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Uvbyβ photometry of active-chromosphere binaries .1. The system TZ Coronae Borealis

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dc.contributor.authorGiménez, A.
dc.contributor.authorBallester, J. L.
dc.contributor.authorReglero, V.
dc.contributor.authorFernández Figueroa, María José
dc.contributor.authorCastro Rubio, Elisa De
dc.date.accessioned2023-06-21T02:09:08Z
dc.date.available2023-06-21T02:09:08Z
dc.date.issued1986-07
dc.description© American Astronomical Society. We want to express our gratitude to the staff of the Obser­vatory of Sierra Nevada, operated by the Instituto de Astro­física de Andalucía (CSIC), for their help during the obser­vational campaign. This work has been supported by the Spanish Comisión Asesora de Investigación Científica y Técnica (CAICYT No. 2254/83).
dc.description.abstractSimultaneous uvby and Hβ photometry of thee noneclipsing double-lined spectroscopic binary TZ CrB, an active binary system with almost unevolved components, is presented. A small amplitude distortion wave (0.012 mag in y) has been found with maximum light at phase ∽0.75. No variations in color or the βindex during the orbital cycle have been detected within the precision of the observations. The resulting color indices in the standard uvby system allow the estimation of some basic stellar parameters, such as the average effective temperature ∽6000 K and the stellar radii of the component stars ∽1.1 R_⨀. These results, together with available spectroscopic data, permit a consistent picture for this interesting binary to be obtained.
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipComisión Asesora de Investigación Científica y Técnica (CAICYT), España
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/32901
dc.identifier.doi10.1086/114144
dc.identifier.issn0004-6256
dc.identifier.officialurlhttp://dx.doi.org/10.1086/114144
dc.identifier.relatedurlhttp://adsabs.harvard.edu/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/64987
dc.issue.number1
dc.journal.titleAstronomical journal
dc.language.isoeng
dc.page.final135
dc.page.initial131
dc.publisherIOP Publishing ltd
dc.relation.projectID2254/83
dc.rights.accessRightsopen access
dc.subject.cdu52
dc.subject.keywordBinary stars
dc.subject.keywordH beta line
dc.subject.keywordStellar activity
dc.subject.keywordStellar spectrophotometry
dc.subject.keywordUbv spectra
dc.subject.keywordChromosphere
dc.subject.keywordLight curve
dc.subject.keywordStellar color
dc.subject.ucmAstrofísica
dc.subject.ucmAstronomía (Física)
dc.titleUvbyβ photometry of active-chromosphere binaries .1. The system TZ Coronae Borealis
dc.typejournal article
dc.volume.number92
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relation.isAuthorOfPublication.latestForDiscovery69d74cdf-f618-484d-b812-aabbd99a993c

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