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Gazak, JZ, Kudritzki, R, Evans, C, Patrick, L, Davies, B, Bergemann, M, Plez, B, Bresolin, F, Bender, R, Wegner, M, Bonanos, AZ and Williams, SJ (2015) RED SUPERGIANTS AS COSMIC ABUNDANCE PROBES: THE SCULPTOR GALAXY NGC 300. ASTROPHYSICAL JOURNAL, 805 (2). ISSN 0004-637X
Full text not available from this repository. Please see publisher or open access link below:Abstract
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 0201 Astronomical And Space Sciences, 0305 Organic Chemistry, 0306 Physical Chemistry (Incl. Structural) |
| Subjects: | Q Science > QB Astronomy |
| Divisions: | Astrophysics Research Institute |
| Publisher: | IOP PUBLISHING LTD |
| Related URLs: | |
| Date Deposited: | 10 Apr 2017 12:27 |
| Last Modified: | 03 Sep 2021 23:31 |
| DOI or ID number: | 10.1088/0004-637X/805/2/182 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/6233 |
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