{"refrec":{"BRefID":303376,"RR":"<b>Exter, K.M.; Pollacco, D.L.; Bell, S.A.</b> (2003). The planetary nebula K 1-2 and its binary central star VW Pyx. <i>Monthly Notices of the Royal Astronomical Society 341(4)</i>: 1349-1359. <a href=\"https://dx.doi.org/10.1046/j.1365-8711.2003.06505.x\" target=\"_blank\">https://dx.doi.org/10.1046/j.1365-8711.2003.06505.x</a>","BEntID":295670,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Monthly Notices of the Royal Astronomical Society 341(4)</i>: 1349-1359. <a href=\"https://dx.doi.org/10.1046/j.1365-8711.2003.06505.x\" target=\"_blank\">https://dx.doi.org/10.1046/j.1365-8711.2003.06505.x</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Exter, K.M.; Pollacco, D.L.; Bell, S.A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Exter, K.M. <i>et al.</i>","Englishabstract":"New data are presented of the post-common-envelope binary VW Pyx and its associated planetary nebula (PN), K 1-2. The central star is found to be a single-lined (and possibly double-lined) spectroscopic binary and is a good candidate for a system in which the main-sequence secondary star is more massive than the subdwarf primary star. The old PN has a high excitation level and a measured electron temperature, <em>T</em><sub>O</sub>∼ 17 000 K for an assumed log <em>n</em><sub>e</sub>= 2.7 cm<sup>−3</sup>. The so-called ‘jets’ are found to be lower-ionization regions with <em>T</em><sub>N</sub>∼ 11 000 K and <em>T</em><sub>O</sub>∼ 16 000 K with log <em>n</em><sub>e</sub>∼ 2.5 cm<sup>−3</sup> and with low, but fairly typical, PN abundances. We discuss possible histories for K 1-2 and the jets. However, there are still many unknowns in the study of accretion and jet formation for such PN binary central stars.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The planetary nebula K 1-2 and its binary central star VW Pyx","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"binaries: close, binaries: spectroscopic, stars: individual: VW Pyx, stars: low-mass, brown dwarfs, planetary nebulae: individual: K 1-2","OtherDescriptors":null,"Notes":null,"AnaPub":2003,"MonPub":null,"DateUpdate":"2018-11-28","DateCreate":"2018-11-28","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000183080200035","VABBcode":null,"OpenAcc":1,"DOI":"10.1046/j.1365-8711.2003.06505.x"},"refs":null,"anarec":{"AnaID":303376,"PubliDate":2003,"Pagination":"1349-1359","XtraPublOfAnaID":null,"ISBN":null,"Volume":"341","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":274984,"SerRR":"Monthly Notices of the Royal Astronomical Society. 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