Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap

Autores
Dai, Z. B.; Qian, S. B.; Fernandez Lajus, Eduardo Eusebio; Baume, Gustavo Luis
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Four new CCD eclipse timings of the white dwarf for polar UZ Fornacis and six updated CCD mid-eclipse times for SW-Sex-type nova-like V348 Puppis are obtained. Detailed O–C analyses are made for both cataclysmic variables (CVs) inside the period gap. Orbital periodincreases at a rate of 2.63(±0.58) × 10−11 s s−1 for UZ For and 5.8(±1.9) × 10−12 s s−1 for V348 Pup, respectively, are discovered in their new O–C diagrams. However, conservative mass transfer from the secondary to the massive white dwarf cannot explain the observedorbital period increases for both CVs, which are regarded as part of modulations at longer periods. Moreover, the O–C diagram of UZ For shows a possible cyclical change with a period of ∼23.4(±5.1) yr. To explain the observed cyclical period changes in UZ For, both mechanisms of magnetic activity cycles in late-type secondaries and the light travel-time effect are regarded as probable causes. Not only does the modulation period of 23.4 yr obey the empirical correlation between Pmod and , but also the estimated fractional period change P/P ∼ 7.3×10−7 displays a behaviour similar to that of CVs below the period gap. On the other hand, a calculation for the light travel-time effect implies with a high confidence level that the tertiary component in UZ For may be a brown dwarf, when the orbital inclination of the third body is larger than 16◦.
Fil: Dai, Z. B.. Chinese Academy of Sciences; República de China
Fil: Qian, S. B.. Chinese Academy of Sciences; República de China
Fil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Baume, Gustavo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Materia
binaries: eclipsing
stars: individual: UZ For
stars: individual: V348 Pup
novae, cataclysmic variables
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/278141
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/278141
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gapDai, Z. B.Qian, S. B.Fernandez Lajus, Eduardo EusebioBaume, Gustavo Luisbinaries: eclipsingstars: individual: UZ Forstars: individual: V348 Pupnovae, cataclysmic variableshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Four new CCD eclipse timings of the white dwarf for polar UZ Fornacis and six updated CCD mid-eclipse times for SW-Sex-type nova-like V348 Puppis are obtained. Detailed O–C analyses are made for both cataclysmic variables (CVs) inside the period gap. Orbital periodincreases at a rate of 2.63(±0.58) × 10−11 s s−1 for UZ For and 5.8(±1.9) × 10−12 s s−1 for V348 Pup, respectively, are discovered in their new O–C diagrams. However, conservative mass transfer from the secondary to the massive white dwarf cannot explain the observedorbital period increases for both CVs, which are regarded as part of modulations at longer periods. Moreover, the O–C diagram of UZ For shows a possible cyclical change with a period of ∼23.4(±5.1) yr. To explain the observed cyclical period changes in UZ For, both mechanisms of magnetic activity cycles in late-type secondaries and the light travel-time effect are regarded as probable causes. Not only does the modulation period of 23.4 yr obey the empirical correlation between Pmod and , but also the estimated fractional period change P/P ∼ 7.3×10−7 displays a behaviour similar to that of CVs below the period gap. On the other hand, a calculation for the light travel-time effect implies with a high confidence level that the tertiary component in UZ For may be a brown dwarf, when the orbital inclination of the third body is larger than 16◦.Fil: Dai, Z. B.. Chinese Academy of Sciences; República de ChinaFil: Qian, S. B.. Chinese Academy of Sciences; República de ChinaFil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Baume, Gustavo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaWiley Blackwell Publishing, Inc2010-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/zipapplication/pdfhttp://hdl.handle.net/11336/278141Dai, Z. B.; Qian, S. B.; Fernandez Lajus, Eduardo Eusebio; Baume, Gustavo Luis; Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 409; 3; 12-2010; 1195-12020035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2966.2010.17384.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2010.17384.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T14:39:13Zoai:ri.conicet.gov.ar:11336/278141instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-12-23 14:39:14.075CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap
title Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap
spellingShingle Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap
Dai, Z. B.
binaries: eclipsing
stars: individual: UZ For
stars: individual: V348 Pup
novae, cataclysmic variables
title_short Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap
title_full Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap
title_fullStr Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap
title_full_unstemmed Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap
title_sort Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap
dc.creator.none.fl_str_mv Dai, Z. B.
