Integrated Spectra of Milky Way Globular Cluster
Tatiana Coelho de Moura, Marina Trevisan, Beatriz Barbuy, and Silvia, Rossi

TL;DR
This study models the integrated spectra of Milky Way globular clusters by synthesizing spectra with detailed element abundances, enabling improved understanding of their stellar populations and chemical compositions.
Contribution
It introduces a method to reproduce observed spectra of globular clusters considering individual element abundances and tests the impact of multiple stellar populations on spectral features.
Findings
Successfully reproduces spectra of selected clusters in 4500-9000 Å range
Identifies spectral lines suitable for abundance analysis
Demonstrates effects of Na enhancement on spectral features
Abstract
Integrated spectra of Milky Way globular clusters (GCs) are reproduced by computing synthetic spectra taking into account individual element abundances. Five clusters were selected from their location in the Galactic bulge, for which integrated spectra were available in the WiFeS Atlas of Galactic Globular Cluster Spectra project. Our aim is to further study the oldest GC located in the Galactic bulge, with metallicity in the range 1.6[Fe/H]0.7. We also include the halo cluster NGC 6752 for comparison purposes. We reproduce the full spectra in the range 4500-9000 available in these observed spectra, as well as individual lines of Na, Mg, Al, Si, Ca, Ti, Ba, and Eu. We report a list of lines that are suitable for abundance derivation, and by adopting these abundances we are able to fit the damping parameters that define the wings of strong lines of well-known…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
