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Super-star clusters may be
born small and grow by coalescing
E. Kloeppel, Physical Sciences Editor
a blue image of the spiral galaxy M101 from the Second Palomar Observatory
Sky Survey. The box marks the location of NGC 5461.Lower left: A false
color image of NGC 5461 made from images taken with the Hubble Space
Telescope Wide-Field Planetary Camera 2 using filters F547M, F675W,
and F656N (displayed in blue, green, and red, respectively). Young stars
and clusters will appear predominantly blue, while the ionized interstellar
gas appears red.
Credits: NASA, Y.-H. Chu and R. Chen (University of Illinois), and K.
Johnson (University of Virginia).
A close-up of the core of NGC 5461 taken with the Hubble Space Telescope
Advanced Camera for Surveys using the F435W filter to show the clusters
and surrounding star cloud.
Credits: NASA, K.D. Kuntz (University of Maryland Baltimore County).
(1) The Space Telescope Science Institute is operated by the Association
of Universities for Research in Astronomy Inc., for NASA, under contract
with the Goddard Space Flight Center, Greenbelt, Md. The Hubble Space
Telescope is a project of international cooperation between NASA and
the European Space Agency (ESA).
(2) The Second Palomar Observatory Sky Survey was made by the California
Institute of Technology with funds from the National Science Foundation,
the National Geographic Society, the Sloan Foundation, the Samuel Oschin
Foundation, and the Eastman Kodak Corp.