Skip navigation
  • INAF logo
  • Home
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects
  • Explore by
    • Research outputs
    • Researchers
    • Organization units
    • Projects
  • Login:
    • My DSpace
    • Receive email
      updates
    • Edit Account details
  • Italian
  • English

  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 3 CONTRIBUTI IN ATTI DI CONVEGNO (Proceedings)
  4. 3.01 Contributi in Atti di convegno
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/27947
Title: The GOTHAM survey: chemical evolution of Milky Way globular clusters
Authors: Dias, Bruno
Barbuy, Beatriz
Saviane, Ivo
HELD, Enrico Valerio 
da Costa, Gary
Ortolani, Sergio
GULLIEUSZIK, MARCO 
Issue Date: 2018
Volume: Rediscovering Our Galaxy
Editors: Chiappini, C.; Minchev, I.; Starkenburg, E.; Valentini, M.
Series: PROCEEDINGS OF THE INTERNATIONAL ASTRONOMICAL UNION 
Number: vol. 13, S334
First Page: 25
Abstract: Milky Way globular clusters are excellent laboratories for stellar population detailed analysis that can be applied to extragalactic environments with the advent of the 40m-class telescopes like the ELT. The globular cluster population traces the early evolution of the Milky Way which is the field of Galactic archaeology. We present our GlObular clusTer Homogeneous Abundance Measurement (GOTHAM) survey. We derived radial velocities, Teff, log(g), [Fe/H], [Mg/Fe] for red giant stars in one third of all Galactic globular clusters that represent well the Milky Way globular cluster system in terms of metallicity, mass, reddening, and distance. Our method is based on low-resolution spectroscopy and is intrinsically reddening free and efficient even for faint stars. Our [Fe/H] determinations agree with high-resolution results to within 0.08 dex. The GOTHAM survey provides a new metallicity scale for Galactic globular clusters with a significant update of metallicities higher than [Fe/H] > -0.7. We show that the trend of [Mg/Fe] with metallicity is not constant as previously found, because now we have more metal-rich clusters. Moreover, peculiar clusters whose [Mg/Fe] does not match Galactic stars for a given metallicity are discussed. We also measured the CaII triplet index for all stars and we show that the different chemical evolution of Milky Way open clusters, field stars, and globular clusters implies different calibrations of calcium triplet to metallicity.
Conference Name: Rediscovering our Galaxy
Conference Place: Potsdam, Germany
Conference Date: 10-14 July, 2017
URI: http://hdl.handle.net/20.500.12386/27947
URL: https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/gotham-survey-chemical-evolution-of-milky-way-globular-clusters/B84D7FAC7469EF30230F6A3F980079CB#
ISSN: 1743-9213
ISBN: 978-1-107-19234-8
DOI: 10.1017/S1743921317007086
Bibcode ADS: 2018IAUS..334...25D
Fulltext: open
Appears in Collections:3.01 Contributi in Atti di convegno

Files in This Item:
File Description SizeFormat 
gotham_survey_chemical_evolution_of_milky_way_globular_clusters.pdfPDF editoriale405.42 kBAdobe PDFView/Open
Show full item record

Page view(s)

6
checked on Jan 19, 2021

Download(s)

2
checked on Jan 19, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are published in Open Access, unless otherwise indicated.


Explore by
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects

Informazioni e guide per autori

https://openaccess-info.inaf.it: tutte le informazioni sull'accesso aperto in INAF

Come si inserisce un prodotto: le guide a OA@INAF

La Policy INAF sull'accesso aperto

Documenti e modelli scaricabili

Feedback
Built with DSpace-CRIS - Extension maintained and optimized by Logo 4SCIENCE