On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction
- Autores
- Bassett, R.; Ryan-Weber, E.V.; Cooke, J.; Diaz, Carlos Gonzalo; Nanayakkara, T.; Yuan, T. T.; Spitler, L.R.; Mestric, U.; Garel, T.; Sawicki, Silvana Mabel; Gwyn, S.; Golob, A.
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present the first results of our pilot study of eight photometrically selected Lyman-continuum (LyC) emitting galaxy candidates from the COSMOS field and focus on their optical emission line ratios. Observations were performed in the H and K bands using the Multi-Object Spectrometer for Infra-Red Exploration (MOSFIRE) instrument at the Keck Observatory, targeting the [O ii], H β, and [Oiii] emission lines. We find that photometrically selected LyC emitting galaxy candidates have high ionization parameters, based on their high [O iii]/[O ii] ratios (O32), with an average ratio for our sample of 2.5 ± 0.2. Preliminary results of our companion Low-Resolution Imaging Spectrometer (LRIS) observations, targeting LyC and Ly α, show that those galaxies with the largest O32 are typically found to also be Ly α emitters. High O32 galaxies are also found to have tentative non-zero LyC escape fractions (f esc (LyC)) based on u band photometric detections. These results are consistent with samples of highly ionized galaxies, including confirmed LyC emitting galaxies from the literature. We also perform a detailed comparison between the observed emission line ratios and simulated line ratios from density bounded H ii regions modelled using the photoionization code MAPPINGS V. Estimates of f esc (LyC) for our sample fall in the range from 0.0 to 0.23 and suggest possible tension with published correlations between O32 and f esc (LyC), adding weight to dichotomy of arguments in the literature. We highlight the possible effects of clumpy geometry and mergers that may account for such tension.
Fil: Bassett, R.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; Australia
Fil: Ryan-Weber, E.V.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; Australia
Fil: Cooke, J.. Swinburne University of Technology; Australia
Fil: Diaz, Carlos Gonzalo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina. Gemini Observatory; Chile
Fil: Nanayakkara, T.. Leiden University; Países Bajos
Fil: Yuan, T. T.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; Australia
Fil: Spitler, L.R.. Australian Astronomical Observatories; Australia. Macquarie University; Australia. Macquarie University; Australia
Fil: Mestric, U.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; Australia
Fil: Garel, T.. Centre de Recherche Astrophysique de Lyon; Francia
Fil: Sawicki, Silvana Mabel. Saint Mary's University; Canadá
Fil: Gwyn, S.. National Research Council Canada; Canadá
Fil: Golob, A.. Saint Mary's University; Canadá - Materia
-
COSMOLOGY: DARK AGES, REIONIZATION, FIRST STARS
GALAXIES: INTERGALACTIC MEDIUM
GALAXIES: ISM - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/124436
Ver los metadatos del registro completo
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On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fractionBassett, R.Ryan-Weber, E.V.Cooke, J.Diaz, Carlos GonzaloNanayakkara, T.Yuan, T. T.Spitler, L.R.Mestric, U.Garel, T.Sawicki, Silvana MabelGwyn, S.Golob, A.COSMOLOGY: DARK AGES, REIONIZATION, FIRST STARSGALAXIES: INTERGALACTIC MEDIUMGALAXIES: ISMhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present the first results of our pilot study of eight photometrically selected Lyman-continuum (LyC) emitting galaxy candidates from the COSMOS field and focus on their optical emission line ratios. Observations were performed in the H and K bands using the Multi-Object Spectrometer for Infra-Red Exploration (MOSFIRE) instrument at the Keck Observatory, targeting the [O ii], H β, and [Oiii] emission lines. We find that photometrically selected LyC emitting galaxy candidates have high ionization parameters, based on their high [O iii]/[O ii] ratios (O32), with an average ratio for our sample of 2.5 ± 0.2. Preliminary results of our companion Low-Resolution Imaging Spectrometer (LRIS) observations, targeting LyC and Ly α, show that those galaxies with the largest O32 are typically found to also be Ly α emitters. High O32 galaxies are also found to have tentative non-zero LyC escape fractions (f esc (LyC)) based on u band photometric detections. These results are consistent with samples of highly ionized galaxies, including confirmed LyC emitting galaxies from the literature. We also perform a detailed comparison between the observed emission line ratios and simulated line ratios from density bounded H ii regions modelled using the photoionization code MAPPINGS V. Estimates of f esc (LyC) for our sample fall in the range from 0.0 to 0.23 and suggest possible tension with published correlations between O32 and f esc (LyC), adding weight to dichotomy of arguments in the literature. We highlight the possible effects of clumpy geometry and mergers that may account for such tension.Fil: Bassett, R.