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...
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2023 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/218391 |
| Acesso em linha: | https://hdl.handle.net/2445/218391 |
| Access Level: | acceso abierto |
| Palavra-chave: | Galàxies actives Astrofísica Galàxies Active galaxies Astrophysics Galaxies |
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Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey?Herrero-Illana, R.Privon, G.C.Evans, A.S.Díaz-Santos, T.Pérez-Torres, M.Á.Uv, V.Alberdi, A.Iwasawa, KazushiArmus, L.Aalto, S.Mazzarella, J.Chu, J.Sanders, D.B.Barcos-Muñoz, 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.Galàxies activesAstrofísicaGalàxiesActive galaxiesAstrophysicsGalaxiesWe 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 hαi = 1.8 +1.3 −0.8 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. EDP Sciences2025202520232025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion1 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/218391Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1051/0004-6361/201834088Astronomy & Astrophysics, 2023, vol. 628, num.A71https://doi.org/10.1051/0004-6361/201834088(c) The European Southern Observatory (ESO), 2023info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2183912026-05-29T05:05:01Z |
| 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. Galàxies actives Astrofísica Galàxies Active galaxies Astrophysics Galaxies |
| 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. Díaz-Santos, T. Pérez-Torres, M.Á. Uv, V. Alberdi, A. Iwasawa, Kazushi Armus, L. Aalto, S. Mazzarella, J. Chu, J. Sanders, D.B. Barcos-Muñoz, 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. Díaz-Santos, T. Pérez-Torres, M.Á. Uv, V. Alberdi, A. Iwasawa, Kazushi Armus, L. Aalto, S. Mazzarella, J. Chu, J. Sanders, D.B. Barcos-Muñoz, 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. Díaz-Santos, T. Pérez-Torres, M.Á. Uv, V. Alberdi, A. Iwasawa, Kazushi Armus, L. Aalto, S. Mazzarella, J. Chu, J. Sanders, D.B. Barcos-Muñoz, 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 author |
| dc.subject.none.fl_str_mv |
Galàxies actives Astrofísica Galàxies Active galaxies Astrophysics Galaxies |
| topic |
Galàxies actives Astrofísica Galàxies Active galaxies Astrophysics Galaxies |
| 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 hαi = 1.8 +1.3 −0.8 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 |
2023 |
| dc.date.none.fl_str_mv |
2023 2025 2025 2025 |
| 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 |
https://hdl.handle.net/2445/218391 |
| url |
https://hdl.handle.net/2445/218391 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Reproducció del document publicat a: https://doi.org/10.1051/0004-6361/201834088 Astronomy & Astrophysics, 2023, vol. 628, num.A71 https://doi.org/10.1051/0004-6361/201834088 |
| dc.rights.none.fl_str_mv |
(c) The European Southern Observatory (ESO), 2023 info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
(c) The European Southern Observatory (ESO), 2023 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
1 p. application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
EDP Sciences |
| publisher.none.fl_str_mv |
EDP Sciences |
| dc.source.none.fl_str_mv |
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Recercat. Dipósit de la Recerca de Catalunya |
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Recercat. Dipósit de la Recerca de Catalunya |
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