The source counts of submillimetre galaxies detected at λ = 1.1 mm
The source counts of galaxies discovered at submillimetre and millimetre wavelengths provideimportant information on the evolution of infrared-bright galaxies. We combine the data fromsix blank-field surveys carried out at 1.1 mm with AzTEC, totalling 1.6 deg² in area with root-mean-square depths ra...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2012 |
| País: | México |
| Institución: | Instituto Nacional de Astrofísica, Óptica y Electrónica |
| Repositorio: | Repositorio Institucional del INAOE |
| Idioma: | inglés |
| OAI Identifier: | oai:inaoe.repositorioinstitucional.mx:1009/2040 |
| Acceso en línea: | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/2040 |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/Inspec/Galaxies: evolution info:eu-repo/classification/Inspec/Galaxies: high-redshift info:eu-repo/classification/Inspec/Galaxies: starburst info:eu-repo/classification/Inspec/Submillimetre: galaxies info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/21 info:eu-repo/classification/cti/2105 info:eu-repo/classification/cti/210502 |
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oai:inaoe.repositorioinstitucional.mx:1009/2040 |
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The source counts of submillimetre galaxies detected at λ = 1.1 mm Itziar Aretxaga David Hughes Alfredo Montaña Barbano info:eu-repo/classification/Inspec/Galaxies: evolution info:eu-repo/classification/Inspec/Galaxies: high-redshift info:eu-repo/classification/Inspec/Galaxies: starburst info:eu-repo/classification/Inspec/Submillimetre: galaxies info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/21 info:eu-repo/classification/cti/2105 info:eu-repo/classification/cti/210502 The source counts of galaxies discovered at submillimetre and millimetre wavelengths provideimportant information on the evolution of infrared-bright galaxies. We combine the data fromsix blank-field surveys carried out at 1.1 mm with AzTEC, totalling 1.6 deg² in area with root-mean-square depths ranging from 0.4 to 1.7 mJy, and derive the strongest constraints to date on the 1.1 mm source counts at flux densities S₁₁₀₀ = 1–12 mJy. Using additional data from the AzTEC Cluster Environment Survey to extend the counts to S₁₁₀₀ ~ 20 mJy, we see tentative evidence for an enhancement relative to the exponential drop in the The source counts of galaxies discovered at submillimetre and millimetre wavelengths provideimportant information on the evolution of infrared-bright galaxies. We combine the data fromsix blank-field surveys carried out at 1.1 mm with AzTEC, totalling 1.6 deg² in area with root-mean-square depths ranging from 0.4 to 1.7 mJy, and derive the strongest constraints to date on the 1.1 mm source counts at flux densities S₁₁₀₀ = 1–12 mJy. Using additional data from the AzTEC Cluster Environment Survey to extend the counts to S₁₁₀₀ ~ 20 mJy, we see tentative evidence for an enhancement relative to the exponential drop in the counts at S₁₁₀₀ ~ 13 mJy and a smooth connection to the bright source counts at >20 mJy measured by the South Pole Telescope; this excess may be due to strong-lensing effects. We compare these counts to predictions from several semi-analytical and phenomenological models and find that for most the agreement is quite good at flux densities ≳4 mJy; however, we find significant discrepancies (≳3σ) between the models and the observed 1.1-mm counts at lower flux densities, and none of them is consistent with the observed turnover in the Euclideannormalized counts at S₁₁₀₀ ≲ 2mJy. Our new results therefore may require modifications to existing evolutionary models for low-luminosity galaxies. Alternatively, the discrepancy between the measured counts at the faint end and predictions from phenomenological models could arise from limited knowledge of the spectral energy distributions of faint galaxies in the local Universe. Monthly notices of the royal astronomical society http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/2040 |
| title |
The source counts of submillimetre galaxies detected at λ = 1.1 mm |
| spellingShingle |
The source counts of submillimetre galaxies detected at λ = 1.1 mm Itziar Aretxaga info:eu-repo/classification/Inspec/Galaxies: evolution info:eu-repo/classification/Inspec/Galaxies: high-redshift info:eu-repo/classification/Inspec/Galaxies: starburst info:eu-repo/classification/Inspec/Submillimetre: galaxies info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/21 info:eu-repo/classification/cti/2105 info:eu-repo/classification/cti/210502 |