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; AustraliaFil: Ryan-Weber, E.V.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; AustraliaFil: Cooke, J.. Swinburne University of Technology; AustraliaFil: Diaz, Carlos Gonzalo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina. Gemini Observatory; ChileFil: Nanayakkara, T.. Leiden University; Países BajosFil: Yuan, T. T.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; AustraliaFil: Spitler, L.R.. Australian Astronomical Observatories; Australia. Macquarie University; Australia. Macquarie University; AustraliaFil: Mestric, U.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; AustraliaFil: Garel, T.. Centre de Recherche Astrophysique de Lyon; FranciaFil: Sawicki, Silvana Mabel. Saint Mary's University; CanadáFil: Gwyn, S.. National Research Council Canada; CanadáFil: Golob, A.. Saint Mary's University; CanadáWiley Blackwell Publishing, Inc2019-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/124436Bassett, R.; Ryan-Weber, E.V.; Cooke, J.; Diaz, Carlos Gonzalo; Nanayakkara, T.; et al.; On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 483; 4; 3-2019; 5223-52450035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty3320info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/483/4/5223/5237720info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1812.04129info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:17:13Zoai:ri.conicet.gov.ar:11336/124436instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:17:14.058CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction |
| title |
On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction |
| spellingShingle |
On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction Bassett, R. COSMOLOGY: DARK AGES, REIONIZATION, FIRST STARS GALAXIES: INTERGALACTIC MEDIUM GALAXIES: ISM |
| title_short |
On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction |
| title_full |
On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction |
| title_fullStr |
On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction |
| title_full_unstemmed |
On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction |
| title_sort |
On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction |
| dc.creator.none.fl_str_mv |
Bassett, R. Ryan-Weber, E.V. Cooke, J. Diaz, Carlos Gonzalo Nanayakkara, T. Yuan, T. T. Spitler, L.R. Mestric, U. Garel, T. Sawicki, Silvana Mabel Gwyn, S. Golob, A. |
| author |
Bassett, R. |
| author_facet |
Bassett, R. Ryan-Weber, E.V. Cooke, J. Diaz, Carlos Gonzalo Nanayakkara, T. Yuan, T. T. Spitler, L.R. Mestric, U. Garel, T. Sawicki, Silvana Mabel Gwyn, S. Golob, A. |
| author_role |
author |
| author2 |
Ryan-Weber, E.V. Cooke, J. Diaz, Carlos Gonzalo Nanayakkara, T. Yuan, T. T. Spitler, L.R. Mestric, U. Garel, T. Sawicki, Silvana Mabel Gwyn, S. Golob, A. |
| author2_role |
author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
COSMOLOGY: DARK AGES, REIONIZATION, FIRST STARS GALAXIES: INTERGALACTIC MEDIUM GALAXIES: ISM |
| topic |
COSMOLOGY: DARK AGES, REIONIZATION, FIRST STARS GALAXIES: INTERGALACTIC MEDIUM GALAXIES: ISM |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
We present the first results of our pilot study of eight photometrically selected Lyman-continuum (LyC) emitting galaxy candidates from the COSMOS field and focus on their optical emission line ratios. Observations were performed in the H and K bands using the Multi-Object Spectrometer for Infra-Red Exploration (MOSFIRE) instrument at the Keck Observatory, targeting the [O ii], H β, and [Oiii] emission lines. We find that photometrically selected LyC emitting galaxy candidates have high ionization parameters, based on their high [O iii]/[O ii] ratios (O32), with an average ratio for our sample of 2.5 ± 0.2. Preliminary results of our companion Low-Resolution Imaging Spectrometer (LRIS) observations, targeting LyC and Ly α, show that those galaxies with the largest O32 are typically found to also be