On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044

Autores
Bernandini, F.; de Martino, D.; Mukai, K.; Falanga, M.; Andruchow, Ileana; Bonnet Bidaud, J. M.; Masetti, N.; Gonzalez Buitrago, D. H.; Mouchet, M.; Tovmassian, G.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The INTEGRAL and Swift hard X-ray surveys have identified a large number of new sources, among which many are proposed as Cataclysmic Variables (CVs). Here, we present the first detailed study of three X-ray-selected CVs, Swift J1907.3−2050, IGR J12123−5802 and IGR J19552+0044 based on XMM–Newton, Suzaku, Swift observations and ground-based optical and archival (near-IR) nIR/IR data. Swift J1907.3−2050 is highly variable from hours to months–years at all wavelengths. No coherent X-ray pulses are detected but rather transient features. The X-ray spectrum reveals a multitemperature optically thin plasma absorbed by complex neutral material and a soft blackbody component arising from a small area. These characteristics are remarkably similar to those observed in magnetic CVs. A supra-solar abundance of nitrogen could arise from nuclear processed material from the donor star. Swift J1907.3−2050 could be a peculiar magnetic CV with the second longest (20.82 h) binary period. IGR J12123−5802 is variable in the X-rays on a time-scale of ≳7.6 h. No coherent pulsations are detected, but its spectral characteristics suggest that it could be a magnetic CV of the Intermediate Polar (IP) type. IGR J19552+0044 shows two X-ray periods, ∼1.38 h and ∼1.69 h and an X-ray spectrum characterized by a multitemperature plasma with little absorption. We derive a low accretion rate, consistent with a CV below the orbital period gap. Its peculiar nIR/IR spectrum suggests a contribution from cyclotron emission. It could either be a pre-polar or an IP with the lowest degree of asynchronism.
Fil: Bernandini, F.. Wayne State University; Estados Unidos
Fil: de Martino, D.. Osservatorio Astronomico di Capodimonte,; Italia
Fil: Mukai, K.. University of Maryland; Estados Unidos
Fil: Falanga, M.. International Space Science Institute; Suiza
Fil: Andruchow, Ileana. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - la Plata. Instituto de Astrofisica la Plata; Argentina
Fil: Bonnet Bidaud, J. M.. CEA Saclay; Francia
Fil: Masetti, N.. Universidad Nacional Autónoma de México; México
Fil: Gonzalez Buitrago, D. H.. Universidad Nacional Autónoma de México; México
Fil: Mouchet, M.. Université Paris Diderot - Paris 7; Francia
Fil: Tovmassian, G.. Universidad Nacional Autónoma de México; México
Materia
Cataclismic variables
White dwarfs
Swift J1212.3-580 6 (estrella)
X rays
Swift J1907.3-2050 (estrella)
IGR J19552+0044 (estrella)
WISE J19 5512.47+004536.6 (estrella)
X-ray surveys
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:11336/19876
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/19876
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044Bernandini, F.de Martino, D.Mukai, K.Falanga, M.Andruchow, IleanaBonnet Bidaud, J. M.Masetti, N.Gonzalez Buitrago, D. H.Mouchet, M.Tovmassian, G.Cataclismic variablesWhite dwarfsSwift J1212.3-580 6 (estrella)X raysSwift J1907.3-2050 (estrella)IGR J19552+0044 (estrella)WISE J19 5512.47+004536.6 (estrella)X-ray surveyshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The INTEGRAL and Swift hard X-ray surveys have identified a large number of new sources, among which many are proposed as Cataclysmic Variables (CVs). Here, we present the first detailed study of three X-ray-selected CVs, Swift J1907.3−2050, IGR J12123−5802 and IGR J19552+0044 based on XMM–Newton, Suzaku, Swift observations and ground-based optical and archival (near-IR) nIR/IR data. Swift