megamaser
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Megamaser — A megamaser is a type of astrophysical maser, which is a naturally occurring source of stimulated spectral line emission. Megamasers are distinguished from astrophysical masers by their large isotropic luminosity. Megamasers produce roughly 103… … Wikipedia
Astrophysical maser — An astrophysical maser is a naturally occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic spectrum. This emission may arise in molecular clouds, comets, planetary atmospheres, stellar… … Wikipedia
NGC 262 — Галактика История исследования Открыватель Льюис Свифт Дата открытия 17 сентября 1885 Обозначения NGC 262, UGC 499, Z 501.20 … Википедия
Arp 220 — Infobox Galaxy name = Arp 220 epoch = J2000 type = S?cite web title=NASA/IPAC Extragalactic Database work=Results for Arp 220 url=http://nedwww.ipac.caltech.edu/ accessdate=2006 12 07] ra = RA|15|34|57.1 dec = DEC|+23|30|11 dist ly = 250 Mly (77… … Wikipedia
Маркарян 348 — NGC 262 Галактика История исследования Дата открытия 17 сентября 1885 Обозначения NGC 262, UGC 499, Z 501.20, Mrk 348, PGC 2855 Наблюдательные данные (Эпоха Тип Sa/Sb … Википедия
kilomaser — noun An extragalactic water maser that is weaker than a megamaser … Wiktionary
