The Open Cluster Chemical Abundances and Mapping Survey. VII. APOGEE DR17 [C/N]-Age CalibrationShow full item record
|Title||The Open Cluster Chemical Abundances and Mapping Survey. VII. APOGEE DR17 [C/N]-Age Calibration|
|Author||Spoo T.; Tayar J.; Frinchaboy P.M.; Cunha K.; Myers N.; Donor J.; Majewski S.R.; Bizyaev D.; García-Hernández D.A.; Jönsson H.; Lane R.R.; Pan K.; Longa-Peña P.; Roman-Lopes A.|
|Abstract||Large-scale surveys open the possibility to investigate Galactic evolution both chemically and kinematically; however, reliable stellar ages remain a major challenge. Detailed chemical information provided by high-resolution spectroscopic surveys of the stars in clusters can be used as a means to calibrate recently developed chemical tools for age-dating field stars. Using data from the Open Cluster Abundances and Mapping survey, based on the Sloan Digital Sky Survey/Apache Point Observatory Galactic Evolution Experiment 2 survey, we derive a new empirical relationship between open cluster stellar ages and the carbon-to-nitrogen ([C/N]) abundance ratios for evolved stars, primarily those on the red giant branch. With this calibration, [C/N] can be used as a chemical clock for evolved field stars to investigate the formation and evolution of different parts of our Galaxy. We explore how mixing effects at different stellar evolutionary phases, like the red clump, affect the derived calibration. We have established the [C/N]-age calibration for APOGEE Data Release 17 (DR17) giant star abundances to be log[Age(yr)]DR17=10.14(±0.08)+2.23(±0.19)[C/N], usable for 8.62?log(Age[yr])?9.82, derived from a uniform sample of 49 clusters observed as part of APOGEE DR17 applicable primarily to metal-rich, thin- and thick-disk giant stars. This measured [C/N]-age APOGEE DR17 calibration is also shown to be consistent with asteroseismic ages derived from Kepler photometry. © 2022. The Author(s). Published by the American Astronomical Society.|
|Department||Physics and Astronomy|
|Subject||Open star clusters
This item appears in the following Collection(s)
- Research Publications 
Showing a few items related by title, author, creator and subject.
The Open Cluster Chemical Abundances and Mapping Survey. V. Chemical Abundances of CTIO/Hydra Clusters Using the Cannon Ray A.E.; Frinchaboy P.M.; Donor J.; Chojnowski S.D.; Melendez M. (2022)Open clusters are key chemical and age tracers of Milky Way evolution. While open clusters provide significant constraints on galaxy evolution, their use has been limited due to discrepancies in measuring abundances from ...
Spoo, Taylor (2021)Through the use of large-scale surveys, astronomers are able to investigate Galactic evolution, both kinematically and chemically, however determining reliable stellar ages has been elusive. Surveys that provide high ...
Donor, John R.,III,author. (2017)Despite living inside the Milky Way, we do not know well basic quantities such as its detailed chemical makeup at the level needed to fundamentally tie the Milky Way to studies of evolution in other galaxies. One key ...