vachier, F" sort="Vachier, F" uniqKey="Vachier F" first="F." last="Vachier">F. Vachier</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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|texte= Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger - search for the YORP effect
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