J1907.3−2050 is highly variable from hours to months–years at all wavelengths. No coherent X-ray pulses are detected but rather transient features. The X-ray spectrum reveals a multitemperature optically thin plasma absorbed by complex neutral material and a soft blackbody component arising from a small area. These characteristics are remarkably similar to those observed in magnetic CVs. A supra-solar abundance of nitrogen could arise from nuclear processed material from the donor star. Swift J1907.3−2050 could be a peculiar magnetic CV with the second longest (20.82 h) binary period. IGR J12123−5802 is variable in the X-rays on a time-scale of ≳7.6 h. No coherent pulsations are detected, but its spectral characteristics suggest that it could be a magnetic CV of the Intermediate Polar (IP) type. IGR J19552+0044 shows two X-ray periods, ∼1.38 h and ∼1.69 h and an X-ray spectrum characterized by a multitemperature plasma with little absorption. We derive a low accretion rate, consistent with a CV below the orbital period gap. Its peculiar nIR/IR spectrum suggests a contribution from cyclotron emission. It could either be a pre-polar or an IP with the lowest degree of asynchronism.Fil: Bernandini, F.. Wayne State University; Estados UnidosFil: de Martino, D.. Osservatorio Astronomico di Capodimonte,; ItaliaFil: Mukai, K.. University of Maryland; Estados UnidosFil: Falanga, M.. International Space Science Institute; SuizaFil: Andruchow, Ileana. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - la Plata. Instituto de Astrofisica la Plata; ArgentinaFil: Bonnet Bidaud, J. M.. CEA Saclay; FranciaFil: Masetti, N.. Universidad Nacional Autónoma de México; MéxicoFil: Gonzalez Buitrago, D. H.. Universidad Nacional Autónoma de México; MéxicoFil: Mouchet, M.. Université Paris Diderot - Paris 7; FranciaFil: Tovmassian, G.. Universidad Nacional Autónoma de México; MéxicoOxford University Press2013-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/19876Bernandini, F.; de Martino, D.; Mukai, K.; Falanga, M.; Andruchow, Ileana; et al.; On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 435; 4; 11-2013; 2822-28340035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stt1434info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt1434info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:58:08Zoai:ri.conicet.gov.ar:11336/19876instacron: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:34982025-09-29 09:58:08.616CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
title On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
spellingShingle On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
Bernandini, F.
Cataclismic variables
White dwarfs
Swift J1212.3-580 6 (estrella)
X rays
Swift J1907.3-2050 (estrella)
IGR J19552+0044 (estrella)
WISE J19 5512.47+004536.6 (estrella)
X-ray surveys
title_short On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
title_full On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
title_fullStr On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
title_full_unstemmed On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
title_sort On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
dc.creator.none.fl_str_mv Bernandini, F.
de Martino, D.
Mukai, K.
Falanga, M.
Andruchow, Ileana
Bonnet Bidaud, J. M.
Masetti, N.
Gonzalez Buitrago, D. H.
Mouchet, M.
Tovmassian, G.
author Bernandini, F.
author_facet Bernandini, F.
de Martino, D.
Mukai, K.
Falanga, M.
Andruchow, Ileana
Bonnet Bidaud, J. M.
Masetti, N.
Gonzalez Buitrago, D. H.
Mouchet, M.
Tovmassian, G.
author_role author
author2 de Martino, D.
Mukai, K.
Falanga, M.
Andruchow, Ileana
Bonnet Bidaud, J. M.
Masetti, N.
Gonzalez Buitrago, D. H.
Mouchet, M.
