
aar71 (taara)

aar71 (aar. emm. see. 71, etch. dii. 269006) haah mensa nakshatratil mothya magellanic dhagatil (ell. emm. see.) eka taara aahe. tyache eka chamakdar nila chull mhanoon vargikaran kele gele aahe aanee too ell. emm. see. madheel sarvat chamakdar tanyanpaiki eka aahe. too nagna dolhyanchya β mensey taayachya nairutyela teen kamani-minitant aahe.
nirikshanancha itihas.
aar71 haah dirghkalapasun nila supergiant aanee magellanic dhaganmadhil sarvat tejaswi tanyanpaiki eka mhanoon olakhala jaato. tyala varnakrameey prakar bii 2.5 aay. eae. pii. denyat aala hota.
1974 paryant, aar71 chee chamak sumare 11vya parimanavarun sumare 9.2 parimanaparyant vadhali hotee aanee aitihasik chhayachitran pattyanchya tapasanitun asey disun aale qee purvihi ashach prakarche badal jhaale hote, 1914 aanee 1939 chya sumaras chamak shikharavar hotee. drushya parimanatil vadhisah taache lalsar hone, spasht shitkaran hote. nilya supergiantmadhun honanya 1-1.5 parimananchya asha udrekansah anek hazar kelvin thund hotat, jase qee bolometric luminocity andaje sthir rahate, tevha ess doradus variables mhanoon olakhalya jaananya chalanchya vargache vaishishtya manale jaat asey, jyala aata luminus blue variables mhanatat.
aar71 chaa sphot sumare 1971 teey 1977 paryant tikala aanee nantar too sumare 11 vya tivrateparyant parat lupt jhaala. nondi apoorn aahet, parantu 2006 madhye eka naveen udrek suru jhalyache disun aale, jyat chamak mageel konatyahi nirikshananchya palikade 8.7 parimanaparyant vadhali. tapman dekhil 6,650 keey chya aaspas vikrami pataliparyant thund jhaale aanee prakashamadhye lakshaniy vaadh jhaali aahe. yaa udrekachya vadhidarmyan, sumare 0.00 parimananchya amplitudes niyatkalik prakashatil badal disu lagale.
spectrum.
shantatet (kiman chamak) r71 chey varnapat, urvarit bamar malikesathi, hα aanee hβ chya kamkuvat utsarjan resha aanee shoshan resha darshavite. anek majboot nishiddha utsarjan resha aahet, visheshtah aayanikrut lohachya. spectrumche sahajpane bii varg supergiant mhanoon vargikaran kele jaate, utsarjan aanee nishiddha resha yasarkhya vaishishthye sarvat tejaswi tanyansathi asamanya naheet.
1970 chya dashakat, anek varnakrameey reshanni majboot pii. signa profile vikasit kele, tarr pratibandhit utsarjan resha kamkuvat jhalya aanee akheris nahisha jhalya. itar anek dhatoo shoshan resha disu lagalya aanee spectrum spashtapane thund aii-class taachaa hota.
2012 madhye, asamanyapane tejaswi udrekachya shikharavar asatana, etch. aii. aii. resha duheri-shikhar utsarjan reshanmadhye aanee akheris ulat pii. signi profilemadhye vikasit jhalya. etch. bii. aii. ulate pii. signa profilesathi khoopach kamkuvat utsarjan pankh darshavite aanee itar hydrogen resha konatehi utsarjan darshavit naheet. helium varnakrameey resha purnapane nahisha jhalya, jyamule barech thund tapman soochit hote. dhatunchya shoshan resha drushya varnpatavar varchasva gajavatat, jeey punha thund tapman darshavtat. eka vishesh asamanya vaishishtya mhanje aayanikrut calciumchya jawaljawal-infrared nishiddha utsarjan resha samanyatah keval ubdar hypergiantsmadhye disatat, parantu tyachya mothya udrekadarmyan η carinepasoon dekhil olakhalya jaatat. yaa udrekadarmyan varnakrameey varg eff9 teey jee1 itka usheera asalyacha andaj aahe.
parivartansheelata.
