Informace o publikaci
Structural parameters and blue stragglers in Sagittarius dwarf spheroidal galaxy globular clusters
| Autoři | |
|---|---|
| Rok publikování | 2012 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Monthly Notices of the Royal Astronomical Society |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | 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 |
| Obor | Astronomie a nebeská mechanika, astrofyzika |
| Klíčová slova | blue stragglers; globular clusters; Arp 2; Terzan 8; NGC 5634; Palomar 12 |
| Popis | 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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