On the lack of correlation between [O III ]/[O II ] and Lyman continuum escape fraction

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...

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Detalhes bibliográficos
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.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/124436
Acesso em linha:http://hdl.handle.net/11336/124436
Access Level:acceso abierto
Palavra-chave:COSMOLOGY: DARK AGES, REIONIZATION, FIRST STARS
GALAXIES: INTERGALACTIC MEDIUM
GALAXIES: ISM
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
id AR_fb4d7a01db80a0805716672ccfd6fbb0
oai_identifier_str oai:ri.conicet.gov.ar:11336/124436
network_acronym_str AR
network_name_str Argentina
repository_id_str
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
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
topic COSMOLOGY: DARK AGES, REIONIZATION, FIRST STARS
GALAXIES: INTERGALACTIC MEDIUM
GALAXIES: ISM
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1799195866281541632
spelling 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 Técnicas2024-05-08T14:06:27Zoai: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:34982024-05-08 14:06:27.867CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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