SDSSJ103913.70+533029.7: A Super Star Cluster in the Outskirts of a Galaxy Merger

Details SDSSJ103913.70+533029.7: A Super Star Cluster in the Outskirts of a Galaxy Merger SDSSJ103913.70+533029.7: A Super Star Cluster in the Outskirts of a Galaxy Merger

2005-10-31

arxiv.org/abs/astro-ph/0511010v1

Astron.J.131:859-865,2006

Astronomy and Astrophysics

Astrophysics

Accepted by AJ: 4 figures (1 color)

Scientific paper

10.1086/499304

We describe the serendipitous discovery in the spectroscopic data of the Sloan Digital Sky Survey of a star-like object, SDSSJ103913.70+533029.7, at a heliocentric radial velocity of +1012 km/s. Its proximity in position and velocity to the spiral galaxy NGC 3310 suggests an association with the galaxy. At this distance, SDSSJ103913.70+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 > 10^6 solar masses and an age close to that of the tidal shells seen around NGC 3310, suggesting that it formed in the event which formed the shells.

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