2017A&A...605A.128K


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.29CET21:17:02

2017A&A...605A.128K - Astronomy and Astrophysics, volume 605A, 128-128 (2017/9-1)

Spectroscopic confirmation of the low-latitude object FSR 1716 as an old globular cluster.

KOCH A., KUNDER A. and WOJNO J.

Abstract (from CDS):

Star clusters are invaluable tracers of the Galactic components and the discovery and characterization of low-mass stellar systems can be used to appraise their prevailing disruption mechanisms and time scales. However, owing to significant foreground contamination, high extinction, and still uncharted interfaces of the underlying Milky Way components, objects at low Galactic latitudes are notoriously difficult to characterize. Here, we present the first spectroscopic campaign to identify the chemodynamical properties of the low-latitude star cluster FSR 1716. While its photometric age and distance are far from settled, the presence of RR Lyrae variables indicates a rather old cluster variety. Using medium-resolution (R∼10600) calcium triplet (CaT) spectroscopy obtained with the wide-field, multi-fiber AAOmega instrument, we identified six member candidates with a mean velocity of -30km/s and a velocity dispersion of 2.5±0.9km/s. The latter value implies a dynamic mass of ∼1.3x104M, typical of a low-mass globular cluster. Combined with our derived CaT metallicity of -1.38±0.20dex, this object is finally confirmed as an old, metal-poor globular cluster.

Abstract Copyright: © ESO, 2017

Journal keyword(s): stars: abundances - Galaxy: abundances - Galaxy: structure - Galaxy: disk - open clusters and associations: general - globular clusters: individual: FSR 1716 - globular clusters: individual: FSR 1716

Simbad objects: 9

goto Full paper

goto View the reference in ADS

Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME Gal Anticenter reg 05 46 +28.9           ~ 738 0
2 2MASS J16102577-5344462 IR 16 10 25.776 -53 44 46.28           ~ 1 0
3 2MASS J16102645-5344231 IR 16 10 26.456 -53 44 23.18           ~ 1 0
4 2MASS J16102676-5344077 IR 16 10 26.766 -53 44 07.73           ~ 1 0
5 2MASS J16102988-5346053 * 16 10 29.8850175437 -53 46 05.384897211           ~ 2 0
6 2MASS J16103035-5344508 IR 16 10 30.353 -53 44 50.81           ~ 1 0
7 2MASS J16103222-5345503 * 16 10 32.2264195977 -53 45 50.404281447           ~ 2 0
8 [FSR2007] 1716 OpC 16 10 33.0 -53 44 12           ~ 27 0
9 NAME Galactic Bulge reg ~ ~           ~ 3489 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2017A&A...605A.128K and select 'bookmark this link' or equivalent in the popup menu


2020.11.29-21:17:02

© Université de Strasbourg/CNRS

    • Contact