QU Андромеды

QU Андромеды
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 1ч 13м 6,07с[1]
Склонение +41° 39′ 15,51″[1]
Расстояние 44,9162 ± 0,1067 пк[1]
Созвездие Андромеда
Астрометрия
Лучевая скорость (Rv) 58,65 ± 7,7 км/с[1]
Собственное движение
 • прямое восхождение 314,301 ± 0,085 mas/год[1]
 • склонение −38,598 ± 0,093 mas/год[1]
Параллакс (π) 22,2637 ± 0,0529 mas[1]
Спектральные характеристики
Спектральный класс G5[2]
Физические характеристики
Температура 5268 К[3]
Металличность −0,11[4]
Вращение 4,1 ± 1,1 км/с[4]
Коды в каталогах

ASCC 377321, GJ 3080, GSC 02808-00447, HD 7205, HIC 5684, HIP 5684, IRAS 01102+4123, LSPM J0113+4139, LTT 10444, 2MASS J01130603+4139152, NLTT 4029, PPM 43753, 1RXS J011305.8+413918, SAO 37026, UBV M 8021, uvby98 100007205, WDS J01131+4139AB, SBC9 1921, TYC 2808-447-1, AG+41 122, BD+40 248, Gaia DR1 372811716867974272, Gaia DR2 372811515005635072, QU And, USNO-B1.0 1316-00023773, AGKR 1029, G 172-43, G 132-62, GC 1461, GEN# +1.00007205, SKY# 1849, ** YR 20, WISEA J011306.36+413915.1 и TIC 186363552

Информация в базах данных
SIMBAD V* QU And
Логотип Викиданных Информация в Викиданных ?

QU Андромеды (лат. QU Andromedae), HD 7205 — кратная звезда в созвездии Андромеды на расстоянии приблизительно 147 световых лет (около 44,9 парсеков) от Солнца. Видимая звёздная величина звезды — от +7,3m до +7,25m[5]. Возраст звезды определён как около 11,2 млрд лет[3].

Характеристики

Первый компонент (HD 7205Aa) — жёлтый карлик или субгигант, эруптивная переменная звезда типа RS Гончих Псов (RS) спектрального класса G5IV[5][2][6][7] или G8IV-V[8]. Масса — около 1 солнечной, радиус — около 1,7 солнечного, светимость — около 2,2 солнечных[8]. Эффективная температура — около 5268 K[3].

Второй компонент (HD 7205Ab) — предположительно красный карлик спектрального класса M. Масса — не менее 0,39 солнечной[8]. Орбитальный период — около 18,013 суток[8].

Третий компонент — коричневый карлик. Масса — около 12,44 юпитерианских[6]. Удалён на 1,555 а.е.[6].

Четвёртый компонент (HD 7205B) — оранжевый карлик спектрального класса K3V[8]. Масса — около 0,74 солнечной[8]. Удалён на 1,27 угловой секунды[8].

Примечания

  1. ↑ 1 2 3 4 5 6 7 Gaia Data Release 2 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2018.
  2. ↑ 1 2 Cannon A. J., Pickering E. C. VizieR Online Data Catalog: Henry Draper Catalogue and Extension, published in Ann. Harvard Obs. 91-100 (1918-1925) (англ.) // Annals of the Astronomical Observatory of Harvard College — 1918. — Vol. 91-100.
  3. ↑ 1 2 3 Casagrande L., Schönrich R., Asplund M., Ramírez I., Meléndez J., Bensby T., Cassisi S., Feltzing S. New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s) (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2011. — Vol. 530. — P. A138. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201016276 — arXiv:1103.4651
  4. ↑ 1 2 Guillout P., Klutsch A., Frasca A., Freire F. R., Marilli E., Mignemi G., Biazzo K., Monier R., Motch C., Sterzik M. A spectroscopic survey of the youngest field stars in the solar neighbourhood. I. The optically bright sample (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2009. — Vol. 504. — P. 829–843. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/200811313 — arXiv:0907.1157
  5. ↑ 1 2 QU And Архивная копия от 23 июля 2020 на Wayback Machine, database entry, Combined General Catalog of Variable Stars (GCVS5.1, 2017 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Архивная копия от 1 июля 2015 на Wayback Machine Accessed online 2020-12-30.
  6. ↑ 1 2 3 Kervella P., Arenou F., Mignard F., Thévenin F. Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2019. — Vol. 623. — P. 72–72. — 23 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201834371 — arXiv:1811.08902
  7. ↑ Roeser S., Bastian U. PPM (Positions and Proper Motions) North Star Catalogue (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 1988. — Vol. 74. — P. 449. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846
  8. ↑ 1 2 3 4 5 6 7 Fekel F. C. Chromospherically active stars. XXIII. The triple system HD 7205=QU Andromedae (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 2004. — Vol. 127, Iss. 5. — P. 2931–2935. — ISSN 0004-6256; 1538-3881 — doi:10.1086/383560

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