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Atmosfera Plutona rozridzhena gazova obolonka sho otochuye Pluton Skladayetsya z rechovin sho viparovuyutsya z jogo poverhni azotu N2 z nevelikimi domishkami metanu CH4 ta chadnogo gazu CO 1 2 Mistit sharuvatu imlu utvorenu jmovirno skladnishimi spolukami sho sintezuyutsya z cih gaziv pid vplivom zhorstkogo viprominyuvannya 3 Primitna silnimi j ne do kincya zrozumilimi sezonnimi zminami sho vinikayut cherez osoblivosti orbitalnogo ta osovogo obertannya Plutona 1 Nichnij bik Plutona Vidno nizhni shari atmosferi pidsvicheni Soncem Znimok zonda New Horizons kolori blizki do spravzhnih Tisk atmosferi Plutona bilya poverhni stanovit 1 Pa sho v 100 tisyach raziv menshe nizh na Zemli dani kosmichnogo aparata New Horizons 2015 2 4 Temperatura na poverhni lezhit u mezhah 40 60 K 1 ale z visotoyu shvidko roste cherez sprichinenij metanom parnikovij efekt Na visoti blizko 30 km vona syagaye 110 K pislya chogo povilno padaye 4 5 Pluton yedinij transneptunovij ob yekt u yakogo viyavleno atmosferu 5 Najbilsh shozha vona na atmosferu Tritona a za deyakimi oznakami nagaduye navit atmosferu Marsa 6 7 Atmosferu Plutona doslidzhuyut iz 1980 h rokiv za dopomogoyu fotometrichnih sposterezhen pokrittiv nim zirok 8 9 a takozh spektralnimi metodami 10 11 6 2015 roku yiyi doslidiv zblizka kosmichnij aparat New Horizons 2 4 Zmist 1 Sklad 2 Imla 3 Temperatura ta termichna struktura 4 Tisk 5 Sezonni zmini 6 Rozsiyuvannya 7 Vzayemodiya z sonyachnim vitrom 8 Istoriya doslidzhen 9 Primitki 10 PosilannyaSklad RedaguvatiOsnovnij skladnik atmosferi Plutona azot Koncentraciya metanu zgidno z danimi zonda New Horizons stanovit blizko 0 25 2 za nazemnimi sposterezhennyami bulo otrimano znachennya 0 4 0 6 u 2008 roci 11 ta 0 3 0 4 u 2012 6 Dlya vmistu chadnogo gazu ye zrobleni za nazemnimi sposterezhennyami ocinki 0 025 0 15 2010 12 ta 0 05 0 075 2015 13 Pid diyeyu zhorstkogo viprominyuvannya z nih utvoryuyutsya riznomanitni skladnishi spoluki sho ne ye letkimi pri temperaturah poverhni Plutona 14 15 i postupovo osidayut na neyi Ce zokrema etan etilen acetilen bilsh vazhki vuglevodni nitrili 16 3 17 cianovoden 18 ta visokomolekulyarni spoluki tolini sho nadayut Plutonu yak i deyakim inshim dalekim vid Soncya tilam korichnyuvatij kolir 2 Dlya etilenu ta acetilenu ye ocinki vmistu zrobleni za danimi New Horizons 0 0001 ta 0 0003 vidpovidno 2 Najbilsh letkij komponent atmosferi Plutona azot na drugomu misci monooksid vuglecyu na tretomu metan Pokaznikom letkosti ye tisk nasichenoyi pari Pri temperaturi 40 K znachennya blizke do minimalnogo dlya poverhni Plutona 1 vin stanovit poryadku 10 Pa dlya azotu 1 Pa dlya monooksidu vuglecyu i 0 001 Pa dlya metanu Zi zbilshennyam temperaturi vin rizko zrostaye i pri temperaturi 60 K blizkij do maksimalnoyi dlya poverhni 1 zbilshuyetsya do 10 000 Pa 3000 Pa ta 10 Pa vidpovidno Tisk nasichenoyi pari vazhchih za metan vuglevodniv a takozh dioksidu vuglecyu lishayetsya nehtovno malim poryadku 10 5 Pa abo she menshim