Journal
ASTROPHYSICAL JOURNAL
Volume 805, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/805/2/182
Keywords
galaxies: abundances; stars: abundances
Categories
Funding
- National Science Foundation [AST-1108906]
- Royal Astronomical Society
- Programme National de Physique Stellaire of the INSU CNRS
- European Union (European Social Fund)
- National Resources under ARISTEIA action of the Operational Programme Education
- Lifelong Learning in Greece
- STFC [ST/L00061X/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1108906] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/L00061X/1] Funding Source: researchfish
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We present a quantitative spectroscopic study of 27 red supergiants (RSGs) in the Sculptor Galaxy NGC 300. J-band spectra were obtained using KMOS on the Very Large Telescope and studied with state of the art synthetic spectra including NLTE corrections for the strongest diagnostic lines. We report a central metallicity of [Z] = -0.03 +/- 0.05 with a gradient of -0.083 +/- 0.014 [dex/kpc], in agreement with previous studies of blue supergiants and H II-region auroral line measurements. This result marks the first application of the J-band spectroscopic method to a population of individual RSG stars beyond the Local Group of galaxies and reveals the great potential of this technique.
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