Psi1 Aurigae

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Psi1 Aurigae
Template:Location mark
Location of ψ1 Aurigae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 4.91[2]
Characteristics
Evolutionary stage Red supergiant
Spectral type K5-M1Iab-Ib[3]
U−B Template:Engvar +2.29[2]
B−V Template:Engvar +1.97[2]
R−I Template:Engvar 1.07Script error: No such module "Unsubst".
Variable type LC[4]
Astrometry
Radial velocity (Rv)+4.7[5] km/s
Proper motion (μ) RA: −0.155[1] mas/yr[1]
Dec.: −2.131 mas/yr[1]
Parallax (π)0.4426±0.1103 mas[1]
DistanceTemplate:Val ly
(Template:Val pc)[6]
Absolute magnitude (MV)−5.53[7]
Details
Mass14.4±0.8[8] Template:Solar mass
RadiusTemplate:Solar radius[9]
Template:Solar radius calculator[10]Template:Efn Template:Solar radius
Luminosity170,400[9] Template:Solar luminosity
Temperature3,790[9] K
Metallicity [Fe/H]+0.08[11] dex
Age12.3±0.4[8] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[12]
Database references
SIMBADdata

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Psi1 Aurigae is a star in the northern constellation of Auriga. It name is a Bayer designation that is Latinized from ψ1 Aurigae, and abbreviated Psi1 Aur or ψ1 Aur. This star is faintly visible to the naked eye with an apparent visual magnitude of 4.91.[2] Based upon a measured annual parallax shift of Template:Val,[1] it is approximately Template:Convert distant from the Earth. It is receding from the Sun with a radial velocity of +4.7 km/s.[5]

File:Psi1AurLightCurve.png
A visual band light curve for Psi1 Aurigae, adapted from Percy et al. (2001)[13]

This is a massive supergiant star with a stellar classification of K5-M1Iab-Ib.[3] It is a slow irregular variable of the LC type, with its brightness varying in magnitude by 0.44.[4] The star is more than 14[8] times as massive as the Sun, over 900 times larger, and is blazing with 170,000 times the Sun's luminosity.[9] It is one of the largest stars known, even larger and more luminous than well-known red supergiants Betelgeuse and Antares. This energy is being radiated into outer space from its outer atmosphere at an effective temperature of 3,790 K,[9] giving it the orange-red hue of a cool M-type star.

See also

Notes

Template:Notelist

References

Template:Reflist

External links

Template:Stars of Auriga

  1. ↑ a b c d e f Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR3
  2. ↑ a b c d Cite error: Invalid <ref> tag; no text was provided for refs named aass34_1
  3. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named keenan
  4. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named ba10_589
  5. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named scfs
  6. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named b-j
  7. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Schiavon2007
  8. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named mnras410_1_190
  9. ↑ a b c d e Cite error: Invalid <ref> tag; no text was provided for refs named healy
  10. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named taniguchi
  11. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named jrasc65_222
  12. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
  13. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Percy
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