Tovmassian, G.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Cataclismic variables
White dwarfs
Swift J1212.3-580 6 (estrella)
X rays
Swift J1907.3-2050 (estrella)
IGR J19552+0044 (estrella)
WISE J19 5512.47+004536.6 (estrella)
X-ray surveys
topic Cataclismic variables
White dwarfs
Swift J1212.3-580 6 (estrella)
X rays
Swift J1907.3-2050 (estrella)
IGR J19552+0044 (estrella)
WISE J19 5512.47+004536.6 (estrella)
X-ray surveys
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The INTEGRAL and Swift hard X-ray surveys have identified a large number of new sources, among which many are proposed as Cataclysmic Variables (CVs). Here, we present the first detailed study of three X-ray-selected CVs, Swift J1907.3−2050, IGR J12123−5802 and IGR J19552+0044 based on XMM–Newton, Suzaku, Swift observations and ground-based optical and archival (near-IR) nIR/IR data. Swift J1907.3−2050 is highly variable from hours to months–years at all wavelengths. No coherent X-ray pulses are detected but rather transient features. The X-ray spectrum reveals a multitemperature optically thin plasma absorbed by complex neutral material and a soft blackbody component arising from a small area. These characteristics are remarkably similar to those observed in magnetic CVs. A supra-solar abundance of nitrogen could arise from nuclear processed material from the donor star. Swift J1907.3−2050 could be a peculiar magnetic CV with the second longest (20.82 h) binary period. IGR J12123−5802 is variable in the X-rays on a time-scale of ≳7.6 h. No coherent pulsations are detected, but its spectral characteristics suggest that it could be a magnetic CV of the Intermediate Polar (IP) type. IGR J19552+0044 shows two X-ray periods, ∼1.38 h and ∼1.69 h and an X-ray spectrum characterized by a multitemperature plasma with little absorption. We derive a low accretion rate, consistent with a CV below the orbital period gap. Its peculiar nIR/IR spectrum suggests a contribution from cyclotron emission. It could either be a pre-polar or an IP with the lowest degree of asynchronism.
Fil: Bernandini, F.. Wayne State University; Estados Unidos
Fil: de Martino, D.. Osservatorio Astronomico di Capodimonte,; Italia
Fil: Mukai, K.. University of Maryland; Estados Unidos
Fil: Falanga, M.. International Space Science Institute; Suiza
Fil: Andruchow, Ileana. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - la Plata. Instituto de Astrofisica la Plata; Argentina
Fil: Bonnet Bidaud, J. M.. CEA Saclay; Francia
Fil: Masetti, N.. Universidad Nacional Autónoma de México; México
Fil: Gonzalez Buitrago, D. H.. Universidad Nacional Autónoma de México; México
Fil: Mouchet, M.. Université Paris Diderot - Paris 7; Francia
Fil: Tovmassian, G.. Universidad Nacional Autónoma de México; México
description The INTEGRAL and Swift hard X-ray surveys have identified a large number of new sources, among which many are proposed as Cataclysmic Variables (CVs). Here, we present the first detailed study of three X-ray-selected CVs, Swift J1907.3−2050, IGR J12123−5802 and IGR J19552+0044 based on XMM–Newton, Suzaku, Swift observations and ground-based optical and archival (near-IR) nIR/IR data. Swift J1907.3−2050 is highly variable from hours to months–years at all wavelengths. No coherent X-ray pulses are detected but rather transient features. The X-ray spectrum reveals a multitemperature optically thin plasma absorbed by complex neutral material and a soft blackbody component arising from a small area. These characteristics are remarkably similar to those observed in magnetic CVs. A supra-solar abundance of nitrogen could arise from nuclear processed material from the donor star. Swift J1907.3−2050 could be a peculiar magnetic CV with the second longest (20.82 h) binary period. IGR J12123−5802 is variable in the X-rays on a time-scale of ≳7.6 h. No coherent pulsations are detected, but its spectral characteristics suggest that it could be a magnetic CV of the Intermediate Polar (IP) type. IGR J19552+0044 shows two X-ray periods, ∼1.38 h and ∼1.69 h and an X-ray spectrum characterized by a multitemperature plasma with little absorption. We derive a low accretion rate, consistent with a CV below the orbital period gap. Its peculiar nIR/IR spectrum suggests a contribution from cyclotron emission. It could either be a pre-polar or an IP with the lowest degree of asynchronism.
publishDate 2013
dc.date.none.fl_str_mv 2013-11
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/11336/19876
Bernandini, F.; de Martino, D.; Mukai, K.; Falanga, M.; Andruchow, Ileana; et al.; On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 435; 4; 11-2013; 2822-2834
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/19876
identifier_str_mv Bernandini, F.; de Martino, D.; Mukai, K.; Falanga, M.; Andruchow, Ileana; et al.; On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 435; 4; 11-2013; 2822-2834
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://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stt1434
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt1434
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/pdf
application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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 13.070432

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