Umphakathi wezinkanyezi uhlonze umhlaba owephula amarekhodi: iplanethi ezulazulayo lokho kukhuluphalisa umuntu ijubane elingakaze libonwe ngaphambili, ukugwinya igesi nothuli oluvela endaweni ezungezile ngesilinganiso esingaba 6.000 billion wamathani ngomzuzwanaLokhu kuziphatha, okuqashelwa phansi nasemkhathini, kuchaza kabusha esasikwazi mayelana nendlela ezikhula ngayo izinto ezinobunzima beplanethi ezulazulayo ngaphandle kwenkanyezi.
I-protagonist ngu Cha 1107-7626, cishe ibanga leminyaka engu-620 ukukhanya ku-Chameleon yomlaza, enesisindo esilinganiselwa phakathi kokuphindwe kahlanu kuya kweshumi kuneJupiter. Izungezwe i-disk lapho idla khona, kodwa okugqamayo ukuthi yayo isifiso sokudla siyahlukahluka ngokuhamba kwesikhathi, ukushintshana kwezigaba ezithule nokuqhuma kokukhula okukhulu kakhulu.
Ukutholwa kanye nengqikithi yayo
Ukulandelela kuyayiholela UVictor Almendros-Abad ne Isibonakude esikhulu kakhulu (VLT) kusukela e-European Southern Observatory. Ithimba lithole ukuthi izinga lokutholwa lisuke ekubeni lingasebenzi entwasahlobo ka-2025 laya ku- isiqongo esingajwayelekile phakathi kukaJuni no-August wonyaka ofanayo, lapho iplanethi iqala ukumunca izinto kudiski ngenani elirekhodiwe.
Ucwaningo, lwamukelwe ukuthi lushicilelwe ku Izincwadi ze-Astrophysical Journal, kubonisa ukuthi akuwona wonke amaplanethi akhula kancane: amanye, njengaleli iplanethi mass into ezintantayo ngokukhululekile, zihlushwa iziqephu ezimfushane, ezinodlame ezisheshisa ukuvela kwazo.
Into Cha 1107-7626
I-Cha 1107-7626 ayizungezi noma iyiphi inkanyezi: iyi-a iplanethi ezulazulayo icwiliswe endaweni yayo yomdabu, lapho idiski yegesi nothuli iwela ngakuyo. Lokhu kugeleza kwento, okwaziwa ngokuthi i-accretion, uphethiloli ochaza ukwanda kwawo ngokushesha kwesisindo.
Ngesikhathi sokuqubuka kuka-2025, izinga lokwehla liphindaphindeke ngo izikhathi eziyisithupha kuya kweziyisishiyagalombili uma kuqhathaniswa nezinyanga ezedlule, ifinyelela inani elilinganiselwe lamathani ayizigidi eziyizinkulungwane eziyi-6.000 ngomzuzwana. Lesi isiqephu esinamandla kakhulu esiqoshwe iplanethi yanoma yiluphi uhlobo, iqiniso uphawu lomlando kulesi sikhundla.
Ukukunikeza umbono wobukhulu, ukube uMhlaba ubuqongelele isisindo sawo ngalelo zinga, ubuyofinyelela usayizi wawo wamanje cishe iminyaka 31.500, ukuphefumula ngesikhathi se-cosmic uma kuqhathaniswa namashumi ezigidi zeminyaka okwayithatha ngempela.
Kwakalwa kanjani
I-accretion jump itholwe nge-spectrograph I-VLT X-shooter, oGwadule lwase-Atacama (eChile), olukwazi ukumboza uhla olubanzi kakhulu lwe-spectral oluzwela kakhulu. Izinguquko ekukhanyeni nasezilayini ezikhipha umkhondo ezilandela igesi efikayo ziveze i ukungena okusheshisiwe okokusebenza.
Ukuze kuhlanganiswe umphumela, ithimba lihlanganise lokhu kubuka nedatha evela ku- James Webb Space Telescope kanye nezingobo zomlando ezivela ensimbini ye-SINFONI, futhi ku-VLT. Ukuhlaziywa ngaphambi nangesikhathi sokuqhuma kubonise ukwanda okuphindwe kaningana emigqeni yokuguquguquka, okuhambisana nesenzakalo sokwenyuka okungazelelwe nesinamandla.
Ngaphezu kwevelu yesayensi uqobo, umsebenzi ukhombisa amandla e-spectroscopy yekhwalithi ephezulu okufanele ilandelwe eduze nesikhathi sangempela. ukuvela kwezinto ezibuthakathaka kakhulu, okubalulekile lapho usebenza namaplanethi angenazinkanyezi akhipha ukukhanya okuncane.
Imithelela yomsuka wayo
Ukutholwa kunikeza izinkomba kumbuzo omdala: ingabe lezi zinto amaplanethi akhishiwe yezinhlelo zabo noma bakhe njengezinkanyezi ezinobuningi obuphansi kakhulu? Ukuba khona kokuqhuma kwe-accretion kuphakamisa ukuthi, okungenani kwezinye izimo, indlela yabo ifana neyo ama-protostars.
Isiqephu se-Cha 1107-7626 sibonakala sixhumene ne umsebenzi kazibuthe, inhlamvu evamile ezinkanyezini ezisencane manje nayo evela ezweni elinabantu abaningi. Iqiniso lokuthi iplanethi ekhohlakele ibonisa lesi siginesha libonisa ukuthi inendawo enozibuthe ekwazi ukuhambisa izinto futhi ibangele lezi zenzakalo.
Esinye isiqeshana esibalulekile yikhemikhali yediski: ngesikhathi sokuqhuma kwatholakala umusi wamanzi okwakungakaze kuvele ngaphambili, ukuziphatha okulotshwe ezinkanyezini ekwakhekeni futhi kwabonwa ngokokuqala ngqá ngale ndlela eplanethini.
Yini elandelayo?
Ukuthola nokufunda amaplanethi antantayo mahhala akulula: anjalo izinto ezibuthakathaka futhi akunangqondo. Ukufika kwe-ESO's Extremely Large Telescope (ELT) kuthembisa ukweqa kwe-quantum, ngesibuko esikhulu kanye nezinsimbi ezisezingeni eliphezulu ukuze kutholwe amalungu engeziwe alesi sibalo.
Ezimweni eziningi, umphakathi uzokwazi ukwenza imephu kangcono ukuthi mangaki amaplanethi akhohlakele akhona, akhombisa kangaki ukuqhuma kokukhula nokuthi babelana ngezinga elingakanani umlando wabo nezinkanyezi ezincane.
Ukubuka kuchaza i-Cha 1107-7626 njengelabhorethri yemvelo eyingqayizivele: a izwe elinesizungu ukushintshana phakathi kweziqephu ezolile nezinyakazayo zokwanda, kunikeza imikhondo mayelana nemvelaphi yakho futhi kumaka izinga lokukhula eliphakeme kakhulu elirekhodwe iplanethi, okuvula iwindi elikhethekile eliya ezigabeni zokuqala zokubunjwa kwamaplanethi.
