Alpha Corvi

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Template:Short description

Alpha Corvi
Observation data
Epoch J2000      Equinox J2000
Constellation Corvus
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 4.03[2]
Characteristics
Spectral type F1 V[3] + M4 V[4]
U−B Template:Engvar +0.00[2]
B−V Template:Engvar +0.34[2]
Variable type Gamma Doradus?[5]
Astrometry
Radial velocity (Rv)+3.0[6] km/s
Proper motion (μ) RA: +96.976 mas/yr[1]
Dec.: Template:Val mas/yr[1]
Parallax (π)66.7696±0.1804 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)3.25[7]
Details[8]
MassTemplate:Val Template:Solar mass
RadiusTemplate:Val Template:Solar radius
LuminosityTemplate:Val Template:Solar luminosity
Surface gravity (log g)Template:Val cgs
TemperatureTemplate:Val K
Metallicity [Fe/H]Template:Val[9] dex
Rotational velocity (v sin i)Template:Val[10] km/s
AgeTemplate:Val[9] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Alchiba, Al Minliar al Ghurab, Al Chiba, 1 Crv, CD−24°10174, GCTP 2796.00, GJ 455.3, GJ 9389, HD 105452, HIP 59199, HR 4623, SAO 180505[11]
Database references
SIMBADdata

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

Alpha Corvi (α Corvi, abbreviated Alpha Crv, α Crv), also named Alchiba Template:IPAc-en,[12] is an F-type main-sequence star and, despite its "alpha" designation, is the fifth-brightest star in the constellation of Corvus. Based on parallax measurements made by the Gaia mission, it is approximately 49 light-years from the Sun.[1]

Nomenclature

α Corvi (Latinised to Alpha Corvi) is the star's Bayer designation.

It bore the traditional names Al Chiba (Template:Langx Script error: No such module "Lang"., 'tent') and Al Minliar al Ghurab (Arabic Script error: No such module "Lang". Script error: No such module "Lang".)[13] or Minkar al Ghurab. The latter appeared in the catalogue of stars in the Calendarium of Al Achsasi al Mouakket, which was translated into Latin as Script error: No such module "Lang"., 'beak of the crow'.[14] In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[15] to catalogue and standardize proper names for stars. The WGSN approved the name Alchiba for this star on 12 September 2016 and it is now so included in the List of IAU-approved Star Names.[12]

In Chinese astronomy, Alchiba is called Script error: No such module "Lang"., Pinyin: Script error: No such module "Lang"., meaning 'right linchpin', because it stands alone in the 'right linchpin' asterism, Chariot mansion (see: Chinese constellations),[16] Script error: No such module "Lang"., Script error: No such module "Lang". was westernized into Yew Hea by R.H. Allen.[13]

Namesake

Template:USS is a former United States Navy ship.

Properties

Alchiba has a spectral class F1V,[3] classifying it as a main sequence star fusing hydrogen into helium at its core. This star exhibits periodic changes in its spectrum over a three-day period, which suggests it is either a spectroscopic binary or (more likely) a pulsating Gamma Doradus-type variable.[5] Alchiba has 34% more mass and is 42% larger than the Sun. It is 4.3 times more luminous and has a surface effective temperature of 6,985 K,[8] giving it the yellow-white hue of an F-type star.[17] The abundance of chemical elements other than hydrogen and helium, what astronomers name metallicity, is slightly lower than that of the Sun.[9]

Alpha Corvi has a common proper motion companion, named Alpha Corvi B (or Alchiba B), located about 3.1 arcsec away. It is a red dwarf with a spectral type of M4V.[4]

See also

References

Template:Reflist

External links

Template:Stars of Corvus

  1. ↑ a b c d e Cite error: Invalid <ref> tag; no text was provided for refs named DR3
  2. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named MERMILLIOD
  3. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named aj132_1_161
  4. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Scholz
  5. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Fuhrmann 2012
  6. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named paas21_2_129
  7. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named aaa343_222
  8. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Harada2024
  9. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named luck2017
  10. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named AmmlerVonEiff2012
  11. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
  12. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named IAU-LSN
  13. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named allen
  14. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named mnras55_429
  15. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named WGSN
  16. ↑ Template:In lang AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 22 日 Template:Webarchive
  17. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named csiro
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