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dc.creatorShi, Guang-
dc.creatorQian, Sheng Bang-
dc.creatorFernandez Lajus, Eduardo Eusebio-
dc.date2017-01-05T15:21:48Z-
dc.date2017-01-05T15:21:48Z-
dc.date2014-02-
dc.date2017-01-02T18:36:39Z-
dc.date.accessioned2019-04-29T15:56:02Z-
dc.date.available2019-04-29T15:56:02Z-
dc.identifierShi, Guang; Qian, Sheng Bang; Fernandez Lajus, Eduardo Eusebio; The confirmation and revision on the orbital period change of the possible type Ia supernova progenitor V617 Sagittarii; Astronomical Soc Japan; Publications Of The Astronomical Society Of Japan; 66; 1; 2-2014; 1-5-
dc.identifier0004-6264-
dc.identifierhttp://hdl.handle.net/11336/10868-
dc.identifier2053-051X-
dc.identifier.urihttp://rodna.bn.gov.ar:8080/jspui/handle/bnmm/305674-
dc.descriptionThis work reports new photometric results of eclipsing cataclysmic variable V617 Sagittarii (V617 Sgr). We analyzed the orbital period change of V617 Sgr, by employing three new CCD eclipse timings since 2010 along with all the available data from the literature. It was found that the orbital period of V617 Sgr undergoes an obvious long-term increase, which confirms the result revealed by Steiner et al. (2006). The rate of orbital period increase was calculated to be P˙ = +2.14(0.05) × 10−7 day/year. This suggests the lifetime of the secondary star will attain to the end in a timescale of 0.97 × 106 years faster than that predicted previously. In particular, a cyclic variation with a period of 4.5 year and an amplitude of 2.3 minutes may present in the O-C diagram. Dominated by the wind-accretion mechanism, high mass transfer from the low mass secondary to the white dwarf is expected to sustain in the V Sge-type star V617 Sgr during its long-term evolution. The mass transfer rate |M˙tr| was estimated to be in the range of about 2.2 × 10−7 to 5.2 × 10−7 M⊙ yr−1. Accordingly, the already massive (≥ 1.2 M⊙) white dwarf primary will process stable nuclear burning, accrete a fraction of mass from its companion to reach the standard Chandrasekhar mass limit (≃ 1.38 M⊙), and ultimately produce a type Ia supernova (SN Ia) within about 4 ∼ 8 × 105 years or earlier.-
dc.descriptionFil: Shi, Guang. Chinese Academy Of Sciences; República de China. University of the Chinese Academy of Sciences; China-
dc.descriptionFil: Qian, Sheng Bang. Chinese Academy Of Sciences; República de China. University of the Chinese Academy of Sciences; China-
dc.descriptionFil: Fernandez Lajus, Eduardo Eusebio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.languageeng-
dc.publisherAstronomical Soc Japan-
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/pasj/pst009-
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://pasj.oxfordjournals.org/content/66/1/8-
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1310.4928-
dc.rightsinfo:eu-repo/semantics/openAccess-
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/-
dc.sourcereponame:CONICET Digital (CONICET)-
dc.sourceinstname:Consejo Nacional de Investigaciones Científicas y Técnicas-
dc.sourceinstacron:CONICET-
dc.subjectSTAR EVOLUTION-
dc.subjectECLIPSE-
dc.subjectSTAR WIND-
dc.subjectV617 SGR-
dc.subjectSUPERNOVAE-
dc.subjectSTAR OUTFLOWS-
dc.subjectAstronomía-
dc.subjectCiencias Físicas-
dc.subjectCIENCIAS NATURALES Y EXACTAS-
dc.titleThe confirmation and revision on the orbital period change of the possible type Ia supernova progenitor V617 Sagittarii-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.typeinfo:ar-repo/semantics/articulo-
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