DT Близнецов

DT Близнецов
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 6ч 06м 58,09с[1]
Склонение +25° 24′ 1,96″[1]
Видимая звёздная величина (V) 12,514[2]
Созвездие Близнецы
Астрометрия
Лучевая скорость (Rv) 47,27 ± 11,43 км/с[1]
Собственное движение
 • прямое восхождение 0,165 ± 0,101 mas/год[1]
 • склонение −1,27 ± 0,081 mas/год[1]
Параллакс (π) 0,21 ± 0,0686 mas[1]
Спектральные характеристики
Переменность RR Лиры с почти симметричной кривой блеска[вд][3]
Коды в каталогах
UCAC2 40658064, 2MASS J06065809+2524020, AN 339.1930, GSC 01868-01396, SV* P 355, Gaia DR2 3426599160147079168, DT Gem, ASASSN-V J060658.07+252402.1, ATO J091.7420+25.4005 и TIC 80982520
Информация в базах данных
SIMBAD V* DT Gem
Логотип Викиданных Информация в Викиданных ?

DT Близнецов (лат. DT Geminorum) — одиночная переменная звезда[4][5][6][7] в созвездии Близнецов на расстоянии (вычисленном из значения параллакса) приблизительно 15 530 световых лет (около 4 762 парсек) от Солнца. Видимая звёздная величина звезды — от +13,5m до +13,1m[8]. Возраст звезды определён как около 446 млн лет[9].

Характеристики

DT Близнецов — жёлтая пульсирующая переменная звезда типа RR Лиры (RRAB)[10]*[11] или (RRC)[12][13] спектрального класса G0:[8][14]. Эффективная температура — около 5308 К[1].

Примечания

  1. 1 2 3 4 5 6 7 Gaia Data Release 2 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2018.
  2. Jurcsik J., Hajdu G., Catelan M. New Galactic Multi-Mode Cepheids from the ASAS-SN Survey (англ.) // Acta Astronomica / M. KubiakCopernicus Foundation for Polish Astronomy, 2018. — Vol. 68. — P. 341–350. — ISSN 0001-5237
  3. Kukarkin B. V., Kholopov P. N., Pskovsky Y. P., Efremov Y. N., Kukarkina N. P., Kurochkin N. E., Medvedeva G. I. General Catalogue of Variable Stars, 3rd ed. — 1971.
  4. Heinze A. N., Tonry J. L., Denneau L., Stalder B., Rest A., Smith K. W., Smartt S. J., Weiland H. A First Catalog of Variable Stars Measured by the Asteroid Terrestrial-impact Last Alert System (ATLAS) (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 2018. — Vol. 156, Iss. 5. — P. 241. — ISSN 0004-6256; 1538-3881doi:10.3847/1538-3881/AAE47FarXiv:1804.02132
  5. Schmidt E. G. The intermediate-period cepheid strip stars (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 2002. — Vol. 123. — P. 965–982. — ISSN 0004-6256; 1538-3881doi:10.1086/338439
  6. Schmidt E. G., Reiswig D. E. The Behlen observatory variable star survey: finding charts and light curves for the first ninety-three stars (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 1993. — Vol. 106. — P. 2429–2440. — ISSN 0004-6256; 1538-3881doi:10.1086/116813
  7. Hoffmeister C. 93 neue Veränderliche (англ.) // Astronomische NachrichtenWiley, 1930. — Vol. 240. — P. 193–198. — ISSN 0004-6337; 1521-3994doi:10.1002/ASNA.19302401205
  8. 1 2 DT Gem Архивная копия от 4 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 6 августа 2012 на Wayback Machine Accessed online 2022-04-04.
  9. Skowron D. M., Skowron J., Mroz P., Udalski A., Pietrukowicz P., Soszynski I., Szymanski M. K., Poleski R., Kozlowski S., Ulaczyk K. et al. A three-dimensional map of the Milky Way using classical Cepheid variable stars (англ.) // Science / H. Thorp — Northern America: AAAS, 2019. — Vol. 365, Iss. 6452. — P. 478–482, 478—482. — ISSN 0036-8075; 1095-9203doi:10.1126/SCIENCE.AAU3181PMID:31371611arXiv:1806.10653
  10. Maintz G. DT Gem - ein RRab-Stern mit leichtem Blazhko-Effekt // BAV RundbriefBundesdeutsche Arbeitsgemeinschaft für Veränderliche Sterne, 2016. — Т. 65. — С. 1—3.
  11. Schmidt E. G. The Behlen observatory variable star survey: first results (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 1991. — Vol. 102. — P. 1766–1776. — ISSN 0004-6256; 1538-3881doi:10.1086/115999
  12. Gavrilchenko T., Klein C. R., Bloom J. S., Richards J. W. A mid-infrared study of RR Lyrae stars with the Wide-field Infrared Survey Explorer all-sky data release (англ.) // Monthly Notices of the Royal Astronomical Society / D. FlowerOUP, 2014. — Vol. 441, Iss. 1. — P. 715–725. — ISSN 0035-8711; 1365-2966doi:10.1093/MNRAS/STU606arXiv:1312.4643
  13. Alfonso-Garzón J., Domingo A., Mas-Hesse J. M., Giménez A. The first INTEGRAL-OMC catalogue of optically variable sources (англ.) // Astronomy and Astrophysics / T. ForveilleEDP Sciences, 2012. — Vol. 548. — P. 79–79. — 13 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846doi:10.1051/0004-6361/201220095arXiv:1210.0821
  14. N. N. Samus’, Kazarovets E. V., Durlevich O. V., Kireeva N. N., Pastukhova E. N. General catalogue of variable stars: Version GCVS 5.1 (англ.) // Astronomy Reports / D. BisikaloMAIK Nauka/Interperiodica, Springer Science+Business Media, 2017. — Vol. 61, Iss. 1. — P. 80–88. — ISSN 1063-7729; 1562-6881; 0004-6299doi:10.1134/S1063772917010085

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