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Optical spectroscopy and X-ray observations of the D-type symbiotic star EF Aql

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dc.contributor.authorStoyanov, K. A.
dc.contributor.authorIlkiewicz, K.
dc.contributor.authorMikołajewska, J.
dc.contributor.authorMukai, K.
dc.contributor.authorMartí, J
dc.contributor.authorLatev, G
dc.contributor.authorBoeva, S.
dc.contributor.authorZamanov, R. K.
dc.contributor.authorLuna, Gerardo Juan Manuel
dc.date.accessioned2025-01-30T15:57:44Z
dc.date.available2025-01-30T15:57:44Z
dc.date.issued2020
dc.description.abstractWe performed high-resolution optical spectroscopy and X-ray observations of the recently identified Mira-type symbiotic star EF Aql. Based on high-resolution optical spectroscopy obtained with the Southern African Large Telescope (SALT), we determine the temperature (∼55 000 K) and the luminosity (∼5.3 L⊙) of the hot component in the system. The heliocentric radial velocities of the emission lines in the spectra reveal possible stratification of the chemical elements.We also estimate the mass-loss rate of the Mira donor star. Our Swift observation did not detect EF Aql in X-rays. The upper limit of the X-ray observations is 10-12 erg cm-2 s-1, whichmeans that EF Aql is consistent with the faintestX-ray systems detected so far. Otherwise we detected it with the UltraViolet and Optical Telescope (UVOT) instrument with an average UVM2 magnitude of 14.05. During the exposure, EF Aql became approximately 0.2 UVM2 magnitudes fainter. The periodogram analysis of the V-band data reveals an improved period of 320.4 ± 0.3 d caused by the pulsations of the Mira-type donor star.
dc.description.filiationFil: Stoyanov, K. A.. Bulgarian Academy of Sciences; Bulgaria
dc.description.filiationFil: Ilkiewicz, K.. Polish Academy of Sciences; Polonia
dc.description.filiationFil: Luna, Gerardo Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad Nacional de Hurlingham. Instituto de Tecnología e Ingeniería; Argentina
dc.description.filiationFil: Mikołajewska, J.. Polish Academy of Sciences; Polonia
dc.description.filiationFil: Mukai, K.. National Aeronautics and Space Administration; Estados Unidos. University of Maryland; Estados Unidos
dc.description.filiationFil: Martí, J.. Universidad de Jaén; España
dc.description.filiationFil: Latev, G.. Bulgarian Academy of Sciences; Bulgaria
dc.description.filiationFil: Boeva, S.. Bulgarian Academy of Sciences; Bulgaria
dc.description.filiationFil: Zamanov, R. K.. Bulgarian Academy of Sciences; Bulgaria
dc.format.mimetypeapplication/pdf
dc.identifier.citationStoyanov, K. A.; Ilkiewicz, K.; Luna, Gerardo Juan Manuel; Mikołajewska, J.; Mukai, K.; et al. (2020) Optical spectroscopy and X-ray observations of the D-type symbiotic star EF Aql. Monthly Notices of the Royal Astronomical Society, 495 (1) pp. 1461-1464
dc.identifier.doihttp://dx.doi.org/10.1093/mnras/staa1310
dc.identifier.issn0035-8711
dc.identifier.urihttps://academic.oup.com/mnras/article/495/1/1461/5836725
dc.identifier.urihttps://repositorio.unahur.edu.ar/handle/123456789/530
dc.journal.number1
dc.journal.pagination1461-1464
dc.journal.titleMonthly Notices of the Royal Astronomical Society
dc.journal.volume495
dc.language.isoeng
dc.publisherWiley Blackwell
dc.rights.licenseinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subject.ocde1Ciencias Exactas y Naturales
dc.subject.ocde2Ciencias Físicas
dc.subject.unahurCiencias Básicas y Aplicadas
dc.titleOptical spectroscopy and X-ray observations of the D-type symbiotic star EF Aql
dc.typeinfo:eu-repo/semantics/article
dc.type.oaireinfo:eu-repo/semantics/article
dc.type.snrdinfo:ar-repo/semantics/artículo
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublication780246c8-d7fb-43ba-b6f5-1ef1f4e7f242
relation.isAuthorOfPublication.latestForDiscovery780246c8-d7fb-43ba-b6f5-1ef1f4e7f242
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