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 | SALINAS, Ricardo, Lucie JÍLKOVÁ, Giovanni CARRARO, Márcio CATELAN and Pía AMIGO. Structural parameters and blue stragglers in Sagittarius dwarf spheroidal galaxy globular clusters. Monthly Notices of the Royal Astronomical Society. WILEY, 2012, vol. 421, No 2, p. 960-970. ISSN 0035-8711. Available from: https://dx.doi.org/10.1111/j.1365-2966.2011.20354.x. |
| 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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