Taygeta

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Template:Short description

Taygeta
Template:Location mark
Taygeta in the Pleiades cluster (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Taurus
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 4.30[2]
Characteristics
Evolutionary stage subgiant[3]
Spectral type B6IV[4] + ?[5]
U−B Template:Engvar −0.48[6]
B−V Template:Engvar −0.12[6]
Astrometry
Radial velocity (Rv)10.1[7] km/s
Proper motion (μ) RA: Template:Val[1] mas/yr
Dec.: Template:Val[1] mas/yr
Parallax (π)7.97±0.33 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Details
Taygeta
MassTemplate:Val[8] Template:Solar mass
RadiusTemplate:Val[8] Template:Solar radius
Luminosity600[9] Template:Solar luminosity
Surface gravity (log g)Template:Val[8] cgs
TemperatureTemplate:Val[8] K
Rotational velocity (v sin i)Template:Val[8] km/s
19 Tauri Ab
Mass3.2[9] Template:Solar mass
Luminosity150[9] Template:Solar luminosity
Surface gravity (log g)4.2[8] cgs
Temperature8,306[8] K
Metallicity [Fe/H] dex
Other designations
q Tauri, 19 Tauri, HR 1145, HD 23338, BD+24°547, HIP 17531, SAO 76140, GC 4486, BDS 1848, CCDM 03452+2429[10]
Database references
SIMBADdata

Script error: No such module "Check for unknown parameters".

Template:Sky Taygeta is a double star in the constellation of Taurus and a member of the Pleiades open star cluster (M45).

It consists of a binary pair designated 19 Tauri A together with a single star visual companion, 19 Tauri B. 'A's' two components are themselves designated 19 Tauri Aa (officially named Taygeta Template:IPAc-en,[11] the traditional name for the entire system)[12] and Ab.

Based on parallax measurements obtained during the Hipparcos mission, Taygeta is approximately 410 light-years from the Sun.

Nomenclature

19 Tauri is the system's Flamsteed designation. It also bears the little-used Bayer designation q Tauri. The designations of the two constituents as 19 Tauri A and B, and those of A's components - 19 Tauri Aa and Ab - derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).[13]

The system bore the traditional name Taygeta (or Taygete).[14] Taygete was one of the Pleiades sisters in Greek mythology. In 2016, the IAU organized a Working Group on Star Names (WGSN)[15] to catalogue and standardize proper names for stars. The WGSN approved the name Taygeta for the component 19 Tauri Aa on 21 August 2016 and it is now so included in the List of IAU-approved Star Names.[12]

Properties

Taygeta has an apparent magnitude of +4.30 and presents as a blue-white B-type subgiant. It has been used as a standard star for that spectral type.[4] It is a spectroscopic binary, whose component stars have magnitudes of +4.6 and +6.1. They are separated by 0.012 arcseconds and complete one orbit every 1313 days. The subgiant primary is one of just a handful of stars in the young Pleiades cluster that have evolved away from the main sequence.[3]

The 8th magnitude visual companion, 19 Tauri B, is 69 arcseconds away. It is thought to be a yellow star somewhat more massive and larger than the Sun, and further away than the Pleiades cluster.[16]

Taygeta was once reported to be variable,[17] but has since been measured to be very nearly constant.[18][19]

References

Template:Reflist

Template:Stars of Taurus

Template:Authority control

  1. ↑ a b c d e Cite error: Invalid <ref> tag; no text was provided for refs named van Leeuwen2007
  2. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named ubv
  3. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named mazzei1989
  4. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named morgan1973
  5. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named mnras389_2_869
  6. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named PENSTON
  7. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named guillermo2020
  8. ↑ a b c d e f g Cite error: Invalid <ref> tag; no text was provided for refs named White2017
  9. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named kaler
  10. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
  11. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Davis44
  12. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named IAU-LSN
  13. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named planetnaming
  14. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Allen1899
  15. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named WGSN
  16. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named epic
  17. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named gcvs
  18. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named percy
  19. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named adelman
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