Ly α emitters. High O32 galaxies are also found to have tentative non-zero LyC escape fractions (f esc (LyC)) based on u band photometric detections. These results are consistent with samples of highly ionized galaxies, including confirmed LyC emitting galaxies from the literature. We also perform a detailed comparison between the observed emission line ratios and simulated line ratios from density bounded H ii regions modelled using the photoionization code MAPPINGS V. Estimates of f esc (LyC) for our sample fall in the range from 0.0 to 0.23 and suggest possible tension with published correlations between O32 and f esc (LyC), adding weight to dichotomy of arguments in the literature. We highlight the possible effects of clumpy geometry and mergers that may account for such tension. Fil: Bassett, R.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; Australia Fil: Ryan-Weber, E.V.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; Australia Fil: Cooke, J.. Swinburne University of Technology; Australia Fil: Diaz, Carlos Gonzalo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina. Gemini Observatory; Chile Fil: Nanayakkara, T.. Leiden University; Países Bajos Fil: Yuan, T. T.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; Australia Fil: Spitler, L.R.. Australian Astronomical Observatories; Australia. Macquarie University; Australia. Macquarie University; Australia Fil: Mestric, U.. Swinburne University of Technology; Australia. Australian Research Council. Centre of Excellence for All Sky Astrophysics in 3 Dimensions; Australia Fil: Garel, T.. Centre de Recherche Astrophysique de Lyon; Francia Fil: Sawicki, Silvana Mabel. Saint Mary's University; Canadá Fil: Gwyn, S.. National Research Council Canada; Canadá Fil: Golob, A.. Saint Mary's University; Canadá |
| description |
We present the first results of our pilot study of eight photometrically selected Lyman-continuum (LyC) emitting galaxy candidates from the COSMOS field and focus on their optical emission line ratios. Observations were performed in the H and K bands using the Multi-Object Spectrometer for Infra-Red Exploration (MOSFIRE) instrument at the Keck Observatory, targeting the [O ii], H β, and [Oiii] emission lines. We find that photometrically selected LyC emitting galaxy candidates have high ionization parameters, based on their high [O iii]/[O ii] ratios (O32), with an average ratio for our sample of 2.5 ± 0.2. Preliminary results of our companion Low-Resolution Imaging Spectrometer (LRIS) observations, targeting LyC and Ly α, show that those galaxies with the largest O32 are typically found to also be Ly α emitters. High O32 galaxies are also found to have tentative non-zero LyC escape fractions (f esc (LyC)) based on u band photometric detections. These results are consistent with samples of highly ionized galaxies, including confirmed LyC emitting galaxies from the literature. We also perform a detailed comparison between the observed emission line ratios and simulated line ratios from density bounded H ii regions modelled using the photoionization code MAPPINGS V. Estimates of f esc (LyC) for our sample fall in the range from 0.0 to 0.23 and suggest possible tension with published correlations between O32 and f esc (LyC), adding weight to dichotomy of arguments in the literature. We highlight the possible effects of clumpy geometry and mergers that may account for such tension. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019-03 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/124436 Bassett, R.; Ryan-Weber, E.V.; Cooke, J.; Diaz, Carlos Gonzalo; Nanayakkara, T.; et al.; On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 483; 4; 3-2019; 5223-5245 0035-8711 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/124436 |
| identifier_str_mv |
Bassett, R.; Ryan-Weber, E.V.; Cooke, J.; Diaz, Carlos Gonzalo; Nanayakkara, T.; et al.; On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 483; 4; 3-2019; 5223-5245 0035-8711 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty3320 info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/483/4/5223/5237720 info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1812.04129 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf |
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Wiley Blackwell Publishing, Inc |
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Wiley Blackwell Publishing, Inc |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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