Spectroscopy of red giants in the large magellanic cloud bar: Abundances, kinematics, and the age-metallicity relation

AA Cole*, E Tolstoy, JS Gallagher, TA Smecker-Hane

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

140 Citations (Scopus)

Abstract

We report metallicities and radial velocities derived from spectra at the near-infrared calcium triplet for 373 red giants in a 200 arcmin(2) area at the optical center of the LMC bar. These are the first spectroscopic abundance measurements of intermediate-age and old field stars in the high surface brightness heart of the LMC. The metallicity distribution is sharply peaked at the median value [Fe/H] = -0.40, with a small tail of stars extending down to [Fe/H]

Original languageEnglish
Pages (from-to)1465-1482
Number of pages18
JournalThe Astronomical Journal
Volume129
Issue number3
Publication statusPublished - Mar-2005

Keywords

  • galaxies : evolution
  • galaxies : stellar content
  • Magellanic Clouds
  • STAR-FORMATION HISTORY
  • SPACE-TELESCOPE OBSERVATIONS
  • GLOBULAR-CLUSTER GIANTS
  • INFRARED CAII TRIPLET
  • CHEMICAL EVOLUTION
  • WAVELENGTH CALIBRATION
  • STELLAR POPULATIONS
  • LUMINOSITY FUNCTION
  • COIMBRA EXPERIMENT
  • EMISSION-LINES

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