aar71 heey chull tanyanchya chamakdar nilya chull gatachya vaishishtyapurn prakashatil badal anek prakare darshaviteh shantatechya kiman prakashajavalacha dirgh kalavadhi; shantatechya kalat 0.00 peksha qamee parimananchi sookshm-bhinnata; aanee kahee dashakanchya antarane anek varshe tikananya parimanatil kinwa tyahoon adhik kalavadhiche sphot. shantatechya velee taachee tivrata 11 chya aaspas asate, sarvat qamee chamak sumare 11.2 nondavali jaate. 1914,1939 aanee 1970 chya dashakat sphot anukrame andaje 10.2,9.9 aanee 9.8 parimananparyant pohochale.
aar71 chey udrek haloohaloo adhik ujal hott aahet, jaree mojkyach mojkyach vela pahile gele asale taree, 2012 chaa udrek yaa vargatil chalansathi asamanyapane tejaswi asoon, 8.7 chya tivratechya shikharavar pohochala aahe. kamal ujalanichya vadhidarmyan vikasit jhalelya sumare 0.2 parimananchya niyatkalik badalanmadhye dekhil heey asamanya aahe. yaa badalancha kalavadhi vadhala kaaran chamak sumare 425 divasanparyant vadhali.
malmatta.
aar71 haah dnyat asalelya sarvat tejaswi tanyanpaiki eka aahe aanee 2012 chya udrekadarmyan magellanic dhaganmadhye sarvat tejaswi aahe. shantatechya kalat, teey itar atishay tejaswi prarambhik bii supergiantsasarkhe disate, sumare 15,000 keey. aanee. yaa prakarchya tanyanchi trijya changlya prakare paribhashit keleli nahee kaaran tyat ghandat tarakeey vaara asato aanee darr tees laakh varshanni tyache vastuman qamee hott aahe. 2/3 chya optical kholivar asalelya taramargachya prushthbhagachi pramanit vyakhya trijya dete, parantu yaa prakarchya taayachya prushthbhagachi adhik vastavadi vyakhya 20 chya optical kholivar aahe jee trijya dete.
jaree bolometric prakash mothya pramanat badalat nasla taree, udrekadarmyan, aar71 thund hoto aanee vistarato, jeey chamakdar nilya chalasathi vaishishtyapurn vartan aahe. thund tapmanamule, drushya tarangalambivar adhik vidyutchumbakiy kiranotsarg utsarjit hoto aanee drushya chamak vadhate. 2012 chya asamanya udrekadarmyan, taache tapman sadharan chamakdar nilya chull kiman tapman sumare 8,500 keey chya palikade thund jhaale, jeey 6,650 keey itake hote aanee trijya sumare paach patine vadhali. prakashahi varvar pahata vadhat gela, jeey itar ell. bii. vhee. madhye disun aale aahe parantu asamanya asalyache manale jaate. heey anubhavjanya humphress-davidson maryadechya palikade asanyachi shakyata aahe jyavar taare tyanchya uchch prakashamule asthir hotat.
asamanya thund udrekadarmyan darshavilele chamak badal heey rangbhed chull aanee aar. vhee. tauri chalanni darshavilelya badalanshi sambandhit asoo shakatat. visheshtah qamee tapmanamule aar71 asthiratechya pattyachya jawal yete jithe tapman-sambandhit apardarshaktet badal jhalyamule vatavaran niyamitpane spandane dete.
utkranti.
eka motha taara wolf-reate taara bananyapurvi chamakdar nilya chalpatoonna paramparikpane alpakalin asthir sankraman sthiteet manale jaate. ell. bii. vhee. heey dwaiti vastuman hastantaranacha parinam asoon vastuman vadhavnara taara eka prachand aanee asthir chamakdar nila chull banato yaa siddhantadvare yala aavhan denyat aale aahe. aar71 haah eka atishay motha taara asalyache disate joou vastuman tanyanchya samoohamadhye tayar jhaala nahee, jyamule too suruvatila khoop motha taara mhanoon tayar jhaala nasanyachi shakyata aahe. tyaeivaji, nantar ekhadya sathidarakadun vastuman midavalyane teey mothe jhaale asave.
donhi rachana paddhatisathi, aar71 sathee utkranticha pudhcha tappa hydrogen-mukt landga-reate taara asanyachi shakyata aahe. akheris tyache gabha kosalane apariharya aahe, jyamule supernova houu shakato. tathapi, aar71 sarkhya tanyanche praman teey nasht hoiparyant uttarottar adhik hinsak sphotanmadhun jaat asalyache disate. tasech, kahee kinwa serve landga-reit taare chamakdar supernova sphot naan karata thet krishnagahanyat kosaloo shakatat.