sho oznachaye praktichnu vidsutnist u nih letkosti v umovah Plutona prinajmni v holodnih nizhnih sharah atmosferi Voda amiak ta cianovoden ye neletkimi navit pri temperaturi 100 K harakternij dlya verhnoyi atmosferi 15 14 Dlya drugoryadnih skladnikiv atmosferi Plutona mozhna ochikuvati bilshih nizh dlya azotu vidhilen vid rivnovagi z poverhnevimi lodami i silnishih chasovih ta prostorovih zmin koncentraciyi 6 Odnak dlya metanu ne vdalosya nadijno viyaviti yiyi zmin ni z visotoyu prinajmni v nizhnij atmosferi ni z dovgotoyu ni z chasom 6 19 Ale z viddalennyam Plutona vid Soncya j absolyutnij i vidnosnij vmist metanu maye zmenshuvatisya na sho vkazuye zalezhnist tisku nasichenoyi pari jogo ta azotu vid temperaturi 19 15 20 Primitno sho koncentraciya metanu na 2 poryadki visha za rozrahovanu za zakonom Raulya na osnovi jogo koncentraciyi v poverhnevomu lodi ta spivvidnoshennya tisku nasichenoyi pari jogo ta azotu 10 6 Prichini cogo nevidomi Odna gipoteza poyasnyuye ce nayavnistyu na poverhni dilyanok vidnosno chistogo metanovogo lodu a insha pidvishenim vmistom metanu v tonkomu poverhnevomu shari zvichajnoyi sumishi lodiv 6 20 Cherez sezonni zmini osvitlennya poverhni letki lodi migruyut planetoyu viparovuyutsya v odnih miscyah i kondensuyutsya v inshih Za deyakimi ocinkami sezonni zmini tovshini yih sharu syagayut velichin poryadku metra 9 Ce razom zi zminoyu kuta zoru prizvodit do pomitnih zmin yaskravosti j zabarvlennya Plutona 6 Metan ta chadnij gaz popri malij vmist vplivayut na temperaturu atmosferi Plutona pershij yiyi silno nagrivaye 11 a drugij desho oholodzhuye hocha mira cogo oholodzhennya ye spirnoyu 12 5 Imla Redaguvati nbsp Imla v atmosferi Plutona Vidno chislenni okremi shari Nizhche chastina rivnini Sputnik Planum iz navkolishnimi gorami Znimok zonda New Horizons zroblenij cherez 15 hvilin pislya maksimalnogo zblizhennya z Plutonom nbsp Tini vid gir na pripoverhnevij imli 21 Zond New Horizons viyaviv v atmosferi Plutona blakitnu sharuvatu imlu sho ohoplyuye vsyu karlikovu planetu Na znimkah vona syagaye visoti gt 200 km a ultrafioletovim spektrometrom zareyestrovana do rivnya 300 km 22 Na najkrashih znimkah vidno blizko 20 shariv Voni poshiryuyutsya ne menshe nizh 1000 km po gorizontali visota roztashuvannya okremogo sharu mozhe buti desho riznoyu v riznih miscyah 4 Nad pivnichnoyu polyarnoyu oblastyu imla u 2 3 razi shilnisha nizh nad ekvatorialnoyu 22 Tovshina shariv vid 1 do ponad 10 km 22 a vertikalna vidstan mizh nimi poryadku 10 km 4 Nezvazhayuchi na rozridzhenist atmosferi cya imla dovoli pomitna zavdyaki rozsiyanomu nij svitlu navit vdalosya sfotografuvati deyaki detali nichnogo boku Plutona 23 Podekudi na imli vidno dovgi tini vid gir 22 Dlya yiyi normalnoyi optichnoyi tovshini ye ocinki 0 004 2 ta 0 013 4 takim chinom vona zmenshuye intensivnist vertikalnogo promenyu svitla na 1 e 0 004 0 4 abo 1 e 0 013 1 3 a promenyu sho jde po dotichnij do poverhni znachno silnishe Shkala visot imli visota na yakij yiyi shilnist spadaye v e raziv stanovit 45 