Size and Shape of Chariklo from Multi-epoch Stellar Occultations
Descripción del Articulo
E.M. acknowledges support from the Contrato de subvención 205-2014 Fondecyt—Concytec, Perú.
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | artículo |
| Fecha de Publicación: | 2017 |
| Institución: | Consejo Nacional de Ciencia Tecnología e Innovación |
| Repositorio: | CONCYTEC-Institucional |
| Lenguaje: | inglés |
| OAI Identifier: | oai:repositorio.concytec.gob.pe:20.500.12390/1062 |
| Enlace del recurso: | https://hdl.handle.net/20.500.12390/1062 https://doi.org/10.3847/1538-3881/aa8956 |
| Nivel de acceso: | acceso abierto |
| Materia: | stellar occultations ring reflectivity Bayesian approach https://purl.org/pe-repo/ocde/ford#1.03.00 |
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CONC_d25f469d4ca3d998ec38e814367b5831 |
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CONC |
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CONCYTEC-Institucional |
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4689 |
| dc.title.none.fl_str_mv |
Size and Shape of Chariklo from Multi-epoch Stellar Occultations |
| title |
Size and Shape of Chariklo from Multi-epoch Stellar Occultations |
| spellingShingle |
Size and Shape of Chariklo from Multi-epoch Stellar Occultations Leiva, R stellar occultations ring reflectivity Bayesian approach https://purl.org/pe-repo/ocde/ford#1.03.00 |
| title_short |
Size and Shape of Chariklo from Multi-epoch Stellar Occultations |
| title_full |
Size and Shape of Chariklo from Multi-epoch Stellar Occultations |
| title_fullStr |
Size and Shape of Chariklo from Multi-epoch Stellar Occultations |
| title_full_unstemmed |
Size and Shape of Chariklo from Multi-epoch Stellar Occultations |
| title_sort |
Size and Shape of Chariklo from Multi-epoch Stellar Occultations |
| author |
Leiva, R |
| author_facet |
Leiva, R Sicardy, B Camargo, JIB Ortiz, JL Desmars, J Berard, D Lellouch, E Meza, E Kervella, P Snodgrass, C Duffard, R Morales, N Gomes-Junior, AR Benedetti-Rossi, G Vieira-Martins, R Braga-Ribas, F Assafin, M Morgado, BE Colas, F De Witt, C Sickafoose, AA Breytenbach, H Dauvergne, JL Schoenau, P Maquet, L Bath, KL Bode, HJ Cool, A Lade, B Kerr, S Herald, D |
| author_role |
author |
| author2 |
Sicardy, B Camargo, JIB Ortiz, JL Desmars, J Berard, D Lellouch, E Meza, E Kervella, P Snodgrass, C Duffard, R Morales, N Gomes-Junior, AR Benedetti-Rossi, G Vieira-Martins, R Braga-Ribas, F Assafin, M Morgado, BE Colas, F De Witt, C Sickafoose, AA Breytenbach, H Dauvergne, JL Schoenau, P Maquet, L Bath, KL Bode, HJ Cool, A Lade, B Kerr, S Herald, D |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.contributor.author.fl_str_mv |
Leiva, R Sicardy, B Camargo, JIB Ortiz, JL Desmars, J Berard, D Lellouch, E Meza, E Kervella, P Snodgrass, C Duffard, R Morales, N Gomes-Junior, AR Benedetti-Rossi, G Vieira-Martins, R Braga-Ribas, F Assafin, M Morgado, BE Colas, F De Witt, C Sickafoose, AA Breytenbach, H Dauvergne, JL Schoenau, P Maquet, L Bath, KL Bode, HJ Cool, A Lade, B Kerr, S Herald, D |
| dc.subject.none.fl_str_mv |
stellar occultations |
| topic |
stellar occultations ring reflectivity Bayesian approach https://purl.org/pe-repo/ocde/ford#1.03.00 |
| dc.subject.es_PE.fl_str_mv |
ring reflectivity Bayesian approach |
| dc.subject.ocde.none.fl_str_mv |
https://purl.org/pe-repo/ocde/ford#1.03.00 |
| description |
E.M. acknowledges support from the Contrato de subvención 205-2014 Fondecyt—Concytec, Perú. |
| publishDate |
2017 |
| dc.date.accessioned.none.fl_str_mv |
2024-05-30T23:13:38Z |
| dc.date.available.none.fl_str_mv |
2024-05-30T23:13:38Z |
| dc.date.issued.fl_str_mv |
2017 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.uri.none.fl_str_mv |
https://hdl.handle.net/20.500.12390/1062 |
| dc.identifier.doi.none.fl_str_mv |
https://doi.org/10.3847/1538-3881/aa8956 |
| dc.identifier.isi.none.fl_str_mv |
411618000002 |
| url |
https://hdl.handle.net/20.500.12390/1062 https://doi.org/10.3847/1538-3881/aa8956 |
| identifier_str_mv |
411618000002 |
| dc.language.iso.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.ispartof.none.fl_str_mv |
Astronomical Journal |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
IOP |
| publisher.none.fl_str_mv |
IOP |
| dc.source.none.fl_str_mv |
reponame:CONCYTEC-Institucional instname:Consejo Nacional de Ciencia Tecnología e Innovación instacron:CONCYTEC |
| instname_str |
Consejo Nacional de Ciencia Tecnología e Innovación |
| instacron_str |
CONCYTEC |
| institution |
CONCYTEC |
| reponame_str |
CONCYTEC-Institucional |
| collection |
CONCYTEC-Institucional |
| repository.name.fl_str_mv |
Repositorio Institucional CONCYTEC |
| repository.mail.fl_str_mv |
repositorio@concytec.gob.pe |
