Explanation: Where do stars form? A typical place is an area of dense nebular gas common to arms in spiral galaxies. Sometimes, however, a burst of star formation can occur with unusual geometry. Nearby galaxy NGC 1317 shows such an unusual ring of star formation surrounding its barred nucleus. In the above image, older stars appear more red and are more evident in the leftmost photograph in visible light. The rightmost photograph taken by the Ultraviolet Imaging Telescope is in ultraviolet and highlights stars which are younger and bluer and shows the starbirth ring. This unusual ring may be evidence of a gravitational encounter with another galaxy, causing a density wave to ripple out from the galaxy's center.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
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NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: starburst - zvezdoobrazovanie - spiral'naya galaktika s peremychkoi - Ul'trafioletovoe izluchenie Publikacii so slovami: starburst - zvezdoobrazovanie - spiral'naya galaktika s peremychkoi - Ul'trafioletovoe izluchenie
Sm. takzhe: IC 348 i Barnard 3 M16: stolpy sozidaniya Vybrosy iz protozvezd v Zmee CG4: globula i galaktika NGC 604: gigantskie zvezdnye yasli NGC 7714: vspyshka zvezdoobrazovaniya posle stolknoveniya galaktik Tumannost' Konus ot teleskopa imeni Habbla Vse publikacii na tu zhe temu >>