Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21915101r&link_type=abstract
American Astronomical Society, AAS Meeting #219, #151.01
Astronomy and Astrophysics
Astronomy
Scientific paper
We present FUV and optical photometry of star clusters and surrounding diffuse light in the outer regions of NGC 1275, the brightest galaxy in the Perseus Cluster. Observations were taken with the HST/ACS Wide Field Channel and Solar Blind Channel. These spectacular star forming regions extending over tens of kpc resemble those of the giant emission line filaments which are most likely drawn out by rising radio bubbles. Why these star clusters are forming at large projected distances from the main optical body of the galaxy remains a mystery. Ages and masses of the compact star clusters and associated diffuse regions have been found using single stellar population (SSP) modeling of our optical and FUV photometry. Several relevant timescales are compared in an attempt to understand the physical mechanisms that led to this unusual mode of star formation.
This research is based on observations obtained with the NASA/ESA Hubble Space Telescope through program GO-11207 that also supplied partial grant support.
Canning E. A. R.
Fabian Andrea C.
Gallagher Jay S.
Johnstone R. M.
O'Connell Robert West
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