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X Persei

X Persei
HR-designaatio 1209
HD-designaatio 24534
Muut designaatiot BD+30°591, WDS J03554+3103
Fyysiset ominaisuudet
Spektriluokka B0 V[1]
Lämpötila 29 500 ± 1 500[1] K
Muuttujatyyppi GCAS, röntgenpulsari
Pyörimisnopeus 215 ± 10 km/s[1]
Astrometriset ominaisuudet
Tähdistö Perseus
Etäisyys 700 ± 300 pc[1]

X Persei on suurimassainen röntgenkaksoistähti Perseuksen tähtikuviossa.[1] Sen toinen komponentti on pulsari 4U 0352+30, jonka pyörähdysaika on noin 837 sekuntia, ja toinen on B0V-spektriluokan tähti. Ne ovat 0,7–1,3 kiloparsekin etäisyydellä Maasta.[2]

Lähteet

  1. ↑ a b c d e Lyubimkov, L. S.; Rostopchin, S. I.; Roche, P.; Tarasov, A. E.: Fundamental parameters, helium abundance and distance of X Persei (PDF) Monthly Notices of the Royal Astronomical Society, Volume 286, Issue 3. 4/1997. Viitattu 18.4.2018. (englanniksi)
  2. ↑ LONG-TERM OPTICAL OBSERVATIONS OF THE Be/X-RAY BINARY X PER The Astronomical Journal, Volume 148, Number 6. 31.10.2014. The American Astronomical Society. Viitattu 18.4.2018. (englanniksi)
Perseuksen tähdistö (Perseus) » luettelo tähdistä, luokka
Tähdet

Mirfak, Algol, ζ Per, ε Per, γ Per A, γ Per B, δ Per, ρ Per, η Per, ν Per, κ Per, ο Per, τ Per A, 48 Per, ξ Per, τ Per B, φ Per, ι Per, θ Per, μ Per, 16 Per, λ Per, 58 Per, ψ Per, σ Per, 17 Per, HD 26961, ω Per, 34 Per, 52 Per, π Per, HD 18970, 53 Per, 1 Aur, 12 Per, 54 Per, 24 Per, 32 Per, 40 Per, 4 Per, 31 Per, 21 Per, 42 Per, 9 Per, 29 Per, 43 Per, 36 Per, 59 Per, 20 Per, 14 Per, 30 Per, 50 Per, 1 Per, HD 27192, 2 Per, 3 Per, 55 Per, 8 Per, 11 Per, 56 Per, 7 Per, 49 Per, 57 Per, 10 Per, 5 Per, X Per

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