Searching for new yellow symbiotic stars: Positive identification of StHα63

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dc.contributor.authorBaella, Nobar
dc.contributor.authorPereira, C. B.
dc.contributor.authorMiranda, L. F.
dc.contributor.authorAlvarez-Candal, A.
dc.date.accessioned2018-08-08T17:51:10Z
dc.date.available2018-08-08T17:51:10Z
dc.date.issued2016-02-05
dc.description.abstractYellow symbiotic stars are useful targets to probe whether mass transfer has happened in these binary systems. However, the number of known yellow symbiotic stars is very scarce. We report spectroscopic observations of five candidate yellow symbiotic stars selected by their position in the 2MASS (J-H) vs. (H-Ks) diagram and included in some emission-line catalogs. Among the five candidates, only StHa63 is identified as a new yellow symbiotic star because of its spectrum and its position in the [TiO]1-[TiO]2 diagram that indicates a K4-K6 spectral type. In addition, the derived electron density (10E8.4 cm-3) and several emission line intensity ratios provide further support for that classification. The other four candidates are rejected as symbiotic stars because three of them actually do not show emission lines and the fourth one shows only Balmer emission lines. We also found that the WISE W3-W4 index clearly separates normal K-giants from yellow symbiotic stars and, therefore, can be used as an additional tool to select candidate yellow symbiotic stars.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationBaella, N., Pereira, C. B., Miranda, L. F., & Alvarez-Candal, A. (2016). Searching for new yellow symbiotic stars: Positive identification of StHα63.==$The Astronomical Journal, 151$==(4), 1-6. https://doi.org/10.3847/0004-6256/151/4/100es_ES
dc.identifier.doihttps://doi.org/10.3847/0004-6256/151/4/100es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalThe Astrophysical Journales_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2324
dc.language.isoenges_ES
dc.publisherAmerican Astronomical Societyes_ES
dc.relation.ispartofurn:issn:0004-6256
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectBinaries: symbiotices_ES
dc.subjectStars: fundamental parameterses_ES
dc.subjectStars: individual (StHα63)es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleSearching for new yellow symbiotic stars: Positive identification of StHα63es_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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