English

Pfleiderer2: identification of a new globular cluster in the Galaxy

Astrophysics of Galaxies 2015-05-13 v1

Abstract

We provide evidence that indicate the star cluster Pfleiderer 2, which is projected in a rich field, as a newly identified Galactic globular cluster. Since it is located in a crowded field, core extraction and decontamination tools were applied to reveal the cluster sequences in B, V and I Color-Magnitude Diagrams (CMDs). The main CMD features of Pfleiderer 2 are a tilted Red Giant Branch, and a red Horizontal Branch, indicating a high metallicity around solar. The reddening is E(B-V)=1.01. The globular cluster is located at a distance from the Sun d_{\odot} = 16±\pm2 kpc. The cluster is located at 2.7 kpc above the Galactic plane and at a distance from the Galactic center of RGC_{\rm GC}=9.7 kpc, which is unusual for a metal-rich globular cluster.

Keywords

Cite

@article{arxiv.0907.1225,
  title  = {Pfleiderer2: identification of a new globular cluster in the Galaxy},
  author = {Sergio Ortolani and Charles Bonatto and Eduardo Bica and Beatriz Barbuy},
  journal= {arXiv preprint arXiv:0907.1225},
  year   = {2015}
}

Comments

Accepted by The Astronomical Journal