14 Aurigae

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Template:Short description

14 Aurigae
File:14AurLightCurve.png
A visual band light curve for 14 Aurigae, adapted from Fitch and Wisniewski (1979)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 5.01[3] (5.08 + 7.86)[4]
Characteristics
Spectral type A9IV + ? + F5V + M3V: + WDA[4]
U−B Template:Engvar +0.19[5]
B−V Template:Engvar Template:Val[3]
Variable type δ Scuti[6]
Astrometry
Radial velocity (Rv)Template:Val[3] km/s
Proper motion (μ) RA: −25.062[2] mas/yr
Dec.: +12.056[2] mas/yr
Parallax (π)12.1306±0.1712 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)0.31[3]
Details
14 Aur Aa
Mass1.64[7] Template:Solar mass
Luminosity62.07[3] Template:Solar luminosity
Surface gravity (log g)3.46[8] cgs
Temperature7,498[8] K
Metallicity [Fe/H]−0.02[3] dex
Rotation2.11 h[6]
Rotational velocity (v sin i)27.6[8] km/s
Age609[7] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[9]
Database references
SIMBADdata

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14 Aurigae is a quadruple star system located 269[2] light years away from the Sun in the zodiac constellation of Auriga. It has the variable star designation KW Aurigae, whereas 14 Aurigae is the Flamsteed designation.[9] It is visible to the naked eye as a faint, white-hued star with a combined apparent visual magnitude of 5.01.[3] The system is moving closer to the Sun with a heliocentric radial velocity of −9 km/s.[3]

The magnitude 5.08[4] primary member, designated component A, is a single-lined spectroscopic binary system in a circular orbit with a period of 3.7887 days.[10] The visible member has a stellar classification of A9 IV or A V, depending on the source.[11] In 1966, Ivan John Danziger and Robert John Dickens discovered that 14 Aurigae star is a variable star.[12] It is a Delta Scuti variable with an amplitude of 0.08 magnitude and a period of 2.11 hours.[6] It is 609 million years old with 1.64 times the mass of the Sun.[7]

Component B lies about Template:Val to the north of the primary and is merely a visual companion. However, component C, an F-type main sequence star of magnitude 7.86,[4] shares a common proper motion with component A and thus they form a system. This member is also a single-lined spectroscopic binary, having a period of 2.9934 days. The final member of the system, now designated component Cb, is a white dwarf star that is separated from the C, or rather Ca pair by Template:Val. If it is indeed bound to Ca, its orbital period is around 1,300 years.[11]

References

Template:Reflist

External links

Template:Stars of Auriga

  1. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Fitch
  2. ↑ a b c d e f Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR2
  3. ↑ a b c d e f g h Cite error: Invalid <ref> tag; no text was provided for refs named Anderson2012
  4. ↑ a b c d Cite error: Invalid <ref> tag; no text was provided for refs named Eggleton2008
  5. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named EgUBV
  6. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named Solano1997
  7. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named David2015
  8. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named Schröder2009
  9. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Simbad
  10. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Pourbaix2004
  11. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Barstow2001
  12. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Danziger1966
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