55 km 2 4 sho priblizno zbigayetsya zi shkaloyu visot tisku dlya serednih shariv atmosferi 8 Na visotah 100 200 km vona padaye do 30 km 4 Rozmir chastok imli neyasnij Yiyi blakitnij kolir vkazuye na radius chastok poryadku 10 nm a spivvidnoshennya yaskravostej pri riznih fazovih kutah na radius gt 100 nm Ce mozhna poyasniti ob yednannyam dribnih desyatki nm chastok u bilshi sotni nm grudki 4 Najimovirnishe imla utvorena chastinkami neletkih spoluk sho sintezuyutsya pid diyeyu zhorstkogo viprominyuvannya z atmosfernih gaziv i povilno vipadayut na poverhnyu 3 2 24 Chas yih osidannya vimiryuyetsya zemnimi dobami abo tizhnyami 22 Rozsharovuvannya imli mozhe buti pov yazano z gravitacijnimi hvilyami na nayavnist yakih v atmosferi vkazuyut i sposterezhennya pokrittiv zirok 2 Hvili zh u svoyu chergu mozhut vinikati vid vitru sho dme nad nerivnostyami relyefu 4 nbsp Kriva poglinannya sonyachnogo ultrafioletu atmosferoyu Plutona pid chas prohodzhennya zonda New Horizons kriz jogo tin I na nizhidnij i na vishidnij gilci vidno harakternij zlam stvorenij imovirno imloyu 2 Jmovirno same imla sprichinyaye zlam na krivij padinnya intensivnosti sonyachnogo viprominyuvannya otrimanij zondom New Horizons pri prohodzhenni kriz tin Plutona div zobrazhennya nizhche rivnya 150 km atmosfera poslablyuye svitlo znachno silnishe nizh vishe 2 Podibnij zlam sposterigavsya i pri pokritti zori 1988 roku i spershu tezh buv interpretovanij yak poslablennya svitla imloyu 25 ale pislya poyavi danih New Horizons bulo vstanovleno sho vin vinikaye perevazhno cherez shvidkij rist temperaturi z visotoyu v nizhnih sharah atmosferi 22 Pri podalshih pokrittyah zirok koli atmosfera Plutona vzhe bula v 2 razi shilnishoyu cogo zlamu majzhe abo zovsim ne bulo 26 8 5 1 Inshu oznaku nayavnosti imli sposterigali pid chas pokrittya 2002 roku Koli Pluton uzhe pokriv zoryu deyaka chastina yiyi svitla zavdyaki zalomlennyu v jogo atmosferi vse zh dosyagala Zemli i viyavilosya sho intensivnist cogo svitla zrostaye z dovzhinoyu hvili prim 1 27 Ce bulo interpretovane yak dovoli nadijna 6 28 oznaka rozsiyuvannya svitla aerozolyami podibno do pochervoninnya Soncya sho shodit Ale pri nastupnih pokrittyah v tomu chisli 29 chervnya 2015 28 cogo yavisha ne bulo 6 a 14 lipnya 2015 New Horizons viyaviv sho kolir u imli Plutona blakitnij 29 Temperatura ta termichna struktura RedaguvatiTroposfera 30 2 Plutona predstavlena lishe tonkim i pererivchastim granichnim sharom en U jogo mezhah temperatura vidnosno stala 4 Vin buv viyavlenij pri prosvichuvanni atmosferi radiohvilyami za dopomogoyu aparatu New Horizons i zareyestrovanij pri zahodi zonda za Pluton ale ne pri vihodi Tovshina cogo sharu stanovila 4 km a temperatura 37 3 K same pri takij temperaturi tisk nasichenoyi pari azotu dorivnyuye sposterezhuvanomu atmosfernomu tisku Mozhlivo granichnij shar skladayetsya z gazu sho neshodavno viparuvavsya z poverhni i she ne zmishavsya z reshtoyu atmosferi Na korist cogo svidchit te sho cej shar sposterigavsya v oblasti rivnini Sputnik