Gliese 86
| Nchịkọta nchake | Eridanus  |
|---|---|
| epoch | J2000.0 |
Àtụ:Starbox observe 2s Àtụ:Starbox character Àtụ:Starbox astrometry Àtụ:Starbox orbit Àtụ:Starbox detail Àtụ:Starbox catalog Àtụ:Starbox reference Àtụ:Starbox endGliese 86 (13 G. Eridani, HD 13445) bụ kpakpando K-ụdị isi-usoro ihe dị ka 35 light-years na kpakpando nke Eridanus. E gosipụtara na obere kpakpando na-acha ọcha na-agba kpakpando mbụ gburugburu. 'afọ 1998, European Southern Observatory kwupụtara na mbara ala dịpụrụ adịpụ na-agba kpakpando ahụ gburugburu.
Akụkụ kpakpando[dezie | dezie ebe o si]
Onye ibe ya bụ isi (Gliese 86 A) bụ kpakpando K-ụdị nke ụdị K1V. Njirimara ma e jiri ya tụnyere Anyanwụ bụ 83% nke ịdị arọ, 79% nke radius, na 50% nke ìhè. Kpakpando ahụ nwere nnukwu Mbara ala Jovian na-agba gburugburu.
Gliese B bụ obere kpakpando na-acha ọcha nke dị gburugburu 21 AU site na kpakpando bụ isi, na-eme ka usoro Gliese 86 bụrụ otu n'ime binaries kachasị sie ike a maara na ọ na-akwado mbara ala extrasolar. [1][2] chọpụtara ya na 2001 ma na mbụ na-eche na ọ bụ obere anụnụ na-acha nchara nchara, mana nchọpụta dị elu na 2005 tụrụ aro na ihe ahụ nwere ike ịbụ obere anụnụ ọcha, ebe ọ bụ na ụyọkọ ya anaghị egosipụta ihe ndị na-amịkọrọ mkpụrụ ndụ nke na-adịkarị na obere anụnụ. [3]'iche na obere kpakpando na-acha ọcha nwere ihe dị ka ọkara nke Anyanwụ nakwa na usoro a hụrụ na nyocha ọsọ radial bụ n'ihi Gliese 86 B, usoro okirikiri maka kpakpando a gburugburu Gliese 86 A nwere ọkara isi axis nke 18.42 AU na eccentricity nke 0.3974 . [1] Mgbe kpakpando abụọ ahụ na usoro isi, nkewa dị n'etiti kpakpando biyu ahụ dị nso, na ihe dị ka 9 AU. ndị ọzọ maka dwarf -acha ọcha na-enye ya oke nke 55% nke ịdị arọ nke Anyanwụ [1] na okpomọkụ nke ihe dị ka 8200 K. [2]
Usoro mbara ala[dezie | dezie ebe o si]
[4] mbụ nke astrometric nke e mere na nyocha mbara igwe Hipparcos na-atụ aro na mbara ala ahụ nwere ntụgharị okirikiri nke 164.0 ° na ịdị arọ ugboro 15 nke Jupiter, nke ga-eme ka ihe ahụ bụrụ obere ihe na-acha nchara nchara. Otú [5] dị, nyocha ọzọ na-atụ aro na ọnụọgụ Hipparcos ezughi oke iji chọpụta usoro astrometric nke ndị enyi substellar, ya mere, a maghị ntụgharị gburugburu na ezi ịdị arọ nke mbara ala ahụ. [6] bụ Leonhard Euler Telescope nke Switzerland 1.2 m nke Geneva Observatory na-arụ ọrụ chọpụtara ya. guzobere ihe dị otú ahụ site na Diski protoplanetary nke e bepụrụ na 2 AU site na kpakpando nne.
Ntụle ọsọ radial nke Gliese 86 na-egosi usoro ahịrị ozugbo ewepụrụ mmegharị n'ihi mbara ala a. Nke a nwere ike ijikọta ya na mmegharị nke onye ibe ya na-acha ọcha.Àtụ:OrbitboxPlanet begin Àtụ:OrbitboxPlanet Àtụ:Orbitbox end
Hụkwa[dezie | dezie ebe o si]
- Nnyocha map nke 1961 Zeta Reticuli Incident
- Ndepụta nke mbara ala ndị dịpụrụ adịpụ
- Ndepụta nke mbara ala ndị a chọtara tupu afọ 2000 - Gliese 86b
Edensibia[dezie | dezie ebe o si]
- ↑ Mugrauer, M. (2005). "Gl86B: a white dwarf orbits an exoplanet host star". Monthly Notices of the Royal Astronomical Society: Letters 361 (1): L15–L19. DOI:10.1111/j.1745-3933.2005.00055.x.
- ↑ Els, S. G. (2001). "A second substellar companion in the Gliese 86 system. A brown dwarf in an extrasolar planetary system". Astronomy and Astrophysics 370 (1): L1–L4. DOI:10.1051/0004-6361:20010298.
- ↑ Lagrange, A.-M. (2006). "New constrains on Gliese 86 B. VLT near infrared coronographic imaging survey of planetary hosts". Astronomy and Astrophysics 459 (3): 955–963. DOI:10.1051/0004-6361:20054710.
- ↑ Han (2001). "Preliminary astrometric masses for proposed extrasolar planetary companions". The Astrophysical Journal Letters 548 (1): L57–L60. DOI:10.1086/318927.
- ↑ Pourbaix, D. (2001). "Screening the Hipparcos-based astrometric orbits of sub-stellar objects". Astronomy and Astrophysics 372 (3): 935–944. DOI:10.1051/0004-6361:20010597.
- ↑ Southern Sky extrasolar Planet search Programme.
Njikọ mpụga[dezie | dezie ebe o si]
- Gliese 86 / HR 637 AB. SolStation. Retrieved on 2008-08-02.