The orbital motion of the Arches cluster: clues on cluster formation near the Galactic CenterReport as inadecuate




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Astrophysics and Space Science

, Volume 324, Issue 2–4, pp 137–140

First Online: 03 November 2009Received: 01 February 2008Accepted: 22 March 2008

Abstract

We have measured the proper motion of the Arches cluster near the Galactic Center GC with respect to the ambient field, using Keck-NIRC2 LGS-AO and VLT-NAOS-CONICA NGS-AO observations spanning a baseline of 4.3 yr. Combined with the radial velocity, we derive a 3D space motion of 232±30 km s for the Arches cluster. This motion is exceptionally large compared to molecular cloud orbits at the GC, and places stringent constraints on the formation scenarios for starburst clusters in dense, nuclear environments.

Open clusters: individual: Arches Galactic Center Techniques: adaptive optics  Download to read the full article text



Author: Andrea Stolte - Andrea Ghez - Mark Morris - Jessica Lu - Wolfgang Brandner - Keith Matthews

Source: https://link.springer.com/



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