| _version_ |
1839175609699270656 |
| spelling |
Publicationrp02554500rp02569500rp02574500rp02549500rp02573500rp02506500rp02762500rp02546500rp02532500rp03019600rp02505500rp01473500rp03018600rp02518500rp02511500rp02543500rp02517500rp02844500rp00664500rp03020600rp02536500rp02533500rp02529500rp02541500rp02530500rp02562500rp02534500rp02556500rp02510500rp02524500rp02514500Leiva, RSicardy, BCamargo, JIBOrtiz, JLDesmars, JBerard, DLellouch, EMeza, EKervella, PSnodgrass, CDuffard, RMorales, NGomes-Junior, ARBenedetti-Rossi, GVieira-Martins, RBraga-Ribas, FAssafin, MMorgado, BEColas, FDe Witt, CSickafoose, AABreytenbach, HDauvergne, JLSchoenau, PMaquet, LBath, KLBode, HJCool, ALade, BKerr, SHerald, D2024-05-30T23:13:38Z2024-05-30T23:13:38Z2017https://hdl.handle.net/20.500.12390/1062https://doi.org/10.3847/1538-3881/aa8956411618000002E.M. acknowledges support from the Contrato de subvención 205-2014 Fondecyt—Concytec, Perú.We use data from five stellar occultations observed between 2013 and 2016 to constrain Chariklo's size and shape, and the ring reflectivity. We consider four possible models for Chariklo (sphere, Maclaurin spheroid, triaxial ellipsoid, and Jacobi ellipsoid), and we use a Bayesian approach to estimate the corresponding parameters. The spherical model has a radius R = 129 ± 3 km. The Maclaurin model has equatorial and polar radii $a=b={143}_{-6}^{+3}\,\mathrm{km}$ and $c={96}_{-4}^{+14}\,\mathrm{km}$, respectively, with density ${970}_{-180}^{+300}\,\mathrm{kg}\,{{\rm{m}}}^{-3}$. The ellipsoidal model has semiaxes $a={148}_{-4}^{+6}\,\mathrm{km}$, $b={132}_{-5}^{+6}\,\mathrm{km}$, and $c={102}_{-8}^{+10}\,\mathrm{km}$. Finally, the Jacobi model has semiaxes a = 157 ± 4 km, b = 139 ± 4 km, and c = 86 ± 1 km, and density ${796}_{-4}^{+2}\,\mathrm{kg}\,{{\rm{m}}}^{-3}$. Depending on the model, we obtain topographic features of 6–11 km, typical of Saturn icy satellites with similar size and density. We constrain Chariklo's geometric albedo between 3.1% (sphere) and 4.9% (ellipsoid), while the ring I/F reflectivity is less constrained between 0.6% (Jacobi) and 8.9% (sphere). The ellipsoid model explains both the optical light curve and the long-term photometry variation of the system, giving a plausible value for the geometric albedo of the ring particles of 10%–15%. The derived mass of Chariklo of 6–8 × 1018 kg places the rings close to 3:1 resonance between the ring mean motion and Chariklo's rotation period.Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica - ConcytecengIOPAstronomical Journalinfo:eu-repo/semantics/openAccessstellar occultationsring reflectivity-1Bayesian approach-1https://purl.org/pe-repo/ocde/ford#1.03.00-1Size and Shape of Chariklo from Multi-epoch Stellar Occultationsinfo:eu-repo/semantics/articlereponame:CONCYTEC-Institucionalinstname:Consejo Nacional de Ciencia Tecnología e Innovacióninstacron:CONCYTEC#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#20.500.12390/1062oai:repositorio.concytec.gob.pe:20.500.12390/10622024-05-30 15:23:38.779http://purl.org/coar/access_right/c_14cbinfo:eu-repo/semantics/closedAccessmetadata only accesshttps://repositorio.concytec.gob.peRepositorio Institucional CONCYTECrepositorio@concytec.gob.pe#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#<Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="7a491b3a-737d-49eb-8485-4f842b9ec55f"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Size and Shape of Chariklo from Multi-epoch Stellar Occultations</Title> <PublishedIn> <Publication> <Title>Astronomical Journal</Title> </Publication> </PublishedIn> <PublicationDate>2017</PublicationDate> <DOI>https://doi.org/10.3847/1538-3881/aa8956</DOI> <ISI-Number>411618000002</ISI-Number> <Authors> <Author> <DisplayName>Leiva, R</DisplayName> <Person id="rp02554" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Sicardy, B</DisplayName> <Person id="rp02569" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Camargo, JIB</DisplayName> <Person id="rp02574" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Ortiz, JL</DisplayName> <Person id="rp02549" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Desmars, J</DisplayName> <Person id="rp02573" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Berard, D</DisplayName> <Person id="rp02506" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Lellouch, E</DisplayName> <Person id="rp02762" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Meza, E</DisplayName> <Person id="rp02546" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Kervella, P</DisplayName> <Person id="rp02532" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Snodgrass, C</DisplayName> <Person id="rp03019" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Duffard, R</DisplayName> <Person