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MIDIS : Strong (H beta plus [OIII]) and Ha Emitters at Redshift z similar or equal to 7-8 Unveiled with JWST NIRCam and MIRI Imaging in the Hubble eXtreme Deep Field
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Rinaldi, P. (author)
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Caputi, K. I. (author)
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Costantin, L. (author)
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show more...
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Gillman, S. (author)
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Iani, E. (author)
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Perez-Gonzalez, P. G. (author)
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- Östlin, Göran, 1968- (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Colina, L. (author)
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Greve, T. R. (author)
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Noorgard-Nielsen, H. U. (author)
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Wright, G. S. (author)
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Alonso-Herrero, A. (author)
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Alvarez-Marquez, J. (author)
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Eckart, A. (author)
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Garcia-Marin, M. (author)
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Hjorth, J. (author)
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Ilbert, O. (author)
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Kendrew, S. (author)
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Labiano, A. (author)
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Le Fevre, O. (author)
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Pye, J. (author)
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Tikkanen, T. (author)
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Walter, F. (author)
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van der Werf, P. (author)
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Ward, M. (author)
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Annunziatella, M. (author)
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Azzollini, R. (author)
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- Bik, Arjan (author)
- Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Boogaard, L. (author)
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Bosman, S. E. I. (author)
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Gomez, A. Crespo (author)
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Jermann, I. (author)
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Langeroodi, D. (author)
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- Melinder, Jens, 1977- (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Meyer, R. A. (author)
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Moutard, T. (author)
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Peissker, F. (author)
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Topinka, M. (author)
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van Dishoeck, E. (author)
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Gudel, M. (author)
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Henning, Th. (author)
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Lagage, P. -O. (author)
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Ray, T. (author)
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Vandenbussche, B. (author)
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Waelkens, C. (author)
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Navarro-Carrera, R. (author)
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Kokorev, V. (author)
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 952:2
- Related links:
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https://doi.org/10.3...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Subject headings
Close
- We make use of JWST medium-band and broadband NIRCam imaging, along with ultradeep MIRI 5.6 mu m imaging, in the Hubble eXtreme Deep Field to identify prominent line emitters at z similar or equal to 7-8. Out of a total of 58 galaxies at z similar or equal to 7-8, we find 18 robust candidates ( similar or equal to 31%) for (H beta + [O III]) emitters, based on their enhanced fluxes in the F430M and F444W filters, with EW0(H beta +[O III]) similar or equal to 87-2100 angstrom. Among these emitters, 16 lie in the MIRI coverage area and 12 exhibit a clear flux excess at 5.6 mu m, indicating the simultaneous presence of a prominent Ha emission line with EW0(H alpha) similar or equal to 200-3000 angstrom. This is the first time that H alpha emission can be detected in individual galaxies at z > 7. The Ha line, when present, allows us to separate the contributions of H beta and [O III] to the (H beta +[O III]) complex and derive Ha-based star formation rates (SFRs). We find that in most cases [O III]/ H beta > 1. Instead, two galaxies have [O III]/H beta < 1, indicating that the NIRCam flux excess is mainly driven by H beta. Most prominent line emitters are very young starbursts or galaxies on their way to/from the starburst cloud. They make for a cosmic SFR density log(10)( rho(SFRH alpha) (M-circle dot yr(-1) Mpc))similar or equal to - 2.351 3 which is about a quarter of the total value (log(10)( SFR (M-circle dot yr(-1) Mpc))similar or equal to - 1.761 3 ) at z similar or equal to 7-8. Therefore, the strong Ha emitters likely had a significant role in reionization.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
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Rinaldi, P.
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Caputi, K. I.
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Costantin, L.
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Gillman, S.
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Iani, E.
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Perez-Gonzalez, ...
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show more...
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Östlin, Göran, 1 ...
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Colina, L.
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Greve, T. R.
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Noorgard-Nielsen ...
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Wright, G. S.
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Alonso-Herrero, ...
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Alvarez-Marquez, ...
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Eckart, A.
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Garcia-Marin, M.
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Hjorth, J.
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Ilbert, O.
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Kendrew, S.
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Labiano, A.
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Le Fevre, O.
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Pye, J.
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Tikkanen, T.
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Walter, F.
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van der Werf, P.
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Ward, M.
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Annunziatella, M ...
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Azzollini, R.
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Bik, Arjan
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Boogaard, L.
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Bosman, S. E. I.
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Gomez, A. Crespo
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Jermann, I.
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Langeroodi, D.
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Melinder, Jens, ...
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Meyer, R. A.
-
Moutard, T.
-
Peissker, F.
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Topinka, M.
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van Dishoeck, E.
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Gudel, M.
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Henning, Th.
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Lagage, P. -O.
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Ray, T.
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Vandenbussche, B ...
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Waelkens, C.
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Navarro-Carrera, ...
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Kokorev, V.
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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astrophysical Jo ...
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Stockholm University