Publication details
Structural parameters and blue stragglers in Sagittarius dwarf spheroidal galaxy globular clusters
| Authors | |
|---|---|
| Year of publication | 2012 |
| Type | Article in Periodical |
| Magazine / Source | Monthly Notices of the Royal Astronomical Society |
| MU Faculty or unit | |
| Citation | |
| Web | http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2966.2011.20354.x/full |
| Doi | http://dx.doi.org/10.1111/j.1365-2966.2011.20354.x |
| Field | Astronomy and astrophysics |
| Keywords | blue stragglers; globular clusters; Arp 2; Terzan 8; NGC 5634; Palomar 12 |
| Description | We present BV photometry of four Sagittarius dwarf spheroidal galaxy globular clusters: Arp 2, NGC 5634, Palomar 12 and Terzan 8, obtained with the Danish Telescope at ESO La Silla. We measure the structural parameters of the clusters using a King profile fitting, obtaining the first reliable measurements of the tidal radius of Arp 2 and Terzan 8. These two clusters are remarkably extended and with low concentrations, with a concentration of only c=0.41+/-0.02, Terzan 8 is less concentrated than any cluster in our Galaxy. |
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