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The Lithium-rich supergiant HD172365

1999; Wiley; Volume: 320; Issue: 1 Linguagem: Inglês

10.1002/1521-3994(199903)320

1521-3994

S.M. Andrievsky, N. Gorlova, В. Г. Клочкова, V. V. Kovtyukh, V.E. Panchuk,

Astrophysics and Star Formation Studies

Astronomische NachrichtenVolume 320, Issue 1 p. 35-41 Original Paper The Lithium-rich supergiant HD172365 S.M. Andrievsky, S.M. Andrievsky Dpt of Astronomy, Odessa State University, Shevchenko Park, 270014 Odessa, UkraineSearch for more papers by this authorN.I. Gorlova, N.I. Gorlova Dpt of Astronomy, Odessa State University, Shevchenko Park, 270014 Odessa, UkraineSearch for more papers by this authorV.G. Klochkova, V.G. Klochkova Special Astronomical Observatory, Russian Academy of Sciences, Nizhny Arkhyz, RussiaSearch for more papers by this authorV.V. Kovtyukh, V.V. Kovtyukh Astronomical Observatory, State University, Shevchenko Park, 270014 Odessa, UkraineSearch for more papers by this authorV.E. Panchuk, V.E. Panchuk Special Astronomical Observatory, Russian Academy of Sciences, Nizhny Arkhyz, RussiaSearch for more papers by this author S.M. Andrievsky, S.M. Andrievsky Dpt of Astronomy, Odessa State University, Shevchenko Park, 270014 Odessa, UkraineSearch for more papers by this authorN.I. Gorlova, N.I. Gorlova Dpt of Astronomy, Odessa State University, Shevchenko Park, 270014 Odessa, UkraineSearch for more papers by this authorV.G. Klochkova, V.G. Klochkova Special Astronomical Observatory, Russian Academy of Sciences, Nizhny Arkhyz, RussiaSearch for more papers by this authorV.V. Kovtyukh, V.V. Kovtyukh Astronomical Observatory, State University, Shevchenko Park, 270014 Odessa, UkraineSearch for more papers by this authorV.E. Panchuk, V.E. Panchuk Special Astronomical Observatory, Russian Academy of Sciences, Nizhny Arkhyz, RussiaSearch for more papers by this author First published: 04 April 2001 https://doi.org/10.1002/1521-3994(199903)320:1 3.0.CO;2-FCitations: 2AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract The F-type supergiant HD172365 was discovered by Luck (1982) to be a high Li abundance star. We find that the lithium abundance in this star is log A(Li) = 2.9 from a careful spectroscopic study. This value is larger than the abundance derived by Luck. We discuss the properties of this supergiant and tentatively conclude that HD172365 may, in fact, be a post-blue straggler star with a mass ∼2 times greater than the "turn-off point" mass for the open cluster IC 4756, of which HD172365 is a member. The star is formed by a merger of a close binary system. This conclusion is supported by, for example, its large projected rotational velocity, solar carbon abundance and high lithium content. References Abia, C., Boffin, H.M.J., Isern, J., Rebolo, R.: 1994, Astron. Astrophys. 272, 455 Ahumada, J., Lapasset, E.: 1995, Astron. Astrophys. Suppl. 109, 375 Allen, C.W.: 1973, Astrophysical Quantities, The Athlone Press Andrievsky, S.M.: 1997, Astron. Astrophys. 321, 838 Andrievsky, S.M., Kovtyukh, V.V., Usenko, I.A.: 1996, Astron. Astrophys. 305, 551 Andrievsky, S.M., Kovtyukh, V.V.: 1997, Astrophys. Space Sci. 245, 61 Brown, J.A., Sneden, C., Lambert, D.L., Duchover, E.: 1989, Astrophys. 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