Planum velikogo rezervuaru letkih lodiv Viparovuvannya malo vidbuvatisya v chasi sposterezhen chi nezadovgo do nih rozrahunki pokazuyut sho bez vidnovlennya cej shar proisnuvav bi ne bilshe 2 zemnih rokiv 4 Vishe granichnogo sharu pochinayetsya stratosfera oblast de temperatura shvidko zrostaye z visotoyu temperaturna inversiya Shvidkist zrostannya suttyevo rizna v riznih miscyah pri zahodi aparatu za Pluton bulo vimiryano 6 4 0 9 a pri vihodi 3 4 0 9 K km dani dlya nizhnih 10 km stratosferi 4 Za nazemnimi sposterezhennyami cyu velichinu ocinyuvali v 2 2 8 3 15 11 abo 5 5 6 gradusiv na kilometr Zbilshennya temperaturi rezultat parnikovogo efektu sprichinenogo metanom Serednya temperatura poverhni stanovit 42 4 K dani 2005 roku 31 a serednya po atmosferi 90 25 18 K 2008 11 32 12 Na visoti 20 40 km temperatura syagaye maksimumu 100 110 K stratopauza i dali povilno padaye bilya 0 2 K km 5 mezosfera 8 6 5 Prichini cogo padinnya neyasni mozhlivo ce rezultat oholodzhuvalnoyi diyi acetilenu cianovodnyu 4 5 ta abo chadnogo gazu 12 Na visotah bilsh yak 500 km temperatura syagnuvshi 70 K staye staloyu 4 Chasovi zmini temperaturi serednih verhnih shariv atmosferi zgidno z danimi sposterezhen pokrittiv zirok neznachni I 1988 i 2002 i 2006 roku vona bula odnakovoyu v mezhah pohibki i stanovila bilya 100 K z neviznachenistyu poryadku 10 K hocha tisk zris udvichi 27 8 Znachnoyi zalezhnosti temperaturi vid shiroti ta chasu dobi za cimi danimi znajdeno ne bulo nad usiyeyu poverhneyu temperatura viyavilasya priblizno odnakovoyu Ce uzgodzhuyetsya z teoretichnimi danimi sho peredbachayut shvidke peremishuvannya atmosferi 6 Odnak New Horizons 2015 roku sposterigav pomitnu riznicyu mizh krivimi zalezhnosti temperaturi vid visoti na riznih bokah Plutona 4 V atmosferi Plutona vdalosya viyaviti neveliki vertikalni neodnoridnosti temperaturi Voni proyavlyayutsya v rizkih i korotkih spleskah yaskravosti pid chas pokrittiv zirok 26 Velichinu cih neodnoridnostej ocinyuyut u 0 5 0 8 K na intervalah visoti v kilka kilometriv Voni mozhut buti rezultatom gravitacijnih hvil abo turbulentnosti sprichinenih konvekciyeyu abo vitrami 26 Vzayemodiya z atmosferoyu vplivaye na temperaturu poverhni Plutona Rozrahunki pokazuyut sho atmosfera popri duzhe malij tisk zdatna suttyevo zgladzhuvati dobovi kolivannya ciyeyi temperaturi 33 Odnak tam vse zh lishayutsya temperaturni variaciyi velichinoyu blizko 20 chastkovo tomu sho dilyanki poverhni de viparovuyetsya azotnij lid znachno oholodzhuyutsya podibno do oholodzhennya pri viparovuvanni vodi 1 Tisk RedaguvatiTisk atmosferi Plutona duzhe malij i silno zminyuyetsya z chasom Sposterezhennya pokrittiv Plutonom zirok pokazuyut sho mizh 1988 ta 2015 rokom cej tisk postupovo viris priblizno vtrichi hocha z 1989 roku Pluton viddalyayetsya vid Soncya 34 9 33 35 Jmovirno ce naslidok togo sho 1987 roku na pivnichnomu tochnishe pozitivnomu prim 2 polyusi Plutona nastav polyarnij den sho spriyaye viparovuvannyu azotu z polyarnoyi oblasti 26 37 prim 3 a pivdenna pivkulya she