Avtory i prava: NASA,
KalTeh — Laboratoriya reaktivnogo
dvizheniya,
Loren Pagani (Parizhskaya observatoriya/Nacional'nyi centr nauchnyh issledovanii), Yurgen Steinaker (Parizhskaya observatoriya/Astrofizicheskii institut Maksa Planka)
i dr.
Loren Pagani (Parizhskaya observatoriya/Nacional'nyi centr nauchnyh issledovanii), Yurgen Steinaker (Parizhskaya observatoriya/Astrofizicheskii institut Maksa Planka)
i dr.
Perevod: Vol'nova A.A.
Poyasnenie:
Zvezdy
i planety rozhdayutsya vnutri
temnyh holodnyh oblakov mezhzvezdnogo gaza i pyli.
Astronomy issledovali
takie oblaka s pomosh'yu
infrakrasnyh teleskopov i obnaruzhili nechto interesnoe: u mnogih plotnyh oblakov central'nye
chasti svetyatsya, otrazhaya
infrakrasnyi svet zvezd.
Segodnyashnyaya kartinka sozdana na osnove arhivnyh dannyh
kosmicheskogo teleskopa Spitcer. Ona
illyustriruet nedavno otkrytoe
yavlenie pod nazvaniem
iznachal'nyi
svet (Prim. perev.: ot angl. —
coreshine).
s pravoi storony pokazan snimok v bolee dlinnovolnovoi chasti infrakrasnogo izlucheniya.
V etih luchah yadro oblaka
Linds
183 vyglyadit temnym. Odnako stoit slegka umen'shit' dlinu volny (sleva), i my uvidim,
chto yadro oblaka svetitsya,
rasseivaya
izluchenie
blizhaishih zvezd.
Pokazannoe na etih kartinkah udlinennoe yadro zanimaet v prostranstve okolo 1.5 svetovyh
let.
Chtoby nablyudalos' podobnoe rasseyanie, neobhodimo, chtoby chasticy pyli byli v 10 raz
bol'she po razmeru, chem
predpolagalos' ranee: okolo 1 mikrona vmesto 0.1 mikrona.
Dlya sravneniya, tolshina chelovecheskogo volosa sostavlyaet okolo 100 mikron.
Tot fakt, chto iz yavleniya iznachal'nogo sveta sleduet bol'shii razmer chastic pyli v
oblake, mozhet sil'no povliyat'
na modeli rannih faz formirovaniya zvezd i planet. Ved' etot process do sih por ostaetsya
zagadochnym, skryvayas' ot uchenyh
vnutri
mezhzvezdnyh oblakov.
Temnaya tumannost' Linds 183 nahoditsya na rasstoyanii primerno 325 svetovyh let ot
nas v napravlenii na sozvezdie Zmei.
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NASA Official: Jay Norris. Specific rights apply.
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& Michigan Tech. U.
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Publikacii s klyuchevymi slovami:
infrared - Spitzer space telescope - star formation - molecular cloud - infrakrasnye nablyudeniya - zvezdoobrazovanie - Molekulyarnye oblaka
Publikacii so slovami: infrared - Spitzer space telescope - star formation - molecular cloud - infrakrasnye nablyudeniya - zvezdoobrazovanie - Molekulyarnye oblaka | |
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