Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-08-10
Astronomy and Astrophysics
Astrophysics
5 pages, 2 figures, 1 table
Scientific paper
We report the discovery of two dust pillars using GLIMPSE archival images obtained with the Infrared Array Camera on board the Spitzer Space Telescope. They are located close to the Galactic molecular cloud GRSMC45.453+0.060 and they appear to be aligned with the ionizing region associated with GRSMC45.478+0.131. Our three colour mosaics show that these stellar incubators present different morphologies as seen from planet Earth. One of them shows the unquestionable existence of young stellar objects in its head, whose influence on the original cocoon is evident, while the other presents a well defined bright-rimmed ionizing front. We argue that second-generation star formation has been triggered in these protuberances by the action of massive stars present in the nearby H II regions.
Pellerin Anne
Ubeda Leonardo
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