nadto tepla dlya jogo kondensaciyi 9 Absolyutni znachennya poverhnevogo tisku zi sposterezhen pokrittiv otrimati vazhko bo prosvititi nizhni shari atmosferi pri comu zazvichaj ne vdayetsya Jogo dovoditsya rozrahovuvati cherez zalezhnist tisku vid visoti yaka tochno ne vidoma bo zalezhit vid harakteru zmini z visotoyu temperaturi Krim togo potribno znati radius Plutona yakij do 2015 roku buv vidomij zi znachnoyu neviznachenistyu Dlya nizki pokrittiv pochinayuchi z 1988 roku tisk rozrahovuvali dlya umovnoyi vidstani vid centru Plutona 1275 km yak viyavilosya zgodom ce 88 4 km vid poverhni 33 9 19 5 Krivi zalezhnosti tisku vid vidstani do centru Plutona otrimani dlya pokrittiv 1988 ta 2002 roku 26 v kombinaciyi z suchasnim znachennyam radiusu Plutona 1187 4 km 2 dayut priblizno 0 4 Pa dlya 1988 roku ta 1 0 Pa dlya 2002 Za spektralnimi danimi bulo rozrahovano tisk 0 94 Pa v 2008 roci ta 1 23 Pa v 2012 roci dlya vidstani vid centru 1188 km 1 4 km vid poverhni 6 Pri pokritti 4 travnya 2013 vdalosya otrimati znachennya tisku znov taki praktichno dlya rivnya poverhni 1190 km vid centru abo 3 4 km vid poverhni 1 13 0 007 Pa 6 Pokrittya 29 30 chervnya 2015 za 2 tizhni do prolotu povz Pluton zonda New Horizons dalo znachennya poverhnevogo tisku v 1 3 0 1 Pa 34 38 Pershi pryami j detalni doslidzhennya najnizhchih shariv atmosferi Plutona vikonav aparat New Horizons 2015 roku Za dopomogoyu prosvichuvannya yiyi radiohvilyami bulo viznacheno sho poverhnevij tisk stanovit 1 Pa abo 10 5 atm pid chas zahodu aparatu za disk Plutona bulo vimiryano 1 1 0 1 a pid chas vihodu 1 0 0 1 Pa 4 Ce priblizno uzgodzhuyetsya zi sposterezhennyami pokrittiv za poperedni kilka rokiv 4 hocha deyaki rozrahunki vkazuvali na te sho dani pokrittiv vidpovidayut udvichi bilshomu tisku 2 39 3 Shkala visot tisku na Plutoni suttyevo zminyuyetsya z visotoyu inshimi slovami zalezhnist tisku vid visoti vidhilyayetsya vid eksponencijnoyi Ce pov yazano z tim sho na riznih visotah silno vidriznyayetsya temperatura Dlya pripoverhnevogo sharu shkalu visot ocinyuyut u 17 19 19 7 km a dlya visot 30 100 km u 50 70 km 4 8 25 Sezonni zmini RedaguvatiCherez vityagnutist orbiti v afeliyi Pluton otrimuye v 2 8 razi menshe tepla nizh u perigeliyi prim 4 Ce maye sprichinyati v jogo atmosferi silni zmini ale v yih detalyah lishayetsya chimalo neyasnogo Spershu vvazhali sho v afeliyi praktichno vsya atmosfera zamerzaye j vipadaye na poverhnyu na ce vkazuye silna zalezhnist tisku sublimaciyi yiyi skladnikiv vid temperaturi ale utochneni modeli peredbachayut sho pomitna atmosfera maye zberigatisya protyagom usogo roku 9 1 Zaraz Pluton viddalyayetsya vid Soncya ostannye prohodzhennya perigeliyu bulo 5 veresnya 1989 1 i osvitlenist jogo poverhni zagalom zmenshuyetsya Odnak kartinu uskladnyuye velikij nahil osi jogo obertannya 122 5 40 cherez yakij na znachnij chastini poverhni panuyut dovgi polyarni dni ta nochi Nezadovgo do prohodzhennya perigeliyu 16 grudnya 1987 na Plutoni nastalo rivnodennya 17 i jogo pivnichnij pozitivnij polyus