V. Kaspi, S. Johnston, R. Manchester, M. Bailes, J. Bell, M. Bessell, A. Lyne, N. D'Amico
{"title":"A radio pulsar‐B star binary in the small magellanic cloud","authors":"V. Kaspi, S. Johnston, R. Manchester, M. Bailes, J. Bell, M. Bessell, A. Lyne, N. D'Amico","doi":"10.1063/1.45960","DOIUrl":null,"url":null,"abstract":"We report the discovery of regular Doppler shifts of the pulse period of PSR J0045−7319, the only known pulsar in the Small Magellanic Cloud. The pulsar is in a highly concentric 51‐day orbit with a companion star of mass greater than 4M⊙. Optical observations in the direction of the pulsar reveal a 16th magnitude B star companion. The PSR J0045−7319 system is likely an x‐ray binary progenitor.","PeriodicalId":101857,"journal":{"name":"The evolution of X‐ray binaries","volume":"82 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The evolution of X‐ray binaries","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1063/1.45960","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
We report the discovery of regular Doppler shifts of the pulse period of PSR J0045−7319, the only known pulsar in the Small Magellanic Cloud. The pulsar is in a highly concentric 51‐day orbit with a companion star of mass greater than 4M⊙. Optical observations in the direction of the pulsar reveal a 16th magnitude B star companion. The PSR J0045−7319 system is likely an x‐ray binary progenitor.
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