Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey

We present IRAM-30 m Telescope 12CO and 13CO observations of a sample of 55 luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) in the local universe. This sample is a subset of the Great Observatory All-Sky LIRG Survey (GOALS), for which we use ancillary multi-wavelength data to better...

Descripción completa

Detalles Bibliográficos
Autores: Herrero-Illana, R., Privon, G.C., Evans, A.S., Diaz-Santos, T., Perez-Torres, M.A., Alberdi, A., Iwasawa, K., Armus, L., Aalto, S., Mazzarella, J., Chu, J., Sanders, D.B., Barcos-Munoz, L., Charmandaris, V., Linden, S.T., Yoon, I., Frayer, D.T., Inami, H., Kim, D.C., Borish, H.J., Conway, J., Murphy, E.J., Song, Y., Stierwalt, S., Surace, J.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:96040
Acceso en línea:http://zaguan.unizar.es/record/96040
Access Level:acceso abierto
id ES_43b8f64b9d0aeb4031925f4ee5f9ecc6
oai_identifier_str oai:zaguan.unizar.es:96040
network_acronym_str ES
network_name_str España
repository_id_str
spelling Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG SurveyHerrero-Illana, R.Privon, G.C.Evans, A.S.Diaz-Santos, T.Perez-Torres, M.A.Alberdi, A.Iwasawa, K.Armus, L.Aalto, S.Mazzarella, J.Chu, J.Sanders, D.B.Barcos-Munoz, L.Charmandaris, V.Linden, S.T.Yoon, I.Frayer, D.T.Inami, H.Kim, D.C.Borish, H.J.Conway, J.Murphy, E.J.Song, Y.Stierwalt, S.Surace, J.We present IRAM-30 m Telescope 12CO and 13CO observations of a sample of 55 luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) in the local universe. This sample is a subset of the Great Observatory All-Sky LIRG Survey (GOALS), for which we use ancillary multi-wavelength data to better understand their interstellar medium and star formation properties. Fifty-three (96%) of the galaxies are detected in 12CO, and 29 (52%) are also detected in 13CO above a 3σ level. The median full width at zero intensity (FWZI) velocity of the CO line emission is 661 km s−1, and ∼54% of the galaxies show a multi-peak CO profile. Herschel photometric data is used to construct the far-IR spectral energy distribution of each galaxy, which are fit with a modified blackbody model that allows us to derive dust temperatures and masses, and infrared luminosities. We make the assumption that the gas-to-dust mass ratio of (U)LIRGs is comparable to local spiral galaxies with a similar stellar mass (i.e., gas/dust of mergers is comparable to their progenitors) to derive a CO-to-H2 conversion factor of ⟨α⟩ = 1.8−0.8+1.3 M⊙ (K km s−1 pc2)−1; such a value is comparable to that derived for (U)LIRGs based on dynamical mass arguments. We derive gas depletion times of 400 − 600 Myr for the (U)LIRGs, compared to the 1.3 Gyr for local spiral galaxies. Finally, we re-examine the relationship between the 12CO/13CO ratio and dust temperature, confirming a transition to elevated ratios in warmer systems.2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://zaguan.unizar.es/record/96040reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/grantAgreement/ES/MINECO/AYA2012-38491-C02-02info:eu-repo/grantAgreement/ES/MINECO/AYA2015-63939-C2-1-Pinfo:eu-repo/semantics/openAccessoai:zaguan.unizar.es:960402026-05-29T13:59:51Z
dc.title.none.fl_str_mv Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey
title Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey
spellingShingle Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey
Herrero-Illana, R.
title_short Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey
title_full Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey
title_fullStr Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey
title_full_unstemmed Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey
title_sort Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey
dc.creator.none.fl_str_mv Herrero-Illana, R.
Privon, G.C.
Evans, A.S.
Diaz-Santos, T.
Perez-Torres, M.A.
Alberdi, A.
Iwasawa, K.
Armus, L.
Aalto, S.
Mazzarella, J.
Chu, J.
Sanders, D.B.
Barcos-Munoz, L.
Charmandaris, V.
Linden, S.T.
Yoon, I.
Frayer, D.T.
Inami, H.
Kim, D.C.
Borish, H.J.
Conway, J.
Murphy, E.J.
Song, Y.
Stierwalt, S.
Surace, J.
author Herrero-Illana, R.
author_facet Herrero-Illana, R.
Privon, G.C.
Evans, A.S.
Diaz-Santos, T.
Perez-Torres, M.A.
Alberdi, A.
Iwasawa, K.
Armus, L.
Aalto, S.
Mazzarella, J.
Chu, J.
Sanders, D.B.
Barcos-Munoz, L.
Charmandaris, V.
Linden, S.T.
Yoon, I.
Frayer, D.T.
Inami, H.
Kim, D.C.
Borish, H.J.
Conway, J.
Murphy, E.J.
Song, Y.
Stierwalt, S.
Surace, J.
author_role author
author2 Privon, G.C.
Evans, A.S.
Diaz-Santos, T.
Perez-Torres, M.A.
Alberdi, A.
Iwasawa, K.
Armus, L.
Aalto, S.
Mazzarella, J.
Chu, J.
Sanders, D.B.
Barcos-Munoz, L.
Charmandaris, V.
Linden, S.T.
Yoon, I.
Frayer, D.T.
Inami, H.
Kim, D.C.
Borish, H.J.
Conway, J.
Murphy, E.J.
Song, Y.
Stierwalt, S.
Surace, J.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
description We present IRAM-30 m Telescope 12CO and 13CO observations of a sample of 55 luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) in the local universe. This sample is a subset of the Great Observatory All-Sky LIRG Survey (GOALS), for which we use ancillary multi-wavelength data to better understand their interstellar medium and star formation properties. Fifty-three (96%) of the galaxies are detected in 12CO, and 29 (52%) are also detected in 13CO above a 3σ level. The median full width at zero intensity (FWZI) velocity of the CO line emission is 661 km s−1, and ∼54% of the galaxies show a multi-peak CO profile. Herschel photometric data is used to construct the far-IR spectral energy distribution of each galaxy, which are fit with a modified blackbody model that allows us to derive dust temperatures and masses, and infrared luminosities. We make the assumption that the gas-to-dust mass ratio of (U)LIRGs is comparable to local spiral galaxies with a similar stellar mass (i.e., gas/dust of mergers is comparable to their progenitors) to derive a CO-to-H2 conversion factor of ⟨α⟩ = 1.8−0.8+1.3 M⊙ (K km s−1 pc2)−1; such a value is comparable to that derived for (U)LIRGs based on dynamical mass arguments. We derive gas depletion times of 400 − 600 Myr for the (U)LIRGs, compared to the 1.3 Gyr for local spiral galaxies. Finally, we re-examine the relationship between the 12CO/13CO ratio and dust temperature, confirming a transition to elevated ratios in warmer systems.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://zaguan.unizar.es/record/96040
url http://zaguan.unizar.es/record/96040
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/ES/MINECO/AYA2012-38491-C02-02
info:eu-repo/grantAgreement/ES/MINECO/AYA2015-63939-C2-1-P
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv
publisher.none.fl_str_mv
dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869407043985604608
score 15,300724

Similares en LA Referencia