vijshov iz polyarnoyi nochi trivalistyu 124 zemni roki Dani sho isnuyut stanom na 2014 rik dozvolili pobuduvati taku model sezonnih zmin atmosferi Plutona Pid chas prohodzhennya afeliyu vostannye 1865 roku suttyeva kilkist zamerzlih gaziv bula i v pivnichnij i v pivdennij pivkuli Priblizno todi zh na Plutoni nastalo rivnodennya i vin povernuvsya do Soncya pivdennoyu pivkuleyu Letki lodi stali postupovo migruvati do pivnichnoyi i blizko 1900 roku pivdenna yih znachnoyu miroyu pozbulasya Pislya nastupnogo rivnodennya 1987 vona vidvernulasya vid Soncya Ale yiyi poverhnya zbidnena letkimi lodami bula vzhe dobre progrita a velika termalna inerciya zabezpechuvana neletkim vodyanim lodom ne davala yij shvidko ostignuti Tomu gazi sho pochali intensivno viparovuvatisya z pivnichnoyi pivkuli ne mozhut takimi zh tempami kondensuvatisya v pivdennij i popovnyuyut atmosferu zbilshuyuchi yiyi tisk U 2035 2050 rokah pivdenna pivkulya ostigne nastilki sho suttyeva kondensaciya gaziv stane mozhlivoyu i pochnetsya yih migraciya tudi z pivnochi de panuye polyarnij den Ce prodovzhuvatimetsya do rivnodennya bilya afeliyu poblizu 2113 roku Povnistyu pivnichna pivkulya letkih lodiv tak i ne pozbudetsya i zavdyaki yih viparovuvannyu atmosfera zberigatimetsya navit poblizu afeliyu Sezonni zmini atmosfernogo tisku v cij modeli syagayut priblizno 4 raziv minimum buv u 1970 1980 rokah a maksimum nastane blizko 2030 Temperatura zh variyuye v mezhah lishe kilkoh gradusiv 9 Rozsiyuvannya RedaguvatiZa ocinkami zasnovanimi na danih zonda New Horizons atmosfera Plutona rozsiyuyetsya v kosmosi zi shvidkistyu 1 1023 molekul azotu ta 5 1025 molekul metanu na sekundu Ce vidpovidaye vtrati sharu azotnogo lodu tovshinoyu kilka santimetriv ta sharu metanovogo lodu tovshinoyu kilkadesyat metriv za chas isnuvannya Sonyachnoyi sistemi 4 Do vimiryuvan New Horizons temperaturu verhnih shariv atmosferi Plutona vvazhali vishoyu a z cogo viplivala duzhe velika shvidkist rozsiyuvannya atmosferi 20 1 Tempi yiyi vtrati ocinyuvali v 1027 1028 molekul 50 500 kg azotu na sekundu Pri takij shvidkosti za chas isnuvannya Sonyachnoyi sistemi viparuvavsya bi shar poverhni tovshinoyu v sotni chi navit tisyachi metriv 41 1 7 prim 5 U takomu razi vidnosna shvidkist vtrati atmosferi u Plutona bula bi bilshoyu nizh u vsih velikih planet i navit u Tritona 1 20 Popovnyuvati zh zapasi azotu jomu nema chim rozrahunki pokazuyut sho padinnya na nogo dribnih til dlya cogo nedostatno 41 nbsp Haron u spravzhnih kolorahVelika chervonuvata plyama na pivnichnomu polyusi Harona plyama Mordora mozhe skladatisya z toliniv sho utvoryuyutsya z metanu yakij pohodit iz atmosferi Plutona Modeli pokazuyut sho na Haron maye potraplyati blizko 2 5 gaziv yaki vtrachaye Pluton 42 Vzayemodiya z sonyachnim vitrom RedaguvatiMolekuli yakim vistachaye shvidkosti dlya podolannya gravitaciyi Plutona vtikayut u kosmos ta ionizuyutsya sonyachnim ultrafioletom Koli sonyachnij viter stikayetsya z pereponoyu z cih ioniv vin spovilnyuyetsya vidhilyayetsya vbik