Azụ (ìgwè kpakpando)

Foto nke ìgwè kpakpando Pisces, azụ

 

.Pisces bụ nke nke zodiac .  Nnukwu nnukwu ya – na asterism bụ isi a na-ele anya n'alọ omenala ndị Europe kwa oge ochie nke Gris na Rom dị ka azụ dị anya n'azụ n'otu eriri nke ọ ALA na-akpata na elu – dị na Northern Celestial Hemisphere  .  Akara mbara igwe ochie ya bụ</img> (♓︎).  Aha ya bụ Latin maka "azụ".  Ọ dị n'etiti Aquarius, nke yiri nha, na ndị na-eme egwuregwu na Aries, nke dị egwu, n'ebe ọmụmụ.  Eclipti na ndị equator na-agbakọta n'ime m ikemịka na Virgo .  Nke a ụmụaka na-enwe na-agafe ụzọ n'elu equator, na nkezi, n'ihe dị ka ebe a na mbara igwe, na March equinox .

The March equinox dị ugbu a na Pisces, n'ihi na ndịda nke ω Psc, na, n'ihi precession, ji izi ozi drifting n'ihi anọ, dị nnọọ n'okpuru ọchịchị azụ kwupụta Aquarius.

  • Alrescha ("ụdọ"), ma ọ bụghị Alfa Piscium (α Psc), 309.8 lightyears, klas A2, ịdị ukwuu 3.62. Kpakpando ọnụọgụ abụọ na-agbanwe agbanwe. [1]
  • Fumalsamakah [2] ("ọnụ azụ"), ma ọ bụghị Beta Piscium (β Psc), 492 lightyears, klas B6Ve, ịdị ukwuu 4.48
  • Delta Piscium (δ Psc), afọ ọkụ 305, klas K5III, ịdị ukwuu 4.44. Dị ka kpakpando ndị ọzọ dị nso na eklips, Delta Piscium nọ n'okpuru mgbaasị ọnwa.
  • Epsilon Piscium (ε Psc), 190 lightyears, klas K0III, ịdị ukwuu 4.27. Nwere onye ndoro-ndoro ochichi exoplanet.
  • Revati [2] ("ọgaranya"), ma ọ bụghị Zeta Piscium (ζ Psc), 148 lightyears, klas A7IV, ịdị ukwuu 5.21. Sistemụ kpakpando quintuple.
  • Alpherg ("na-efu"), [2] ma ọ bụghị Eta Piscium (η Psc), 349 lightyears, klas G7 IIIa, ịdị ukwuu 3.62. Ọ bụ mgbanwe Gamma Cassiopeiae nwere oghere ndọta na-adịghị ike.
  • Torcular ("eriri"), [2] ma ọ bụghị Omicron Piscium (ο Psc), 258 lightyears, klas K0III, ịdị ukwuu 4.2. Ọ bụ nnukwu kpakpando na-acha uhie uhie n'alaka kwụ ọtọ .
  • Omega Piscium (ω Psc), afọ ọkụ 106, klas F4IV, ịdị ukwuu 4.03. Ọ bụ ụdị F-kpakpando nke bụ ma subgiant ma ọ bụ na isi usoro.
  • Gamma Piscium (γ Psc), afọ ọkụ 138, ịdị ukwuu 3.70. Kpakpando ahụ na-akwado exoplanet nke achọpụtara na 2021. [3] Ọ nwere ụdị spectral nke G8 III. [4]
  • Kpakpando Van Maanen bụ dwarf ọcha naanị anyị kacha ama ama, nke nwere oke nchara. Ọ dị ihe dị ka 2° n'ebe ndịda kpakpando Delta Piscium, na-enwe mmegharị ahụ kwesịrị ekwesị dị elu nke 2.978″ kwa afọ n'akụkụ ọnọdụ 155.538°. Ọ dị nso na anyanwụ karịa dwarf ọcha ọ bụla ọzọ nọ naanị ya. Ọ na-agwụkwa ike ka e jiri anya gba ọtọ hụ ya . [5] Dị ka dwarfs ndị ọzọ na-acha ọcha, ọ bụ kpakpando dị oke oke: a na-eme atụmatụ na oke ya dị ihe dịka 67% nke Sun's, ma ọ nwere nanị 1% nke radius anyanwụ . Igwe ikuku dị n'èzí nwere okpomoku dị ihe dịka 6,110 K, [6] nke dịtụ mma maka dwarf ọcha. Ka dwarf niile na-acha ọcha na-ekpochapụ ọkụ ha ka oge na-aga, enwere ike iji ọnọdụ okpomọkụ a tụọ afọ ya, chere na ọ dị ihe dịka 3. ijeri afọ. A na-eche na mbụ dị ka kpakpando ụdị F tupu amata njirimara nke dwarfs ọcha.

. [7]M74 bụ ọnya na-adịghị mma (ụdị Sc) gburugburu mkpọ na Pisces, nke a imera n'ebe dị anya nke nde afọ 30 ( redshift 0.0022).  O ọtụtụ nwere ike ndị na-eto eto na nebulae ndị mgbasa ya, na-egosi nnukwu mpaghara ozi .  Onye France na-ekiri mbara igwe bụ Pierre Méchain emechira ya na 1780. Achọpụtara ụdị supernova II-P na mpaghara mpụta nke M74 site n'aka Robert Evans na June 2003;  Ozi nke mere supernova ka e ihu mara dị ka onye na-acha uhie nke nwere oke ihe 8. Ọ bụ onye nkuzi na-akpa nke otu M74 [8] [9]

Preview of references

  1. Wraight (2012). "A photometric study of chemically peculiar stars with the STEREO satellites - I. Magnetic chemically peculiar stars". Monthly Notices of the Royal Astronomical Society 420 (1). DOI:10.1111/j.1365-2966.2011.20090.x. 
  2. 2.0 2.1 2.2 2.3 Naming Stars. IAU.org. Retrieved on 8 August 2018.
  3. Teng, Huan-Yu; Sato, Bun'ei; Takarada, Takuya; Omiya, Masashi; Harakawa, Hiroki; Izumiura, Hideyuki; Kambe, Eiji; Takeda, Yoichi; Yoshida, Michitoshi; Itoh, Yoichi; Ando, Hiroyasu; Kokubo, Eiichiro (2022), "Regular radial velocity variations in nine G- and K-type giant stars: Eight planets and one planet candidate", Publications of the Astronomical Society of Japan, 74: 92–127, arXiv:2112.07169, doi:10.1093/pasj/psab112
  4. Baines (2018). "Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer". The Astronomical Journal 155 (1). DOI:10.3847/1538-3881/aa9d8b. 
  5. Cite warning: <ref> tag with name burham1978 cannot be previewed because it is defined outside the current section or not defined at all.
  6. Cite warning: <ref> tag with name Limoges2015 cannot be previewed because it is defined outside the current section or not defined at all.
  7. R. B. Tully (1988). Nearby Galaxies Catalog. Cambridge University Press. ISBN 978-0-521-35299-4. 
  8. A. Garcia (1993). "General study of group membership. II – Determination of nearby groups". Astronomy and Astrophysics Supplement 100: 47–90. 
  9. G. Giuricin (2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". Astrophysical Journal 543 (1): 178–194. DOI:10.1086/317070.