Kapteyn’s Star: Difference between revisions
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...") |
Ericmamajek (talk | contribs) (text sources added) |
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==Etymology and History== |
==Etymology and History== |
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[[File:Eric kapteyn.png|alt=screenshot of table|thumb|Kapteyn's original note of the discovery. ]] |
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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”) |
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”) |
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[[File:Eric Luyten.jpg|alt=screenshot(s) of text|thumb|Luyten giving the name "Kapteyn" to a star]] |
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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) |
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) |
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"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). |
"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). |
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Revision as of 11:40, 5 July 2024
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
