Publication: SDSS J103913.70+533029.7: A Super Star Cluster in the Outskirts of a Galaxy Merger
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Date
2006
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IOP Publishing
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Knapp, Gillian R., Christy A. Tremonti, Constance M. Rockosi, David J. Schlegel, Brian Yanny, Timothy C. Beers, Carlos Allende Prieto, et al. 2006. “SDSS J103913.70+533029.7: A Super Star Cluster in the Outskirts of a Galaxy Merger.” The Astronomical Journal 131 (2) (February): 859–865. doi:10.1086/499304.
Abstract
We describe the serendipitous discovery in the spectroscopic data of the Sloan Digital Sky Survey of a starlike object, SDSS J103913.70+533029.7, at a heliocentric radial velocity of +1012 km s-1. Its proximity in position and velocity to the spiral galaxy NGC 3310 suggests an association with the galaxy. At this distance, SDSS J103913.70+533029.7 has the luminosity of a super star cluster and a projected distance of 17 kpc from NGC 3310. Its spectroscopic and photometric properties imply a mass of >106 M⊙ and an age close to that of the tidal shells seen around NGC 3310, suggesting that it formed in the event that formed the shells.
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galaxies: formation, galaxies: individual (NGC 3310), galaxies: starburst, galaxies: star clusters
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