13 Andromedae

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Template:Short description

13 Andromedae
Template:Location mark
Location of 13 Andromedae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.75[2]
Characteristics
Spectral type B9 III or B9 Mn[3]
B−V Template:Engvar Template:Val[2]
Variable type α2 CVn[4]
Astrometry
Radial velocity (Rv)Template:Val[5] km/s
Proper motion (μ) RA: 87.05[1] mas/yr
Dec.: 16.54[1] mas/yr
Parallax (π)10.87±0.30 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)0.98[6]
Details
Luminosity42.89[2] Template:Solar luminosity
Rotational velocity (v sin i)75[7] km/s
Age345[6] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[8]
Database references
SIMBADdata

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File:13AndLightCurve.png
The visual band light curve of 13 Andromedae, adapted from Adelman (2005)[9]

13 Andromedae, abbreviated 13 And, is a single,[10] blue-white hued variable star[4] in the northern constellation of Andromeda. 13 Andromedae is the Flamsteed designation, while it bears the variable star designation V388 Andromedae. With a typical apparent visual magnitude of around 5.75,[2] it is dimly visible to the naked eye under good seeing conditions. The distance to this star can be directly estimated from its annual parallax shift of Template:Val,[1] yielding a range of 300 light years. At that distance, its brightness is diminished by an extinction of 0.13 magnitude due to interstellar dust.[6] The star is moving closer to the Earth with a heliocentric radial velocity of −8 km/s.[5]

The variability of 13 Andromedae was first detected in Hipparcos satellite data, and it received its variable star designation in 1999.[11][12]

This is a magnetic chemically peculiar star that has been assigned stellar classifications of B9 III or B9 Mn.[3] It is a variable star of the Alpha2 Canum Venaticorum type, ranging in magnitude from 5.73 down to 5.77[4] with a period of 1.47946 days.[3] The star has a high rate of spin, showing a projected rotational velocity of 75 km/s.[7] 13 Andromedae is around 345[6] million years old and shines with 43[2] times the Sun's luminosity.

References

Template:Reflist

External links

Template:Stars of Andromeda

  1. ↑ a b c d e f Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR2
  2. ↑ a b c d e Cite error: Invalid <ref> tag; no text was provided for refs named Anderson2012
  3. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named Adelman2005
  4. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named gcvs
  5. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Gontcharov2006
  6. ↑ a b c d Cite error: Invalid <ref> tag; no text was provided for refs named Gontcharov2012
  7. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Abt2002
  8. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
  9. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Adelman
  10. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Eggleton2008
  11. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Paunzen
  12. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Kazarovets
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