Analysis of Red Supergiants in VDBH 222

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Authors
  Asa’d, Randa
  Kovalev, M.
  Davies, B.
  Ivanov, V. D.
  Rejkuba, M.
  Gonneau, A.
  Hernandez, S.
Publication Date
2020-09-09
Journal Title
The Astrophysical Journal
ISSN
0004-637X
Publisher
The American Astronomical Society
Volume
900
Issue
2
Language
en
Type
Article
This Version
VoR
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Citation
Asa’d, R., Kovalev, M., Davies, B., Ivanov, V. D., Rejkuba, M., Gonneau, A., Hernandez, S., et al. (2020). Analysis of Red Supergiants in VDBH 222. The Astrophysical Journal, 900 (2)https://doi.org/10.3847/1538-4357/aba439
Abstract
Abstract: Recent surveys uncovered new young massive clusters (YMCs) that host dozens of red supergiants (RSGs) in the inner Milky Way. These clusters are ideal for studying the most recent and violent star formation events in the inner Galaxy. However, due to the high extinction that affects the Galactic plane, they need to be studied through infrared (IR) spectroscopy. IR spectra of RSGs have proven to be powerful tools for obtaining chemical abundances. We present the first [Fe/H] measurement (−0.07 ± 0.02) for the YMC VdBH 222 through analysis of its RSGs using Very Large Telescope/X-shooter spectra. We find no evidence for multiple stellar populations in this YMC, contrary to what is routinely observed in older massive clusters.
Keywords
310, Galaxies and Cosmology, Star clusters, Red supergiant stars, Chemical abundances
Sponsorship
American University of Sharjah (FRG20-M-S54)
American University of Sharjah (OAP-CAS- 054)
Identifiers
apjaba439, aba439, aas24512
External DOI: https://doi.org/10.3847/1538-4357/aba439
This record's URL: https://www.repository.cam.ac.uk/handle/1810/310052

Rights
Attribution 4.0 International (CC BY 4.0)
Licence URL: https://creativecommons.org/licenses/by/4.0/

Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's licence is described as Attribution 4.0 International (CC BY 4.0)