Bibcode
Schiappacasse-Ulloa, J.; Tang, B.; Fernández-Trincado, J. G.; Zamora, O.; Geisler, D.; Frinchaboy, P.; Schultheis, M.; Dell'Agli, F.; Villanova, S.; Masseron, T.; Mészáros, Sz.; Souto, D.; Hasselquist, S.; Cunha, K.; Smith, V. V.; García-Hernández, D. A.; Vieira, K.; Robin, A. C.; Minniti, D.; Zasowski, G.; Moreno, E.; Pérez-Villegas, A.; Lane, R. R.; Ivans, I. I.; Pan, K.; Nitschelm, C.; Santana, F. A.; Carrera, R.; Roman-Lopes, A.
Bibliographical reference
The Astronomical Journal, Volume 156, Issue 3, article id. 94, 14 pp. (2018).
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9
2018
Citations
8
Refereed citations
8
Description
IC 166 is an intermediate-age open cluster (OC) (˜1 Gyr) that lies
in the transition zone of the metallicity gradient in the outer disk.
Its location, combined with our very limited knowledge of its salient
features, make it an interesting object of study. We present the first
high-resolution spectroscopic and precise kinematical analysis of IC
166, which lies in the outer disk with R GC ˜ 12.7 kpc.
High-resolution H-band spectra were analyzed using observations from the
SDSS-IV Apache Point Observatory Galactic Evolution Experiment survey.
We made use of the Brussels Automatic Stellar Parameter code to provide
chemical abundances based on a line-by-line approach for up to eight
chemical elements (Mg, Si, Ca, Ti, Al, K, Mn, and Fe). The
α-element (Mg, Si, Ca, and whenever available Ti) abundances, and
their trends with Fe abundances have been analyzed for a total of 13
high-likelihood cluster members. No significant abundance scatter was
found in any of the chemical species studied. Combining the positional,
heliocentric distance, and kinematic information, we derive, for the
first time, the probable orbit of IC 166 within a Galactic model
including a rotating boxy bar, and found that it is likely that IC 166
formed in the Galactic disk, supporting its nature as an unremarkable
Galactic OC with an orbit bound to the Galactic plane.
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