id="rp02505" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Morales, N</DisplayName> <Person id="rp01473" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Gomes-Junior, AR</DisplayName> <Person id="rp03018" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Benedetti-Rossi, G</DisplayName> <Person id="rp02518" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Vieira-Martins, R</DisplayName> <Person id="rp02511" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Braga-Ribas, F</DisplayName> <Person id="rp02543" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Assafin, M</DisplayName> <Person id="rp02517" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Morgado, BE</DisplayName> <Person id="rp02844" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Colas, F</DisplayName> <Person id="rp00664" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>De Witt, C</DisplayName> <Person id="rp03020" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Sickafoose, AA</DisplayName> <Person id="rp02536" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Breytenbach, H</DisplayName> <Person id="rp02533" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Dauvergne, JL</DisplayName> <Person id="rp02529" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Schoenau, P</DisplayName> <Person id="rp02541" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Maquet, L</DisplayName> <Person id="rp02530" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Bath, KL</DisplayName> <Person id="rp02562" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Bode, HJ</DisplayName> <Person id="rp02534" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Cool, A</DisplayName> <Person id="rp02556" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Lade, B</DisplayName> <Person id="rp02510" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Kerr, S</DisplayName> <Person id="rp02524" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> <Author> <DisplayName>Herald, D</DisplayName> <Person id="rp02514" /> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>IOP</DisplayName> <OrgUnit /> </Publisher> </Publishers> <Keyword>stellar occultations</Keyword> <Keyword>ring reflectivity</Keyword> <Keyword>Bayesian approach</Keyword> <Abstract>We use data from five stellar occultations observed between 2013 and 2016 to constrain Chariklo's size and shape, and the ring reflectivity. We consider four possible models for Chariklo (sphere, Maclaurin spheroid, triaxial ellipsoid, and Jacobi ellipsoid), and we use a Bayesian approach to estimate the corresponding parameters. The spherical model has a radius R = 129 ± 3 km. The Maclaurin model has equatorial and polar radii $a=b={143}_{-6}^{+3}\,\mathrm{km}$ and $c={96}_{-4}^{+14}\,\mathrm{km}$, respectively, with density ${970}_{-180}^{+300}\,\mathrm{kg}\,{{\rm{m}}}^{-3}$. The ellipsoidal model has semiaxes $a={148}_{-4}^{+6}\,\mathrm{km}$, $b={132}_{-5}^{+6}\,\mathrm{km}$, and $c={102}_{-8}^{+10}\,\mathrm{km}$. Finally, the Jacobi model has semiaxes a = 157 ± 4 km, b = 139 ± 4 km, and c = 86 ± 1 km, and density ${796}_{-4}^{+2}\,\mathrm{kg}\,{{\rm{m}}}^{-3}$. Depending on the model, we obtain topographic features of 6–11 km, typical of Saturn icy satellites with similar size and density. We constrain Chariklo's geometric albedo between 3.1% (sphere) and 4.9% (ellipsoid), while the ring I/F reflectivity is less constrained between 0.6% (Jacobi) and 8.9% (sphere). The ellipsoid model explains both the optical light curve and the long-term photometry variation of the system, giving a plausible value for the geometric albedo of the ring particles of 10%–15%. The derived mass of Chariklo of 6–8 × 1018 kg places the rings close to 3:1 resonance between the ring mean motion and Chariklo's rotation period.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication> -1 |
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13.439101 |
Nota importante:
La información contenida en este registro es de entera responsabilidad de la institución que gestiona el repositorio institucional donde esta contenido este documento o set de datos. El CONCYTEC no se hace responsable por los contenidos (publicaciones y/o datos) accesibles a través del Repositorio Nacional Digital de Ciencia, Tecnología e Innovación de Acceso Abierto (ALICIA).
La información contenida en este registro es de entera responsabilidad de la institución que gestiona el repositorio institucional donde esta contenido este documento o set de datos. El CONCYTEC no se hace responsable por los contenidos (publicaciones y/o datos) accesibles a través del Repositorio Nacional Digital de Ciencia, Tecnología e Innovación de Acceso Abierto (ALICIA).
