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Spatially Resolved ...
Spatially Resolved C iii] λ1909 Emission in Haro 11
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Micheva, Genoveva (author)
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- Östlin, Göran (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Melinder, Jens (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Hayes, Matthew (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Oey, M. S. (author)
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Inoue, Akio K. (author)
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Iwata, Ikuru (author)
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- Adamo, Angela (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Wisotzki, Lutz (author)
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Nakajima, Kimihiko (author)
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(creator_code:org_t)
- 2020-11-10
- 2020
- English.
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In: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 903:2
- Related links:
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https://iopscience.i...
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https://doi.org/10.3...
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Abstract
Subject headings
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- The C iii] 1909 (hereafter C iii]) line is the strongest ultraviolet emission line after Ly alpha and is therefore of interest to high-redshift studies of star-forming (SF) galaxies near the epoch of reionization. It is thought that C iii] emission is strongest in galaxies with subsolar metallicity and low mass; however, spectral observations of numerous such galaxies at high and low redshift produce inconclusive or even contradictory results. We present the first-ever C iii] imaging, obtained with HST/STIS for the low-redshift SF galaxy Haro 11. Cluster parameters like stellar mass, dust fraction and attenuation, and ionization parameter, obtained through spectral energy distribution fitting, show no correlation with the C iii] equivalent width (EW), which may be due to a combination of the limitation of the models and the age homogeneity of the cluster population. Comparing the ratio of C iii] emission line flux from individual clusters to that of H alpha, [O iii], and [O ii], we find that the clusters with the highest EW(C iii]) can be reconciled only with Cloudy models with an extremely high C/O ratio of >= 1.4(C/O) for an ionizing population of single stars, binary stars, or a mixture of binary stars and active galactic nuclei. Given the pointlike nature of strong C iii], the integrated total strength of EW(C iii]) becomes dependent on the morphology of the galaxy, which would explain the large scatter in EW(C iii]) strengths observed in galaxies with otherwise similar SF properties and of similarly low metallicity and stellar mass.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Starburst galaxies
- Interstellar medium
- Photoionization
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Micheva, Genovev ...
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Östlin, Göran
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Melinder, Jens
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Hayes, Matthew
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Oey, M. S.
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Inoue, Akio K.
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show more...
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Iwata, Ikuru
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Adamo, Angela
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Wisotzki, Lutz
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Nakajima, Kimihi ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Astrophysical Jo ...
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Stockholm University