Gamma Tauri

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Star
γ Tauri
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation bull
Right ascension 04 h 19 m 47.61 s
declination + 15 ° 37 ′ 39.5 ″
Apparent brightness 3.65 likes
Typing
B − V color index (0.99) 
U − B color index (0.82) 
Spectral class G8 III
Variable star type supposed 
Astrometry
Radial velocity +38.58 ± 0.09 km / s
parallax (22.62 ± 0.46)  mas
distance (144 ± 3)  ly
(44.2 ± 0.9)  pc
Visual absolute brightness M vis (+0.22) mag
Proper movement 
Rec. Share: (113.2 ± 1.0)  mas / a
Dec. portion: (−25.3 ± 0.8)  mas / a
Physical Properties
Dimensions 2.70 ± 0.13  M ☉
radius 13.4 ± 0.2  R ☉
Luminosity

85  L ☉

Effective temperature 4844 ± 47  K
Metallicity [Fe / H] +0.10
Rotation time 253 d
Age 430 to 530 mill.  A
Other names
and catalog entries
Bayer name γ Tauri
Flamsteed name 54 Tauri
Bonn survey BD + 15 ° 612
Bright Star Catalog HR 1346 [1]
Henry Draper Catalog HD 27371 [2]
Hipparcos catalog HIP 20205 [3]
SAO catalog SAO 93868 [4]
Tycho catalog TYC 1264-1009-1 [5]
2MASS catalog 2MASS J04194757 + 1537395 [6]
Other names FK5  159

Gamma Tauri ( γ Tauri , γ Tau ) is a star in the constellation Taurus . It has an apparent magnitude of 3.65 mag and is around 160 light years away. Gamma Tauri is a member of the Hyades . The star bears the historical proper name Hyadum I ( Primus Hyadum or Prima Hyadum , "First of the Hyades").

Individual evidence

  1. ↑ a b c d e f gam Tau. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed August 18, 2018 .
  2. ↑ a b c d e Takeda, Yoichi, Sato, Bun'ei, Murata, Daisuke: Stellar Parameters and Elemental Abundances of Late-G Giants . In: Publications of the Astronomical Society of Japan . 60, No. 4, August 2008, pp. 781-802. arxiv : 0805.2434 . bibcode : 2008PASJ ... 60..781T . doi : 10.1093 / pasj / 60.4.781 .
  3. ^ A b da Silva, L .: Basic physical parameters of a selected sample of evolved stars . In: Astronomy and Astrophysics . 458, No. 2, November 2006, pp. 609-623. arxiv : astro-ph / 0608160 . bibcode : 2006A & A ... 458..609D . doi : 10.1051 / 0004-6361: 20065105 .
  4. ↑ a b Boyajian, Tabetha S .: Angular Diameters of the Hyades Giants Measured with the CHARA array . In: The Astrophysical Journal . 691, No. 2, February 2009, pp. 1243-1247. arxiv : 0810.2238 . bibcode : 2009ApJ ... 691.1243B . doi : 10.1088 / 0004-637X / 691/2/1243 .
  5. ↑ J. Setiawan, L. Pasquini, L. da Silva, AP Hatzes, O. von der Lühe, L. Girardi, JR de Medeiros, E. Guenther: Precise radial velocity measurements of G and K giants. Multiple systems and variability trend along the Red Giant Branch . In: Astronomy and Astrophysics . 421, July 2004, pp. 241-254. bibcode : 2004A & A ... 421..241S . doi : 10.1051 / 0004-6361: 20041042-1 .