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Cited by 414

The DOI matches its Crossref record; 74 of the 74 references it cites were found in a registry or an index.

RECONCILING THE STELLAR AND NEBULAR SPECTRA OF HIGH-REDSHIFT GALAXIES*

Open access
Steidel, Charles C., Strom, Allison L., Pettini, Max, Rudie, Gwen C., Reddy, Naveen A., Trainor, Ryan F.·2016·The Astrophysical Journal

Abstract

We present a combined analysis of rest-frame far-UV (FUV; 1000–2000 Å) and rest-frame optical (3600–7000 Å) composite spectra formed from very deep Keck/LRIS and Keck/MOSFIRE observations of a sample of 30 star-forming galaxies with , selected to be broadly representative of the full KBSS-MOSFIRE spectroscopic survey. Since the same massive stars are responsible for the observed FUV continuum and for the excitation of the observed nebular emission, a self-consistent stellar population synthesis model should simultaneously match the details of the FUV stellar+nebular continuum and—when inserted as the excitation source in photoionization models—predict all observed nebular emission line ratios. We find that only models including massive star binaries, having low stellar metallicity ( ) but relatively high nebular (ionized gas-phase) abundances ( ), can successfully match all of the observational constraints. We show that this apparent discrepancy is naturally explained by highly super-solar O/Fe ( ), expected for a gas whose enrichment is dominated by the products of core-collapse supernovae. While O dominates the physics of the ionized gas (and thus the nebular emission lines), Fe dominates the extreme-UV (EUV) and FUV opacity and controls the mass-loss rate from massive stars, resulting in particularly dramatic effects for massive stars in binary systems. This high nebular excitation—caused by the hard EUV spectra of Fe-poor massive stars—is much more common at high redshift than low redshift due to systematic differences in the star formation history of typical galaxies.

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Metadata

Authors
Steidel, C. C., Strom, A. L., Pettini, M., Rudie, G. C., Reddy, N. A., & Trainor, R. F.
Venue
The Astrophysical Journal
Published
2016-07-28
Volume
826
Issue
2
Pages
159
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
OpenAlex
W2400739368
Cited by
414
References
74
FWCI
19.69
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: RECONCILING THE STELLAR AND NEBULAR SPECTRA OF HIGH-REDSHIFT GALAXIES*. https://app.cochat.ai/papers/10.3847/0004-637x/826/2/159
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Steidel, C. C., Strom, A. L., Pettini, M., Rudie, G. C., Reddy, N. A., & Trainor, R. F. (2016). RECONCILING THE STELLAR AND NEBULAR SPECTRA OF HIGH-REDSHIFT GALAXIES*. The Astrophysical Journal. https://doi.org/10.3847/0004-637x/826/2/159

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