26 Andromedae: Difference between revisions

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imported>Lithopsian
fix designation in chart
 
imported>21.Andromedae
Higher precision in measurements
 
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  | age_myr = 95<ref name=Wyatt2007/>
  | age_myr = 95<ref name=Wyatt2007/>
  | component2 = B
  | component2 = B
  | mass2 = 1.0<ref name=GaiaDR3B/>
  | mass2 = 1.04<ref name=GaiaDR3B/>
  | luminosity2 = 1.5<ref name=GaiaDR3B/>
  | luminosity2 = 1.511<ref name=GaiaDR3B/>
  | temperature2 = 5,924<ref name=GaiaDR3B/>
  | temperature2 = 5,924<ref name=GaiaDR3B/>
  | radius2 = 1.2<ref name=GaiaDR3B/>
  | radius2 = 1.165<ref name=GaiaDR3B/>
  | gravity2 = 4.32<ref name=GaiaDR3B/>
  | gravity2 = 4.322<ref name=GaiaDR3B/>
  | age_gyr2 = 6.1<ref name=GaiaDR3B/>
  | age_gyr2 = 6.1<ref name=GaiaDR3B/>
}}
}}

Latest revision as of 16:54, 27 June 2025

Template:Short description

26 Andromedae
Template:Location mark
Location of 26 Andromedae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
A
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 6.11[2]
B
Right ascension Template:RA[3]
Declination Template:DEC[3]
Apparent magnitude (V) 9.70[2]
Characteristics
Evolutionary stage main sequence[4]
Spectral type B8 V[5] + F3 V[6]
B−V Template:Engvar Template:Val[7]
Variable type suspected[8][6]
Astrometry
A
Radial velocity (Rv)+3.3[9] km/s
Proper motion (μ) RA: 23.328[1] mas/yr
Dec.: −2.755[1] mas/yr
Parallax (π)5.3927±0.0192 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)0.02[10]
B
Proper motion (μ) RA: 22.083[1] mas/yr
Dec.: −3.568[1] mas/yr
Parallax (π)5.4683±0.0142 mas[3]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)4.00[11]
Details
A
MassTemplate:Val[4] Template:Solar mass
Radius3.76[12] Template:Solar radius
Luminosity219[5] Template:Solar luminosity
Surface gravity (log g)3.82[1] cgs
Temperature11,939[5] K
Rotational velocity (v sin i)18[4] km/s
Age95[5] Myr
B
Mass1.04[3] Template:Solar mass
Radius1.165[3] Template:Solar radius
Luminosity1.511[3] Template:Solar luminosity
Surface gravity (log g)4.322[3] cgs
Temperature5,924[3] K
Metallicity [Fe/H]{{{metal_fe2}}} dex
Age6.1[3] Gyr
Other designations
Template:Odlist[13]
Database references
SIMBADdata

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

File:26AndLightCurve.png
A visual band light curve for 26 Andromedae, adapted from Zasche and Svoboda (2008)[6]

26 Andromedae, abbreviated 26 And, is a binary star system[6] in the constellation Andromeda. 26 Andromedae is the Flamsteed designation. It has a combined apparent visual magnitude of 6.10, which is near the lower limit of visibility to the naked eye. The distance to this system can be estimated from its annual parallax shift of Template:Val, which yields a distance of about 600 light years. At that distance, the visual magnitude of the stars is diminished from an extinction of 0.04 due to interstellar dust.[2] The system is moving further from the Earth with a heliocentric radial velocity of +3.3 km/s.[9]

The magnitude 6.11[2] primary, component A, is a B-type main-sequence star with a stellar classification of B8 V.[5] The star has 3.54[4] times the mass of the Sun and 3.76[12] times the Sun's radius. It is around 95[5] million years old and is spinning with a projected rotational velocity of 18 km/s.[4] 26 And is radiating 219[5] times the Sun's luminosity from its photosphere at an effective temperature of 11,939 K.[5] It displays an infrared excess that suggests a circumstellar debris disk orbiting at a distance of Template:Val from the star with a temperature of 75 K.[12]

The fainter secondary, component B, is a magnitude 9.70[2] star located Template:Val from the primary. It is an F-type main-sequence star with a class of F3 V that shows an unexplained long term variability.

One of the components of this system displays a slight photometric variation with a period of 3.16 days. This may be caused by pulsation or an ellipsoidal variation.[6] This system's X-ray emission hasn't been detected yet, with an upper limit of Lx < 29.79 erg/s.[2]

References

Template:Reflist

External links

Template:Stars of Andromeda

  1. ↑ a b c d e f g h Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR3
  2. ↑ a b c d e f Cite error: Invalid <ref> tag; no text was provided for refs named Huélamo2000
  3. ↑ a b c d e f g h i Cite error: Invalid <ref> tag; no text was provided for refs named GaiaDR3B
  4. ↑ a b c d e Cite error: Invalid <ref> tag; no text was provided for refs named zorec2012
  5. ↑ a b c d e f g h Cite error: Invalid <ref> tag; no text was provided for refs named Wyatt2007
  6. ↑ a b c d e Cite error: Invalid <ref> tag; no text was provided for refs named Zasche2008
  7. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Anderson2012
  8. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named gcvs
  9. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Steenbrugge2003
  10. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Gontcharov2012
  11. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Lindroos1985
  12. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named Cotten2016
  13. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
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