Uphononongo lomfanekiso othathwe yi-JWST kukhokelele ekufunyanweni komnyele kwindalo yangaphambili malunga nebhiliyoni yeminyaka emva kogqabhuko-dubulo olukhulu olutyikitya ukukhanya kwayo okubangelwa yirhasi ye-nebular eqaqambisa iinkwenkwezi zayo. Ngoku ebizwa ngokuba yi-GS-NDG-9422, lo mnyele untsonkothile ngokwemichiza kwaye awunazo iinkwenkwezi zePopulation III. Ngokufanayo, owona mnyele ukude we-JADES-GS-z14-0 wenziwa kwindalo yokuqala malunga ne-290 yezigidi zeminyaka emva kokuba iBig Bang yafunyaniswa ineentsimbi. Ngokokuqonda kwangoku, isizukulwana sokuqala seenkwenkwezi zendalo iphela kufuneka ibe ziinkwenkwezi zePopulation III ezinoziro zesinyithi. Kwi-astronomy, nayiphi na into enzima kune-helium ithathwa njengesinyithi. Iikhemikhali ezingezizo iintsimbi ezifana neoksijini, initrogen, njl.njl zisinyithi ngokwemeko yecosmological. Iinkwenkwezi zifumana isinyithi kwisizukulwana ngasinye emva kwesiganeko se-supernova.
Besebenzisa umfanekiso othathwe yi-NIRSpec (Near-Infrared Spectrograph) isixhobo sikaJames Webb Space telescope (JWST), abaphandi baye bachonga umnyele owahlukileyo kwindalo iphela ngotshintsho olubomvu lwe-Z= 5.943 olungqamana malunga neminyaka eyibhiliyoni emva kogqabhuko-dubulo olukhulu. Ngoku ebizwa ngokuba yi-GS-NDG-9422, lo mnyele unokuba linqanaba elilahlekileyo le-galactic evolution phakathi kweenkwenkwezi zokuqala zendalo yonke kunye neminyele esekwe kakuhle.
Umfanekiso wechaphaza elimfiliba lomnyele i-GS-NDG-9422 unotyikityo lokukhanya olulodwa. Umthombo wokukhanya obonwa kulo mfanekiso yigesi eshushu yomnyele. Ukukhanya akuzange kuphume kwiinkwenkwezi zawo.
Ngokungafaniyo neenkwenkwezi ezinkulu kwindalo yethu yengingqi ezinobushushu obumalunga nama-40,000 ukuya kuma-50,000 °C, iinkwenkwezi ezikwigalaksi ye-GS-NDG-9422 zishushu ngokugqithisileyo. Mhlawumbi, lo mnyele wawukwinqanaba lokubunjwa kweenkwenkwezi ngaphakathi kwi-nebula yegesi eshinyeneyo evelisa inani elikhulu leenkwenkwezi ezinkulu, ezishushu xa ukukhanya kwakushiya lo mnyele malunga ne-12.8 yeebhiliyoni zeminyaka eyadlulayo ukufikelela kwi-JWST ngoku. Uqwalaselo luhambelana nemodeli yekhompyuter ukuba ukubetha rhoqo kwerhasi ye-nebular ziifotoni zeenkwenkwezi ezishushu zafudumeza irhasi ye-nebular ukuya ngaphezulu kwe-80,000 °C iyenza ukuba ikhanye ngakumbi kukukhanya okukufutshane kwe-infrared kuneenkwenkwezi.
Umnyele olawulwa kukukhanya kwe-nebular (kunokukhanya kweenkwenkwezi) uhambelana nemekobume yesizukulwana sokuqala seenkwenkwezi zendalo iphela. Iinkwenkwezi kwiminyele enjalo ziyiPop. Iinkwenkwezi ze-III ezine-zero metallicity. Nangona kunjalo, ngokumangalisayo, i-galaxy GS-NDG-9422 ayinayo iinkwenkwezi zePopulation III. Idatha ye-JWST ibonisa ukuba i-GS-NDG-9422 iyinkimbinkimbi yekhemikhali.
Imeko yeminyele ekude kakhulu iJADES-GS-z14-0 eyenziwe kwindalo yangaphambili malunga ne-290 yezigidi zeminyaka emva kweBig Bang isabhida ngakumbi. Iinkwenkwezi kulo mnyele kufuneka zibe yiPop. Iinkwenkwezi ezi-III ezine-zero metallicity nangona kunjalo, uphononongo lweepropathi ze-infrared ze-JADES-GS-z14-0 kumnyele zityhila ubukho beoksijini nto leyo ethetha ukutyebisa ngesinyithi okuthetha ukuba izizukulwana zeenkwenkwezi kufuneka zibe sele ziyigqibile imijikelo yazo yobomi.
Iinkwenkwezi zokuqala kwindalo iphela zinentsimbi enguziro okanye zinesinyithi esiphantsi kakhulu. Babizwa ngokuba ziinkwenkwezi zePop III (okanye iinkwenkwezi zePopulation III). Iinkwenkwezi ezisezantsi zentsimbi ziinkwenkwezi zePop II. Iinkwenkwezi ezincinci zinemixholo yentsimbi ephezulu kwaye zibizwa ngokuba yi "Pop I stars" okanye iinkwenkwezi zentsimbi yelanga. Ngomgangatho ophezulu we-1.4% wesinyithi, ilanga yinkwenkwezi yakutshanje. Kwi-astronomy, nayiphi na into enzima kune-helium ithathwa njengesinyithi. Iikhemikhali ezingezizo iintsimbi ezifana neoksijini, initrogen njl.njl zisinyithi ngokwemeko yecosmological. Iinkwenkwezi zifumana isinyithi kwisizukulwana ngasinye esilandela isiganeko se-supernova. Ukwandisa umxholo wesinyithi kwiinkwenkwezi kubonisa ubudala obuncinane.
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Iingxelo:
- Cameron AJ, okqhubekayo 2024. Iminyele eyonganyelwe yi-Nebular: ulwazi malunga ne-stellar first mass function at high redshift. Ipapashwe: 21 Juni 2024. IZaziso zeNyanga zeRoyal Astronomical Society, uMqulu 534, ukukhutshwa 1, Okthobha 2024, amaphepha 523–543, DOI: https://doi.org/10.1093/mnras/stae1547
- Iindaba zeNASA-KwiGalaxy eOdd, iWebb yeNASA ifumana unxibelelwano olunokwenzeka olulahlekileyo kwiNkwenkwezi yokuQala. Iyafumaneka e https://science.nasa.gov/missions/webb/in-odd-galaxy-nasas-webb-finds-potential-missing-link-to-first-stars/
- Prasad U., 2024. Indalo yamandulo: Eyona Galaxy ikude kakhulu “JADES-GS-z14-0″ Imiceli mngeni yeeModeli zeGalaxy zoKwakha. Inzululwazi yaseYurophu. Ipapashwe nge-12 ka-Agasti 2024. Ifumaneka e https://www.scientificeuropean.co.uk/sciences/space/early-universe-the-most-distant-galaxy-jades-gs-z14-0-challenges-galaxy-formation-models/
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