SIMBAD references

2015ApJ...805..182G - Astrophys. J., 805, 182 (2015/June-1)

Red supergiants as cosmic abundance probes: the Sculptor galaxy NGC 300.

GAZAK J.Z., KUDRITZKI R., EVANS C., PATRICK L., DAVIES B., BERGEMANN M., PLEZ B., BRESOLIN F., BENDER R., WEGNER M., BONANOS A.Z. and WILLIAMS S.J.

Abstract (from CDS):

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.

Abstract Copyright:

Journal keyword(s): galaxies: abundances - stars: abundances

Nomenclature: Tables 2,4: [GKE2015] NNN N=27 among (Nos 6-140).

Status in Simbad:  being processed

Simbad objects: 22

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2019.10.17-16:15:46

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