pidhoplyuye ioni ta nese yih iz soboyu stvoryuyuchi za Plutonom dovgij hvist Pozadu Plutona v potoci sonyachnogo vitru zalishayetsya porozhnina dovzhinoyu prinajmni 100 000 km zapovnena vidnosno holodnim ionizovanim azotom Ce bulo viyavleno za dopomogoyu vimiryuvacha parametriv chastinok sonyachnogo vitru SWAP na kosmichnomu zondi New Horizons sho proletiv kriz cyu porozhninu 43 Oblast vzayemodiyi atmosferi Plutona z sonyachnim vitrom z boku Soncya roztashovana na vidstani blizko 6 radiusiv Plutona 7 tis km a z protilezhnogo boku ponad 400 radiusiv Plutona 500 tis km Ci ocinki stosuyutsya zoni de sonyachnij viter spovilnyuyetsya na 20 44 nbsp Blakitna plyama zobrazhennya Plutona v rentgenivskih promenyah otrimane teleskopom Chandra 45 2014 2015 roku za dopomogoyu kosmichnogo teleskopa Chandra viyavleno sho vid Plutona nadhodyat nizkoenergetichni 0 31 0 60 keV rentgenivski promeni Pripuskayut sho voni ye rezultatom vzayemodiyi mizh gazami z atmosferi karlikovoyi planeti i sonyachnim vitrom 46 45 Istoriya doslidzhen RedaguvatiOznaki nayavnosti u Plutona atmosferi she v 1940 h rokah shukav u jogo spektri Dzherard Kojper 47 ale bezuspishno 48 U 1970 h rokah deyaki astronomi pripuskali shilnu atmosferu j navit okeani z neonu vvazhayuchi jogo yedinim poshirenim u Sonyachnij sistemi gazom sho v umovah Plutona ne zamerzaye j ne rozsiyuyetsya v kosmosi Ale cya gipoteza bula zasnovana na silno zavishenij ocinci masi Plutona 49 Zhodnih sposterezhnih danih shodo jogo atmosferi ta skladu todi ne bulo 48 1976 roku z yavilisya pershi silni hocha j nepryami oznaki isnuvannya atmosferi Plutona za danimi infrachervonoyi fotometriyi otrimanimi na 4 metrovomu teleskopi Mejolla en na jogo poverhni buv viyavlenij 50 metanovij lid yakij pri ochikuvanij tam temperaturi povinen pomitno viparovuvatis 1 Vpevnitisya v nayavnosti atmosferi vdalosya za dopomogoyu sposterezhen pokrittiv Plutonom zirok yaksho zirku 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himichnogo skladu bulo virishene 1992 roku zavdyaki doslidzhennyu infrachervonogo spektru Plutona na 3 8 metrovomu Infrachervonomu teleskopi Spoluchenogo Korolivstva en 55 56 Viyavilosya sho jogo poverhnya vkrita zdebilshogo azotnim lodom Oskilki vin she j letkishij za metanovij ce oznachalo perevazhannya azotu i v atmosferi hocha gazopodibnij azot u spektri j ne sposterigavsya Krim togo bulo vidkrito domishku zamerzlogo monooksidu vuglecyu 55 9 12 Togo zh roku na 3 0 metrovomu infrachervonomu teleskopi IRTF u spektri Plutona vpershe nadijno zareyestruvali liniyi gazopodibnogo metanu 10 48 Dlya doslidzhennya atmosferi Plutona vazhlivo znati temperaturu jogo poverhni Najkrashi yiyi ocinki dayut sposterezhennya teplovogo viprominyuvannya Plutona Pershi znachennya rozrahovani 1987 roku za danimi orbitalnoyi observatoriyi IRAS stanovili 55 60 K a dani nastupnih sposterezhen vkazuvali na 30 40 K 1 48 2005 roku na Submilimetrovomu masivi en vdalosya vimiryati teplove viprominyuvannya Plutona 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