Qian, S. B.
Fernandez Lajus, Eduardo Eusebio
Baume, Gustavo Luis
author Dai, Z. B.
author_facet Dai, Z. B.
Qian, S. B.
Fernandez Lajus, Eduardo Eusebio
Baume, Gustavo Luis
author_role author
author2 Qian, S. B.
Fernandez Lajus, Eduardo Eusebio
Baume, Gustavo Luis
author2_role author
author
author
dc.subject.none.fl_str_mv binaries: eclipsing
stars: individual: UZ For
stars: individual: V348 Pup
novae, cataclysmic variables
topic binaries: eclipsing
stars: individual: UZ For
stars: individual: V348 Pup
novae, cataclysmic variables
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Four new CCD eclipse timings of the white dwarf for polar UZ Fornacis and six updated CCD mid-eclipse times for SW-Sex-type nova-like V348 Puppis are obtained. Detailed O–C analyses are made for both cataclysmic variables (CVs) inside the period gap. Orbital periodincreases at a rate of 2.63(±0.58) × 10−11 s s−1 for UZ For and 5.8(±1.9) × 10−12 s s−1 for V348 Pup, respectively, are discovered in their new O–C diagrams. However, conservative mass transfer from the secondary to the massive white dwarf cannot explain the observedorbital period increases for both CVs, which are regarded as part of modulations at longer periods. Moreover, the O–C diagram of UZ For shows a possible cyclical change with a period of ∼23.4(±5.1) yr. To explain the observed cyclical period changes in UZ For, both mechanisms of magnetic activity cycles in late-type secondaries and the light travel-time effect are regarded as probable causes. Not only does the modulation period of 23.4 yr obey the empirical correlation between Pmod and , but also the estimated fractional period change P/P ∼ 7.3×10−7 displays a behaviour similar to that of CVs below the period gap. On the other hand, a calculation for the light travel-time effect implies with a high confidence level that the tertiary component in UZ For may be a brown dwarf, when the orbital inclination of the third body is larger than 16◦.
Fil: Dai, Z. B.. Chinese Academy of Sciences; República de China
Fil: Qian, S. B.. Chinese Academy of Sciences; República de China
Fil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Baume, Gustavo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
description Four new CCD eclipse timings of the white dwarf for polar UZ Fornacis and six updated CCD mid-eclipse times for SW-Sex-type nova-like V348 Puppis are obtained. Detailed O–C analyses are made for both cataclysmic variables (CVs) inside the period gap. Orbital periodincreases at a rate of 2.63(±0.58) × 10−11 s s−1 for UZ For and 5.8(±1.9) × 10−12 s s−1 for V348 Pup, respectively, are discovered in their new O–C diagrams. However, conservative mass transfer from the secondary to the massive white dwarf cannot explain the observedorbital period increases for both CVs, which are regarded as part of modulations at longer periods. Moreover, the O–C diagram of UZ For shows a possible cyclical change with a period of ∼23.4(±5.1) yr. To explain the observed cyclical period changes in UZ For, both mechanisms of magnetic activity cycles in late-type secondaries and the light travel-time effect are regarded as probable causes. Not only does the modulation period of 23.4 yr obey the empirical correlation between Pmod and , but also the estimated fractional period change P/P ∼ 7.3×10−7 displays a behaviour similar to that of CVs below the period gap. On the other hand, a calculation for the light travel-time effect implies with a high confidence level that the tertiary component in UZ For may be a brown dwarf, when the orbital inclination of the third body is larger than 16◦.
publishDate 2010
dc.date.none.fl_str_mv 2010-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/278141
Dai, Z. B.; Qian, S. B.; Fernandez Lajus, Eduardo Eusebio; Baume, Gustavo Luis; Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 409; 3; 12-2010; 1195-1202
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/278141
identifier_str_mv Dai, Z. B.; Qian, S. B.; Fernandez Lajus, Eduardo Eusebio; Baume, Gustavo Luis; Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 409; 3; 12-2010; 1195-1202
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2966.2010.17384.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2010.17384.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/zip
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.952241

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