Kapteyn’s Star: Difference between revisions

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modern name for HD 33793 = GJ 191, a high proper motion M1 subdwarf at d=4pc (V=8.8).
modern name for HD 33793 = GJ 191, a high proper motion M1 subdwarf at d=4pc (V=8.8). The 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).


==Etymology and History==
==Etymology and History==
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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”)
[[File:Eric Luyten.jpg|alt=screenshot(s) of text|thumb|Luyten giving the name "Kapteyn" to a star]]
[[File:Eric Luyten.jpg|alt=screenshot(s) of text|thumb|Luyten giving the name "Kapteyn" to a star]]
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)
The name appears to be from Luyten (1927) “Note on the Magnitude and Spectrum of Kapteyn's Star”.

"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),
⚫
NASA ADS shows “Kapteyn’s star” listed in 44 abstracts
* "Kapteyn's Star" in Rhoads (1971),
⚫
Name is already in SIMBAD: http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Kapteyn's+star. Wikipedia
* 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 [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Kapteyn's+star SIMBAD]. Wikipedia


==Mythology==
==Mythology==

Revision as of 13:26, 5 July 2024

modern name for HD 33793 = GJ 191, a high proper motion M1 subdwarf at d=4pc (V=8.8). The 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).

Etymology and History

screenshot of table
Kapteyn's original note of the discovery.

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”)

screenshot(s) of text
Luyten giving the name "Kapteyn" to a star

The name appears to be from Luyten (1927) “Note on the Magnitude and Spectrum of Kapteyn's Star”.

  • "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. Wikipedia

Mythology

IAU Star Name

WGSN discussed the name in 2022 but decided (for the time being) not to name stars after people.

Weblinks

Reference

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