Kapteyn’s Star

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Revision as of 11:36, 5 July 2024 by Ericmamajek (talk | contribs) (Created page with "modern name for HD 33793 = GJ 191, a high proper motion M1 subdwarf at d=4pc (V=8.8). ==Etymology and History== This was 2nd highest proper motion star in 1927 according to Luyten and still is! (8.7”/yr). It was pointed out as highest proper motion (at time) by Kapteyn (1897) “Stern mit grösster bislang bekannter Eigenbewegung” (“Star with largest self-motion known to date”) Name appears to be from Luyten (1927) “Note on the Magnitude and Spectrum of Kap...")
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modern name for HD 33793 = GJ 191, a high proper motion M1 subdwarf at d=4pc (V=8.8).

Etymology and History

This was 2nd highest proper motion star in 1927 according to Luyten and still is! (8.7”/yr). It was pointed out as highest proper motion (at time) by Kapteyn (1897) “Stern mit grösster bislang bekannter Eigenbewegung” (“Star with largest self-motion known to date”)

Name appears to be from Luyten (1927) “Note on the Magnitude and Spectrum of Kapteyn's Star”. Star was unusual – very blue but M1 type, high pm and very high radial velocity (242 km/s). Two recent exoplanet candidates reported (Anglada-Escude+2014) but both have been rebutted (Bortles+2021) "Kapteyn" in Allen (1963; Astrophysical Quantities), "Kapteyn's Star" in Rhoads (1971), Burnham (1978), Fernandez+(1983), Sinnott & Perryman Millenium Atlas (1997), Cox (2000; Astrophysical Quantities), Kaler (2006). NASA ADS shows “Kapteyn’s star” listed in 44 abstracts Name is already in SIMBAD: http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Kapteyn's+star. Wikipedia

Mythology

IAU Star Name

Weblinks

Reference

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