| title_short |
The source counts of submillimetre galaxies detected at λ = 1.1 mm |
| title_full |
The source counts of submillimetre galaxies detected at λ = 1.1 mm |
| title_fullStr |
The source counts of submillimetre galaxies detected at λ = 1.1 mm |
| title_full_unstemmed |
The source counts of submillimetre galaxies detected at λ = 1.1 mm |
| title_sort |
The source counts of submillimetre galaxies detected at λ = 1.1 mm |
| author |
Itziar Aretxaga |
| author_facet |
Itziar Aretxaga David Hughes Alfredo Montaña Barbano |
| author_role |
author |
| author2 |
David Hughes Alfredo Montaña Barbano |
| author2_role |
author author |
| topic |
info:eu-repo/classification/Inspec/Galaxies: evolution info:eu-repo/classification/Inspec/Galaxies: high-redshift info:eu-repo/classification/Inspec/Galaxies: starburst info:eu-repo/classification/Inspec/Submillimetre: galaxies info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/21 info:eu-repo/classification/cti/2105 info:eu-repo/classification/cti/210502 |
| topic_facet |
info:eu-repo/classification/Inspec/Galaxies: evolution info:eu-repo/classification/Inspec/Galaxies: high-redshift info:eu-repo/classification/Inspec/Galaxies: starburst info:eu-repo/classification/Inspec/Submillimetre: galaxies info:eu-repo/classification/cti/1 info:eu-repo/classification/cti/21 info:eu-repo/classification/cti/2105 info:eu-repo/classification/cti/210502 |
| description |
The source counts of galaxies discovered at submillimetre and millimetre wavelengths provideimportant information on the evolution of infrared-bright galaxies. We combine the data fromsix blank-field surveys carried out at 1.1 mm with AzTEC, totalling 1.6 deg² in area with root-mean-square depths ranging from 0.4 to 1.7 mJy, and derive the strongest constraints to date on the 1.1 mm source counts at flux densities S₁₁₀₀ = 1–12 mJy. Using additional data from the AzTEC Cluster Environment Survey to extend the counts to S₁₁₀₀ ~ 20 mJy, we see tentative evidence for an enhancement relative to the exponential drop in the The source counts of galaxies discovered at submillimetre and millimetre wavelengths provideimportant information on the evolution of infrared-bright galaxies. We combine the data fromsix blank-field surveys carried out at 1.1 mm with AzTEC, totalling 1.6 deg² in area with root-mean-square depths ranging from 0.4 to 1.7 mJy, and derive the strongest constraints to date on the 1.1 mm source counts at flux densities S₁₁₀₀ = 1–12 mJy. Using additional data from the AzTEC Cluster Environment Survey to extend the counts to S₁₁₀₀ ~ 20 mJy, we see tentative evidence for an enhancement relative to the exponential drop in the counts at S₁₁₀₀ ~ 13 mJy and a smooth connection to the bright source counts at >20 mJy measured by the South Pole Telescope; this excess may be due to strong-lensing effects. We compare these counts to predictions from several semi-analytical and phenomenological models and find that for most the agreement is quite good at flux densities ≳4 mJy; however, we find significant discrepancies (≳3σ) between the models and the observed 1.1-mm counts at lower flux densities, and none of them is consistent with the observed turnover in the Euclideannormalized counts at S₁₁₀₀ ≲ 2mJy. Our new results therefore may require modifications to existing evolutionary models for low-luminosity galaxies. Alternatively, the discrepancy between the measured counts at the faint end and predictions from phenomenological models could arise from limited knowledge of the spectral energy distributions of faint galaxies in the local Universe. |
| publishDate |
2012 |
| format |
article |
| status_str |
acceptedVersion |
| url |
http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/2040 |
| language |
eng |
| eu_rights_str_mv |
openAccess |
| publisher |
Monthly notices of the royal astronomical society |
| institution |
INAOE |
| collection |
Repositorio Institucional del INAOE |
| reponame_str |
Repositorio Institucional del INAOE |
| instname_str |
Instituto Nacional de Astrofísica, Óptica y Electrónica |
| _version_ |
1878409388190859264 |
| publishDateSort |
2012 |
| author_browse |
Alfredo Montaña Barbano David Hughes Itziar Aretxaga |
| publisherStr |
Monthly notices of the royal astronomical society |
| score |
6,9303427 |